Published in
Gamma-ray Bursts: 15 Years of GRB Afterglows, p. 267-270, 2020
DOI: 10.1051/978-2-7598-1002-4-044
Gamma-ray Bursts: 15 Years of GRB Afterglows, p. 267-270, 2020
DOI: 10.1051/978-2-7598-1002-4.c044
EDP Sciences, EAS Publications Series, (61), p. 267-269
DOI: 10.1051/eas/1361042
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GRB 110715A: Multiwavelength study of the first gamma-ray burst observed with ALMA
,
J. Gorosabel,
T. Murphy ,
Da A. Kann,
Cc C. Thöne,
A. Lundgren,
A. Kamble,
I. de Gregorio Monsalvo ,
Samantha R. Oates ,
Jpu P. U. Fynbo,
D. Garcia-Appadoo,
S. Martín,
Npm P. M. Kuin
and other authors.
Abstract
GRB 110715A had a bright afterglow that was obscured in the optical by a high Galactic extinction. We discovered the submillimeter counterpart with APEX and followed it in radio with ATCA for over 2 months. Additional submm observations were performed with ALMA as a test of the ToO procedures during commissioning, becoming the first GRB afterglow to be detected by the observatory. UV, optical and NIR observations were performed with Swift/UVOT and 2.2 m/GROND in La Silla and X-ray data were obtained by Swift/XRT. The dataset is complemented with spectroscopic data from the VLT/X-shooter spectrograph. The absorption features present in the intermediate resolution optical/nIR spectra reveal a redshift of 0.8224 and a host galaxy environment with low ionization. We fit in the host galaxy absorption features two velocity components separated by 30 km/s, implying a host galaxy with low dynamical activity. © EAS, EDP Sciences 2013.