GRB 190419.41, GRB 190419A, GRB 190419
GCN Circular 24297
Subject
GRB 190419A: AstroSat CZTI detection
Date
2019-04-27T19:16:28Z (7 years ago)
From
Tanazza Khanam at IUCAA <tanazza@iucaa.in>
T. Khanam, 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 GRB 190419A, which was also detected by FERMI (Kunzweiler F. et al, GCN #24132) and Global-MASTER Net (Lipunov V. et al, GCN #24135).
The source was clearly detected in the 40-200 keV energy range. The light curve shows multiple peaks of emission with strongest peak at 09:55:42.5 UT. The measured peak count rate associated with the burst is 134.65 cts/s above the background in the combined data of four quadrants, with a total of 690 cts. The local mean background count rate was 488.3 cts/s. Using cumulative rates, we measure a T90 of 7.7 s.
It was more 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 24135
Subject
Fermi GRB190419.41 Global MASTER-Net observations report
Date
2019-04-20T00:31:30Z (7 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina, P.Balanutsa,
A.Kuznetsov, V.V.Chazov, D. Vlasenko
Lomonosov Moscow State University,
Sternberg Astronomical Institute, Moscow State University
A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory
K. Ivanov, O. Gres, N.M. Budnev, S. Yazev, O. Chuvalaev, V. Poleshchuk
Irkutsk State University
V. Yurkov, A. Gabovich, Yu. Sergienko
Blagoveschensk Educational State University, Blagoveschensk
R. Podesta, Carlos Lopez and F. Podesta
Observatorio Astronomico Felix Aguilar (OAFA)
Hugo Levato and Carlos Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias
D. Buckley, S. Potter, A. Kniazev, M. Kotze
South African Astronomical Observatory
MASTER-IAC robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB190419.41 ( 6h 54m 04.80s , -41d 44m 24.00s, R=2.28) errorbox 38347 sec after trigger time at 2019-04-19 20:34:45 UT, with upper limit up to 17.2 mag. Observations started at twilight. The observations began at zenit distance = 78 deg. The sun altitude is -14.4 deg.
MASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB190419.41 errorbox 46746 sec after trigger time at 2019-04-19 22:54:43 UT, with upper limit up to 18.0 mag. Observations started at twilight. The observations began at zenit distance = 19 deg. The sun altitude is -10.1 deg.
The galactic latitude b = -60 deg., longitude l = 98 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=999842
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
38378 | 2019-04-19 20:34:45 | MASTER-IAC | ( 7h 0m 19.65s , -37d 55m 50.55s) | C | 60 | 17.2 |
38496 | 2019-04-19 20:36:43 | MASTER-IAC | ( 7h 12m 27.19s , -39d 55m 29.19s) | C | 60 | 17.0 |
39165 | 2019-04-19 20:47:52 | MASTER-IAC | ( 7h 0m 20.07s , -37d 55m 58.45s) | C | 60 | 17.1 |
39271 | 2019-04-19 20:49:38 | MASTER-IAC | ( 7h 12m 26.25s , -39d 55m 16.39s) | C | 60 | 17.0 |
46776 | 2019-04-19 22:54:43 | MASTER-OAFA | ( 6h 42m 50.48s , -41d 57m 52.47s) | C | 60 | 16.9 |
46930 | 2019-04-19 22:57:17 | MASTER-OAFA | ( 6h 51m 36.62s , -39d 58m 01.36s) | C | 60 | 17.0 |
47320 | 2019-04-19 23:03:47 | MASTER-OAFA | ( 6h 42m 50.16s , -41d 57m 51.10s) | C | 60 | 17.5 |
47424 | 2019-04-19 23:05:32 | MASTER-OAFA | ( 6h 53m 34.58s , -41d 57m 32.96s) | C | 60 | 17.6 |
47534 | 2019-04-19 23:07:21 | MASTER-OAFA | ( 6h 51m 36.39s , -39d 58m 00.71s) | C | 60 | 17.7 |
47645 | 2019-04-19 23:09:13 | MASTER-OAFA | ( 7h 2m 03.82s , -39d 57m 42.54s) | C | 60 | 17.7 |
47751 | 2019-04-19 23:10:58 | MASTER-OAFA | ( 6h 53m 38.57s , -41d 56m 57.57s) | C | 60 | 17.8 |
47859 | 2019-04-19 23:12:46 | MASTER-OAFA | ( 6h 56m 14.21s , -43d 57m 11.85s) | C | 60 | 17.8 |
47966 | 2019-04-19 23:14:34 | MASTER-OAFA | ( 7h 2m 06.54s , -39d 57m 05.77s) | C | 60 | 17.9 |
48312 | 2019-04-19 23:20:20 | MASTER-OAFA | ( 6h 56m 14.21s , -43d 56m 47.01s) | C | 60 | 17.9 |
48422 | 2019-04-19 23:22:10 | MASTER-OAFA | ( 7h 7m 20.97s , -43d 56m 49.51s) | C | 60 | 17.8 |
48534 | 2019-04-19 23:24:01 | MASTER-OAFA | ( 7h 4m 24.15s , -41d 56m 38.58s) | C | 60 | 17.9 |
48749 | 2019-04-19 23:27:36 | MASTER-OAFA | ( 7h 7m 22.43s , -43d 56m 53.15s) | C | 60 | 17.9 |
48860 | 2019-04-19 23:29:27 | MASTER-OAFA | ( 7h 4m 24.16s , -41d 56m 40.84s) | C | 60 | 17.9 |
48972 | 2019-04-19 23:31:19 | MASTER-OAFA | ( 7h 15m 08.56s , -41d 56m 21.42s) | C | 60 | 17.7 |
49415 | 2019-04-19 23:38:42 | MASTER-OAFA | ( 6h 45m 08.81s , -43d 57m 15.90s) | C | 60 | 18.0 |
49521 | 2019-04-19 23:40:28 | MASTER-OAFA | ( 7h 15m 08.38s , -41d 56m 25.07s) | C | 60 | 17.6 |
49736 | 2019-04-19 23:44:03 | MASTER-OAFA | ( 6h 45m 09.06s , -43d 57m 19.26s) | C | 60 | 17.9 |
50052 | 2019-04-19 23:49:20 | MASTER-OAFA | ( 6h 41m 14.61s , -39d 57m 32.15s) | C | 60 | 17.8 |
50261 | 2019-04-19 23:52:48 | MASTER-OAFA | ( 6h 50m 17.04s , -37d 57m 38.10s) | C | 60 | 17.7 |
50365 | 2019-04-19 23:54:32 | MASTER-OAFA | ( 6h 41m 14.56s , -39d 57m 53.67s) | C | 60 | 17.7 |
50576 | 2019-04-19 23:58:03 | MASTER-OAFA | ( 6h 50m 17.15s , -37d 57m 38.81s) | C | 60 | 17.6 |
50687 | 2019-04-19 23:59:54 | MASTER-OAFA | ( 7h 0m 27.48s , -37d 57m 00.24s) | C | 60 | 17.7 |
51009 | 2019-04-20 00:05:16 | MASTER-OAFA | ( 7h 0m 27.58s , -37d 57m 19.94s) | C | 60 | 17.8 |
52065 | 2019-04-20 00:22:53 | MASTER-OAFA | ( 7h 12m 34.25s , -39d 56m 52.88s) | C | 60 | 17.5 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 24132
Subject
Fermi Trigger 577360542 / GRB 190419414 / GRB190419A: BALROG localization
Date
2019-04-19T10:40:39Z (7 years ago)
From
Jochen Greiner at MPE,Garching <jcg@mpe.mpg.de>
F. Kunzweiler, B. Biltzinger, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
577360542 at 09:55:37 on 19 April 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) = 112.4+/-5.1 deg
Decl.(2000.0) = -38.8+/-1.8 deg
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB190419414/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB190419414/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB190419414/json