GRB 230628C
GCN Circular 34106
Subject
GRB 230628C: Fermi GBM Final Real-time Localization
Date
2023-06-28T17:47:08Z (2 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 17:36:34 UT on 28 Jun 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230628C (trigger 709666599.86266 / 230628734).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 301.0, Dec = 35.6 (J2000 degrees, equivalent to J2000 20h 03m, 35d 36'), with a statistical uncertainty of 3.3 degrees.
The angle from the Fermi LAT boresight is 18.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230628734/quicklook/glg_skymap_all_bn230628734.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/bn230628734/quicklook/glg_healpix_all_bn230628734.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230628734/quicklook/glg_lc_medres34_bn230628734.gif
GCN Circular 34120
Subject
Fermi GRB 230628C: Global MASTER-Net observations report
Date
2023-06-29T11:30:37Z (2 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-OAGH robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Mexico (OAGH National Institute for Astrophysics, Optics and Electronics) started inspect of the Fermi GRB 230628C ( Fermi GBM team, GCN 34106) errorbox 61791 sec after notice time and 61823 sec after trigger time at 2023-06-29 10:46:57 UT, with upper limit up to 17.1 mag. Observations started at twilight. The observations began at zenith distance = 27 deg. The sun altitude is -16.8 deg.
The galactic latitude b = 2 deg., longitude l = 73 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2229961
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
61913 | 2023-06-29 10:46:57 | MASTER-OAGH | (19h 47m 59.92s , +37d 05m 18.1s) | C | 180 | 17.1 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 34171
Subject
GRB 230628C: GRID Detection
Date
2023-07-08T14:30:08Z (2 years ago)
From
GRID Student Team at Tsinghua University <grid@tsinghua.edu.cn>
Chenyu Wang and Zirui Yang report on behalf of the GRID Collaboration:
The long-duration GRB 230628C (Fermi GBM detection: GCN Circular 34106) was observed with GRID-07.
The detection was confirmed at the trigger time 2023-06-28T17:36:22.8 UTC. The T90 duration measured with GRID is 49.0 s.
A brief introduction to GRID can be found at https://doi.org/10.1007/s10686-019-09636-w and https://doi.org/10.1007/s10686-021-09819-4.