GRB 200824A
GCN Circular 28283
Subject
GRB 200824A: Fermi GBM Final Real-time Localization
Date
2020-08-24T14:25:59Z (5 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 SHORT GRB
At 14:15:38 UT on 24 Aug 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200824A (trigger 619971343.818026 / 200824594).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 117.7, Dec = 10.5 (J2000 degrees, equivalent to J2000 07h 50m, 10d 30'), with a statistical uncertainty of 15.4 degrees.
The angle from the Fermi LAT boresight is 58.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200824594/quicklook/glg_skymap_all_bn200824594.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200824594/quicklook/glg_healpix_all_bn200824594.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200824594/quicklook/glg_lc_medres34_bn200824594.gif
GCN Circular 28296
Subject
Fermi GRB 200824A: Global MASTER-Net observations report
Date
2020-08-27T19:09:07Z (5 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin,
V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,
D.Kuvshinov, D. Cheryasov
(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, O.Ershova
(Irkutsk State University, API),
A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),
V. Yurkov, A. Gabovich, Yu. Sergienko
(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 200824A ( Fermi GBM team, GCN 28283) errorbox 2 days 40217 sec after notice time and 2 days 40245 sec after trigger time at 2020-08-27 01:26:24 UT, with upper limit up to 16.4 mag. Observations started at twilight. The observations began at zenith distance = 64 deg. The sun altitude is -16.3 deg.
MASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 200824A errorbox 2 days 68646 sec after notice time and 2 days 68673 sec after trigger time at 2020-08-27 09:20:12 UT, with upper limit up to 17.7 mag. The observations began at zenith distance = 66 deg. The sun altitude is -21.4 deg.
The galactic latitude b = 18 deg., longitude l = 211 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1425935
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
213075 | 2020-08-27 01:26:24 | MASTER-Tavrida | (07h 12m 38.47s , +24d 02m 24.8s) | C | 60 | 14.7 |
214850 | 2020-08-27 01:55:58 | MASTER-Tavrida | (07h 19m 46.57s , +26d 02m 10.0s) | C | 60 | 16.4 |
214931 | 2020-08-27 01:57:19 | MASTER-Tavrida | (07h 17m 32.19s , +20d 00m 58.9s) | C | 60 | 15.2 |
215011 | 2020-08-27 01:58:40 | MASTER-Tavrida | (07h 07m 36.58s , +16d 00m 47.4s) | C | 60 | 14.0 |
215418 | 2020-08-27 02:05:26 | MASTER-Tavrida | (06h 47m 06.52s , +14d 01m 43.5s) | C | 60 | 15.4 |
215579 | 2020-08-27 02:08:08 | MASTER-Tavrida | (06h 50m 54.44s , +16d 02m 17.9s) | C | 60 | 15.3 |
241503 | 2020-08-27 09:20:12 | MASTER-OAFA | (07h 22m 58.21s , -02d 39m 33.4s) | C | 60 | 17.7 |
244022 | 2020-08-27 10:02:11 | MASTER-OAFA | (07h 22m 58.79s , -02d 38m 33.0s) | C | 60 | 17.4 |
244102 | 2020-08-27 10:03:30 | MASTER-OAFA | (07h 30m 54.12s , -02d 39m 18.0s) | C | 60 | 17.4 |
244397 | 2020-08-27 10:08:26 | MASTER-OAFA | (06h 46m 38.15s , +13d 20m 22.5s) | C | 60 | 17.2 |
244477 | 2020-08-27 10:09:45 | MASTER-OAFA | (07h 03m 11.85s , +13d 20m 43.8s) | C | 60 | 16.7 |
244558 | 2020-08-27 10:11:06 | MASTER-OAFA | (06h 54m 48.45s , +17d 20m 41.9s) | C | 60 | 16.7 |
244638 | 2020-08-27 10:12:26 | MASTER-OAFA | (07h 07m 02.70s , +15d 19m 02.3s) | C | 60 | 16.5 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 28299
Subject
GRB 200824A: Insight-HXMT/HE detection
Date
2020-08-28T15:39:30Z (5 years ago)
From
Shuo Xiao at IHEP <xiaoshuo@ihep.ac.cn>
S. Xiao, C. Cai, Y. F. Du, Y. G. Zheng, Q. Luo, Q. B. Yi,
Y. Huang, C. K. Li, G. Li, X. B. Li, J. Y. Liao, S. L. Xiong,
C. Z. Liu, X. F. Li, Z. W. Li, Z. Chang, A. M. Zhang,
Y. F. Zhang, X. F. Lu, C. L. Zou (IHEP), Y. J. Jin,
Z. Zhang (THU), T. P. Li (IHEP/THU), F. J. Lu, L. M. Song,
M. Wu, Y. P. Xu, S. N. Zhang (IHEP),
report on behalf of the Insight-HXMT team:
At 2020-08-24T14:15:38.82 (T0), Insight-HXMT/HE detected
GRB 200824A (trigger ID: HEB200824594) in a routine search of the data,
which also triggered Fermi-GBM (Fermi GBM team, GCN 28283).
The Insight-HXMT/HE light curve mainly consists of a single
pulse with a duration (T90) of 1.56 s measured from T0-0.84 s.
The 1-ms peak rate, measured from T0-0.445 s, is 754 cnts/sec.
The total counts from this burst is 569 counts.
URL_LC: http://twiki.ihep.ac.cn/pub/HXMT/GRBList/HEB200824594_lc.jpg
All measurements above are made with the CsI detectors operating in the
regular mode with the energy range of about 80-800 keV (deposited energy).
Only gamma-rays with energy greater than about 200 keV can penetrate
the spacecraft and leave signals in the CsI detectors installed inside
of the telescope.
Insight-HXMT is the first Chinese space X-ray telescope, which was
funded jointly by the China National Space Administration (CNSA) and
the Chinese Academy of Sciences (CAS).
More information about it could be found at:
http://www.hxmt.org.