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A Bayesian Fermi-GBM short GRB spectral catalogue

MPS-Authors
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Burgess,  J. Michael
High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;

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Greiner,  Jochen
High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;

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Bégué,  Damien
High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;

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Berlato,  Francesco
High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;

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Citation

Burgess, J. M., Greiner, J., Bégué, D., & Berlato, F. (2019). A Bayesian Fermi-GBM short GRB spectral catalogue. Monthly Notices of the Royal Astronomical Society, 490(1), 927-946. doi:10.1093/mnras/stz2589.


Cite as: https://hdl.handle.net/21.11116/0000-0005-5DC9-1
Abstract
Inspired by the confirmed detection of a short gamma-ray burst (GRB) in association with a gravitational wave signal, we present the first Bayesian Fermi-Gamma-ray Burst Monitor (GBM) short GRB spectral catalogue. Both peak flux and time-resolved spectral results are presented. Data are analysed with the proper Poisson likelihood allowing us to provide statistically reliable results even for spectra with few counts. All fits are validated with posterior predictive checks. We find that nearly all spectra can be modelled with a cut-off power law. Additionally, we release the full posterior distributions and reduced data from our sample. Following our previous study, we introduce three variability classes based on the observed light-curve structure.