GRB 240625B
GCN Circular 36763
Subject
GRB 240625B: Fermi GBM Final Real-time Localization
Date
2024-06-25T23:09:13Z (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 LONG GRB
At 22:58:35 UT on 25 Jun 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240625B (trigger 741049120.43883 / 240625957).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 90.0, Dec = -11.1 (J2000 degrees, equivalent to J2000 06h 00m, -11d 05'), with a statistical uncertainty of 10.3 degrees.
The angle from the Fermi LAT boresight is 87.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240625957/quicklook/glg_skymap_all_bn240625957.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/bn240625957/quicklook/glg_healpix_all_bn240625957.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240625957/quicklook/glg_lc_medres34_bn240625957.gif
GCN Circular 36765
Subject
Fermi GRB 240625B: Global MASTER-Net observations report
Date
2024-06-26T04:15:49Z (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-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 240625B ( Fermi GBM team, GCN 36763) errorbox 17047 sec after notice time and 17076 sec after trigger time at 2024-06-26 03:43:11 UT, with upper limit up to 18.2 mag. The observations began at zenith distance = 80 deg. The sun altitude is -23.9 deg.
The galactic latitude b = -16 deg., longitude l = 218 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2508418
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
17107 | 2024-06-26 03:43:11 | MASTER-SAAO | (05h 23m 38.92s , -19d 41m 29.1s) | C | 60 | 17.7 |
17265 | 2024-06-26 03:45:50 | MASTER-SAAO | (05h 19m 55.38s , -17d 48m 33.1s) | C | 60 | 17.8 |
17424 | 2024-06-26 03:48:28 | MASTER-SAAO | (05h 16m 41.27s , -15d 55m 48.2s) | C | 60 | 17.8 |
17582 | 2024-06-26 03:51:07 | MASTER-SAAO | (05h 13m 53.84s , -14d 01m 37.5s) | C | 60 | 17.8 |
17741 | 2024-06-26 03:53:46 | MASTER-SAAO | (05h 11m 24.01s , -12d 06m 09.2s) | C | 60 | 17.7 |
17902 | 2024-06-26 03:56:27 | MASTER-SAAO | (05h 31m 21.76s , -19d 42m 51.8s) | C | 60 | 17.7 |
18060 | 2024-06-26 03:59:05 | MASTER-SAAO | (05h 23m 43.61s , -19d 41m 39.5s) | C | 60 | 18.0 |
18302 | 2024-06-26 04:03:07 | MASTER-SAAO | (05h 20m 03.20s , -17d 48m 39.0s) | C | 60 | 18.2 |
18461 | 2024-06-26 04:05:46 | MASTER-SAAO | (05h 16m 48.76s , -15d 55m 23.6s) | C | 60 | 18.1 |
18620 | 2024-06-26 04:08:25 | MASTER-SAAO | (05h 13m 54.54s , -14d 01m 43.8s) | C | 60 | 18.1 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.