GRB 200629A
GCN Circular 28039
Subject
GRB 200629A: BALROG localization (Fermi Trigger 615127794 / GRB 200629535)
Date
2020-06-29T16:41:06Z (5 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
615127794 at 12:49:49 on 29 June 2020 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) = 339.4+/-3.0 deg
Decl.(2000.0) = -64.8+/-1.0 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB200629535/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB200629535/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB200629535/json
GCN Circular 28040
Subject
GRB 200629A: Fermi GBM Final Real-time Localization
Date
2020-06-29T17:45:09Z (5 years ago)
From
Peter Veres at UAH <veresp@gmail.com>
The Fermi GBM team reports the detection of a likely LONG GRB.
At 12:49:49.29 UT on 29 Jun 2020, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 200629A (trigger 615127794 / 200629535). The
on-ground calculated location, using the Fermi GBM trigger data, is RA =
338.46, Dec = -65.59 (J2000 degrees, equivalent to J2000 22h 34m, -65d
35'), with a statistical uncertainty of 1.8 degrees. On-ground localization
was delayed by a network outage.
The angle from the Fermi LAT boresight is 71.0 degrees.
The skymap can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200629535/quicklook/glg_skymap_all_bn200629535.png
The HEALPix FITS file, including the estimated localization systematic, can
be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200629535/quicklook/glg_healpix_all_bn200629535.fit
The GBM light curve can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200629535/quicklook/glg_lc_medres34_bn200629535.gif
GCN Circular 28041
Subject
Fermi GRB 200629A: Global MASTER-Net observations report
Date
2020-06-29T18:15:23Z (5 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),
H.Levato
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),
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-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 200629A ( Fermi GBM team, GCN 28040) errorbox 13771 sec after notice time and 13907 sec after trigger time at 2020-06-29 16:41:36 UT, with upper limit up to 18.0 mag. Observations started at twilight. The observations began at zenith distance = 80 deg. The sun altitude is -11.9 deg.
The galactic latitude b = -46 deg., longitude l = 322 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1392622
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
13998 | 2020-06-29 16:41:36 | MASTER-SAAO | (22h 29m 03.34s , -64d 53m 38.3s) | C | 180 | 17.5 |
13998 | 2020-06-29 16:41:36 | MASTER-SAAO | (22h 45m 05.94s , -64d 52m 58.7s) | C | 180 | 17.4 |
14197 | 2020-06-29 16:44:56 | MASTER-SAAO | (22h 29m 02.68s , -64d 52m 33.6s) | C | 180 | 17.9 |
14197 | 2020-06-29 16:44:56 | MASTER-SAAO | (22h 45m 04.79s , -64d 51m 54.2s) | C | 180 | 17.6 |
14396 | 2020-06-29 16:48:15 | MASTER-SAAO | (22h 29m 08.28s , -64d 53m 30.0s) | C | 180 | 18.0 |
14396 | 2020-06-29 16:48:15 | MASTER-SAAO | (22h 45m 11.10s , -64d 52m 51.9s) | C | 180 | 17.7 |
14596 | 2020-06-29 16:51:35 | MASTER-SAAO | (22h 29m 00.76s , -64d 54m 27.9s) | C | 180 | 17.8 |
14596 | 2020-06-29 16:51:35 | MASTER-SAAO | (22h 45m 04.15s , -64d 53m 49.3s) | C | 180 | 17.4 |
15055 | 2020-06-29 17:00:13 | MASTER-SAAO | (22h 12m 29.44s , -68d 03m 48.9s) | C | 60 | 17.7 |
15788 | 2020-06-29 17:12:26 | MASTER-SAAO | (22h 12m 34.13s , -68d 04m 47.0s) | C | 60 | 17.8 |
16206 | 2020-06-29 17:18:25 | MASTER-SAAO | (22h 25m 05.83s , -65d 40m 42.3s) | C | 180 | 17.7 |
16206 | 2020-06-29 17:18:25 | MASTER-SAAO | (22h 41m 39.01s , -65d 40m 04.3s) | C | 180 | 17.3 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 28045
Subject
GRB 200629A: AstroSat CZTI detection
Date
2020-06-30T17:34:42Z (5 years ago)
From
Soumya Gupta at IUCAA/ASTROSAT <soumya@iucaa>
S. Gupta, V. Sharma 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 the detection of a long GRB 200629A, which was also detected by BALROG (Biltzinger B. et al., GCN #28039), Fermi GBM (GCN #28040) and Global MASTER-Net (Lipunov V. et al., GCN # 28041).
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 2020-06-29 12:49:53.599 UT. The measured peak count rate associated with the burst is 337 +/- 28 cts/s above the background in the combined data of four quadrants, with a total of 3117 +/- 32 cts. The local mean background count rate was 486 +/- 1 cts/s. Using cumulative rates, we measure a T90 of 27.14 +/- 0.12 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 2020-06-29 12:49:52.574 UT. The measured peak count rate is 310 +/- 33 cts/s above the background in the combined Veto data of four quadrants, with a total of 2105 +/- 42 cts. The local mean background count rate was 1414 +/- 1 cts/s. We measure a T90 of 21.01 +/- 0.20 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.