GRB 211019A
GCN Circular 30941
Subject
GRB 211019A: Fermi GBM Final Real-time Localization
Date
2021-10-19T06:09:47Z (4 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 05:59:31 UT on 19 Oct 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 211019A (trigger 656315976.19434 / 211019250).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 109.2, Dec = -37.8 (J2000 degrees, equivalent to J2000 07h 16m, -37d 47'), with a statistical uncertainty of 1.0 degrees.
The angle from the Fermi LAT boresight is 64.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211019250/quicklook/glg_skymap_all_bn211019250.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/bn211019250/quicklook/glg_healpix_all_bn211019250.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211019250/quicklook/glg_lc_medres34_bn211019250.gif
GCN Circular 30942
Subject
GRB 211019A: BALROG localization (Fermi Trigger 656315976 / GRB 211019250)
Date
2021-10-19T06:34:50Z (4 years ago)
From
Jochen Greiner at MPE,Garching <jcg@mpe.mpg.de>
F. Kunzweiler, B. Biltzinger, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
656315976 at 05:59:31 on 19 Oct. 2021 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) = 107.1+/-0.7 deg
Decl.(2000.0) = -38.6+/-0.7 deg
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB211019250/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB211019250/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB211019250/json
GCN Circular 30944
Subject
Fermi GRB 211019A: Global MASTER-Net observations report
Date
2021-10-19T11:00:22Z (4 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
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-IAC robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB 211019A ( Fermi GBM team, GCN 30941) errorbox 91 sec after notice time and 130 sec after trigger time at 2021-10-19 06:01:42 UT, with upper limit up to 17.3 mag. Observations started at twilight. The observations began at zenith distance = 66 deg. The sun altitude is -14.8 deg.
MASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 211019A errorbox 10590 sec after notice time and 10629 sec after trigger time at 2021-10-19 08:56:41 UT, with upper limit up to 17.6 mag. Observations started at twilight. The observations began at zenith distance = 14 deg. The sun altitude is -12.1 deg.
The galactic latitude b = -12 deg., longitude l = 251 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1756842
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
146 | 2021-10-19 06:01:42 | MASTER-IAC | (07h 17m 09.18s , -37d 56m 16.1s) | P| | 30 | 13.8 |
186 | 2021-10-19 06:01:42 | MASTER-IAC | (07h 17m 09.18s , -37d 56m 16.1s) | P| | 110 | 14.7 | Coadd
146 | 2021-10-19 06:01:42 | MASTER-IAC | (07h 16m 10.91s , -37d 50m 38.7s) | P- | 30 | 13.5 |
186 | 2021-10-19 06:01:42 | MASTER-IAC | (07h 16m 10.91s , -37d 50m 38.7s) | P- | 110 | 14.6 | Coadd
197 | 2021-10-19 06:02:33 | MASTER-IAC | (07h 17m 04.65s , -37d 56m 56.7s) | P| | 30 | 13.9 |
197 | 2021-10-19 06:02:33 | MASTER-IAC | (07h 16m 06.36s , -37d 51m 18.8s) | P- | 30 | 13.9 |
257 | 2021-10-19 06:03:23 | MASTER-IAC | (07h 17m 04.32s , -37d 55m 58.0s) | P| | 50 | 14.5 |
257 | 2021-10-19 06:03:23 | MASTER-IAC | (07h 16m 06.03s , -37d 50m 20.6s) | P- | 50 | 14.4 |
334 | 2021-10-19 06:04:34 | MASTER-IAC | (07h 17m 09.19s , -37d 56m 59.7s) | P| | 60 | 16.0 |
424 | 2021-10-19 06:04:34 | MASTER-IAC | (07h 17m 09.20s , -37d 56m 59.7s) | P| | 240 | 17.3 | Coadd
334 | 2021-10-19 06:04:34 | MASTER-IAC | (07h 16m 10.90s , -37d 51m 23.7s) | P- | 60 | 15.7 |
424 | 2021-10-19 06:04:34 | MASTER-IAC | (07h 16m 10.90s , -37d 51m 23.7s) | P- | 240 | 17.1 | Coadd
424 | 2021-10-19 06:05:55 | MASTER-IAC | (07h 17m 04.40s , -37d 58m 01.9s) | P| | 80 | 16.6 |
424 | 2021-10-19 06:05:55 | MASTER-IAC | (07h 16m 06.17s , -37d 52m 25.3s) | P- | 80 | 16.4 |
535 | 2021-10-19 06:07:35 | MASTER-IAC | (07h 17m 10.22s , -37d 58m 01.5s) | P| | 100 | 17.1 |
535 | 2021-10-19 06:07:35 | MASTER-IAC | (07h 16m 12.08s , -37d 52m 25.3s) | P- | 100 | 16.9 |
665 | 2021-10-19 06:09:36 | MASTER-IAC | (07h 17m 07.05s , -37d 56m 23.7s) | P| | 120 | 17.3 |
665 | 2021-10-19 06:09:36 | MASTER-IAC | (07h 16m 08.99s , -37d 50m 47.4s) | P- | 120 | 17.1 |
10660 | 2021-10-19 08:56:41 | MASTER-OAFA | (07h 10m 41.71s , -39d 22m 20.0s) | C | 60 | 17.6 |
10903 | 2021-10-19 09:00:43 | MASTER-OAFA | (07h 08m 39.36s , -37d 27m 29.3s) | C | 60 | 17.5 |
10983 | 2021-10-19 09:02:04 | MASTER-OAFA | (07h 18m 38.70s , -37d 26m 09.7s) | C | 60 | 17.3 |
11381 | 2021-10-19 09:08:42 | MASTER-OAFA | (07h 12m 16.15s , -41d 14m 31.8s) | C | 60 | 16.7 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 30946
Subject
GRB 211019A: Detection by GRBAlpha
Date
2021-10-19T15:11:53Z (4 years ago)
From
Masanori Ohno at Hiroshima U <ohno@astro.hiroshima-u.ac.jp>
J. Ripa (Masaryk U.), M. Ohno (Eotvos U./Konkoly Observatory/Hiroshima
U.), H. Takahashi (Hiroshima U.), A. Pal, L. Meszaros, B. Csak (Konkoly
Observatory), N. Werner, M. Topinka, F. Munz, F. Hroch (Masaryk U.), T.
Urbanec, M. Kasal, A. Povalac (Brno U. of Technology), J. Hudec, J. Kapus,
M. Frajt (Spacemanic s.r.o), R. Laszlo, M. Koleda (Needronix s.r.o), M.
Smelko, P. Hanak, P. Lipovsky (Technical U. of Kosice), G. Galgoczi (Wigner
Research Center/Eotvos U.), Yuusuke Uchida, Helen Poon, H. Matake, N.
Uchida (Hiroshima U.), T. Bozoki (Eotvos U.), G. Dalya (Eotvos U.), T.
Enoto (Kyoto U.), Zs. Frei (Eotvos U.), G. Friss (Eotvos U.), Y. Fukazawa,
K. Hirose (Hiroshima U.), S. Hisadomi (Nagoya U.), Y. Ichinohe (Rikkyo U.),
K. Kapas (Eotvos U.), L. L. Kiss (Konkoly Observatory), T. Mizuno
(Hiroshima U.), K. Nakazawa (Nagoya U.), H. Odaka (Univ of Tokyo), J.
Takatsy (Eotvos U.), K. Torigoe (Hiroshima U.) -- the GRBAlpha
collaboration.
The bright/long duration GRB 211019A (Fermi-GBM detection; GCN Circ.
30941, BALROG localization; Kunzweiler et al., GCN 30942) was detected by
the GRBAlpha 1U CubeSat (Pal et al. Proc. SPIE 2020).
The light curve shows a strong FRED-like structure with the duration of
about 40 s (T90 = 36 s). At 05:59:34 UTC, our detection reached a peak SNR
~ 39.
The light curve obtained by GRBAlpha is available here:
https://grbalpha.konkoly.hu/static/share/GRB211019A_GCN.pdf
GRBAlpha is a demonstration mission for a future CubeSats constellation
(Werner et al. Proc. SPIE 2018). The detector of GRBAlpha consists of a 75
x 75 x 5 mm3 CsI scintillator read out by a SiPM array, covering the energy
range from ~50 keV to ~1000 keV. GRBAlpha was launched on 2021 March 22
from Baikonur. After its commissioning phase, the scientific observations
are now under way. To increase the duty cycle and the downlink rate, the
upgrade of the on-board data acquisition software stack is in progress. The
ground segment is also supported by the radio amateur community and it
takes advantage of the SatNOGS network for increased data downlink volume.
GCN Circular 30993
Subject
IPN Triangulation of GRB 211019A
Date
2021-10-25T15:02:56Z (4 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, S. Golenetskii, D. Frederiks, A. Ridnaia,
A. Lysenko, 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,
and
W. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr,
on behalf of the GRS-Odyssey GRB team, report:
The bright, long-duration GRB 211019A
(Fermi-GBM detection: The Fermi GBM team, GCN Circ. 30941;
BALROG localization: F. Kunzweiler et al., GCN Circ. 30942;
GRBAlpha detection: J. Ripa et al., GCN Circ. 30946)
was detected by BepiColombo (MGNS; see introductory GCN Circ. 30949),
Mars-Odyssey (HEND), GRBAlpha, Fermi (GBM trigger 656315976),
Konus-Wind, and INTEGRAL (SPI-ACS), at about 21571 s UT (05:59:31).
The burst light curves in the energy range 30 keV-1.5 MeV (HEND) and
250-450 keV (MGNS) exhibit a bright peak with a total duration of ~17 s.
We have triangulated GRB 211019A to the following 3 sigma annuli:
---------------------------------------------------------
R.A.(J2000) Dec.(J2000) R +dR -dR
deg deg deg deg deg
---------------------------------------------------------
MGNS-HEND 27.190 10.927 89.034 +0.021 -0.022
Konus-HEND 200.705 -8.093 87.815 +0.017 -0.017
Konus-GBM 190.965 -7.594 80.456 +0.431 -0.431
---------------------------------------------------------
The MGNS-HEND and Konus-HEND annuli intersect to form two error
boxes one of which is inconsistent with the Konus-GBM annulus,
the KW ecliptic latitude response,
and the Fermi (GBM) RoboBA and BALROG localizations.
The correct preliminary, 3 sigma error box is:
---------------------------------------------
RA(2000), deg Dec(2000), deg
---------------------------------------------
Center:
106.988 (07h 07m 57s) -38.779 (-38d 46' 43")
Corners:
106.975 (07h 07m 54s) -38.728 (-38d 43' 41")
106.898 (07h 07m 36s) -39.122 (-39d 07' 19")
107.002 (07h 08m 01s) -38.819 (-38d 49' 07")
107.079 (07h 08m 19s) -38.424 (-38d 25' 25")
---------------------------------------------
The error box area is 49 sq. arcmin, and its maximum
dimension is 43 arcmin (the minimum one is 2.0 arcmin).
The Sun distance was 89 deg.
This box may be improved.
A triangulation maps are posted at:
http://www.ioffe.ru/LEA/GRBs/GRB211019_T21573/IPN/
and
http://l503.iki.rssi.ru/owncloud/index.php/s/bRzLdux7RLz1tVf