SIMBAD references

2021ApJ...909..154T - Astrophys. J., 909, 154-154 (2021/March-2)

X-ray pulsar XTE J1858+034 discovery of the cyclotron line and the revised optical identification.

TSYGANKOV S.S., LUTOVINOV A.A., MOLKOV S.V., DJUPVIK A.A., KARASEV D.I., DOROSHENKO V., MUSHTUKOV A.A., MALACARIA C., KRETSCHMAR P. and POUTANEN J.

Abstract (from CDS):

We present the results of a detailed investigation of the poorly studied X-ray pulsar (XRP) XTE J1858+034 based on the data obtained with the NuSTAR observatory during the outburst of the source in 2019. The spectral analysis resulted in the discovery of a cyclotron absorption feature in the source spectrum at ∼48 keV in both the pulse phase-averaged and resolved spectra. Accurate X-ray localization of the source using the NuSTAR and Chandra observatories allowed us to accurately determine the position of the X-ray source and identify the optical companion of the pulsar. The analysis of the counterpart properties suggested that the system is likely a symbiotic binary hosting an XRP and a late-type companion star of the K-M classes rather than a Be X-ray binary as previously suggested.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Accretion - Stellar accretion disks - Magnetic fields - Binary pulsars - Neutron stars - High mass x-ray binary stars - X-ray binary stars

Simbad objects: 1

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