GRB 240730B
GCN Circular 36984
Subject
GRB 240730B: Fermi GBM Final Real-time Localization
Date
2024-07-30T19:48:53Z (10 months 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 19:38:18 UT on 30 Jul 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240730B (trigger 744061103.370314 / 240730818).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 202.2, Dec = 23.2 (J2000 degrees, equivalent to J2000 13h 28m, 23d 11'), with a statistical uncertainty of 1.0 degrees.
The angle from the Fermi LAT boresight is 130.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240730818/quicklook/glg_skymap_all_bn240730818.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/bn240730818/quicklook/glg_healpix_all_bn240730818.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240730818/quicklook/glg_lc_medres34_bn240730818.gif
GCN Circular 36985
Subject
Fermi GRB 240730B: Global MASTER-Net observations report
Date
2024-07-30T20:30:44Z (10 months 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 240730B ( Fermi GBM team, GCN 36984) errorbox 576 sec after notice time and 588 sec after trigger time at 2024-07-30 19:48:06 UT, with upper limit up to 19.2 mag. The observations began at zenith distance = 82 deg. The sun altitude is -48.0 deg.
The galactic latitude b = 80 deg., longitude l = 10 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2546199
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
618 | 2024-07-30 19:48:06 | MASTER-SAAO | (13h 29m 10.06s , +23d 17m 14.3s) | C | 60 | 18.6 |
678 | 2024-07-30 19:48:06 | MASTER-SAAO | (13h 29m 10.06s , +23d 17m 14.4s) | C | 180 | 19.2 | Coadd
697 | 2024-07-30 19:49:25 | MASTER-SAAO | (13h 29m 09.53s , +23d 17m 20.0s) | C | 60 | 18.5 |
776 | 2024-07-30 19:50:44 | MASTER-SAAO | (13h 29m 09.12s , +23d 17m 24.9s) | C | 60 | 18.5 |
855 | 2024-07-30 19:52:03 | MASTER-SAAO | (13h 29m 08.65s , +23d 17m 31.0s) | C | 60 | 18.6 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.