GRB 220111A
GCN Circular 31434
Subject
GRB 220111A: Fermi GBM Final Real-time Localization
Date
2022-01-11T19:32:17Z (3 years ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
The Fermi GBM team reports the detection of a likely LONG GRB
At 19:21:49 UT on 11 Jan 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220111A (trigger 663621714.433092 / 220111807).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 149.1, Dec = 0.5 (J2000 degrees, equivalent to J2000 09h 56m, 0d 30'), with a statistical uncertainty of 1.6 degrees.
The angle from the Fermi LAT boresight is 70.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220111807/quicklook/glg_skymap_all_bn220111807.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220111807/quicklook/glg_healpix_all_bn220111807.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220111807/quicklook/glg_lc_medres34_bn220111807.gif
GCN Circular 31435
Subject
GRB 220111A: BALROG localization (Fermi Trigger 663621714 / GRB 220111807)
Date
2022-01-11T19:47:26Z (3 years ago)
From
Jochen Greiner at MPE,Garching <jcg@mpe.mpg.de>
B. Biltzinger, F. Kunzweiler, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
663621714 at 19:21:49 on 11 Jan. 2022 were automatically fitted for spectrum
and sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427;
Berlato et al. 2019, ApJ 873, 60).
The best-fit position (1 sigma statistical errors) is:
RA(2000.0) = 149.9+/-0.9 deg
Decl.(2000.0) = 0.6+/-0.8 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB220111807/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB220111807/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB220111807/json
GCN Circular 31437
Subject
Fermi GRB 220111A: Global MASTER-Net observations report
Date
2022-01-12T00:30:53Z (3 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, 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. 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),
B.L.Carrasco, J.R.Valdes,V.Chavushyan, C.J.Martinez, V.M.Patino Alvarez,
M.L.H.Rodriguez (INAOE, OAGH)
A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),
A. Gabovich, V.Yurkov
(Blagoveschensk Educational State University)
MASTER-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the Fermi GRB 220111A ( Fermi GBM team, GCN 31434) errorbox 8157 sec after notice time and 8188 sec after trigger time at 2022-01-11 21:38:18 UT, with upper limit up to 17.2 mag. Observations started at twilight. The observations began at zenith distance = 68 deg. The sun altitude is -16.6 deg.
MASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 220111A errorbox 8419 sec after notice time and 8450 sec after trigger time at 2022-01-11 21:42:40 UT, with upper limit up to 19.5 mag. The observations began at zenith distance = 58 deg. The sun altitude is -34.1 deg.
MASTER-IAC robotic telescope located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB 220111A errorbox 10681 sec after notice time and 10712 sec after trigger time at 2022-01-11 22:20:21 UT, with upper limit up to 18.2 mag. The observations began at zenith distance = 77 deg. The sun altitude is -51.0 deg.
The galactic latitude b = 41 deg., longitude l = 239 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1846225
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
8279 | 2022-01-11 21:38:18 | MASTER-Amur | (09h 53m 32.49s , -00d 00m 52.5s) | C | 180 | 16.4 |
8481 | 2022-01-11 21:42:40 | MASTER-SAAO | (09h 48m 52.42s , +01d 12m 00.1s) | C | 60 | 18.6 |
8563 | 2022-01-11 21:43:02 | MASTER-Amur | (09h 53m 30.03s , -00d 00m 04.8s) | C | 180 | 17.1 |
8763 | 2022-01-11 21:46:22 | MASTER-Amur | (09h 53m 31.26s , +00d 00m 53.1s) | C | 180 | 17.3 |
8767 | 2022-01-11 21:46:26 | MASTER-SAAO | (09h 56m 28.94s , +02d 27m 35.1s) | C | 180 | 17.1 |
8963 | 2022-01-11 21:49:42 | MASTER-Amur | (09h 53m 36.46s , -00d 00m 06.9s) | C | 180 | 17.0 |
8966 | 2022-01-11 21:49:45 | MASTER-SAAO | (09h 56m 22.78s , +02d 27m 02.4s) | C | 180 | 19.5 |
9164 | 2022-01-11 21:53:03 | MASTER-Amur | (09h 53m 29.67s , -00d 01m 05.9s) | C | 180 | 17.0 |
9368 | 2022-01-11 21:56:27 | MASTER-Amur | (09h 53m 37.02s , +01d 59m 20.1s) | C | 180 | 17.1 |
9568 | 2022-01-11 21:59:47 | MASTER-Amur | (09h 53m 34.21s , +02d 00m 44.2s) | C | 180 | 17.0 |
10364 | 2022-01-11 22:13:03 | MASTER-SAAO | (09h 56m 28.48s , -01d 27m 25.6s) | C | 180 | 19.3 |
10563 | 2022-01-11 22:16:22 | MASTER-SAAO | (09h 56m 23.23s , -01d 28m 07.0s) | C | 180 | 19.4 |
10742 | 2022-01-11 22:20:21 | MASTER-IAC | (09h 47m 50.16s , +03d 15m 32.2s) | C | 60 | 17.5 |
10983 | 2022-01-11 22:24:22 | MASTER-IAC | (09h 47m 01.57s , -00d 33m 12.3s) | C | 60 | 17.5 |
11673 | 2022-01-11 22:35:52 | MASTER-IAC | (09h 47m 50.89s , +03d 14m 48.9s) | C | 60 | 17.7 |
11713 | 2022-01-11 22:36:32 | MASTER-SAAO | (09h 57m 06.07s , +01d 11m 39.8s) | C | 60 | 18.6 |
11793 | 2022-01-11 22:37:52 | MASTER-SAAO | (09h 48m 56.51s , +01d 11m 08.5s) | C | 60 | 18.9 |
11873 | 2022-01-11 22:39:12 | MASTER-SAAO | (10h 04m 22.09s , +01d 11m 23.2s) | C | 60 | 18.4 |
11913 | 2022-01-11 22:39:52 | MASTER-IAC | (09h 46m 59.27s , -00d 32m 18.3s) | C | 60 | 17.6 |
12115 | 2022-01-11 22:43:14 | MASTER-SAAO | (10h 04m 07.82s , -00d 43m 26.4s) | C | 60 | 18.6 |
12419 | 2022-01-11 22:48:18 | MASTER-IAC | (09h 47m 01.59s , +01d 19m 46.5s) | C | 60 | 17.7 |
12419 | 2022-01-11 22:48:18 | MASTER-IAC | (09h 55m 13.34s , +01d 14m 53.2s) | C | 60 | 14.9 |
12579 | 2022-01-11 22:50:57 | MASTER-IAC | (09h 47m 47.15s , +03d 15m 10.4s) | C | 60 | 17.9 |
12579 | 2022-01-11 22:50:57 | MASTER-IAC | (09h 55m 59.33s , +03d 10m 20.0s) | C | 60 | 16.5 |
12772 | 2022-01-11 22:54:11 | MASTER-SAAO | (09h 56m 57.71s , +01d 11m 24.8s) | C | 60 | 18.8 |
12818 | 2022-01-11 22:54:57 | MASTER-IAC | (09h 46m 56.27s , -00d 33m 22.0s) | C | 60 | 17.8 |
12819 | 2022-01-11 22:54:57 | MASTER-IAC | (09h 55m 07.86s , -00d 38m 15.8s) | C | 60 | 15.6 |
12851 | 2022-01-11 22:55:30 | MASTER-SAAO | (09h 48m 56.76s , +01d 12m 20.3s) | C | 60 | 18.6 |
12931 | 2022-01-11 22:56:50 | MASTER-SAAO | (10h 04m 15.14s , +01d 11m 32.2s) | C | 60 | 18.4 |
12979 | 2022-01-11 22:57:38 | MASTER-IAC | (09h 55m 49.49s , -02d 32m 16.4s) | C | 60 | 14.7 |
13326 | 2022-01-11 23:03:25 | MASTER-IAC | (09h 47m 03.78s , +01d 20m 07.8s) | C | 60 | 17.8 |
13326 | 2022-01-11 23:03:25 | MASTER-IAC | (09h 55m 15.26s , +01d 15m 17.6s) | C | 60 | 16.7 |
13989 | 2022-01-11 23:14:28 | MASTER-IAC | (10h 03m 00.58s , +03d 14m 15.3s) | C | 60 | 18.2 |
14257 | 2022-01-11 23:18:56 | MASTER-IAC | (09h 47m 01.59s , +01d 21m 41.4s) | C | 60 | 18.0 |
14257 | 2022-01-11 23:18:56 | MASTER-IAC | (09h 55m 13.11s , +01d 16m 53.9s) | C | 60 | 17.4 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 31440
Subject
GRB 220111A: AstroSat CZTI detection
Date
2022-01-12T07:34:03Z (3 years ago)
From
Gaurav Waratkar at IIT,Bombay <gauravwaratkar@iitb.ac.in>
V. Prasad (IUCAA), G. Waratkar (IITB), A. Vibhute (IUCAA), V. Bhalerao
(IITB), D. Bhattacharya (IUCAA), A. R. Rao (IUCAA/TIFR), and S. Vadawale
(PRL) report on behalf of the AstroSat CZTI collaboration:
Analysis of AstroSat CZTI data, with the ML pipeline (Abraham et al.,
2021, MNRAS, 504, 3084) and the CIFT framework (Sharma et al., 2021,
JApA, 42, 73), showed detection of a long GRB 220111A, which was also
detected by Fermi-GBM (GCN 31434), with localization reported by BALROG
(Biltzinger et al., GCN 31435).
The source was clearly detected in the 20-200 keV energy range. The
light curve peaks at 2022-01-11 19:21:52.75 UT. The measured peak count
rate associated with the burst is 1028 (+208, -77) cts/s above the
background in the combined data of four quadrants, with a total of 3672
(+250, -232) cts. The local mean background count rate was 471 (+4, -7)
cts/s. Using cumulative rates, we measure a T90 of 10 (+1, -1) s.
It was also clearly detected in the CsI anticoincidence (Veto) detector
in the 100-500 keV energy range. The light curve peaks at 2022-01-11
19:21:51.95 UT. The measured peak count rate is 509 (+72, -80) cts/s
above the background in the combined Veto data of four quadrants, with a
total of 1900 (+429, -475) cts. The local mean background count rate was
1580 (+5, -5) cts/s. We measure a T90 of 5 (+6, -2) 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.