17 Yr of Magnetar Bursts Observed with the Fermi Gamma-ray Burst Monitor
Abstract
The Fermi Gamma-ray Burst Monitor (GBM) has been in operation for over 17 years, during which it has observed more than a thousand bursts from soft gamma repeaters (SGRs), also known as magnetars. Serving as a laboratory for extreme physics, magnetars are a sub-family of neutron stars characterized by extreme magnetic field strength, observed through a combination of persistent and short transient emission across the electromagnetic spectrum. We present the comprehensive GBM catalog of SGR short bursts which supersedes the 5-year catalog of Collazzi et al. 2015. The new catalog contains 1254 SGR short bursts observed over 17 years, providing the longest uninterrupted, high-sensitivity all-sky monitoring of magnetar bursts with unprecedented spectral and temporal resolution. Our catalog contains bursts from 17 unique Galactic sources, with major contributions by bursts from SGR J1935+2154 and SGR J1550-5418. We present overall characteristics of these bursts, such as the durations, spectral parameters for various photon models, fluxes, as well as their comparison with recently published catalogs of other missions and the previous GBM magnetar catalog. The machine readable catalog, as well as burst spectra and response files are made publicly available for the community.
Versions
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BibTeX
@misc{godwin2026magnetar,
title = {{17 Yr of Magnetar Bursts Observed with the Fermi Gamma-ray Burst Monitor}},
author = {Matt Godwin and Özge Keskin and Mustafa Demirer and Yi-Jing Yi and Lin Lin and Oliver J. Roberts and Ersin Göğüş and Yuki Kaneko and Michael Briggs and Matthew G. Baring and Eric Burns and David M. Palmer and Boyan A. Hristov and Bagrat Mailyan and Christian Malacaria and Eva Palafox and Chryssa Kouveliotou and Alexander J. van der Horst and Peter Veres and George Younes},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.02809},
eprint = {2609.02809},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.02809},
}
RIS
TY - UNPB
TI - 17 Yr of Magnetar Bursts Observed with the Fermi Gamma-ray Burst Monitor
AU - Matt Godwin
AU - Özge Keskin
AU - Mustafa Demirer
AU - Yi-Jing Yi
AU - Lin Lin
AU - Oliver J. Roberts
AU - Ersin Göğüş
AU - Yuki Kaneko
AU - Michael Briggs
AU - Matthew G. Baring
AU - Eric Burns
AU - David M. Palmer
AU - Boyan A. Hristov
AU - Bagrat Mailyan
AU - Christian Malacaria
AU - Eva Palafox
AU - Chryssa Kouveliotou
AU - Alexander J. van der Horst
AU - Peter Veres
AU - George Younes
PY - 2026
DA - 2026/09/02
PB - arXiv
DO - 10.48550/arxiv.2609.02809
UR - https://arxiv.org/abs/2609.02809
AB - The Fermi Gamma-ray Burst Monitor (GBM) has been in operation for over 17 years, during which it has observed more than a thousand bursts from soft gamma repeaters (SGRs), also known as magnetars. Serving as a laboratory for extreme physics, magnetars are a sub-family of neutron stars characterized by extreme magnetic field strength, observed through a combination of persistent and short transient emission across the electromagnetic spectrum. We present the comprehensive GBM catalog of SGR short bursts which supersedes the 5-year catalog of Collazzi et al. 2015. The new catalog contains 1254 SGR short bursts observed over 17 years, providing the longest uninterrupted, high-sensitivity all-sky monitoring of magnetar bursts with unprecedented spectral and temporal resolution. Our catalog contains bursts from 17 unique Galactic sources, with major contributions by bursts from SGR J1935+2154 and SGR J1550-5418. We present overall characteristics of these bursts, such as the durations, spectral parameters for various photon models, fluxes, as well as their comparison with recently published catalogs of other missions and the previous GBM magnetar catalog. The machine readable catalog, as well as burst spectra and response files are made publicly available for the community.
ER -