GRB 220518B
GCN Circular 32064
Subject
GRB 220518B: Fermi GBM Final Real-time Localization
Date
2022-05-18T17:22:18Z (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 17:11:52 UT on 18 May 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220518B (trigger 674586717.27941 / 220518717).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 293.3, Dec = -66.2 (J2000 degrees, equivalent to J2000 19h 33m, -66d 12'), with a statistical uncertainty of 8.4 degrees.
The angle from the Fermi LAT boresight is 28.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220518717/quicklook/glg_skymap_all_bn220518717.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/bn220518717/quicklook/glg_healpix_all_bn220518717.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220518717/quicklook/glg_lc_medres34_bn220518717.gif
GCN Circular 32066
Subject
Fermi GRB 220518B: Global MASTER-Net observations report
Date
2022-05-18T23:15:24Z (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 220518B ( Fermi GBM team, GCN 32064) errorbox 20073 sec after notice time and 20113 sec after trigger time at 2022-05-18 22:47:05 UT, with upper limit up to 15.9 mag. Observations started at twilight. The observations began at zenith distance = 78 deg. The sun altitude is -13.2 deg.
The galactic latitude b = -29 deg., longitude l = 330 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1977596
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
20143 | 2022-05-18 22:47:05 | MASTER-OAFA | (19h 11m 47.26s , -66d 01m 28.7s) | C | 60 | 12.0 |
20332 | 2022-05-18 22:50:13 | MASTER-OAFA | (19h 38m 53.32s , -69d 51m 52.3s) | C | 60 | 15.9 |
20610 | 2022-05-18 22:54:51 | MASTER-OAFA | (18h 56m 16.81s , -69d 50m 05.5s) | C | 60 | 13.9 |
20703 | 2022-05-18 22:56:25 | MASTER-OAFA | (19h 18m 55.06s , -68d 27m 46.9s) | C | 60 | 15.6 |
20800 | 2022-05-18 22:58:02 | MASTER-OAFA | (19h 48m 13.61s , -66d 01m 47.3s) | C | 60 | 15.1 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.