Gamma-ray Burst 200111A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 11 Jan 20 15:11:49 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      57
TRIGGER_NUM:     600448273
GRB_RA:          105.430d {+07h 01m 43s} (J2000),
                 105.736d {+07h 02m 57s} (current),
                 104.666d {+06h 58m 40s} (1950)
GRB_DEC:         +24.630d {+24d 37' 48"} (J2000),
                 +24.600d {+24d 36' 00"} (current),
                 +24.702d {+24d 42' 08"} (1950)
GRB_ERROR:       7.40 [deg radius, statistical only]
DATA_SIGNIF:     12.20 [sigma]
DATA_INTERVAL:   1.024 [sec]
GRB_DATE:        18859 TJD;    11 DOY;   20/01/11
GRB_TIME:        54668.11 SOD {15:11:08.11} UT
GRB_PHI:         187.00 [deg]
GRB_THETA:        79.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4173 (Gnd S/W Version number)
SUN_POSTN:       292.54d {+19h 30m 11s}  -21.82d {-21d 49' 08"}
SUN_DIST:        173.15 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:      124.39d {+08h 17m 33s}  +21.74d {+21d 44' 23"}
MOON_DIST:        17.37 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:      191.73, 13.08 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      104.00,  1.94 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200111633/quicklook/glg_lc_medres34_bn200111633.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_600448273.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 11 Jan 20 15:11:41 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      58
TRIGGER_NUM:     600448273
GRB_RA:          113.083d {+07h 32m 20s} (J2000),
                 113.388d {+07h 33m 33s} (current),
                 112.321d {+07h 29m 17s} (1950)
GRB_DEC:         +25.300d {+25d 18' 00"} (J2000),
                 +25.256d {+25d 15' 22"} (current),
                 +25.407d {+25d 24' 27"} (1950)
GRB_ERROR:       5.42 [deg radius, statistical plus systematic]
GRB_INTEN:       1197 [cnts/sec]
DATA_SIGNIF:     31.50 [sigma]
INTEG_TIME:      0.512 [sec]
GRB_DATE:        18859 TJD;    11 DOY;   20/01/11
GRB_TIME:        54668.11 SOD {15:11:08.11} UT
GRB_PHI:         180.00 [deg]
GRB_THETA:        80.00 [deg]
DATA_TIME_SCALE: 0.5120 [sec]
HARD_RATIO:      0.36
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      96%  GRB
2nd_MOST_LIKELY:   3%  Generic Transient
DETECTORS:       0,0,0, 0,0,0, 0,1,1, 1,0,1, 0,0,
SUN_POSTN:       292.54d {+19h 30m 11s}  -21.82d {-21d 49' 08"}
SUN_DIST:        176.48 [deg]   Sun_angle= 11.9 [hr] (West of Sun)
MOON_POSTN:      124.39d {+08h 17m 33s}  +21.74d {+21d 44' 23"}
MOON_DIST:        10.68 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:      193.89, 19.74 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      110.80,  3.51 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200111633/quicklook/glg_lc_medres34_bn200111633.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 92.27,-11.12 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 11 Jan 20 15:11:33 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      46
TRIGGER_NUM:     600448273
GRB_RA:          113.067d {+07h 32m 16s} (J2000),
                 113.371d {+07h 33m 29s} (current),
                 112.305d {+07h 29m 13s} (1950)
GRB_DEC:         +25.133d {+25d 07' 60"} (J2000),
                 +25.089d {+25d 05' 22"} (current),
                 +25.241d {+25d 14' 26"} (1950)
GRB_ERROR:       13.00 [deg radius, statistical plus systematic]
GRB_INTEN:       239 [cnts/sec]
DATA_SIGNIF:     9.70 [sigma]
INTEG_TIME:      1.024 [sec]
GRB_DATE:        18859 TJD;    11 DOY;   20/01/11
GRB_TIME:        54668.11 SOD {15:11:08.11} UT
GRB_PHI:         180.00 [deg]
GRB_THETA:        80.00 [deg]
DATA_TIME_SCALE: 1.0240 [sec]
HARD_RATIO:      0.38
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      94%  GRB
2nd_MOST_LIKELY:   3%  Generic Transient
DETECTORS:       0,0,0, 0,0,0, 0,1,1, 1,0,1, 0,0,
SUN_POSTN:       292.54d {+19h 30m 11s}  -21.82d {-21d 49' 08"}
SUN_DIST:        176.64 [deg]   Sun_angle= 11.9 [hr] (West of Sun)
MOON_POSTN:      124.38d {+08h 17m 32s}  +21.74d {+21d 44' 24"}
MOON_DIST:        10.64 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:      194.04, 19.66 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      110.81,  3.35 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200111633/quicklook/glg_lc_medres34_bn200111633.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 92.27,-11.12 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 11 Jan 20 15:12:28 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      0
TRIGGER_NUM:     600448273
GRB_RA:          102.170d {+06h 48m 41s} (J2000),
                 102.486d {+06h 49m 57s} (current),
                 101.380d {+06h 45m 31s} (1950)
GRB_DEC:         +28.720d {+28d 43' 12"} (J2000),
                 +28.696d {+28d 41' 46"} (current),
                 +28.777d {+28d 46' 37"} (1950)
GRB_ERROR:       6.30 [deg radius, statistical only]
DATA_SIGNIF:     15.00 [sigma]
DATA_INTERVAL:   6.144 [sec]
GRB_DATE:        18859 TJD;    11 DOY;   20/01/11
GRB_TIME:        54668.11 SOD {15:11:08.11} UT
GRB_PHI:         190.00 [deg]
GRB_THETA:        83.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41731 (Gnd S/W Version number)
SUN_POSTN:       292.54d {+19h 30m 11s}  -21.82d {-21d 49' 07"}
SUN_DIST:        168.61 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      124.39d {+08h 17m 35s}  +21.74d {+21d 44' 19"}
MOON_DIST:        20.97 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:      186.68, 12.11 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      100.71,  5.73 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200111633/quicklook/glg_lc_medres34_bn200111633.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_600448273.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This is likely a Long GRB.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(1.0<100sec) coincident with the CALET_GBM event (trignum=1262790473).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 11 Jan 20 15:12:35 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      1
TRIGGER_NUM:     600448273
GRB_RA:          103.320d {+06h 53m 17s} (J2000),
                 103.644d {+06h 54m 34s} (current),
                 102.511d {+06h 50m 03s} (1950)
GRB_DEC:         +31.730d {+31d 43' 48"} (J2000),
                 +31.704d {+31d 42' 14"} (current),
                 +31.792d {+31d 47' 32"} (1950)
GRB_ERROR:       3.18 [deg radius, statistical only]
DATA_SIGNIF:     29.70 [sigma]
DATA_INTERVAL:   7.168 [sec]
GRB_DATE:        18859 TJD;    11 DOY;   20/01/11
GRB_TIME:        54668.11 SOD {15:11:08.11} UT
GRB_PHI:         189.00 [deg]
GRB_THETA:        86.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41731 (Gnd S/W Version number)
SUN_POSTN:       292.54d {+19h 30m 11s}  -21.82d {-21d 49' 07"}
SUN_DIST:        167.33 [deg]   Sun_angle= -11.4 [hr] (East of Sun)
MOON_POSTN:      124.40d {+08h 17m 35s}  +21.74d {+21d 44' 19"}
MOON_DIST:        20.99 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:      184.27, 14.23 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      101.44,  8.82 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200111633/quicklook/glg_lc_medres34_bn200111633.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_600448273.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This is likely a Long GRB.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(1.0<100sec) coincident with the CALET_GBM event (trignum=1262790473).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 11 Jan 20 15:20:28 UT
NOTICE_TYPE:     Fermi-GBM Final Position
RECORD_NUM:      0
TRIGGER_NUM:     600448273
GRB_RA:          104.490d {+06h 57m 58s} (J2000),
                 104.813d {+06h 59m 15s} (current),
                 103.682d {+06h 54m 44s} (1950)
GRB_DEC:         +31.720d {+31d 43' 12"} (J2000),
                 +31.692d {+31d 41' 30"} (current),
                 +31.788d {+31d 47' 16"} (1950)
GRB_ERROR:       3.47 [deg radius, statistical only]
GRB_DATE:        18859 TJD;    11 DOY;   20/01/11
GRB_TIME:        54668.11 SOD {15:11:08.11} UT
GRB_PHI:         188.00 [deg]
GRB_THETA:        86.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41731 (Gnd S/W Version number)
SUN_POSTN:       292.55d {+19h 30m 12s}  -21.82d {-21d 49' 04"}
SUN_DIST:        167.96 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:      124.48d {+08h 17m 55s}  +21.73d {+21d 43' 39"}
MOON_DIST:        20.15 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:      184.68, 15.15 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      102.44,  8.90 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200111633/quicklook/glg_lc_medres34_bn200111633.gif
LOC_URL:         http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200111633/quicklook/glg_locplot_all_bn200111633.png
COMMENTS:        Fermi-GBM Final Position.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file should be available by the time this FINAL notice is produced.  
COMMENTS:        This notice was generated completely by automated pipeline processing.  
COMMENTS:        This is likely a Long GRB.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(1.0<100sec) coincident with the CALET_GBM event (trignum=1262790473).

GCN Circular #26705
The Fermi GBM team reports the detection of a likely LONG GRB
At 15:11:08 UT on 11 Jan 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200111A (trigger 600448273.105796 / 200111633).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 104.5, Dec = 31.7 (J2000 degrees, equivalent to J2000 06h 58m, 31d 41'), with a statistical uncertainty of 3.5 degrees.
The angle from the Fermi LAT boresight is 86.0 degrees.
The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200111633/quicklook/glg_skymap_all_bn200111633.png
The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200111633/quicklook/glg_healpix_all_bn200111633.fit
The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200111633/quicklook/glg_lc_medres34_bn200111633.gif
GCN Circular #26714
S. Xiao, Y. F. Du, Y. G. Zheng, C. Cai, Q. Luo, Q. B. Yi, Y. Huang, C. K. Li, G. Li, X. B. Li, J. Y. Liao, S. L. Xiong, C. Z. Liu, X. F. Li, Z. W. Li, Z. Chang, A. M. Zhang, Y. F. Zhang, X. F. Lu, C. L. Zou (IHEP), Y. J. Jin, Z. Zhang (THU), T. P. Li (IHEP/THU), F. J. Lu, L. M. Song, M. Wu, Y. P. Xu, S. N. Zhang (IHEP), report on behalf of the Insight-HXMT team:
At 2020-01-11T15:11:07.61 (T0), Insight-HXMT/HE detected GRB 200111A (trigger ID: HEB200111632) in a routine search of the data, which also triggered Fermi/GBM (GCN #26705).
The Insight-HXMT/HE light curve mainly consists of multiple pulses with a duration (T90) of 8.474 s measured from T0-0.030 s. The 1-ms peak rate, measured from T0+5.459 s, is 1355 cnts/sec. The total counts from this burst is 2111 counts. URL_LC: http://www.hxmt.org/images/GRB/HEB200111632_lc.jpg
All measurements above are made with the CsI detectors operating in the regular mode with the energy range of about 80-800 keV (deposited energy). Only gamma-rays with energy greater than about 200 keV can penetrate the spacecraft and leave signals in the CsI detectors installed inside of the telescope.
Insight-HXMT is the first Chinese space X-ray telescope, which was funded jointly by the China National Space Administration (CNSA) and the Chinese Academy of Sciences (CAS). More information about it could be found at: http://www.hxmt.org.
GCN Circular #26778
K. Hurley, on behalf of the IPN,
I. G. Mitrofanov, D. V. Golovin, A. S. Kozyrev, M. L. Litvak, and A. B. Sanin, on behalf of the HEND-Odyssey GRB team,
A. Ridnaia, S. Golenetskii, R. Aptekar, D. Frederiks, D. Svinkin, and T. Cline on behalf of the Konus-Wind team,
A. Goldstein, M. S. Briggs, and C. Wilson-Hodge on behalf of the Fermi GBM team,
A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo, and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,
S. Barthelmy, J. Cummings, H. Krimm, and D. Palmer, on behalf of the Swift-BAT team, and
W. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr, on behalf of the GRS-Odyssey GRB team, report:
The long-duration GRB 200111A (The Fermi GBM team, GCN Circ. 26705; Insight-HXMT/HE detection: Xiao et al., GCN Circ. 26714) was detected by Konus-Wind, Fermi (GBM trigger 600448273), INTEGRAL (SPI-ACS), Mars-Odyssey (HEND), Insight (HXMT/HE), and Swift (BAT) at about 54668 s UT (15:11:08). The burst was outside the coded field of view of the BAT.
We have triangulated it to a preliminary, 3 sigma error box whose coordinates are:
```
 ---------------------------------------------
  RA(2000), deg                 Dec(2000), deg
 ---------------------------------------------
 Center:
  107.869 (07h 11m 29s) +32.551 (+32d 33' 03")
 Corners:
  107.545 (07h 10m 11s) +34.162 (+34d 09' 42")
  107.747 (07h 10m 59s) +34.483 (+34d 28' 58")
  108.134 (07h 12m 32s) +30.686 (+30d 41' 10")
  107.920 (07h 11m 41s) +30.214 (+30d 12' 52")
 ---------------------------------------------
```
The error box area is about 2864 sq. arcmin, and its maximum dimension is 4.3 deg (the minimum one is 12.2 arcmin). The Sun distance was about 167 deg.
This box may be improved.
The IPN localization is consistent with, but reduces the area of, the Fermi-GBM one.
A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB200111_T54677/IPN/
The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular.
GCN Circular #26783
R. Gaikwad, S. Gupta, V. Sharma and D. Bhattacharya (IUCAA), V. Bhalerao (IIT-B), A. R. Rao (TIFR) and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:
Analysis of AstroSat CZTI data showed the detection of a GRB 200111A, which was also detected by Fermi GBM Final Real-time Localization (GCN #26705) and Insight-HXMT/HE (Xiao S. et al., GCN #26714).
The source was clearly detected in the 40-200 keV energy range. The light curve showed multiple peaks of emission peaking at 2020-01-11 15:11:09.0 UT. The measured peak count rate associated with the burst is 421 cts/s above the background in the combined data of four quadrants, with a total of 1251 cts. The local mean background count rate was 548 cts/s. Using cumulative rates, we measure a T90 of 8.6 s.
It was also clearly detected in the CsI anticoincidence (Veto) detector in the 100-500 keV energy range.
CZTI GRB detections are reported regularly on the payload site at http://astrosat.iucaa.in/czti/?q=grb. CZTI is built by a TIFR-led consortium of institutes across India, including VSSC, ISAC, IUCAA, SAC and PRL. The Indian Space Research Organisation funded, managed and facilitated the project.
GCN Circular #26795
S. Torii (Waseda U), A. Yoshida, T. Sakamoto, V. Pal'shin, S. Sugita (AGU), Y. Kawakubo (LSU), K. Yamaoka (Nagoya U), S. Nakahira (RIKEN), Y. Asaoka (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U), N. Cannady (GSFC/UMBC), M. L. Cherry (LSU), S. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena), and the CALET collaboration:
The long GRB 200111A (Fermi GBM Final Real-time Localization: The Fermi GBM team, GCN Circ. 26705; Insight-HXMT/HE detection: Xiao et al., GCN Circ. 26714; IPN triangulation: Hurley et al., GCN Circ. 26778; AstroSat CZTI detection: Gaikwad et al., GCN Circ. 26783; https://gcn.gsfc.nasa.gov/other/200111A.gcn3) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 15:11:07.610 UTC on 11 January 2020. The burst signal was seen by all CGBM detectors.
The burst light curve shows a multi-peaked structure followed by a short pulse. The emission starts at T+0.0 sec, peaks at T+6.0 sec and ends at T+6.4 sec. The T90 and T50 durations measured by the SGM data are 6.0 +- 0.5 sec and 3.9 +- 1.9 sec (40-1000 keV), respectively.
The ground processed light curve is available at
http://cgbm.calet.jp/cgbm_trigger/ground/1262790473/
The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.

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Jochen Greiner, last update: 20-Jan-2020 [Disclaimer ]