Detailed afterglow modelling and host galaxy properties of the dark GRB 111215A
MetadataShow full item record
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2014, The Authors, Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Gamma-ray burst (GRB) 111215A was bright at X-ray and radio frequencies, but not detected in the optical or near-infrared (nIR) down to deep limits. We have observed the GRB afterglow with the Westerbork Synthesis Radio Telescope and Arcminute Microkelvin Imager at radio frequencies, with the William Herschel Telescope and Nordic Optical Telescope in the nIR/optical, and with the Chandra X-ray Observatory. We have combined our data with the Swift X-Ray Telescope monitoring, and radio and millimetre observations from the literature to perform broad-band modelling, and determined the macro- and microphysical parameters of the GRB blast wave. By combining the broad-band modelling results with our nIR upper limits we have put constraints on the extinction in the host galaxy. This is consistent with the optical extinction we have derived from the excess X-ray absorption, and higher than in other dark bursts for which similar modelling work has been performed. We also present deep imaging of the host galaxy with the Keck I telescope, Spitzer Space Telescope, and Hubble Space Telescope (HST), which resulted in a well-constrained photometric redshift, giving credence to the tentative spectroscopic redshift we obtained with the Keck II telescope, and estimates for the stellar mass and star formation rate of the host. Finally, our high-resolution HST images of the host galaxy show that the GRB afterglow position is offset from the brightest regions of the host galaxy, in contrast to studies of optically bright GRBs.
Showing items related by title, author, creator and subject.
De Gasperin, F.; Intema, Hubertus; Ridl, J.; Salvato, M.; Van Weeren, R.; Bonafede, A.; Greiner, J.; Cassano, R.; Brüggen, M. (2017)Context. Galaxy clusters undergo mergers that can generate extended radio sources called radio relics. Radio relics are the consequence of merger-induced shocks that propagate in the intra cluster medium (ICM). Aims. In ...
The XXL Survey: XXXIV. Double Irony in XXL-North: A tale of two radio galaxies in a supercluster at z = 0.14Horellou, C.; Intema, Hubertus; Smolcic, V.; Nilsson, A.; Karlsson, F.; Krook, C.; Tolliner, L.; Adami, C.; Benoist, C.; Birkinshaw, M.; Caretta, C.; Chiappetti, L.; Delhaize, J.; Ferrari, C.; Fotopoulou, S.; Guglielmo, V.; Kolokythas, K.; Pacaud, F.; Pierre, M.; Poggianti, B.; Ramos-Ceja, M.; Raychaudhury, S.; Röttgering, H.; Vignali, C. (2018)Aims. We show how the XXL multiwavelength survey can be used to shed light on radio galaxies and their environment. Methods. Two prominent radio galaxies were identified in a visual examination of the mosaic of XXL-North ...
Saxena, A.; Marinello, M.; Overzier, R.; Best, P.; Röttgering, H.; Duncan, K.; Prandoni, I.; Pentericci, L.; Magliocchetti, M.; Paris, D.; Cusano, F.; Marchi, F.; Intema, Hubertus; Miley, G. (2018)We report the discovery of the most distant radio galaxy to date, TGSS J1530+1049 at a redshift of z = 5.72, close to the presumed end of the Epoch of Reionization. The radio galaxy was selected from the TGSS ADR1 survey ...