GRB 190507.97, GRB 190507B
GCN Circular 24425
Subject
GRB 190507B: GOTO optical counterpart search
Date
2019-05-08T11:45:34Z (7 years ago)
From
Danny Steeghs at U.of Warwick/GOTO <dsteeghs@gmail.com>
Y-L.Mong(1), K.Ackley(1), M.Kennedy(2), A.Obradovic(1), D.K.Galloway(1),
D.Steeghs(3), J.Lyman(3), K.Ulaczyk(3), K.Wiersema(3), M.Dyer(4),
V.Dhillon(4),
P.O'Brien(5), G.Ramsay(6), D.Pollacco(3), E.Thrane(1), S.Poshyachinda(7),
E.Palle(8), R.Cutter(3), A.Levan(3), T. Marsh(3), R.West(3), ,
B.Gompertz(3),
E.Stanway(3), A.Casey(1), M.Brown(1), E.Rol(1), J.Mullaney(4),
S.Littlefair(4),
L.Makrygianni(4), E.Daw(4), J.Maund(4), R.Starling(5), R.Eyles(5),
S.Tooke(5),
U.Sawangwit(7), D.Mkrtichian(7), S.Awiphan(7), S.Aukkaravittayapun(7),
P.Irawati(7),
R.Breton(2), D.Mata-Sanchez(2), T.Heikkila(9), R.Kotak(9)
(1) Monash University; (2) Univ. of Manchester; (3) Warwick University;
(4) Univ. of Sheffield; (5) University of Leicester; (6) Armagh Observatory;
(7) National Astronomical Research Institute of Thailand;
(8) Instituto de Astrofisica de Canarias; (9) University of Turku
report on behalf of the GOTO collaboration:
We carried out observations with the Gravitational-wave Optical
Transient Observer (GOTO), in response to the Fermi trigger 578963794
(GRB190507.97, on 2019 May 7 23:16:29.64 UT, GCN #24422).
We made a series of 60s observations using our wide L-band filter
(400-700 nm), beginning on 2019 May 8 02:55 UT. We observed five
pointings covering 81.9% of the estimated sky uncertainty region of
3.9 degrees radius (68% confidence based on skymap linked in GCN
#24422).
We found no credible counterparts to the GRB detection, down to a
typical (5-sigma) limit of 19.7 mag.
We identify a single transient candidate, GOTO2019ayff, at
19:14:03.21, -23:12:37.88 detected at 17.66+/-0.03 mag (L) on 2019
May 8, 03:10 UT. The transient was subsequently found in a previous
image of the field on 2019 May 2 04:17:29 UT, pre-dating the Fermi
trigger, and is thus unrelated to the GRB. The estimated magnitude
(based on PS1 g-band calibrators) is roughly consistent with the
C-band limit reported for the Fermi trigger field by the MASTER
network (GCN #24423).
No object is known in Gaia DR2, Pan-STARRS, APASS, 2MASS, SIMBAD, or
TNS within 2.5" of this position. The source is close to (3.5"), but
clearly distinct from, a g=17.7 star in Pan-STARRS DR2 and was not
present in our reference epoch taken on 2019 April 13. The transient
may be associated with the nearby (20") galaxy 2MASX
J19140330-2312186.
GOTO is operated at the La Palma observing facilities of the
University of Warwick on behalf of a consortium including the
University of Warwick, Monash University, Armagh Observatory, the
University of Leicester, the University of Sheffield, the National
Astronomical Research Institute of Thailand (NARIT) and the Instituto
de Astrofisica de Canarias (IAC) (https://goto-observatory.org)
GCN Circular 24423
Subject
Fermi GRB190507.97 Global MASTER-Net observations report
Date
2019-05-08T02:16:11Z (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-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB190507.97 (trigger No 578963794, 19h 11m 16.80s , -22d 49m 12.00s, R=1.19) errorbox 581 sec after trigger time at 2019-05-07 23:26:10 UT, with upper limit up to 18.5 mag. The observations began at zenit distance = 71 deg. The sun altitude is -22.2 deg.
MASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB190507.97 errorbox 588 sec after trigger time at 2019-05-07 23:26:17 UT, with upper limit up to 16.2 mag. The observations began at zenit distance = 46 deg. The sun altitude is -71.0 deg.
MASTER-IAC robotic telescope located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB190507.97 errorbox 9230 sec after trigger time at 2019-05-08 01:50:19 UT, with upper limit up to 17.7 mag. The observations began at zenit distance = 70 deg. The sun altitude is -43.4 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=1011890
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
642 | 2019-05-07 23:26:10 | MASTER-Kislovodsk | ( 19h 10m 16.31s , -22d 36m 28.33s) | P- | 120 | 17.4 |
642 | 2019-05-07 23:26:10 | MASTER-Kislovodsk | ( 19h 10m 14.47s , -23d 4m 48.28s) | P| | 120 | 17.6 |
648 | 2019-05-07 23:26:17 | MASTER-SAAO | ( 19h 15m 15.23s , -22d 48m 17.92s) | C | 120 | 14.5 |
813 | 2019-05-07 23:26:17 | MASTER-SAAO | ( 19h 15m 15.23s , -22d 48m 18.00s) | C | 450 | 16.0 | Coadd
801 | 2019-05-07 23:28:35 | MASTER-Kislovodsk | ( 19h 10m 16.56s , -22d 36m 27.82s) | P- | 150 | 17.5 |
801 | 2019-05-07 23:28:35 | MASTER-Kislovodsk | ( 19h 10m 14.84s , -23d 4m 48.14s) | P| | 150 | 17.7 |
812 | 2019-05-07 23:28:46 | MASTER-SAAO | ( 19h 15m 20.28s , -22d 48m 13.65s) | C | 150 | 16.2 |
991 | 2019-05-07 23:31:30 | MASTER-Kislovodsk | ( 19h 10m 16.84s , -22d 36m 25.94s) | P- | 180 | 17.6 |
991 | 2019-05-07 23:31:30 | MASTER-Kislovodsk | ( 19h 10m 15.28s , -23d 4m 46.56s) | P| | 180 | 17.8 |
1009 | 2019-05-07 23:31:48 | MASTER-SAAO | ( 19h 15m 20.48s , -22d 48m 13.68s) | C | 180 | 14.0 |
1196 | 2019-05-07 23:34:55 | MASTER-Kislovodsk | ( 19h 10m 17.16s , -22d 36m 24.46s) | P- | 180 | 17.6 |
1196 | 2019-05-07 23:34:55 | MASTER-Kislovodsk | ( 19h 10m 15.71s , -23d 4m 45.16s) | P| | 180 | 17.9 |
1401 | 2019-05-07 23:38:19 | MASTER-Kislovodsk | ( 19h 10m 17.52s , -22d 36m 22.59s) | P- | 180 | 17.6 |
1401 | 2019-05-07 23:38:19 | MASTER-Kislovodsk | ( 19h 10m 16.11s , -23d 4m 42.50s) | P| | 180 | 17.9 |
1607 | 2019-05-07 23:41:45 | MASTER-Kislovodsk | ( 19h 10m 16.51s , -23d 4m 40.03s) | P| | 180 | 17.9 |
2046 | 2019-05-07 23:50:05 | MASTER-Kislovodsk | ( 19h 10m 32.16s , -21d 46m 27.79s) | C | 60 | 17.9 |
2046 | 2019-05-07 23:50:05 | MASTER-Kislovodsk | ( 19h 19m 24.98s , -22d 14m 39.16s) | C | 60 | 18.1 |
2141 | 2019-05-07 23:51:39 | MASTER-Kislovodsk | ( 19h 10m 11.70s , -23d 46m 44.82s) | C | 60 | 17.9 |
2141 | 2019-05-07 23:51:39 | MASTER-Kislovodsk | ( 19h 19m 11.60s , -24d 14m 59.90s) | C | 60 | 18.5 |
2232 | 2019-05-07 23:53:11 | MASTER-Kislovodsk | ( 19h 2m 13.39s , -22d 14m 43.49s) | C | 60 | 18.1 |
2318 | 2019-05-07 23:54:37 | MASTER-Kislovodsk | ( 19h 1m 44.00s , -24d 14m 21.74s) | C | 60 | 17.9 |
2415 | 2019-05-07 23:56:13 | MASTER-Kislovodsk | ( 19h 10m 32.85s , -21d 46m 26.89s) | C | 60 | 18.0 |
2415 | 2019-05-07 23:56:13 | MASTER-Kislovodsk | ( 19h 19m 25.63s , -22d 14m 37.28s) | C | 60 | 18.0 |
2501 | 2019-05-07 23:57:40 | MASTER-Kislovodsk | ( 19h 10m 12.38s , -23d 46m 42.34s) | C | 60 | 17.9 |
2501 | 2019-05-07 23:57:40 | MASTER-Kislovodsk | ( 19h 19m 12.38s , -24d 14m 55.94s) | C | 60 | 18.5 |
2592 | 2019-05-07 23:59:11 | MASTER-Kislovodsk | ( 19h 2m 14.16s , -22d 14m 39.20s) | C | 60 | 18.1 |
2687 | 2019-05-08 00:00:46 | MASTER-Kislovodsk | ( 19h 1m 44.85s , -24d 14m 17.30s) | C | 60 | 17.9 |
2778 | 2019-05-08 00:02:17 | MASTER-Kislovodsk | ( 19h 12m 16.54s , -19d 46m 28.21s) | C | 60 | 18.0 |
3813 | 2019-05-08 00:19:32 | MASTER-Kislovodsk | ( 19h 12m 23.12s , -19d 46m 43.91s) | C | 60 | 17.5 |
3902 | 2019-05-08 00:21:00 | MASTER-Kislovodsk | ( 19h 12m 23.27s , -19d 46m 24.42s) | C | 60 | 17.7 |
3990 | 2019-05-08 00:22:28 | MASTER-Kislovodsk | ( 19h 11m 21.53s , -25d 46m 10.78s) | C | 60 | 17.6 |
4089 | 2019-05-08 00:24:08 | MASTER-Kislovodsk | ( 19h 4m 05.56s , -20d 14m 58.17s) | C | 60 | 17.9 |
4362 | 2019-05-08 00:28:41 | MASTER-Kislovodsk | ( 19h 11m 22.27s , -25d 46m 12.06s) | C | 60 | 17.1 |
4457 | 2019-05-08 00:30:15 | MASTER-Kislovodsk | ( 19h 4m 06.16s , -20d 14m 57.44s) | C | 60 | 18.0 |
4549 | 2019-05-08 00:31:47 | MASTER-Kislovodsk | ( 19h 4m 08.15s , -20d 14m 56.77s) | C | 60 | 17.9 |
9261 | 2019-05-08 01:50:19 | MASTER-IAC | ( 19h 10m 18.10s , -21d 58m 01.00s) | C | 60 | 17.7 |
9261 | 2019-05-08 01:50:19 | MASTER-IAC | ( 19h 19m 04.89s , -22d 1m 07.21s) | C | 60 | 17.5 |
9596 | 2019-05-08 01:55:54 | MASTER-IAC | ( 19h 10m 16.72s , -21d 58m 01.14s) | C | 60 | 17.4 |
9596 | 2019-05-08 01:55:54 | MASTER-IAC | ( 19h 19m 03.73s , -22d 1m 07.01s) | C | 60 | 17.4 |
9715 | 2019-05-08 01:57:54 | MASTER-IAC | ( 19h 19m 05.53s , -22d 1m 08.14s) | C | 60 | 17.5 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 24422
Subject
GRB 190507B: Fermi GBM Final Real-time Localization
Date
2019-05-07T23:28:23Z (7 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 23:16:29 UT on 7 May 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190507B (trigger 578963794.637806 / 190507970).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 287.8, Dec = -22.8 (J2000 degrees, equivalent to J2000 19h 11m, 22d -49'), with a statistical uncertainty of 1.2 degrees.
The angle from the Fermi LAT boresight is 75.0 degrees.
The skymap can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190507970/quicklook/glg_skymap_all_bn190507970.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/bn190507970/quicklook/glg_healpix_all_bn190507970.fit
The GBM light curve can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190507970/quicklook/glg_lc_medres34_bn190507970.gif