A Bayesian Fermi-GBM short GRB spectral catalogue

Abstract

With the confirmed detection of short gamma-ray burst (GRB) in association with a gravitational wave signal, we present the first fully Bayesian Fermi-GBM short GRB spectral catalog. Both peak flux and time-resolved spectral results are presented. Additionally, we release the full posterior distributions and reduced data from our sample. Following our previous study, we introduce three variability classes based of the observed light curve structure.

Half-a-century of gamma-ray astrophysics at the Max-Planck Institute for Extraterrestrial Physics

“…These findings, combined with multi-frequency model fitting, support the earlier hypothesis that massive stars and their descendent supernovae are the dominant sources of interstellar 26 Al as observed by COMPTEL (see more details about its origin from high spectral resolution measurements with the INTEGRAL mission in Sect. 3 "new astronomy", including the history of the 26 Al line emission observations and the status of the theoretical understanding is given in Prantzos & Diehl [125].…”

“…Detailed imaging spectroscopy thus offers an unprecedented opportunity to identify these nucleosynthesis sites. COMPTEL's first-ever all-sky map in the light of a radioactivity gamma-ray line provided information on the spatial distribution of 26 Al production in the Milky Way during the last million years. From Fig.…”

“…This correlation initiated first detailed studies on the basis of stellar-group population synthesis evolution models, among others in combination with 1-dimensional models of expanding superbubbles around the OB associations [124], or the isotope production in star-forming regions to obtain the light curves of γ-ray line emission due to radioactive decay of 26 Al, 60 Fe and the e − e + annihilation line [31]. These findings, combined with multi-frequency model fitting, support the earlier hypothesis that massive stars and their descendent supernovae are the dominant sources of interstellar 26 Al as observed by COMPTEL (see more details about its origin from high spectral resolution measurements with the INTEGRAL mission in Sect. 3 "new astronomy", including the history of the 26 Al line emission observations and the status of the theoretical understanding is given in Prantzos & Diehl [125].…”

“…In the 1977 and 1979 flights, the anticentre with the Crab nebula and its pulsar were studied [52]. In the 1982 flight (which lasted only 4.5 h due to a balloon failure after that time) two important results were obtained: firstly, gamma-ray emission from the radio galaxy Cen-A could be observed above 700 keV [164], and secondly, an image in the light of the 1.809 MeV gamma-ray line from 26 Al could be derived, which had its maximum brightness at l= 1. • 4, b = -3.…”

“…In addition, GRS also made important studies of cosmic gamma-ray lines, e.g. of the 511 keV annihilation line and the 1.809 MeV 26 Al line, and, in particular, it succeeded in an impressive detection of nucleosynthesis lines from 56 Co decay from the SN 1987a in the Large Magellanic Cloud. Likely the most curious discovery was a new type of transient in 1980 ( [129], and references therein), the explanation of which was embargoed for nearly 10 years for US national security: namely its man-made origin, caused by the near-encounters (of order 600 km) of the nuclear reactors believed to be carried by the Soviet Radar Ocean Reconnaissance Satellites (ROR-SATs).…”