The potential for detecting gamma-ray burst afterglows from population III stars with the next generation of infrared telescopes
MetadataShow full item record
We investigate the detectability of a proposed population of gamma-ray bursts (GRBs) from the collapse of Population III (Pop III) stars. The James Webb Space Telescope (JWST) and Space Infrared Telescope for Cosmology and Astrophysics (SPICA) will be able to observe the late time infrared afterglows. We have developed a new method to calculate their detectability, which takes into account the fundamental initial mass function and formation rates of Pop III stars, from which we find the temporal variability of the afterglows and ultimately the length of time JWST and SPICA can detect them. In the range of plausible Pop III GRB parameters, the afterglows are always detectable by these instruments during the isotropic emission, for a minimum of 55 days and a maximum of 3.7 yr. The average number of detectable afterglows will be 2.96× 10–5 per SPICA field of view (FOV) and 2.78× 10–6 per JWST FOV. These are lower limits, using a pessimistic estimate of Pop III star formation. An optimal observing strategy with SPICA could identify a candidate orphan afterglow in ~1.3 yr, with a 90% probability of confirmation with further detailed observations. A beamed GRB will align with the FOV of the planned GRB detector Energetic X-ray Imaging Survey Telescope once every 9 yr. Pop III GRBs will be more easily detected by their isotropic emissions (i.e., orphan afterglows) rather than by their prompt emissions.
Copyright © 2013- American Astronomical Society
Showing items related by title, author, creator and subject.
Burlon, D.; Murphy, T.; Ghirlanda, G.; Hancock, Paul; Parry, R.; Salvaterra, R. (2016)Current models suggest gamma-ray bursts could be used as a way of probing Population-III stars - the first stars in the early Universe. In this paper, we use numerical simulations to demonstrate that late-time radio ...
The needle in the 100 deg2 haystack: Uncovering afterglows of Fermi GRBs with the Palomar Transient FactorySinger, L.; Kasliwal, M.; Cenko, S.; Perley, D.; Anderson, Gemma; Anupama, G.; Arcavi, I.; Bhalerao, V.; Bue, B.; Cao, Y.; Connaughton, V.; Corsi, A.; Cucchiara, A.; Fender, R.; Fox, D.; Gehrels, N.; Goldstein, A.; Gorosabel, J.; Horesh, A.; Hurley, K.; Johansson, J.; Kann, D.; Kouveliotou, C.; Huang, K.; Kulkarni, S.; Masci, F.; Nugent, P.; Rau, A.; Rebbapragada, U.; Staley, T.; Svinkin, D.; Thöne, C.; Postigo, A.; Urata, Y.; Weinstein, A. (2015)The Fermi Gamma-ray Space Telescope has greatly expanded the number and energy window of observations of gamma-ray bursts (GRBs). However, the coarse localizations of tens to a hundred square degrees provided by the Fermi ...
van der Horst, A.; Levan, A.; Pooley, G.; Wiersema, K.; Kruhler, T.; Perley, D.; Starling, R.; Curran, Peter; Tanvir, N.; Wijers, R.; Strom, R.; Kouveliotou, C.; Hartoog, O.; Xu, D.; Fynbo, J.; Jakobsson, P. (2015)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 ...