GRB 240702A
GCN Circular 36802
Subject
GRB 240702A: Fermi GBM Final Real-time Localization
Date
2024-07-02T21:25:42Z (a year ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
Via
email
The Fermi GBM team reports the detection of a likely SHORT GRB
At 21:14:50 UT on 2 Jul 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240702A (trigger 741647695.826936 / 240702885).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 334.5, Dec = 14.9 (J2000 degrees, equivalent to J2000 22h 18m, 14d 54'), with a statistical uncertainty of 18.0 degrees.
The angle from the Fermi LAT boresight is 61.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240702885/quicklook/glg_skymap_all_bn240702885.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240702885/quicklook/glg_healpix_all_bn240702885.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240702885/quicklook/glg_lc_medres34_bn240702885.gif
GCN Circular 36803
Subject
Fermi GRB 240702A: Global MASTER-Net observations report
Date
2024-07-02T21:30:44Z (a year ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
legacy email
V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko,
G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij
(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. Gress, N.M. Budnev, O.Ershova
(Irkutsk State University, API),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,
A.R.Corella, L.H.Rodriguez
(INAOE, Guillermo Haro Astrophysics Observatory),
A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),
V. Yurkov, A. Gabovich
(Blagoveschensk Educational State University)
MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 240702A ( Fermi GBM team, GCN 36802) errorbox 95 sec after notice time and 127 sec after trigger time at 2024-07-02 21:16:58 UT, with upper limit up to 19.6 mag. The observations began at zenith distance = 61 deg. The sun altitude is -22.7 deg.
MASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 240702A errorbox 229 sec after notice time and 261 sec after trigger time at 2024-07-02 21:19:12 UT, with upper limit up to 18.6 mag. The observations began at zenith distance = 78 deg. The sun altitude is -69.4 deg.
The galactic latitude b = -34 deg., longitude l = 77 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2517761
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
143 | 2024-07-02 21:16:58 | MASTER-Tavrida | (22h 17m 36.31s , +10d 29m 35.2s) | C | 30 | 17.3 |
143 | 2024-07-02 21:16:58 | MASTER-Tavrida | (22h 17m 30.89s , +10d 34m 15.8s) | C | 30 | 16.6 |
186 | 2024-07-02 21:17:41 | MASTER-Tavrida | (22h 17m 42.39s , +10d 28m 32.8s) | C | 30 | 17.3 |
186 | 2024-07-02 21:17:42 | MASTER-Tavrida | (22h 17m 37.01s , +10d 33m 13.7s) | C | 30 | 16.7 |
232 | 2024-07-02 21:18:22 | MASTER-Tavrida | (22h 17m 35.53s , +10d 27m 30.5s) | C | 40 | 17.4 |
232 | 2024-07-02 21:18:23 | MASTER-Tavrida | (22h 17m 30.18s , +10d 32m 11.2s) | C | 40 | 17.0 |
292 | 2024-07-02 21:19:12 | MASTER-SAAO | (22h 14m 58.07s , +04d 53m 32.0s) | C | 60 | 17.5 |
289 | 2024-07-02 21:19:14 | MASTER-Tavrida | (22h 17m 40.91s , +10d 27m 30.2s) | C | 50 | 17.4 |
289 | 2024-07-02 21:19:14 | MASTER-Tavrida | (22h 17m 35.58s , +10d 32m 11.1s) | C | 50 | 17.0 |
360 | 2024-07-02 21:20:15 | MASTER-Tavrida | (22h 17m 38.36s , +10d 28m 57.5s) | C | 70 | 17.7 |
360 | 2024-07-02 21:20:15 | MASTER-Tavrida | (22h 17m 33.08s , +10d 33m 38.0s) | C | 70 | 17.1 |
371 | 2024-07-02 21:20:31 | MASTER-SAAO | (22h 25m 25.30s , +01d 05m 23.1s) | C | 60 | 18.4 |
504 | 2024-07-02 21:21:44 | MASTER-Tavrida | (22h 27m 15.40s , +34d 44m 40.1s) | C | 180 | 19.6 |
504 | 2024-07-02 21:21:44 | MASTER-Tavrida | (22h 27m 10.97s , +34d 49m 11.3s) | C | 180 | 19.5 |
450 | 2024-07-02 21:21:51 | MASTER-SAAO | (22h 22m 56.02s , +04d 52m 39.8s) | C | 60 | 17.6 |
530 | 2024-07-02 21:23:10 | MASTER-SAAO | (22h 33m 18.91s , +01d 05m 39.9s) | C | 60 | 18.6 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 36804
Subject
GRB 240702A: BALROG localization (Fermi Trigger / GRB 240702885)
Date
2024-07-02T21:48:32Z (a year ago)
From
Jochen Greiner at MPE <jcgrog@mpe.mpg.de>
Via
email
T. Preis, B. Biltzinger, J. Burgess & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
at 21:14:50 on 02 July 2024 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 is:
RA(2000.0) = 331.9 deg
Decl.(2000.0) = 13.1 deg
The 1 sigma statistical error radius is 5.1 deg.
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB240702885/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB240702885/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB240702885/json