GRB 231030A
GCN Circular 34907
Subject
GRB 231030A: Fermi GBM Final Real-time Localization
Date
2023-10-30T00:18:11Z (2 years 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 00:07:34 UT on 30 Oct 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231030A (trigger 720317259.119418 / 231030005).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 46.8, Dec = 49.1 (J2000 degrees, equivalent to J2000 03h 07m, 49d 06'), with a statistical uncertainty of 16.3 degrees.
The angle from the Fermi LAT boresight is 71.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231030005/quicklook/glg_skymap_all_bn231030005.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231030005/quicklook/glg_healpix_all_bn231030005.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231030005/quicklook/glg_lc_medres34_bn231030005.gif
GCN Circular 34908
Subject
Fermi GRB 231030A: Global MASTER-Net observations report
Date
2023-10-30T00:46:38Z (2 years 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-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 231030A ( Fermi GBM team, GCN 34907) errorbox 385 sec after notice time and 423 sec after trigger time at 2023-10-30 00:14:37 UT, with upper limit up to 17.8 mag. The observations began at zenith distance = 26 deg. The sun altitude is -43.0 deg.
The galactic latitude b = -8 deg., longitude l = 145 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2293042
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
454 | 2023-10-30 00:14:37 | MASTER-Tavrida | (03h 04m 47.73s , +31d 27m 09.4s) | C | 60 | 16.6 |
1375 | 2023-10-30 00:29:59 | MASTER-Tavrida | (04h 11m 37.15s , +39d 06m 30.5s) | C | 60 | 17.8 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.