GRB 220724A
GCN Circular 32423
Subject
GRB 220724A: Fermi GBM Final Real-time Localization
Date
2022-07-24T23:53:28Z (3 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 23:43:03 UT on 24 Jul 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220724A (trigger 680398988.456506 / 220724988).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 238.5, Dec = -19.2 (J2000 degrees, equivalent to J2000 15h 54m, -19d 11'), with a statistical uncertainty of 8.0 degrees.
The angle from the Fermi LAT boresight is 86.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220724988/quicklook/glg_skymap_all_bn220724988.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220724988/quicklook/glg_healpix_all_bn220724988.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220724988/quicklook/glg_lc_medres34_bn220724988.gif
GCN Circular 32424
Subject
Fermi GRB 220724A: Global MASTER-Net observations report
Date
2022-07-25T05:30:21Z (3 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,
G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin
(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
(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),
A. Gabovich, V.Yurkov
(Blagoveschensk Educational State University)
MASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 220724A ( Fermi GBM team, GCN 32423) errorbox 16981 sec after notice time and 17018 sec after trigger time at 2022-07-25 04:26:41 UT, with upper limit up to 17.9 mag. The observations began at zenith distance = 58 deg. The sun altitude is -78.3 deg.
The galactic latitude b = 28 deg., longitude l = 352 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2040301
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
17108 | 2022-07-25 04:26:41 | MASTER-OAFA | (15h 46m 13.07s , -19d 21m 40.3s) | C | 180 | 17.6 |
17742 | 2022-07-25 04:37:15 | MASTER-OAFA | (15h 46m 12.83s , -19d 19m 22.9s) | C | 180 | 17.9 |
17987 | 2022-07-25 04:42:20 | MASTER-OAFA | (15h 55m 41.17s , -22d 23m 42.3s) | C | 60 | 16.7 |
18078 | 2022-07-25 04:43:51 | MASTER-OAFA | (15h 52m 36.37s , -14d 42m 48.9s) | C | 60 | 17.1 |
18445 | 2022-07-25 04:49:58 | MASTER-OAFA | (15h 36m 33.55s , -15d 43m 53.3s) | C | 60 | 17.6 |
18811 | 2022-07-25 04:56:04 | MASTER-OAFA | (15h 47m 09.28s , -20d 53m 04.9s) | C | 60 | 16.7 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.