GRB 240118B
GCN Circular 35562
Subject
GRB 240118B: Fermi GBM Final Real-time Localization
Date
2024-01-18T12:21:43Z (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 12:11:05 UT on 18 Jan 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240118B (trigger 727272670.288166 / 240118508).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 49.8, Dec = -55.0 (J2000 degrees, equivalent to J2000 03h 19m, -55d 00'), with a statistical uncertainty of 7.1 degrees.
The angle from the Fermi LAT boresight is 44.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240118508/quicklook/glg_skymap_all_bn240118508.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/bn240118508/quicklook/glg_healpix_all_bn240118508.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240118508/quicklook/glg_lc_medres34_bn240118508.gif
GCN Circular 35571
Subject
Fermi GRB 240118B: Global MASTER-Net observations report
Date
2024-01-19T00:31:43Z (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 240118B ( Fermi GBM team, GCN 35562) errorbox 43321 sec after notice time and 43354 sec after trigger time at 2024-01-19 00:13:40 UT, with upper limit up to 18.5 mag. The observations began at zenith distance = 65 deg. The sun altitude is -33.7 deg.
The galactic latitude b = -51 deg., longitude l = 269 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2359396
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
43385 | 2024-01-19 00:13:40 | MASTER-SAAO | (03h 19m 56.04s , -54d 00m 56.6s) | C | 60 | 18.4 |
43476 | 2024-01-19 00:15:11 | MASTER-SAAO | (03h 30m 18.84s , -53d 48m 55.0s) | C | 60 | 18.3 |
43476 | 2024-01-19 00:15:11 | MASTER-SAAO | (03h 33m 26.11s , -54d 01m 50.8s) | C | 60 | 18.1 |
43556 | 2024-01-19 00:16:31 | MASTER-SAAO | (03h 06m 29.36s , -55d 42m 49.0s) | C | 60 | 18.5 |
43556 | 2024-01-19 00:16:31 | MASTER-SAAO | (03h 09m 45.21s , -55d 55m 46.4s) | C | 60 | 18.5 |
43636 | 2024-01-19 00:17:51 | MASTER-SAAO | (03h 33m 30.51s , -55d 40m 53.5s) | C | 60 | 18.1 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.