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X-Ray Pulsar XTE J1...
X-Ray Pulsar XTE J1858+034 : Discovery of the Cyclotron Line and the Revised Optical Identification
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Tsygankov, Sergey S. (author)
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Lutovinov, Alexander A. (author)
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Molkov, Sergey V. (author)
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Djupvik, Anlaug A. (author)
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Karasev, Dmitri I. (author)
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Doroshenko, Victor (author)
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Mushtukov, Alexander A. (author)
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Malacaria, Christian (author)
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Kretschmar, Peter (author)
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- Poutanen, Juri (author)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Nordiska institutet för teoretisk fysik (Nordita),University of Turku, Finland; Space Research Institute of the Russian Academy of Sciences, Russia
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(creator_code:org_t)
- 2021-03-15
- 2021
- English.
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In: Astrophysical Journal. - : IOP PUBLISHING LTD. - 0004-637X .- 1538-4357. ; 909:2
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https://urn.kb.se/re...
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Abstract
Subject headings
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- 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 similar to 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Accretion
- Stellar accretion disks
- Magnetic fields
- Binary pulsars
- Neutron stars
- High mass x-ray binary stars
- X-ray binary stars
Publication and Content Type
- ref (subject category)
- art (subject category)
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Tsygankov, Serge ...
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Lutovinov, Alexa ...
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Molkov, Sergey V ...
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Djupvik, Anlaug ...
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Karasev, Dmitri ...
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Doroshenko, Vict ...
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show more...
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Mushtukov, Alexa ...
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Malacaria, Chris ...
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Kretschmar, Pete ...
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Poutanen, Juri
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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Astrophysical Jo ...
- By the university
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Royal Institute of Technology
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Stockholm University