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

DOI

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.

Identifier
DOI http://doi.org/10.26093/cds/vizier.19029043
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJ/902/L43
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/902/L43
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/902/L43
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/ApJ/902/L43
Provenance
Creator Lin L.; Gogus E.; Roberts O.J.; Baring M.G.; Kouveliotou C.; Kaneko Y.,van der Horst A.J.; Younes G.
Publisher CDS
Publication Year 2022
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysical Processes; Astrophysics and Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy