Fermi GBM GRBs with characteristics similar to GRB 170817A. (arXiv:1901.06158v1 [astro-ph.HE])

Fermi GBM GRBs with characteristics similar to GRB 170817A. (arXiv:1901.06158v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Kienlin_A/0/1/0/all/0/1">A. von Kienlin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Veres_P/0/1/0/all/0/1">P. Veres</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Roberts_O/0/1/0/all/0/1">O. J. Roberts</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hamburg_R/0/1/0/all/0/1">R. Hamburg</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bissaldi_E/0/1/0/all/0/1">E. Bissaldi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Briggs_M/0/1/0/all/0/1">M. S. Briggs</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Burns_E/0/1/0/all/0/1">E. Burns</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Goldstein_A/0/1/0/all/0/1">A. Goldstein</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kocevski_D/0/1/0/all/0/1">D. Kocevski</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Preece_R/0/1/0/all/0/1">R. D. Preece</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wilson_Hodge_C/0/1/0/all/0/1">C. A. Wilson-Hodge</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hui_C/0/1/0/all/0/1">C. M. Hui</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mailyan_B/0/1/0/all/0/1">B. Mailyan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Malacaria_C/0/1/0/all/0/1">C. Malacaria</a>

We present a search for gamma-ray bursts in the Fermi-GBM 10 year catalog
that show similar characteristics to GRB 170817A, the first electromagnetic
counterpart to a GRB identified as a binary neutron star (BNS) merger via
gravitational wave observations. Our search is focused on a non-thermal pulse,
followed by a thermal component, as observed for GRB 170817A. We employ search
methods based on the measured catalog parameters and Bayesian Block analysis.
Our multi-pronged approach, which includes examination of the localization and
spectral properties of the thermal component, yields a total of 13 candidates,
including GRB 170817A and the previously reported similar burst, GRB 150101B.
The similarity of the candidates is likely caused by the same processes that
shaped the gamma-ray signal of GRB 170817A, thus providing evidence of a nearby
sample of short GRBs resulting from BNS merger events. Some of the newly
identfied counterparts were observed by other space telescopes and ground
observatories, but none of them have a measured redshift. We present an
analysis of this sub-sample, and we discuss two models. From uncovering 13
candidates during a time period of ten years we predict that Fermi-GBM will
trigger on-board on about one burst similar to GRB 170817A per year.

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