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TITLE:   GCN CIRCULAR
NUMBER:  24851
SUBJECT: GRB 190619B: Fermi GBM Final Real-time Localization
DATE:    19/06/19 14:27:35 GMT
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 14:16:25 UT on 19 Jun 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190619B (trigger 582646590.891184 / 190619595).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 291.1, Dec = 20.2 (J2000 degrees, equivalent to J2000 19h 24m, 20d 11'), with a statistical uncertainty of 1.8 degrees.

The angle from the Fermi LAT boresight is 93.0 degrees.

The skymap can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190619595/quicklook/glg_skymap_all_bn190619595.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190619595/quicklook/glg_healpix_all_bn190619595.fit

The GBM light curve can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190619595/quicklook/glg_lc_medres34_bn190619595.gif

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TITLE:   GCN CIRCULAR
NUMBER:  24852
SUBJECT: GRB 190619B: BALROG localization (Fermi Trigger 582646590 / GRB 190619595)
DATE:    19/06/19 14:37:34 GMT
FROM:    Jochen Greiner at MPE,Garching  <jcg@mpe.mpg.de>

J. Burgess, B. Biltzinger, F. Kunzweiler, F. Berlato,  & J. Greiner (all MPE Garching) report:

The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
582646590 at 14:16:25 on 19 June 2019 were automatically fitted for spectrum
and sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427;
Berlato et al. 2019, ApJ 873, 60).

The best-fit position (1 sigma statistical errors) is:
RA(2000.0) = 293.4+/-1.6 deg
Decl.(2000.0) = 14.3+/-1.8 deg
We estimate an additional systematic error of 1 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB190619595/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB190619595/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB190619595/json

                        

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TITLE:   GCN CIRCULAR
NUMBER:  24883
SUBJECT: GRB 190619B: AstroSat CZTI detection
DATE:    19/06/26 06:22:17 GMT
FROM:    Prachee Ghumatkar at IUCAA/AstroSat  <prachee@iucaa.in>

P. Ghumatkar, V. Sharma, D. Bhattacharya and A. Vibhute (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 a long GRB 190619B, which was also detected by Fermi GBM (GCN #24851), BALROG (Burgess J. et la., GCN #24852) and Global MASTER-Net (Lipunov V. et al., GCN #24853).

The source was clearly detected in the 40-200 keV energy range. The light curve shows multiple pulses of emission with strongest peak at 14:16:44.5 UT. The measured peak count rate associated with the burst is 251 cts/s above the background in the combined data of four quadrants, with a total of 3318 cts. The local mean background count rate was 620 cts/s. Using cumulative rates, we measure a T90 of 38.6 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.