Gamma-ray Burst 221110A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:28:35 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1136936,   Seg_Num: 0
GRB_RA:           29.119d {+01h 56m 29s} (J2000),
                  29.380d {+01h 57m 31s} (current),
                  28.549d {+01h 54m 12s} (1950)
GRB_DEC:         -27.314d {-27d 18' 50"} (J2000),
                 -27.203d {-27d 12' 10"} (current),
                 -27.558d {-27d 33' 28"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       2072 [cnts]    Image_Peak=138 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   146     E_range: 25-100 keV
BKG_INTEN:       11862 [cnts]
BKG_TIME:        8881.81 SOD {02:28:01.81} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19893 TJD;   314 DOY;   22/11/10
GRB_TIME:        8897.55 SOD {02:28:17.55} UT
GRB_PHI:         -68.63 [deg]
GRB_THETA:        17.70 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.37 [sigma]
IMAGE_SIGNIF:    8.01 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  -2  +0  +0 +68  +0 
SUN_POSTN:       225.21d {+15h 00m 49s}  -17.10d {-17d 05' 55"}
SUN_DIST:        133.11 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.38d {+04h 17m 30s}  +23.56d {+23d 33' 37"}
MOON_DIST:        60.98 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.40,-75.55 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       15.43,-36.37 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 347.34,18.96 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:30:07 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     1136936,   Seg_Num: 0
GRB_RA:           29.1014d {+01h 56m 24.3s} (J2000),
                  29.3623d {+01h 57m 26.9s} (current),
                  28.5305d {+01h 54m 07.3s} (1950)
GRB_DEC:         -27.2927d {-27d 17' 33.7"} (J2000),
                 -27.1817d {-27d 10' 53.9"} (current),
                 -27.5366d {-27d 32' 11.8"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       32 [cnts]
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  8972.86 SOD {02:29:32.86} UT,   75.3 [sec] since BAT Trigger Time
CENTROID_X:      338.30,  raw= 338  [pixels]
CENTROID_Y:      277.70,  raw= 278  [pixels]
ROLL:            201.25 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -48.08
GRB_POS_XRT_Z:   72.86
IMAGE_URL:       sw01136936000msxps_rw.img
SUN_POSTN:       225.21d {+15h 00m 50s}  -17.10d {-17d 05' 56"}
SUN_DIST:        133.13 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.39d {+04h 17m 34s}  +23.56d {+23d 33' 49"}
MOON_DIST:        60.98 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.31,-75.56 [deg] galactic lon,lat of the burst
ECL_COORDS:       15.42,-36.34 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:30:09 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     1136936,   Seg_Num: 0
GRB_RA:           29.1014d {+01h 56m 24.3s} (J2000),
                  29.3623d {+01h 57m 26.9s} (current),
                  28.5305d {+01h 54m 07.3s} (1950)
GRB_DEC:         -27.2927d {-27d 17' 33.7"} (J2000),
                 -27.1817d {-27d 10' 53.9"} (current),
                 -27.5366d {-27d 32' 11.8"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       32 [cnts]
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  8972.86 SOD {02:29:32.86} UT,   75.3 [sec] since BAT Trigger Time
CENTROID_X:      338.30,  raw= 338  [pixels]
CENTROID_Y:      277.70,  raw= 278  [pixels]
ROLL:            201.25 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -48.08
GRB_POS_XRT_Z:   72.86
IMAGE_URL:       sw01136936000msxps_rw.img
SUN_POSTN:       225.21d {+15h 00m 50s}  -17.10d {-17d 05' 56"}
SUN_DIST:        133.13 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.39d {+04h 17m 34s}  +23.56d {+23d 33' 49"}
MOON_DIST:        60.98 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.31,-75.56 [deg] galactic lon,lat of the burst
ECL_COORDS:       15.42,-36.34 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:29:57 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     1136936,   Seg_Num: 0
GRB_RA:           29.1014d {+01h 56m 24.33s} (J2000),
                  29.3623d {+01h 57m 26.94s} (current),
                  28.5305d {+01h 54m 07.31s} (1950)
GRB_DEC:         -27.2927d {-27d 17' 33.7"} (J2000),
                 -27.1817d {-27d 10' 53.9"} (current),
                 -27.5366d {-27d 32' 11.8"} (1950)
GRB_ERROR:       5.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       7.91e-10 [erg/cm2/sec]
GRB_SIGNIF:      5.65 [sigma]
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  8972.86 SOD {02:29:32.86} UT,   75.3 [sec] since BAT Trigger Time
TAM[0-3]:        327.64 237.19 261.67 243.76
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       225.21d {+15h 00m 49s}  -17.10d {-17d 05' 56"}
SUN_DIST:        133.13 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.39d {+04h 17m 33s}  +23.56d {+23d 33' 47"}
MOON_DIST:        60.98 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.31,-75.56 [deg] galactic lon,lat of the burst
ECL_COORDS:       15.42,-36.34 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 1.61 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:31:44 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1136936,   Seg_Num: 0
GRB_RA:           29.119d {+01h 56m 29s} (J2000),
                  29.380d {+01h 57m 31s} (current),
                  28.549d {+01h 54m 12s} (1950)
GRB_DEC:         -27.314d {-27d 18' 50"} (J2000),
                 -27.203d {-27d 12' 10"} (current),
                 -27.558d {-27d 33' 28"} (1950)
GRB_DATE:        19893 TJD;   314 DOY;   22/11/10
GRB_TIME:        8897.55 SOD {02:28:17.55} UT
TRIGGER_INDEX:   146
GRB_PHI:         -68.63 [deg]
GRB_THETA:        17.70 [deg]
DELTA_TIME:      26.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.37 [sigma]
IMAGE_SIGNIF:    8.01 [sigma]
LC_URL:          sw01136936000msb.lc
SUN_POSTN:       225.21d {+15h 00m 50s}  -17.10d {-17d 05' 57"}
SUN_DIST:        133.11 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.41d {+04h 17m 37s}  +23.57d {+23d 34' 01"}
MOON_DIST:        61.00 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.40,-75.55 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       15.43,-36.37 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Lightcurve.  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 347.34,18.96 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:32:28 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     1136936,   Seg_Num: 0
POINT_RA:         29.107d {+01h 56m 26s} (J2000)
POINT_DEC:       -27.317d {-27d 19' 00"} (J2000)
POINT_ROLL:      201.249d
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  8980.24 SOD {02:29:40.24} UT,   82.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.592
N_STARS:         11
X_OFFSET:        408 [pixels]
Y_OFFSET:        520 [pixels]
X_MAX:           1367 [pixels]
Y_MAX:           1479 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw01136936000msufc0082.fits
SUN_POSTN:       225.21d {+15h 00m 50s}  -17.10d {-17d 05' 58"}
SUN_DIST:        133.11 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.41d {+04h 17m 39s}  +23.57d {+23d 34' 07"}
MOON_DIST:        61.01 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.41,-75.56 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       15.41,-36.37 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:32:45 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     1136936,   Seg_Num: 0
POINT_RA:         29.107d {+01h 56m 26s} (J2000)
POINT_DEC:       -27.317d {-27d 19' 00"} (J2000)
POINT_ROLL:      201.249d
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  8980.24 SOD {02:29:40.24} UT,   82.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.592
N_STARS:         11
X_OFFSET:        408 [pixels]
Y_OFFSET:        520 [pixels]
X_MAX:           1367 [pixels]
Y_MAX:           1479 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw01136936000msufc0082.fits
SUN_POSTN:       225.21d {+15h 00m 50s}  -17.10d {-17d 05' 58"}
SUN_DIST:        133.11 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.41d {+04h 17m 40s}  +23.57d {+23d 34' 09"}
MOON_DIST:        61.02 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.41,-75.56 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       15.41,-36.37 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_srclist.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:33:43 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     1136936,   Seg_Num: 0
POINT_RA:         29.107d {+01h 56m 26s} (J2000)
POINT_DEC:       -27.317d {-27d 19' 00"} (J2000)
ROLL:            201.249d
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  8980.24 SOD {02:29:40.24} UT,   82.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     689740210
X_OFFSET:        722 [pixels]
Y_OFFSET:        1030 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       882
Y_GRB_POS:       1190
BINNING_INDEX:   1
IM_URL:          sw01136936000msuni0113.fits
SUN_POSTN:       225.21d {+15h 00m 50s}  -17.10d {-17d 05' 59"}
SUN_DIST:        133.11 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.42d {+04h 17m 42s}  +23.57d {+23d 34' 17"}
MOON_DIST:        61.02 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.41,-75.56 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       15.41,-36.37 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:33:51 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     1136936,   Seg_Num: 0
POINT_RA:         29.107d {+01h 56m 26s} (J2000)
POINT_DEC:       -27.317d {-27d 19' 00"} (J2000)
ROLL:            201.249d
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  8980.24 SOD {02:29:40.24} UT,   82.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     689740210
X_OFFSET:        722 [pixels]
Y_OFFSET:        1030 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       882
Y_GRB_POS:       1190
BINNING_INDEX:   1
IM_URL:          sw01136936000msuni0113.fits
SUN_POSTN:       225.21d {+15h 00m 50s}  -17.10d {-17d 05' 59"}
SUN_DIST:        133.11 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.42d {+04h 17m 42s}  +23.57d {+23d 34' 18"}
MOON_DIST:        61.02 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.41,-75.56 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       15.41,-36.37 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:38:58 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     1136936,   Seg_Num: 0
POINT_RA:         29.108d {+01h 56m 26s} (J2000)
POINT_DEC:       -27.316d {-27d 18' 55"} (J2000)
POINT_ROLL:      201.248d
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  9192.25 SOD {02:33:12.25} UT,   294.7 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.207
N_STARS:         6
X_OFFSET:        402 [pixels]
Y_OFFSET:        710 [pixels]
X_MAX:           1361 [pixels]
Y_MAX:           1669 [pixels]
DET_THRESH:      5
PHOTO_THRESH:    2
SL_URL:          sw01136936000msufc0294.fits
SUN_POSTN:       225.21d {+15h 00m 51s}  -17.10d {-17d 06' 02"}
SUN_DIST:        133.10 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.47d {+04h 17m 53s}  +23.58d {+23d 34' 58"}
MOON_DIST:        61.06 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.41,-75.56 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       15.41,-36.37 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:39:11 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     1136936,   Seg_Num: 0
POINT_RA:         29.108d {+01h 56m 26s} (J2000)
POINT_DEC:       -27.316d {-27d 18' 55"} (J2000)
POINT_ROLL:      201.248d
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  9192.25 SOD {02:33:12.25} UT,   294.7 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.207
N_STARS:         6
X_OFFSET:        402 [pixels]
Y_OFFSET:        710 [pixels]
X_MAX:           1361 [pixels]
Y_MAX:           1669 [pixels]
DET_THRESH:      5
PHOTO_THRESH:    2
SL_URL:          sw01136936000msufc0294.fits
SUN_POSTN:       225.21d {+15h 00m 51s}  -17.10d {-17d 06' 02"}
SUN_DIST:        133.10 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.47d {+04h 17m 54s}  +23.58d {+23d 35' 00"}
MOON_DIST:        61.06 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.41,-75.56 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       15.41,-36.37 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_srclist.fits.gz file does not exist; skipping the attachment.

GCN Circular #32923
V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko, G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin (Lomonosov Moscow State University, SAI, Physics Department),
R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA),
R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias),
D. Buckley (South African Astronomical Observatory),
O.A. Gres, N.M. Budnev (Irkutsk State University, API),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
A. Gabovich, V.Yurkov (Blagoveschensk Educational State University)
MASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) was pointed to the Swift GRB221110.10 (trigger No 1136936,01h 56m 28.56s , -27d 18m 50.4s, R=0.05) errorbox 47 sec after notice time and 68 sec after trigger time at 2022-11-10 02:29:26 UT, with upper limit up to 17.0 mag. The observations began at zenith distance = 11 deg. The sun altitude is -35.3 deg.
The galactic latitude b = -75 deg., longitude l = 217 deg.
Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2151411
We obtain a following upper limits.
```
Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      73 |         MASTER-OAFA |   C |    10 | 17.0 |        
     121 |         MASTER-OAFA |   C |    20 | 17.0 |        
```
Filter C is a clear (unfiltred) band.
The observation and reduction will continue. The message may be cited.
GCN Circular #32924
V. Lipunov, E. Gorbovskoy, K.Zhirkov, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko, G.Antipov, D.Zimnukhov, V.Senik, T.Pogrosheva, E.Minkina, A.Chasovnikov, V.Topolev, V.Grinshpun, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department),
R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias),
D. Buckley (South African Astronomical Observatory),
R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA),
O.A. Gres, N.M. Budnev (Irkutsk State University, API),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
V. Yurkov, A. Gabovich (Blagoveschensk Educational State University)
MASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) was pointed to the GRB221110.10 49 sec after notice time and 68 sec after trigger time at 2022-11-10 02:29:26 UT. On our first (10s exposure) set we found 1 optical transient within Swift error-box (ra=29.1125 dec=-27.3139 r=0.05) brighter than 16.5.
```
 T-Tmid      Date      Time       Expt.        Ra                Dec           Mag
---------|---------------------|-------|-----------------|-----------------|-------
      73   2022-11-10 02:29:26      10   (01h 56m 23.64s , -27d 17m 44.8s)     15.5
```
The 5-sigma upper limit has been about 16.5mag The message may be cited.
GCN Circular #32925
M. A. Williams (PSU), S. Dichiara (PSU), J. A. Kennea (PSU), S. Laha (GSFC/UMBC), D. M. Palmer (LANL) and A. Tohuvavohu (U Toronto) report on behalf of the Neil Gehrels Swift Observatory Team:
At 02:28:17 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 221110A (trigger=1136936). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 29.119, -27.314 which is
```
   RA(J2000) = 01h 56m 29s
   Dec(J2000) = -27d 18' 50"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single-peaked structure with a duration of about 10 sec. The peak count rate was ~1400 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began observing the field at 02:29:32.8 UT, 75.3 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source located at RA, Dec 29.09928, -27.29435 which is equivalent to:
```
   RA(J2000)  = 01h 56m 23.83s
   Dec(J2000) = -27d 17' 39.7"
```
with an uncertainty of 3.5 arcseconds (radius, 90% containment). This location is 94 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at https://www.swift.ac.uk/sper.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (1.46 x 10^20 cm^-2, Willingale et al. 2013), with an excess column of 4.2 (+3.14/-2.70) x 10^21 cm^-2 (90% confidence).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 80 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at
```
  RA(J2000)  =	01:56:23.90 =  29.09958
  DEC(J2000) = -27:17:36.9  = -27.29355
```
with a 90%-confidence error radius of about 0.5 arc sec. This position is 3.0 arc sec. from the center of the XRT error circle. The estimated magnitude is 18.62 with a 1-sigma error of about 0.07.
Burst Advocate for this burst is M. A. Williams (mjw6837 AT psu.edu). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/)

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:39:44 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     1136936,   Seg_Num: 0
POINT_RA:         29.108d {+01h 56m 26s} (J2000)
POINT_DEC:       -27.316d {-27d 18' 55"} (J2000)
ROLL:            201.248d
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  9192.25 SOD {02:33:12.25} UT,   294.7 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     689740422
X_OFFSET:        722 [pixels]
Y_OFFSET:        1030 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       882
Y_GRB_POS:       1190
BINNING_INDEX:   1
IM_URL:          sw01136936000msuni0325.fits
SUN_POSTN:       225.21d {+15h 00m 51s}  -17.10d {-17d 06' 03"}
SUN_DIST:        133.10 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.48d {+04h 17m 55s}  +23.58d {+23d 35' 04"}
MOON_DIST:        61.06 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.41,-75.56 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       15.41,-36.37 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:40:16 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     1136936,   Seg_Num: 0
GRB_RA:           29.0988d {+01h 56m 23.71s} (J2000),
                  29.3597d {+01h 57m 26.32s} (current),
                  28.5279d {+01h 54m 06.69s} (1950)
GRB_DEC:         -27.2956d {-27d 17' 44.1"} (J2000),
                 -27.1846d {-27d 11' 04.3"} (current),
                 -27.5395d {-27d 32' 22.3"} (1950)
GRB_ERROR:       1.9 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  9036.00 SOD {02:30:36.00} UT,   138.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       225.21d {+15h 00m 51s}  -17.10d {-17d 06' 03"}
SUN_DIST:        133.12 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.48d {+04h 17m 56s}  +23.59d {+23d 35' 09"}
MOON_DIST:        61.05 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.32,-75.57 [deg] galactic lon,lat of the burst
ECL_COORDS:       15.41,-36.35 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.11% < P(seren) < 0.58%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Nov 22 02:39:37 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     1136936,   Seg_Num: 0
POINT_RA:         29.108d {+01h 56m 26s} (J2000)
POINT_DEC:       -27.316d {-27d 18' 55"} (J2000)
ROLL:            201.248d
IMG_START_DATE:  19893 TJD;   314 DOY;   22/11/10
IMG_START_TIME:  9192.25 SOD {02:33:12.25} UT,   294.7 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     689740422
X_OFFSET:        722 [pixels]
Y_OFFSET:        1030 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       882
Y_GRB_POS:       1190
BINNING_INDEX:   1
IM_URL:          sw01136936000msuni0325.fits
SUN_POSTN:       225.21d {+15h 00m 51s}  -17.10d {-17d 06' 03"}
SUN_DIST:        133.10 [deg]   Sun_angle= -10.9 [hr] (East of Sun)
MOON_POSTN:       64.48d {+04h 17m 55s}  +23.58d {+23d 35' 03"}
MOON_DIST:        61.06 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      217.41,-75.56 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       15.41,-36.37 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN Circular #32926
R. Strausbaugh (University of Minnesota), A. Cucchiara (NASA) report on behalf of a larger collaboration:
We observed the GRB 221110A (Williams et al., GCN 32925) field with the LCOGT 1-meter Sinistro instrument at the Cerro Tololo Interamerican Observatory, Chile site, on November 10, from 03:12 to 03:40 (corresponding to 0.73 to 1.20 hours from the GRB trigger time) with the SDSS r and i filters.
We performed a series of 3x300s exposures in each band. We detect an uncataloged source in the Swift error region, in both bands, consistent with the optical counterpart candidate (Lipunov et al., GCN 32924).
The following magnitudes are calculated using the Pan-STARRS catalog as reference:
```
r = 19.45 +/- 0.06
i = 18.19 +/- 0.08
```
These magnitudes are not corrected for galactic extinction. Imaging and spectroscopic follow-up has been conducted with Gemini and analysis is ongoing.
GCN Circular #32927
*Margarita Pereyra (UNAM), Alan M. Watson (UNAM), Nat Butler (ASU), Rosa Becerra (UNAM), Simone Dichiara (PSU), Tzveti Dimitrova (ASU), Oc�lotl L�pez (UNAM), Diego Gonz�lez (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Eleonora Troja (UTV/ASU) and report:We observed the field of the GRB 221110A (Williams et al., GCN Circ. 32925) with the COATLI 50-cm telescope and HUITZI f/8 imager at the Observatorio Astron�mico Nacional on the Sierra de San Pedro M�rtir (http://coatli.astroscu.unam.mx ) from 2022-11-10 03:26 UTC to 03:59 UTC (0.96hrs to 1.5 hours after the trigger), obtaining a total of 29 minutes of exposure in the r filter.At the position of the UVOT afterglow (Williams et al., GCN Circ. 32925), we detect a source with the following magnitude and 1-sigma uncertainty:r = 19.7 +/- 0.15Our photometry is calibrated against the Pan-STARRS1 catalog, is on an approximate AB system, and is not corrected for Galactic extinction in the direction of the GRB.Observations and reductions will continue. Further observations are planned.We thank the COATLI/HUITZI technical team and the staff of the Observatorio Astron�mico Nacional.*
-- *Dr. Margarita Pereyra *
*FFTF, Schlumberger Foundation Alumnae* ----------------------------------------------------------------------------------------------------------------
*Catedr�tica Conacyt*
*Instituto de Astronom�a de la UNAM,*
*Km. 107 Carretera Tijua**na-Ensenada, *
*Ensenada Baja California, M�xico. C.P. 22860*
Oficina: 405
Skype: margarita-pereyra
GCN Circular #32928
L. Izzo (DARK/NBI), D. B. Malesani (Radboud Univ. and DAWN/NBI), S. Vejlgaard Nielsen (DAWN/NBI), N. R. Tanvir (Univ. Leicester), J. P. U. Fynbo (DAWN/NBI), D. Xu (NAOC) report on behalf of the Stargate collabaration:
We observed the optical afterglow of GRB 221110A (Williams et al., GCN 32925; Lipunov et al., GCN 32924; Strausbaugh & Cucchiara, GCN 32926; Pereyra et al., GCN 32927) using the ESO VLT UT3 (Melipal) equipped with the X-shooter spectrograph. Our spectra cover the wavelength range 3000-25000 AA, and consist of 2 exposures by 600 s each. The observation mid time was 2022 Nov 10.158 UT (1.33 hr after the GRB).
We clearly detect continuum over the wavelength range 6200-25000 AA. A sharp break is visible around 6200 AA, which we identify as due to H I. From detection of multiple absorption features, which we interpret as due to Si IV, C IV, Fe II, O I, Si II, Al II, Al III, and many others, we infer a redshift of z = 4.06. An intervening system is also detected from Fe II and Mg II at z = 2.724.
We acknowledge excellent support from the ESO observing staff in Paranal, in particular Michael Marsset and Florian Rodler.
GCN Circular #32929
P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team.
Using 1662 s of XRT Photon Counting mode data and 4 UVOT images for GRB 221110A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 29.09871, -27.29519 which is equivalent to:
```
RA (J2000): 01h 56m 23.69s
Dec (J2000): -27d 17' 42.7"
```
with an uncertainty of 2.2 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #32930
J. D. Gropp (PSU), S. Dichiara (PSU), J.A. Kennea (PSU), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), A.P. Beardmore (U. Leicester), B. Sbarufatti (INAF-OAB), A. D'Ai (INAF-IASFPA), A. Melandri (INAF-OAB) and M.A. Williams report on behalf of the Swift-XRT team:
We have analysed 6.4 ks of XRT data for GRB 221110A (Williams et al. GCN Circ. 32925), from 64 s to 40.0 ks after the BAT trigger. The data comprise 55 s in Windowed Timing (WT) mode (the first 9 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Evans et al. (GCN Circ. 32929).
The light curve can be modelled with a power-law decay with a decay index of alpha=0.971 (+0.028, -0.027).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.88 (+/-0.15). The best-fitting absorption column is 8 (+14, -8) x 10^21 cm^-2, at a redshift of 4.06, in addition to the Galactic value of 1.5 x 10^20 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.4 x 10^-11 (3.6 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Galactic foreground: 1.5 x 10^20 cm^-2
Intrinsic column:    8 (+14, -8) x 10^21 cm^-2 at z=4.06
Photon index:	     1.88 (+/-0.15)
```
If the light curve continues to decay with a power-law decay index of 0.971, the count rate at T+24 hours will be 9.2 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 3.1 x 10^-13 (3.3 x 10^-13) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/01136936.
This circular is an official product of the Swift-XRT team.
GCN Circular #32931
T. Parsotan (GSFC/UMBC), S. D. Barthelmy (GSFC), H. A. Krimm (NSF), S. Laha (GSFC/UMBC), A. Y. Lien (U Tampa), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), M. A. Williams (PSU) (i.e. the Swift-BAT team):
Using the data set from T-240 to T+600 sec from the recent telemetry downlink, we report further analysis of BAT GRB 221110A (trigger #1136936) (Williams et al., GCN Circ. 32925). The BAT ground-calculated position is RA, Dec = 29.106, -27.298 deg which is
```
   RA(J2000)  =  01h 56m 25.5s
   Dec(J2000) = -27d 17' 51.4"
```
with an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 75%.
The mask-weighted light curve shows a single-pulse structure that starts at ~T0, peaks at ~T+1 s, and ends at ~T+10 s. T90 (15-350 keV) is 8.98 +- 2.11 sec (estimated error including systematics).
The time-averaged spectrum from T-0.41 to T+9.74 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.41 +- 0.16. The fluence in the 15-150 keV band is 5.1 +- 0.5 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+0.52 sec in the 15-150 keV band is 1.1 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/1136936/BA/
GCN Circular #32932
GRB 221110A: Swift/UVOT Detection and Corrected UVOT Position
S. J. LaPorte (PSU) and M. Williams (PSU) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 221110A 83 s after the BAT trigger (Williams et al., GCN Circ. 32925). A fading source is detected at RA (J2000) = 01:56:23.72 = 29.09882 Dec (J2000): = -27:17:45.09 = -27.29586 which is consistent with the XRT position (Evans et al. GCN Circ. 32929).
The UVOT position reported in the initial detection circular (Williams et al., GCN Circ. 32925) was incorrect, and differs from the updated position presented here by 8.45 arcsec. We apologize for any inconvenience this discrepancy may cause.
Preliminary detections and 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are: <> Filter T_start(s) T_stop(s) Exp(s) Mag b 3773 3973 196 >19.91 m2 4593 4793 196 >19.35 u 326 439 110 >19.33 v 4357 4557 197 >19.5 w1 4798 4998 196 >19.48 w2 4184 4383 196 >19.55 white_FC 114 264 147 18.68+-0.08 white 3978 4178 196 >20.66 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.013 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #32933
J. Mao, J.-J. Zhang, and J.-M. Bai (YNAO) report:We observed the field of GRB 221110A (Williams et al. GCN 32925) by the GMG telescope in Yunnan observatories.The observation began from UT 17:06:28 Nov 10, 2022, about 15 hours from the trigger. We could not observe the opticalafterglow down to a magnitude limit of r~20.8.
GCN Circular #32935
Alan M. Watson (UNAM), Nat Butler (ASU), Rosa Becerra (UNAM), Simone Dichiara (PSU), Tzveti Dimitrova (ASU), Oc�lotl L�pez (UNAM), Diego Gonz�lez (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Margarita Pereyra (UNAM), and Eleonora Troja (UTV/ASU) report:
We observed the field of the GRB 221110A (Williams et al., GCN Circ. 32925) with the COATLI 50-cm telescope and HUITZI f/8 imager at the Observatorio Astron�mico Nacional on the Sierra de San Pedro M�rtir ( http://coatli.astroscu.unam.mx) from 2022-11-11 03:28 UTC to 09:01 UTC (25.0 to 30.6 hours after the trigger), obtaining a total of 270 minutes of exposure in the r filter.
The source detected in our earlier observations (Pereyra et al., GCN Circ. 32927 has now faded and is not detected to a 3-sigma limit of
r > 22.6
Our photometry is calibrated against the Pan-STARRS1 catalog, is on an approximate AB system, and is not corrected for Galactic extinction in the direction of the GRB.
We thank the COATLI/HUITZI technical team and the staff of the Observatorio Astron�mico Nacional.
GCN Circular #32939
Content: M. Coughlin (UMN), E. Gurbanov (ShAO), F. Navarete (SOAR/NOIRLab), N. Kochiashvili (AbAO), M. Masek (FZU), Y. Rajabov (UBAI), T. Sadibekova (AIM-CEA), M. Freeberg (KNC), A. Klotz (OMP/IRAP), M. Boer, A. de Ugarte Postigo, S. Antier (OCA/Artemis), D. Turpin (CEA), R.W. Kiendrebeogo (OCA/Artemis, LPCE/UJKZ), I. Tosta e Melo (INFN-LNS), M. Lamoureux, K. Kruiswijk (UCLouvain), J.-G. Ducoin (IAP), C. Rinner, Z. Benkhaldoun (OUCA), J. Ali, A. Kaouech (OUCA/KNC), A. M. Fouad, A. Takey, A. Hamed, M. Abdel-Sabour, A. Shokry, M. Soliman (NRIAG), X. F. Wang (THU/BJP), J. Zhu (BJP), X. Y. Zeng (CGTU), L. T. Wang, A. Iskandar (XAO), K. Smith (UVI), P. Gokuldass (Florida Tech) N. Orange (OrangeWave Innovative Science, LLC), T. Hussenot (IJCLab), A. M. Fouad (NRIAG), A. Takey(NRIAG), H. A. Ismail, M. Abdel-Sabour (NRIAG), D. A. Kann (Goethe Univ.) report on behalf of the GRANDMA collaboration:
The GRANDMA telescope network responded to the Swift-BAT alert of GRB 221110A (M. A. Williams et al., GCN 32925, P.A. Evans et al. GCN 32929) detected at 02:28:17.62 UT. An afterglow was immediately detected by UVOT with the estimated magnitude of 18.62 with a 1-sigma error of ~0.07 at XRT (not refined) position RA, Dec: 29.09928, -27.29435. The VLT/X-shooter spectroscopic observations (L. Izzo et al., GCN 32928) reported a high-z candidate at z=4.06.
The first GRANDMA observations started 40 s after the BAT trigger time with TCH telescope at La Silla, Chile.
Below, we report selected observations. We also report our 5-sigma upper limits. Magnitudes are given in the AB system.
```
T-T0(hr)|    MJD     | Obser.  | Exposure | Filter | Mag +/- err|Upp.Lim
_______________________________________________________________________________
  0.06   |59893.105660| TCH     | 5x30s    |  clear | 15.9+/-0.1 | 17.2
  3.3    |59893.242788| SOAR    | 1x300s   |  sdssr | 21.7+/-0.2 | -
  3.3    |59893.246601| SOAR    | 1x300s   |  sdssi | 19.8+/-0.1 | -
  3.3    |59893.238496| SOAR    | 1x300s   |  sdssz | 19.4+/-0.2 | -
  8.1    |59893.440510| KNC-SSO | 5x300s   |   Ic   |       -    | 19.0
  17.6   |59893.835694| KAO     | 10x250s  | sdssz  |       -    | 19.9
  18.7   |59893.881065| KNC-HAO | 20x180s  |    R   |       -    | 19.8
  19.3   |59893.905405| MOSS    | 60x60s   |  clear |       -    | 20.4
  25.1   |59894.149306| VIRT    | 400x10s  |    R   |       -    | 20.1
```
These observations are consistent with previous reports by LCOGT (R. Strausbaugh et al GCN 32926) and COATLI (M. Pereyra et al. GCN 32927).
TCH and MOSS data have been calibrated using nearby stars from the Pan-STARRS catalogue in sdss-r measured with STDpipe (Karpov 2022).
KNC-HAO data have been calibrated with respect to field stars from the Pan-STARRS and APASS catalogues, using the MUPHOTEN pipeline (Duverne et al. 2022).
The upper limit derived for KAO data was defined with the faintest detected star in the field and the images were processed with IRAF.
SOAR used the "Goodman Spectroscopic Pipeline" for imaging processing and IRAF for getting the astrometric solution. The photometric calibration was done by comparison with SkyMapper sources in the field in SDSS.
The images of iTelescope 32 (Siding Spring Observatory, Australia) have been processed using the STDpipe and photometry was performed using field stars from the PanSTARRS1-i catalogue as a reference.
VIRT data was processed with the in-house pipeline which uses the USNO.B1 catalogue.
The nearly full Moon contaminated the observations.
GRANDMA is a worldwide telescope network (grandma.ijclab.in2p3.fr) devoted to the observation of transients in the context of multi-messenger astrophysics (Antier et al. 2020 MNRAS 497, 5518). Kilonova-Catcher (KNC) is the citizen science program of GRANDMA (http://kilonovacatcher.in2p3.fr/).

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