Fermi/GBM 2019 and 2020 bursts of SGR J1935+2154 Virtual Observatory Resource

Authors
  1. Lin L.
  2. Gogus E.
  3. Roberts O.J.
  4. Baring M.G.
  5. Kouveliotou C.
  6. Kaneko Y.,van der Horst A.J.
  7. Younes G.
  8. Published by
    CDS
Abstract

We present temporal and time-integrated spectral analyses of 148 bursts from the latest activation of SGR J1935+2154, observed with the Fermi/Gamma-ray Burst Monitor from 2019-October-4 through 2020-May-20, excluding an ~130s segment with a very high burst density on 2020-April-27. The 148 bursts presented here are slightly longer and softer than bursts from earlier activations of SGR J1935+2154, as well as from other magnetars. The long-term spectral evolution trend is interpreted as being associated with an increase in the average plasma loading of the magnetosphere during bursts. We also find a trend of increased burst activity from SGR J1935+2154 since its discovery in 2014. Finally, we find no association of typical radio bursts with X-ray bursts from the source. This contrasts the association of FRB 200428 with an SGR J1935+2154 X-ray burst, which is to-date unique among the magnetar population.

Keywords
  1. pulsars
  2. gamma-ray-astronomy
Bibliographic source Bibcode
2020ApJ...902L..43L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/902/L43
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/902/L43
Document Object Identifer DOI
doi:10.26093/cds/vizier.19029043

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http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/902/L43
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/902/L43
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/902/L43
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History

2022-05-16T08:01:46Z
Resource record created
2022-05-16T08:01:46Z
Created
2022-06-13T11:38:13Z
Updated

Contact

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CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
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cds-question@unistra.fr