Identification of a Local Sample of Gamma-Ray Bursts Consistent with a Magnetar Giant Flare Origin
| dc.contributor.author | Burns, E. | |
| dc.contributor.author | Svinkin, D. | |
| dc.contributor.author | Hurley, K. | |
| dc.contributor.author | Wadiasingh, Z. | |
| dc.contributor.author | Negro, Michela | |
| dc.contributor.author | et al | |
| dc.date | 2021-01-28 | |
| dc.date.accessioned | 2021-01-27T17:48:52Z | |
| dc.date.available | 2021-01-27T17:48:52Z | |
| dc.description | Authors: E. Burns, D. Svinkin, K. Hurley, Z. Wadiasingh, M. Negro, G. Younes, R. Hamburg, A. Ridnaia, D. Cook, S. B. Cenko, R. Aloisi, G. Ashton, M. Baring, M. S. Briggs, N. Christensen, D. Frederiks, A. Goldstein, C. M. Hui, D. L. Kaplan, M. M. Kasliwal, D. Kocevski, O. J. Roberts, V. Savchenko, A. Tohuvavohu, P. Veres, and C. A. Wilson-Hodge | |
| dc.description.abstract | Cosmological Gamma-Ray Bursts (GRBs) are known to arise from distinct progenitor channels: short GRBs mostly from neutron star mergers and long GRBs from a rare type of core-collapse supernova (CCSN) called collapsars. Highly magnetized neutron stars called magnetars also generate energetic, short-duration gamma-ray transients called Magnetar Giant Flares (MGFs). Three have been observed from the Milky Way and its satellite galaxies and they have long been suspected to contribute a third class of extragalactic GRBs. We report the unambiguous identification of a distinct population of 4 local (<5 Mpc) short GRBs, adding GRB 070222 to previously discussed events. While identified solely based on alignment to nearby star-forming galaxies, their rise time and isotropic energy release are independently inconsistent with the larger short GRB population at >99.9% confidence. These properties, the host galaxies, and non-detection in gravitational waves all point to an extragalactic MGF origin. Despite the small sample, the inferred volumetric rates for events above 4×10⁴⁴ erg of RMGF=3.8⁺⁴·⁰₋₃.₁×10⁵ Gpc⁻⁵ yr⁻¹ place MGFs as the dominant gamma-ray transient detected from extragalactic sources. As previously suggested, these rates imply that some magnetars produce multiple MGFs, providing a source of repeating GRBs. The rates and host galaxies favor common CCSN as key progenitors of magnetars. | en_US |
| dc.description.sponsorship | N. Christensen is supported by the NSF grant PHY1806990. The Fermi GBM Collaboration acknowledges the support of NASA in the United States under grant NNM11AA01A and of DRL in Germany. The CLU galaxy list made use of the NASA/IPAC Extragalactic Database (NED) which is funded by the National Aeronautics and Space Administration and operated by the California Institute of Technology, and was supported by the GROWTH (Global Relay of Observatories Watching Transients Happen) project funded by the National Science Foundation under PIRE Grant No 1545949. | en_US |
| dc.description.uri | https://iopscience.iop.org/article/10.3847/2041-8213/abd8c8 | en_US |
| dc.format.extent | 10 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2hixj-zbbq | |
| dc.identifier.citation | Burns, E. et al. "Identification of a Local Sample of Gamma-Ray Bursts Consistent with a Magnetar Giant Flare Origin." The Astrophysical Journal Letters 907, no. 2 (28 January 2021). https://doi.org/10.3847/2041-8213/abd8c8 | en_US |
| dc.identifier.uri | http://hdl.handle.net/11603/20631 | |
| dc.identifier.uri | https://doi.org/10.3847/2041-8213/abd8c8 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | AAS | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Center for Space Sciences and Technology | |
| dc.relation.ispartof | UMBC Faculty Collection | |
| dc.relation.ispartof | UMBC Physics Department | |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | |
| dc.rights | Public Domain | |
| dc.rights | https://creativecommons.org/publicdomain/mark/1.0/ | |
| dc.title | Identification of a Local Sample of Gamma-Ray Bursts Consistent with a Magnetar Giant Flare Origin | en_US |
| dc.type | Text | en_US |