Gamma-ray Burst 101112A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Fri 12 Nov 10 22:10:39 UT
NOTICE_TYPE:    INTEGRAL Wakeup
TRIGGER_NUM:    6088,   Sub_Num: 0
GRB_RA:         292.2258d {+19h 28m 54s} (J2000),
                292.3191d {+19h 29m 17s} (current),
                291.7967d {+19h 27m 11s} (1950)
GRB_DEC:        +39.3691d {+39d 22' 09"} (J2000),
                +39.3920d {+39d 23' 31"} (current),
                +39.2647d {+39d 15' 53"} (1950)
GRB_ERROR:      2.85 [arcmin, radius, statistical only]
GRB_INTEN:      12.44 [sigma]
GRB_TIME:       79826.21 SOD {22:10:26.21} UT
GRB_DATE:       15512 TJD;   316 DOY;   10/11/12
SC_RA:          297.17 [deg] (J2000)
SC_DEC:          35.08 [deg] (J2000)
SUN_POSTN:      227.97d {+15h 11m 54s}  -17.85d {-17d 51' 01"}
SUN_DIST:        82.88 [deg]   Sun_angle= -4.3 [hr] (East of Sun)
MOON_POSTN:     313.59d {+20h 54m 22s}  -14.08d {-14d 04' 35"}
MOON_DIST:       57.03 [deg]
GAL_COORDS:      72.12, 10.21 [deg] galactic lon,lat of the burst
ECL_COORDS:     305.88, 60.07 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.  
COMMENTS:       Possibly real GRB event

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Fri 12 Nov 10 22:10:48 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      49
TRIGGER_NUM:     311292634
GRB_RA:          299.667d {+19h 58m 40s} (J2000),
                 299.757d {+19h 59m 02s} (current),
                 299.250d {+19h 57m 00s} (1950)
GRB_DEC:         +42.800d {+42d 47' 60"} (J2000),
                 +42.830d {+42d 49' 48"} (current),
                 +42.663d {+42d 39' 47"} (1950)
GRB_ERROR:       8.22 [deg radius, statistical plus systematic]
GRB_INTEN:       409 [cnts/sec]
DATA_SIGNIF:     15.80 [sigma]
INTEG_TIME:      1.024 [sec]
GRB_DATE:        15512 TJD;   316 DOY;   10/11/12
GRB_TIME:        79832.45 SOD {22:10:32.45} UT
GRB_PHI:          28.98 [deg]
GRB_THETA:       120.00 [deg]
DATA_TIME_SCALE: 1.0240 [sec]
HARD_RATIO:      1.02
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      97%  GRB
2nd_MOST_LIKELY:   1%  Generic SGR
DETECTORS:       0,0,1, 0,0,1, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:       227.97d {+15h 11m 54s}  -17.85d {-17d 51' 01"}
SUN_DIST:         89.44 [deg]   Sun_angle= -4.8 [hr] (East of Sun)
MOON_POSTN:      313.59d {+20h 54m 22s}  -14.08d {-14d 04' 34"}
MOON_DIST:        58.31 [deg]
MOON_ILLUM:      43 [%]
GAL_COORDS:       77.89,  6.95 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      319.09, 61.28 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 156.27,22.28 [deg].

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Fri 12 Nov 10 22:11:10 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      58
TRIGGER_NUM:     311292634
GRB_RA:          300.550d {+20h 02m 12s} (J2000),
                 300.646d {+20h 02m 35s} (current),
                 300.106d {+20h 00m 26s} (1950)
GRB_DEC:         +39.410d {+39d 24' 36"} (J2000),
                 +39.441d {+39d 26' 26"} (current),
                 +39.269d {+39d 16' 10"} (1950)
GRB_ERROR:       3.50 [deg radius, statistical only]
DATA_SIGNIF:     22.00 [sigma]
DATA_INTERVAL:   2.048 [sec]
GRB_DATE:        15512 TJD;   316 DOY;   10/11/12
GRB_TIME:        79832.45 SOD {22:10:32.45} UT
GRB_PHI:          25.00 [deg]
GRB_THETA:       120.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   413 (Gnd S/W Version number)
SUN_POSTN:       227.97d {+15h 11m 54s}  -17.85d {-17d 51' 02"}
SUN_DIST:         88.61 [deg]   Sun_angle= -4.8 [hr] (East of Sun)
MOON_POSTN:      313.60d {+20h 54m 23s}  -14.08d {-14d 04' 30"}
MOON_DIST:        54.86 [deg]
MOON_ILLUM:      43 [%]
GAL_COORDS:       75.33,  4.62 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      317.65, 57.90 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.

GCN NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Fri 12 Nov 10 22:10:52 UT
NOTICE_TYPE:    INTEGRAL Refined
TRIGGER_NUM:    6088,   Sub_Num: 1
GRB_RA:         292.2246d {+19h 28m 54s} (J2000),
                292.3179d {+19h 29m 16s} (current),
                291.7954d {+19h 27m 11s} (1950)
GRB_DEC:        +39.3559d {+39d 21' 21"} (J2000),
                +39.3788d {+39d 22' 44"} (current),
                +39.2515d {+39d 15' 06"} (1950)
GRB_ERROR:      2.58 [arcmin, radius, statistical only]
GRB_INTEN:      25.36 [sigma]
GRB_TIME:       79834.21 SOD {22:10:34.21} UT
GRB_DATE:       15512 TJD;   316 DOY;   10/11/12
SC_RA:          297.17 [deg] (J2000)
SC_DEC:          35.08 [deg] (J2000)
SUN_POSTN:      227.97d {+15h 11m 54s}  -17.85d {-17d 51' 01"}
SUN_DIST:        82.87 [deg]   Sun_angle= -4.3 [hr] (East of Sun)
MOON_POSTN:     313.59d {+20h 54m 23s}  -14.08d {-14d 04' 33"}
MOON_DIST:       57.02 [deg]
GAL_COORDS:      72.11, 10.21 [deg] galactic lon,lat of the burst
ECL_COORDS:     305.87, 60.06 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.  
COMMENTS:           
COMMENTS:        NOTE: This INTEGRAL event is temporally(2.0<100sec) coincident with the FERMI_GBM event (trignum=311292634).  
COMMENTS:       Possibly real GRB event

GCN NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Fri 12 Nov 10 22:13:39 UT
NOTICE_TYPE:    INTEGRAL Refined
TRIGGER_NUM:    6088,   Sub_Num: 2
GRB_RA:         292.2263d {+19h 28m 54s} (J2000),
                292.3196d {+19h 29m 17s} (current),
                291.7971d {+19h 27m 11s} (1950)
GRB_DEC:        +39.3536d {+39d 21' 13"} (J2000),
                +39.3765d {+39d 22' 35"} (current),
                +39.2492d {+39d 14' 57"} (1950)
GRB_ERROR:      2.58 [arcmin, radius, statistical only]
GRB_INTEN:      24.88 [sigma]
GRB_TIME:       79836.21 SOD {22:10:36.21} UT
GRB_DATE:       15512 TJD;   316 DOY;   10/11/12
SC_RA:          297.17 [deg] (J2000)
SC_DEC:          35.08 [deg] (J2000)
SUN_POSTN:      227.98d {+15h 11m 54s}  -17.85d {-17d 51' 03"}
SUN_DIST:        82.87 [deg]   Sun_angle= -4.3 [hr] (East of Sun)
MOON_POSTN:     313.62d {+20h 54m 28s}  -14.07d {-14d 04' 04"}
MOON_DIST:       57.02 [deg]
GAL_COORDS:      72.11, 10.20 [deg] galactic lon,lat of the burst
ECL_COORDS:     305.87, 60.06 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.  
COMMENTS:           
COMMENTS:        NOTE: This INTEGRAL event is temporally(4.0<100sec) coincident with the FERMI_GBM event (trignum=311292634).  
COMMENTS:       Possibly real GRB event

GCN Circular #11396
D. Gotz (CEA-Saclay), S.Mereghetti, A.Paizis (IASF- Milano), E. Bozzo, V. Savchenko, C. Ferrigno, M. Beck (ISDC, Versoix), and J. Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report: a long gamma ray burst lasting about 10 s has been detected by IBAS in the IBIS/ISGRI data at 22:10:24 U.T. on November 12th. Its refined coordinates (J2000) are:
```
R.A. =  292.218347 (deg)
Dec. = +39.359032 (deg)
```
with an uncertainty of 1.3 arcmin (90% c.l.).
A preliminary analysis gives a 20-200 keV fluence of about 6e-7 erg/ cm2 and a peak flux of about 1.6 ph/cm2 s (1 s integration time).
A plot of the light curve will be posted at
http://ibas.iasf-milano.inaf.it/IBAS_Results.html
This message can be cited.

GCN NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Fri 12 Nov 10 23:04:51 UT
NOTICE_TYPE:    INTEGRAL Offline
TRIGGER_NUM:    6088,   Sub_Num: 3
GRB_RA:         292.2182d {+19h 28m 52s} (J2000),
                292.3115d {+19h 29m 15s} (current),
                291.7890d {+19h 27m 09s} (1950)
GRB_DEC:        +39.3590d {+39d 21' 32"} (J2000),
                +39.3819d {+39d 22' 55"} (current),
                +39.2547d {+39d 15' 17"} (1950)
GRB_ERROR:      1.30 [arcmin, radius, statistical only]
GRB_INTEN:      24.88 [sigma]
GRB_TIME:       79836.21 SOD {22:10:36.21} UT
GRB_DATE:       15512 TJD;   316 DOY;   10/11/12
SC_RA:          297.17 [deg] (J2000)
SC_DEC:          35.08 [deg] (J2000)
SUN_POSTN:      228.01d {+15h 12m 03s}  -17.86d {-17d 51' 38"}
SUN_DIST:        82.85 [deg]   Sun_angle= -4.3 [hr] (East of Sun)
MOON_POSTN:     314.03d {+20h 56m 08s}  -13.92d {-13d 55' 16"}
MOON_DIST:       57.02 [deg]
GAL_COORDS:      72.11, 10.21 [deg] galactic lon,lat of the burst
ECL_COORDS:     305.86, 60.06 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.  
COMMENTS:           
COMMENTS:        NOTE: This INTEGRAL event is temporally(4.0<100sec) coincident with the FERMI_GBM event (trignum=311292634).  
COMMENTS:       refined_coordinates_after_offline_analysis

GCN Circular #11397
C. Guidorzi (U. Ferrara), R.J. Smith, C.G. Mundell, I.A. Steele, S Kobayashi (Liverpool JMU), A. Gomboc (U. Ljubljana), report on behalf of a larger collaboration:
The 2-m Liverpool Telescope robotically followed up INTEGRAL GRB 101112A (Gotz et al. GCN Circ. 11396). The automatic analysis pipeline LT-TRAP identified a fading afterglow candidate at:
RA 19:28:54.87 Dec +39:21:11.1 (J2000)
with position uncertainty 0.4 arcsec and with
```
R=15.99 +- 0.02 mag @ 7.7 min
R=17.05 +- 0.03 mag @ 19.2 min
```
Photometric calibration is wrt USNOB-1 star at 19:28:54.733, +39:21:00.87 with R2=16.15.
GCN Circular #11398
GRB 101112A: BOOTES-2/TELMA optical afterglow candidate
A. de Ugarte Postigo (DARK/NBI Copenhagen), P. Kubanek (IPL Univ. of=20 Valencia), J. C. Tello, R. Ssnchez-Ramirez, M. Jeli=ADnek, P. Kubanek, R. Cunniffe, S. Guziy, J. Gorosabel (IAA-CSIC Granada), R. Fernandez-Mu=F1oz (EELM-CSIC), S. Castillo-Carrion, C. Perez del Pulgar (Univ. of Malaga), L. Sabau-Graziati (INTA) and A. J. Castro-Tirado (IAA-CSIC) report:
"Following the detection of GRB 101112A by INTEGRAL (Gotz et al. GCNC=20 11396), the 0.6m TELMA robotic telescope at the BOOTES-2 station in=20 Malaga (Southern Spain) responded 31 s after reception of the GCN alert=20 (i.e. 109 s after the onset of the event). Within the IBIS/INTEGRAL=20 error box, we find a source not present at the DSS-2 red at coordinates=20 (J2000) R.A.:19:28:54.88, Dec: +39:21:11.6 (error =B1 0".5). We measure R about 18 for the co-added 31 first images (3-s each, using an r' band=20 filter, at mid exposure time 22:12 UT, i.e. 156-s after the onset of the=20 burst). The source has gone in the images taken at later times so we=20 propose this to be the optical afterglow to GRB 101112A. Further=20 observations are in progress. Multiwavelength observations (including=20 optical spectroscopy) are requested."
This message can be quoted.
GCN Circular #11399
P.A. Evans (U. Leicester) and H. A. Krimm (CRESST/GSFC/USRA), report on behalf of the Swift-XRT team:
We have analysed 5.6 ks of XRT data for GRB 101112A (Gotz et al. GCN Circ. 11396), from 6215 s to 18.4 ks after the INTEGRAL trigger. The data are entirely in Photon Counting (PC) mode. We find an uncatalogued, fading point source at RA, Dec=292.2295, 39.3531 which is equivalent to:
```
RA(J2000.0):   19h 28m 55.08s
Dec (J2000.0): +39d 21' 11.0"
```
with an estimated uncertainty of 4 arcsec (radius, 90% confidence). This position is 38 arcsec from the INTEGRAL position, and 2.4 arcsec from the optical afterglow of Guidorzi et al (GCN Circ 11397), in agreement with both of these positions.
The X-ray light curve can be modelled with a power-law decay with a decay index of alpha=0.9 (+/-0.6). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.2 (+/-0.4). The best-fitting absorption column is 2.0 (+1.2, -0.7) x 10^21 cm^-2, consistent with the Galactic value of 1.2 x 10^21 cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.7 x 10^-11 (5.9 x 10^-11) erg cm^-2 count^-1.
If the light curve continues to decay with a power-law decay index of 0.9, the count rate at T+24 hours will be 3.7 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.4 x 10^-13 (2.2 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/00020149.
This circular is an official product of the Swift-XRT team.
GCN Circular #11400
S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, report:
The long GRB 101112A, (localized by INTEGRAL: Gotz et.al, GCN 11396) triggered Konus-Wind at T0=3D79831.681s UT (22:10:31.681)
The burst light curve shows a single pulse with a total duration of ~15 s. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB101112_T79831/
As observed by Konus-Wind the burst had a fluence of (1.95 =B1 0.45)x10-6 erg/cm2, and a 256-ms peak flux, measured from T0, of (0.85 =B1 0.25)x10-6 erg/cm2/s (both in the 20 keV - 1 MeV energy range).
The time-integrated spectrum of the burst (from T0 to T0+8.448 s) is best fit in the 20 keV - 1 MeV range by a power law with exponential cutoff model, for which alpha =3D -0.4(-0.7, +1.0), and Ep =3D 107(-22, +39) keV (chi2 =3D 28/50 dof).
The spectrum at the maximum count rate (measured from T0 to T0+0.256 s) is best fit in the 20 keV - 1 MeV range by a power law with exponential cutoff model, for which alpha =3D -0.75(-0.6, +0.9), and Ep =3D 132(-38, +72) keV (chi2 =3D 6/14 dof).
All the quoted results are preliminary. All the quoted errors are at the 90% confidence level.
GCN Circular #11402
A. Pozanenko (IKI), M. Ibrahimov (MAO), A. Volnova (SAI MSU), B. Satovski (Astrotel) report on behalf of larger GRB follow-up collaboration:
We observed the field of INTEGRAL GRB 101112A (Gotz et al., GCN 11396) with AZT-22 telescope of Maidanak observatory between Nov. 13 (UT) 13:37:57 -- 14:05:56.Totally we obtained 6 images of 300 s exposure in R filter. The afterglow (Guidorzi et al. GCN 11397; A. de Ugarte Postigo et al. GCN 11398) is not visible on single images, and upper limit of the single image is R~20m at Nov.13 (UT) 13:40. The result above is preliminary.
We thank Olga Ezhkova for performing the observations and for support.
GCN Circular #11403
A. Goldstein (UAH) reports on behalf of the Fermi GBM Team:
"At 22:10:32.45 UT on 12 November 2010, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 101112A (trigger 311292634 / 101112924) which was also detected by INTEGRAL (Gotz et al. 2010, GCN 11396) The GBM on-ground location is consistent with the INTEGRAL position.
The GBM lightcurve consists of a single bright pulse at trigger time preceded by a smaller pulse ~6 s before trigger time with a total duration (T90) of about 9.2 s (50-300 keV). The time-averaged spectrum from T0-6.1 s to T0+4.1 s is best fit by a Band function with Epeak = 105.8 +/- 26.0 keV, alpha = -0.79 +/- 0.24, and beta = -2.02 +/- 0.15 (Castor C-Stat 420.5 for 359 d.o.f.).
The event fluence (8-1000 keV) in this time interval is (2.96 +/- 0.21)E-6 erg/cm^2. The 1-sec peak photon flux measured starting from T0+0.13 s in the 8-1000 keV band is 8.08 +/- 0.41 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN Circular #11404
"Poonam Chandra (RMC), Dale A. Frail (NRAO) and S. Bradley Cenko (Berkeley) report on behalf of a larger collaboration:
We observed the INTEGRAL long burst GRB 101112A (Gotz et al. GCN 11396)=20 with the Expanded Very Large Array (EVLA) in 33.56 GHz frequency on 2010 November 13 starting at 01:11:17 UT, around 3 hours after the detection of the GRB. We have a possible detection of the radio afterglow within the Liverpool telescope optical error circle (Guidorzi et al. GCN 11397) with a flux=20 density of 149+/54 uJy. The peak flux position of the radio afterglow is J2000: RA 19:28:54.88, Dec 39:21:10.81.=20
Note that this is the fastest response of a GRB alert by the EVLA which is currently in the commissioning phase. We thank the EVLA staff for scheduling our observations so promptly. The=20 National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."
GCN Circular #11419
T. A. Fatkhullin, V. N. Komarova, V.V. Sokolov, A.S. Moskvitin (SAO-RAS), J. Gorosabel, A. Sota and A.J. Castro-Tirado (IAA-CSIC), A. de Ugarte Postigo (DARK/NBI), on behalf of a larger collaboration, report:
"Following the detection of the optical afterglow to the INTEGRAL GRB 101112A (Gotz et al., GCNC 11396), we have undertaken observations of the region with the 1.5-m telescope at Sierra Nevada Obs. (Spain) on Nov 13 and with the 6.0-m BTA at SAO-RAS in Zelenchukskaia (Russia) on Nov 14 and Nov 15. At the location of the optical afterglow (Guidorzi et al., GCNC 11397, de Ugarte Postigo et al., GCNC 11398) a faint source with R-band magnitude about 23 was detected on Nov 14.766 UT, which was below the detection limit on Nov 15.838 UT. This value should be compared with R = 15.6, as derived from the BOOTES-2/TELMA early time images on Nov 12.9260 UT (a value that supersedes the one given on GCNC 11398 which was based on a wrong photometric calibration). The fact that the optical counterpart is blended (1."2) with a brighter star (with R about 18) has made useless the attempted spectroscopy on Nov 14.8 UT."
This message can be quoted.
GCN Circular #11616
GRB 101112A: Maidanak and CrAO optical observations
A. Volnova (SAI MSU), A. Pozanenko (IKI), =EF. Ezhkova (SAI MSU), M. Ibrahimov (MAO), V. Rumyantsev (CrAO), K. Antoniuk (CrAO), B. Satovski (Astrotel) report on behalf of larger GRB follow-up collaboration:
We observed the field of the INTEGRAL GRB 101112A (Gotz et al., GCN 11396) with AZT-22 telescope of =9AMAO observatory in R-band on Nov.13 between (UT) 13:37:57 - 14:10:56 (Pozanenko et al, GCN 11402) and Nov.14 between (UT) 14:42:43 - 15:15:49 under good weather conditions and seeing ~0.9". =9ABoth observational sequences consist of 6 images with exposure of 300 seconds. Additionally =9Awe =9Aobserved the field =9Awith =9AAZT-11 telescope of C= rAO in R-band on Nov.13 between (UT) 16:07:10 - 16:52:23.
Near the position of the optical afterglow (Guidorzi et al.GCN 11397, A. de Ugarte Postigo et al. GCN 11398) there are two bright stars. They are not separated on DSS and are included in USNO-B1.0 like a single source USNO-B1.0 1293-0343482 (R =3D 18.77). In our images the stars is well separated at the distance 2.7" between them.
The afterglow is in the wing of the southern star. =9AThe star has the magnitude R =3D 19.2 +/- 0.08 and coordinates (J2000) RA =3D 19:28:54.947= , Dec =3D +39:21:12.29 =9Awith position uncertainty of 0.15 arcsec. =9AAfter subtraction of a PSF-like profile of the star from stacked image of Nov.13 in the XRT error circle (Evans et al., GCN 11399) we found a faint source in coordinates (J2000) RA =3D 19:28:54.856, Dec =3D +39:21:10.67 =9Awith position uncertainty of 0.2 arcsec. This position is in agreement with afterglow coordinates reported by Guidorzi et al. (GCN 11397). The distance between southern star and optical afterglow is ~ 1.9". Using the same procedure we do not detect the afterglow on Nov.14 up to 22.5m.
The photometry of the sources based on several field stars from USNO-B1.0:
t-t0 (d), filter tstart =9Aexp.,s ,d OT =9A =9Auplim(3 sigma) telescope
0.65558 R =9A13:37:57 =9A6*300 =9A22.2+/-0.20 =9A22.5 =9A =9A =9AAZT-22
0.76346 R =9A16:07:10 15*180 =9An/d =9A =9A =9A =9A =9A =9A 21.1 =9A =9A = =9AAZT-11
1.70060 R =9A14:42:43 =9A6*300 =9A n/d =9A =9A =9A =9A =9A =9A 22.5 =9A =9A= =9AAZT-22
Taken together all published photometry of the afterglow (Guidorzi et al.GCN 11397, Fatkhullin et al. GCN 11419) =9Awe obtained light curve which can be fairly well described by single power law with alpha=-1.08. The finding chart as well as light curve of the GRB 101112A can be found at http://grb.rssi.ru/GRB101112A/

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Jochen Greiner, last update: 28-Jan-2011 [Disclaimer]