Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 22687

Subject
GRB 180504A: ePESSTO NTT NIR observations
Date
2018-05-05T15:09:36Z (6 years ago)
From
Paolo D'Avanzo at INAF-OAB <paolo.davanzo@brera.inaf.it>
P. Clark (QUB), O. McBrien (QUB), D. Malesani (DAWN, DARK), P. D'Avanzo (INAF-OAB), E. Kankare (QUB), 
M. T. Botticella (INAF Capodimonte), K. Maguire (QUB), M. Dennefeld (IAP, Paris), C. Inserra (Southampton), 
S. J. Smartt (QUB), O. Yaron (Weizmann), D. R. Young (QUB), I. Manulis (Weizmann) report:

We observed the field of GRB 180504A (Lien et al., GCN Circ. 22682) under the extended Public ESO Spectroscopic 
Survey for Transient Objects (ePESSTO; see Smartt et al. 2015, A&A, 579, 40 http://www.pessto.org <http://www.pessto.org/> ). The observations 
were performed on the ESO New Technology Telescope at La Silla with the SofI instrument in imaging mode starting from 
2018-05-05 at 08:37:49 UT (i.e. about 12.9 hours from the burst) and consisted of 15 images obtained with the J filter, 
each one lasting 90s.

The afterglow candidate reported by Malesani et al. (GCN Circ. 22684) is clearly detected. From preliminary photometry, 
we estimate a magnitude of J ~ 21.3 (Vega, calibrated against the 2MASS catalogue).
Looking for U.S. government information and services? Visit USA.gov