GCN Circular 25545
Subject
LIGO/Virgo S190814bv: Swift observation of ASKAP J005547-270433/AT2019osy
Date
2019-08-29T13:12:01Z (5 years ago)
From
Sergio Campana at INAF-OAB <sergio.campana@brera.inaf.it>
P. A. Evans (U. Leicester), J. A. Kennea (PSU),
A. Tohuvavohu (PSU), S. D. Barthelmy (NASA/GSFC),
A. P. Beardmore (U. Leicester), M. G. Bernardini (INAF-OAB),
A. A. Breeveld (MSSL-UCL), P. Brown (TAMU),
D. N. Burrows (PSU), S. Campana (INAF-OAB),
S. B. Cenko (NASA/GSFC), G. Cusumano (INAF-IASF PA),
A. D'Ai (INAF-IASFPA), P. D'Avanzo (INAF-OAB),
V. D'Elia (ASI-SSDC), S. Emery (UCL-MSSL), P. Giommi (ASI),
C. Gronwall (PSU), D. Hartmann (Clemson U.), N. J. Klingler (PSU),
H. A. Krimm (NSF), N. P. M. Kuin (UCL-MSSL),
A. Y. Lien (GSFC/UMBC), D. B. Malesani (DTU Space),
F. E. Marshall (NASA/GSFC), A. Melandri (INAF-OAB),
J. A. Nousek (PSU), S. R. Oates (Uni. of Warwick),
P. T. O'Brien (U. Leicester), J. P. Osborne (U. Leicester),
C. Pagani (U. Leicester), K. L. Page (U.Leicester),
M. J. Page (UCL-MSSL), D. M. Palmer (LANL),
M. Perri (ASI-SSDC), J. L. Racusin (NASA/GSFC),
T. Sakamoto (AGU), B. Sbarufatti (INAF-OAB/PSU),
M. H. Siegel (PSU), G. Tagliaferri (INAF-OAB),
E. Troja (NASA/GSFC/UMCP),
report on behalf of the Swift team:
We observed the field of ASKAP J005547-270433/AT2019osy (Stewart et al.
GCN 25487) with the Neil Gehrels Swift observatory on August 27
and 28, 2019.
The total exposure with the XRT is 4746 s. The source is not detected
with an upper limit on the count rate of 1.96e-3 count/s.
At a scale distance of 330 Mpc (Perley et al. GCN 25494), this results
in an upper limit on the 0.3-10 keV unabsorbed luminosity of ~8e41 erg/s.
The UVOT observed the field with the u filter. The total exposure is
4667 s.
We clearly detect the galaxy 2dFGRS TGS211Z177 as a slightly extended
source at an u(AB) magnitude of 21.08+/-0.09 (5 arcsec aperture).
No other sources are apparent in the close proximity of the galaxy.