GRB 200201, GRB 200201A
GCN Circular 27046
Subject
GRB 2002011A: AstroSat CZTI detection
Date
2020-02-13T06:05:11Z (6 years ago)
From
Ramkrishna Gaikwad at IUCAA/AstroSat <ramkrishna@iucaa.in>
R. Gaikwad, S. Gupta, V. Sharma, A. Vibhute and D. Bhattacharya (IUCAA), V. Bhalerao (IIT-B), A. R. Rao (TIFR) and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:
Analysis of AstroSat CZTI data showed the detection of the long GRB 2002011A, which was also detected by Fermi GBM Final Real-time Localization (GCN #27031) and BALROG (Biltzinger B. et al., GCN #27032).
The source was clearly detected in the 40-200 keV energy range. The light curve showed a single peak of emission peaking at 2020-02-11 07:26:31.01 UT. The measured peak count rate associated with the burst is 220 +/- 28.6 cts/s above the background in the combined data of four quadrants, with a total of 1006 +/- 46.0 cts. The local mean background count rate was 510 +/- 16.3 cts/s. Using cumulative rates, we measure a T90 of 12.0 +/- 0.19 s.
It was also clearly detected in the CsI anticoincidence (Veto) detector in the 100-500 keV energy range.
CZTI GRB detections are reported regularly on the payload site at http://astrosat.iucaa.in/czti/?q=grb. CZTI is built by a TIFR-led consortium of institutes across India, including VSSC, ISAC, IUCAA, SAC and PRL. The Indian Space Research Organisation funded, managed and facilitated the project.
GCN Circular 26955
Subject
GRB 200201A: Fermi GBM Final Real-time Localization
Date
2020-02-01T01:07:36Z (6 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 00:57:20 UT on 1 Feb 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200201A (trigger 602211445.321872 / 200201040).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 287.7, Dec = -11.0 (J2000 degrees, equivalent to J2000 19h 10m, -11d 00'), with a statistical uncertainty of 6.7 degrees.
The angle from the Fermi LAT boresight is 54.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200201040/quicklook/glg_skymap_all_bn200201040.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/bn200201040/quicklook/glg_healpix_all_bn200201040.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200201040/quicklook/glg_lc_medres34_bn200201040.gif