GRB 211219A
GCN Circular 31265
Subject
GRB 211219A: Fermi GBM Final Real-time Localization
Date
2021-12-19T15:05:53Z (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 14:55:22 UT on 19 Dec 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 211219A (trigger 661618527.567338 / 211219622).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 60.5, Dec = -30.5 (J2000 degrees, equivalent to J2000 04h 01m, -30d 30'), with a statistical uncertainty of 3.3 degrees.
The angle from the Fermi LAT boresight is 100.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211219622/quicklook/glg_skymap_all_bn211219622.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211219622/quicklook/glg_healpix_all_bn211219622.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211219622/quicklook/glg_lc_medres34_bn211219622.gif
GCN Circular 31266
Subject
Fermi GRB 211219A: Global MASTER-Net observations report
Date
2021-12-19T16:45:16Z (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),
A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),
A. Gabovich, V.Yurkov
(Blagoveschensk Educational State University)
MASTER-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 211219A ( Fermi GBM team, GCN 31265) errorbox 4877 sec after notice time and 4903 sec after trigger time at 2021-12-19 16:17:06 UT, with upper limit up to 14.3 mag. The observations began at zenith distance = 80 deg. The sun altitude is -28.1 deg.
The galactic latitude b = -48 deg., longitude l = 229 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1819804
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
4934 | 2021-12-19 16:17:06 | MASTER-Kislovodsk | (03h 58m 29.45s , -25d 40m 02.5s) | C | 60 | 14.2 |
5913 | 2021-12-19 16:33:25 | MASTER-Kislovodsk | (03h 58m 23.82s , -25d 41m 23.6s) | C | 60 | 14.3 |
6073 | 2021-12-19 16:36:05 | MASTER-Kislovodsk | (03h 45m 18.21s , -27d 33m 24.6s) | C | 60 | 13.0 |
6314 | 2021-12-19 16:40:06 | MASTER-Kislovodsk | (04h 02m 20.29s , -27d 34m 30.9s) | C | 60 | 12.3 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 31269
Subject
GRB 211219A: Swift/BAT-GUANO detection outside the coded FOV
Date
2021-12-20T15:25:02Z (3 years ago)
From
Aaron Tohuvavohu at U Toronto <aaron.tohu@gmail.com>
Aaron Tohuvavohu (U Toronto), James DeLaunay (UAlabama), Gayathri
Raman (PSU), Jamie A. Kennea (PSU), report:
Swift/BAT did not localize GRB 211219A (T0: 2021-12-19T14:55:22 UTC,
Fermi/GBM GCN 31265, INTEGRAL/SPI-ACS trig #9569).
The Fermi and INTEGRAL notices, distributed in near real-time,
triggered the Swift Mission Operations Center operated Gamma-ray
Urgent Archiver for Novel Opportunities (GUANO; Tohuvavohu et al.
2020, ApJ, 900, 1).
Upon trigger by this notice, GUANO sent a command to the Swift Burst
Alert Telescope (BAT) to save 200 seconds of BAT event-mode data from
[-50,+150] seconds around the time of the burst. All the requested
event mode data was delivered to the ground.
The BAT likelihood search, NITRATES (DeLaunay + Tohuvavohu,
arXiv:2111.01769), detects the burst with a sqrt(TS) of 11.8 in a
4.096 s analysis time bin.
NITRATES results are consistent with a burst coming from outside the
coded FOV, with DeltaLLHOut of 5.5.
An out of FOV origin is consistent with the Fermi/GBM localization.
See Section 9.1 and Figure 20 in the NITRATES paper for brief
descriptions and interpretation of sqrt(TS), DeltaLLHPeak, and
DeltaLLHOut.
GUANO is a fully autonomous, extremely low latency, spacecraft
commanding pipeline designed for targeted recovery of BAT event mode
data around the times of compelling astrophysical events to enable
more sensitive GRB searches.
A live reporting of Swift/BAT event data recovered by GUANO can be
found at: https://www.swift.psu.edu/guano/
GCN Circular 31270
Subject
GRB 211219A: AGILE detection
Date
2021-12-20T17:27:59Z (3 years ago)
From
Alessandro Ursi at INAF/IAPS <alessandro.ursi@gmail.com>
A. Ursi (INAF/IAPS), F. Lucarelli, C. Pittori, F. Verrecchia (SSDC, and
INAF/OAR), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), A. Argan, M.
Cardillo, C. Casentini, Y. Evangelista, L. Foffano, E. Menegoni, G. Piano
(INAF/IAPS), 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), F. Longo (Univ.
Trieste and INFN Trieste), A. Giuliani (INAF/IASF-Mi), report on behalf of
the AGILE Team:
The AGILE satellite detected the long GRB 211219A at T0 = 2021-12-19
14:55:22 (UTC), reported by Fermi GBM (GCN #31265).
The burst is clearly visible in the AGILE scientific ratemeters of the
MiniCALorimeter (MCAL; 0.4-100 MeV) and AntiCoincidence (AC; 50-200 keV)
detectors. The event lasted about 6.0 s and it released a total number of
7115 counts in the MCAL detector (above a background rate of 1240 Hz), and
18620 counts in the AC detector (above a background rate of 3450 Hz). The
AGILE ratemeter light curves can be found at
http://www.agilescienceapp.it/notices/GRB211219A_AGILE_RM.png . At the T0,
the event was about 63�� off-axis.
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 31283
Subject
GRB 211219A: AstroSat CZTI detection
Date
2021-12-23T03:06:33Z (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 CIFT framework (Sharma et al.,
2021, JApA, 42, 73) showed detection of a long GRB 211219A which was
also detected by Fermi (GCN 31265), MASTER-Net (Lipunov et al. GCN
31268), Swift/BAT-GUANO (Tohuvavohu et al., GCN 31269) and AGILE (Ursi
et al., GCN 31270).
The source was clearly detected in the 20-200 keV energy range. The
light curve showed multiple peaks of emission with the strongest peak at
2021-12-19 14:55:22.50 UT. The measured peak count rate associated with
the burst is 178 (+42, -26) cts/s above the background in the combined
data of two quadrants, with a total of 912 (+201, -218) cts. The local
mean background count rate was 382 (+2, -3) cts/s. Using cumulative
rates, we measure a T90 of 15 (+3, -8) s.
It was also clearly detected in the CsI anticoincidence (Veto) detector
in the 100-500 keV energy range. The light curve peaks at 2021-12-19
14:55:23.063 UT. The measured peak count rate is 740 (+72, -70) cts/s
above the background in the combined Veto data of four quadrants, with a
total of 3100 (+285, -308) cts. The local mean background count rate was
1243 (+4, -5) cts/s. We measure a T90 of 11.0 (+0.3, -5.2) 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 [1]. 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.
Links:
------
[1] http://astrosat.iucaa.in/czti/?q=grb
GCN Circular 31346
Subject
IPN triangulation of GRB 211219A
Date
2021-12-31T15:44:38Z (3 years ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin
on behalf of the MGNS/BepiColombo and HEND/Mars Odyssey teams,
J. Benkhoff on behalf of the BepiColombo team,
K. Hurley on behalf of the IPN,
D. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko, and
T. Cline on behalf of the Konus-Wind 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. Goldstein, M. S. Briggs, and C. Wilson-Hodge
on behalf of the Fermi GBM team,
S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu
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:
A long-duration GRB 211219A
(Fermi-GBM detection: Fermi GBM Team, GCN Circ. 31265;
Swift/BAT-GUANO detection: Tohuvavohu et al., GCN Circ. 31269;
AGILE-MCAL detection: Ursi et al., GCN Circ. 31270;
AstroSat-CZTI detection: Prasad et al., GCN Circ. 31283)
was detected by Fermi (GBM trigger 661618527), Swift (BAT),
AGILE (MCAL), AstroSat (CZTI), Konus-Wind, INTEGRAL (SPI-ACS),
Mars-Odyssey (HEND) and BepiColombo (MGNS) at
about 53722 s UT (14:55:22).
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:
58.652 (03h 54m 37s) -34.619 (-34d 37' 09")
Corners:
59.468 (03h 57m 52s) -34.736 (-34d 44' 11")
57.992 (03h 51m 58s) -34.656 (-34d 39' 23")
57.835 (03h 51m 20s) -34.491 (-34d 29' 27")
59.309 (03h 57m 14s) -34.575 (-34d 34' 30")
---------------------------------------------
The error box area is 676 sq. arcmin, and its maximum
dimension is 1.37 deg (the minimum one is 6 arcmin).
The Sun distance was 115 deg.
This box may be improved.
The IPN localization is consistent with, but reduces the area of,
the Fermi final position.
A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB211219_T53724/IPN