Gamma-ray Burst 201105A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Mon 07 Dec 20 23:27:29 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      58
TRIGGER_NUM:     629076420
GRB_RA:          139.467d {+09h 17m 52s} (J2000),
                 139.666d {+09h 18m 40s} (current),
                 138.991d {+09h 15m 58s} (1950)
GRB_DEC:         -42.283d {-42d 16' 59"} (J2000),
                 -42.372d {-42d 22' 18"} (current),
                 -42.072d {-42d 04' 20"} (1950)
GRB_ERROR:       7.85 [deg radius, statistical plus systematic]
GRB_INTEN:       575 [cnts/sec]
DATA_SIGNIF:     27.30 [sigma]
INTEG_TIME:      2.048 [sec]
GRB_DATE:        19190 TJD;   342 DOY;   20/12/07
GRB_TIME:        84415.73 SOD {23:26:55.73} UT
GRB_PHI:         258.00 [deg]
GRB_THETA:       110.00 [deg]
DATA_TIME_SCALE: 2.0480 [sec]
HARD_RATIO:      0.60
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      96%  GRB
2nd_MOST_LIKELY:   3%  Generic Transient
DETECTORS:       0,0,0, 0,1,0, 0,0,1, 0,0,0, 0,0,
SUN_POSTN:       255.16d {+17h 00m 38s}  -22.73d {-22d 44' 03"}
SUN_DIST:         91.88 [deg]   Sun_angle= 7.7 [hr] (West of Sun)
MOON_POSTN:      168.98d {+11h 15m 54s}  +10.50d {+10d 30' 15"}
MOON_DIST:        59.30 [deg]
MOON_ILLUM:      51 [%]
GAL_COORDS:      266.34,  4.93 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      162.85,-53.95 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201207977/quicklook/glg_lc_medres34_bn201207977.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 55.82,21.12 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Mon 07 Dec 20 23:27:20 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      44
TRIGGER_NUM:     629076420
GRB_RA:          139.733d {+09h 18m 56s} (J2000),
                 139.933d {+09h 19m 44s} (current),
                 139.256d {+09h 17m 01s} (1950)
GRB_DEC:         -42.167d {-42d 10' 00"} (J2000),
                 -42.256d {-42d 15' 20"} (current),
                 -41.955d {-41d 57' 17"} (1950)
GRB_ERROR:       15.62 [deg radius, statistical plus systematic]
GRB_INTEN:       203 [cnts/sec]
DATA_SIGNIF:     10.20 [sigma]
INTEG_TIME:      2.048 [sec]
GRB_DATE:        19190 TJD;   342 DOY;   20/12/07
GRB_TIME:        84415.73 SOD {23:26:55.73} UT
GRB_PHI:         258.00 [deg]
GRB_THETA:       110.00 [deg]
DATA_TIME_SCALE: 2.0480 [sec]
HARD_RATIO:      0.49
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      95%  GRB
2nd_MOST_LIKELY:   4%  Generic Transient
DETECTORS:       0,0,0, 0,1,0, 0,0,1, 0,0,0, 0,0,
SUN_POSTN:       255.16d {+17h 00m 38s}  -22.73d {-22d 44' 03"}
SUN_DIST:         91.78 [deg]   Sun_angle= 7.7 [hr] (West of Sun)
MOON_POSTN:      168.97d {+11h 15m 54s}  +10.50d {+10d 30' 17"}
MOON_DIST:        59.09 [deg]
MOON_ILLUM:      51 [%]
GAL_COORDS:      266.40,  5.15 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      163.04,-53.75 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201207977/quicklook/glg_lc_medres34_bn201207977.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 55.82,21.12 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Mon 07 Dec 20 23:27:38 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      57
TRIGGER_NUM:     629076420
GRB_RA:          122.420d {+08h 09m 41s} (J2000),
                 122.566d {+08h 10m 16s} (current),
                 122.072d {+08h 08m 17s} (1950)
GRB_DEC:         -51.250d {-51d 15' 00"} (J2000),
                 -51.313d {-51d 18' 44"} (current),
                 -51.101d {-51d 06' 04"} (1950)
GRB_ERROR:       3.92 [deg radius, statistical only]
DATA_SIGNIF:     23.40 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        19190 TJD;   342 DOY;   20/12/07
GRB_TIME:        84415.73 SOD {23:26:55.73} UT
GRB_PHI:         247.00 [deg]
GRB_THETA:       121.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4173 (Gnd S/W Version number)
SUN_POSTN:       255.16d {+17h 00m 38s}  -22.73d {-22d 44' 03"}
SUN_DIST:         95.08 [deg]   Sun_angle= 8.8 [hr] (West of Sun)
MOON_POSTN:      168.98d {+11h 15m 54s}  +10.50d {+10d 30' 13"}
MOON_DIST:        73.65 [deg]
MOON_ILLUM:      51 [%]
GAL_COORDS:      266.18, -9.74 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      152.52,-67.77 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201207977/quicklook/glg_lc_medres34_bn201207977.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_629076420.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:     Mon 07 Dec 20 23:28:32 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      2
TRIGGER_NUM:     629076420
GRB_RA:          124.210d {+08h 16m 50s} (J2000),
                 124.361d {+08h 17m 27s} (current),
                 123.849d {+08h 15m 24s} (1950)
GRB_DEC:         -50.490d {-50d 29' 23"} (J2000),
                 -50.556d {-50d 33' 19"} (current),
                 -50.334d {-50d 20' 02"} (1950)
GRB_ERROR:       2.26 [deg radius, statistical only]
DATA_SIGNIF:     34.20 [sigma]
DATA_INTERVAL:   12.288 [sec]
GRB_DATE:        19190 TJD;   342 DOY;   20/12/07
GRB_TIME:        84415.73 SOD {23:26:55.73} UT
GRB_PHI:         248.00 [deg]
GRB_THETA:       120.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41731 (Gnd S/W Version number)
SUN_POSTN:       255.16d {+17h 00m 38s}  -22.73d {-22d 44' 03"}
SUN_DIST:         94.84 [deg]   Sun_angle= 8.7 [hr] (West of Sun)
MOON_POSTN:      168.98d {+11h 15m 56s}  +10.50d {+10d 30' 01"}
MOON_DIST:        72.31 [deg]
MOON_ILLUM:      51 [%]
GAL_COORDS:      266.14, -8.37 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      153.82,-66.51 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201207977/quicklook/glg_lc_medres34_bn201207977.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_629076420.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 INTEGRAL_SPIACS event (trignum=8882).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Mon 07 Dec 20 23:28:41 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      3
TRIGGER_NUM:     629076420
GRB_RA:          124.120d {+08h 16m 29s} (J2000),
                 124.271d {+08h 17m 05s} (current),
                 123.759d {+08h 15m 02s} (1950)
GRB_DEC:         -50.500d {-50d 30' 00"} (J2000),
                 -50.566d {-50d 33' 55"} (current),
                 -50.345d {-50d 20' 39"} (1950)
GRB_ERROR:       1.50 [deg radius, statistical only]
DATA_SIGNIF:     46.90 [sigma]
DATA_INTERVAL:   16.384 [sec]
GRB_DATE:        19190 TJD;   342 DOY;   20/12/07
GRB_TIME:        84415.73 SOD {23:26:55.73} UT
GRB_PHI:         248.00 [deg]
GRB_THETA:       120.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41731 (Gnd S/W Version number)
SUN_POSTN:       255.16d {+17h 00m 38s}  -22.73d {-22d 44' 03"}
SUN_DIST:         94.88 [deg]   Sun_angle= 8.7 [hr] (West of Sun)
MOON_POSTN:      168.99d {+11h 15m 57s}  +10.50d {+10d 29' 59"}
MOON_DIST:        72.36 [deg]
MOON_ILLUM:      51 [%]
GAL_COORDS:      266.12, -8.43 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      153.72,-66.55 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201207977/quicklook/glg_lc_medres34_bn201207977.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_629076420.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 INTEGRAL_SPIACS event (trignum=8882).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Mon 07 Dec 20 23:28:53 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      4
TRIGGER_NUM:     629076420
GRB_RA:          124.010d {+08h 16m 02s} (J2000),
                 124.161d {+08h 16m 39s} (current),
                 123.649d {+08h 14m 36s} (1950)
GRB_DEC:         -50.500d {-50d 30' 00"} (J2000),
                 -50.565d {-50d 33' 54"} (current),
                 -50.345d {-50d 20' 41"} (1950)
GRB_ERROR:       1.06 [deg radius, statistical only]
DATA_SIGNIF:     53.90 [sigma]
DATA_INTERVAL:   20.480 [sec]
GRB_DATE:        19190 TJD;   342 DOY;   20/12/07
GRB_TIME:        84415.73 SOD {23:26:55.73} UT
GRB_PHI:         248.00 [deg]
GRB_THETA:       120.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41731 (Gnd S/W Version number)
SUN_POSTN:       255.16d {+17h 00m 38s}  -22.73d {-22d 44' 04"}
SUN_DIST:         94.92 [deg]   Sun_angle= 8.7 [hr] (West of Sun)
MOON_POSTN:      168.99d {+11h 15m 57s}  +10.50d {+10d 29' 56"}
MOON_DIST:        72.41 [deg]
MOON_ILLUM:      51 [%]
GAL_COORDS:      266.08, -8.49 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      153.57,-66.59 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201207977/quicklook/glg_lc_medres34_bn201207977.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_629076420.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 INTEGRAL_SPIACS event (trignum=8882).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Mon 07 Dec 20 23:36:17 UT
NOTICE_TYPE:     Fermi-GBM Final Position
RECORD_NUM:      0
TRIGGER_NUM:     629076420
GRB_RA:          124.140d {+08h 16m 34s} (J2000),
                 124.291d {+08h 17m 10s} (current),
                 123.779d {+08h 15m 07s} (1950)
GRB_DEC:         -50.490d {-50d 29' 23"} (J2000),
                 -50.556d {-50d 33' 19"} (current),
                 -50.334d {-50d 20' 03"} (1950)
GRB_ERROR:       2.39 [deg radius, statistical only]
GRB_DATE:        19190 TJD;   342 DOY;   20/12/07
GRB_TIME:        84415.73 SOD {23:26:55.73} UT
GRB_PHI:         248.00 [deg]
GRB_THETA:       120.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41731 (Gnd S/W Version number)
SUN_POSTN:       255.16d {+17h 00m 39s}  -22.74d {-22d 44' 05"}
SUN_DIST:         94.88 [deg]   Sun_angle= 8.7 [hr] (West of Sun)
MOON_POSTN:      169.05d {+11h 16m 13s}  +10.47d {+10d 28' 18"}
MOON_DIST:        72.35 [deg]
MOON_ILLUM:      51 [%]
GAL_COORDS:      266.11, -8.41 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      153.73,-66.54 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201207977/quicklook/glg_lc_medres34_bn201207977.gif
LOC_URL:         http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201207977/quicklook/glg_locplot_all_bn201207977.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 INTEGRAL_SPIACS event (trignum=8882).

GCN Circular #28996
The Fermi GBM team reports the detection of a likely LONG GRB
At 23:26:55 UT on 7 Dec 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 201207A (trigger 629076420.72719 / 201207977).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 124.1, Dec = -50.5 (J2000 degrees, equivalent to J2000 08h 16m, -50d 30'), with a statistical uncertainty of 2.4 degrees.
The angle from the Fermi LAT boresight is 120.0 degrees.
The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201207977/quicklook/glg_skymap_all_bn201207977.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/bn201207977/quicklook/glg_healpix_all_bn201207977.fit
The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201207977/quicklook/glg_lc_medres34_bn201207977.gif
GCN Circular #28997
V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (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, O.Ershova (Irkutsk State University, API),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
V. Yurkov, A. Gabovich, Yu. Sergienko (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) started inspect of the Fermi GRB 201207A ( Fermi GBM team, GCN 28996) errorbox 3980 sec after notice time and 4062 sec after trigger time at 2020-12-08 00:34:37 UT, with upper limit up to 16.0 mag. Observations started at twilight. The observations began at zenith distance = 76 deg. The sun altitude is -12.7 deg.
The galactic latitude b = -8 deg., longitude l = 266 deg.
Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1497702
We obtain a following upper limits.
```
Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

    4092 | 2020-12-08 00:34:37 |         MASTER-OAFA | (08h 10m 40.49s , -49d 15m 18.0s) |   C |    60 | 16.0 |
```
Filter C is a clear (unfiltred) band.
The observation and reduction will continue. The message may be cited.
GCN Circular #29000
S. Gupta, P. Sawant, V. Sharma, A. Vibhute and D. Bhattacharya (IUCAA), V. Bhalerao (IIT-B), A. R. Rao (IUCAA/TIFR) and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:
Analysis of AstroSat CZTI data showed detection of a bright long GRB 201207A, which was also detected by Fermi GBM Final Real-time (GCN #28996) and Global MASTER-Net (Lipunov V. et al., GCN #28997).
The source was clearly detected in the 40-200 keV energy range. The light curve showed multiple peaks of emission with the strongest peak at 2020-12-07 23:27:02.669 UT. The measured peak count rate associated with the burst is 283 +/- 24 cts/s above the background in the combined data of four quadrants, with a total of 2494 +/- 34 cts. The local mean background count rate was 509 +/- 1 cts/s. Using cumulative rates, we measure a T90 of 18.3 +/- 0.4 s.
It was also clearly detected in the CsI anticoincidence (Veto) detector in the 100-500 keV energy range. The light curve showed multiple peaks of emission with the strongest peak at 2020-12-07 23:27:01.628 UT. The measured peak count rate is 820 +/- 40 cts/s above the background in the combined Veto data of four quadrants, with a total of 5754 +/- 46 cts. The local mean background count rate was 1467 +/- 1 cts/s. We measure a T90 of 19.6 +/- 0.3 s from the cumulative Veto light curve.
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 #29010
A. Ursi (INAF/IAPS), C. Pittori, F. Verrecchia (SSDC, and INAF/OAR), F. Longo (Univ. Trieste and INFN Trieste), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), A. Argan, M. Cardillo, C. Casentini, Y. Evangelista, G. Piano (INAF/IAPS), F. Lucarelli (SSDC, and INAF/OAR), A. Bulgarelli, V. Fioretti, F. Fuschino, N. Parmiggiani (INAF/OAS-Bologna), M. Marisaldi (INAF/OAS-Bologna, and Bergen University), M. Pilia, A. Trois (INAF/OA-Cagliari), I. Donnarumma (ASI), A. Giuliani (INAF/IASF-Mi), report on behalf of the AGILE Team:
The AGILE satellite detected the long GRB 201207A at T0 = 2020-12-07 23:26:59 (UTC), reported by Fermi/GBM (GCN #28996) and AstroSat CZTI (GCN #29000).
The burst is clearly visible in the AGILE scientific ratemeters of the SuperAGILE (SA; 20-60 keV), MiniCALorimeter (MCAL; 0.4-100 MeV), and AntiCoincidence (AC; 50-200 keV) detectors. The event lasted ~6 s and released a total number of 640 counts in the SA detector (above a background rate of 90 Hz), 8045 counts in the MCAL detector (above a background rate of 1270 Hz), and 22670 counts in the AC detector (above a background rate of 3630 Hz). The AGILE ratemeter light curves can be found at http://www.agilescienceapp.it/notices/GRB_201207A_AGILE_RM.png .
The event also triggered a partial high time resolution MCAL data acquisition.
Additional analysis of AGILE data is in progress. Automatic MCAL GRB alert Notices can be found at: https://gcn.gsfc.nasa.gov/agile_mcal.html.
GCN Circular #29020
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,
A. Ursi, F. Verrecchia, M. Tavani, N. Parmiggiani, C. Pittori, A. Bulgarelli, on behalf of the AGILE 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 201207A (Fermi-GBM detection: The Fermi GBM Team, GCN Circ. 28996; AstroSat-CZTI detection: Gupta et al., GCN Circ. 29000; AGILE detection: Ursi et al., GCN Circ. 29010) was detected by Fermi (GBM trigger 629076420), Konus-Wind, INTEGRAL (SPI-ACS), Mars-Odyssey (HEND), AstroSat (CZTI), and AGILE (MCAL) at about 84414 s UT (23:26:54).
We have triangulated it to a preliminary, 3 sigma error box whose coordinates are:
```
 ---------------------------------------------
  RA(2000), deg                 Dec(2000), deg
 ---------------------------------------------
 Center:
  120.193 (08h 00m 46s) -49.327 (-49d 19' 36")
 Corners:
  119.115 (07h 56m 27s) -48.611 (-48d 36' 40")
  119.340 (07h 57m 22s) -50.448 (-50d 26' 55")
  121.306 (08h 05m 13s) -50.030 (-50d 01' 48")
  121.014 (08h 04m 03s) -48.193 (-48d 11' 36")
 ---------------------------------------------
```
The error box area is 2.4 sq. deg, and its maximum dimension is 2.5 deg (the minimum one is 1.3 deg). The Sun distance was 97 deg.
This box may be improved.
A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB201207_T84417/IPN/
The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular.

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Jochen Greiner, last update: 10-Dec-2020 [Disclaimer]