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Fermi/GBM detects a new outburst from the transient Be/X-ray binary GRO J2058+42

ATel #15877; Peter Jenke (University of Alabama in Huntsville)
on 30 Jan 2023; 16:47 UT
Credential Certification: Peter Jenke (peter.a.jenke@nasa.gov)

Subjects: Gamma Ray, Binary, Neutron Star, Transient, Pulsar

The Fermi/GBM accreting pulsar program began detecting pulsations from the Be X-ray binary GRO J2058+42 on January 24, 2023. The detected frequency, uncorrected for orbit, is 5.1701 +/- 0.0003 mHz. On January 29, the GBM RMS pulsed flux reached 0.60 +/- 0.02 keV cm^-2 s^-1 in the 12-50 keV band. The pulse profile is dominated by a wide, single pulse in the 12-25 keV band and narrows at higher energy (25-50 keV).

GRO J2058+42 Pulsed History