Expected number of supergiant fast X-ray transients in the Milky Way
Ducci L, Doroshenko V, Romano P, Santangelo A, Sasaki M (2014)
Publication Status: Published
Publication Type: Journal article
Publication year: 2014
Journal
Publisher: EDP SCIENCES S A
Book Volume: 568
DOI: 10.1051/0004-6361/201424215
Abstract
In the past fifteen years a new generation of X-ray satellites led to the discovery of a subclass of high-mass X-ray binaries (HMXBs) with supergiant companions and a peculiar transient behaviour: supergamt fast X-ray transients (SFXTs), We calculate the expected number of Galactic SFXTs for the first time, using two different statistical approaches and two sets of data based on Swift and INTEGRAL surveys, with the aim to determine how common the SFXT phenomenon really is. We find that the expected number of SFXTs in the Galaxy is approximate to 37(-22)(+53), Which shows that SEX Is constitute a large portion of X-ray binaries with supergiant companions in the Galaxy. We compare our estimate with the expected number of Galactic HMXBs predicted from observations and evolutionary models and discuss the implications for the nature of SFXTs.
Authors with CRIS profile
Involved external institutions
Eberhard Karls Universität Tübingen
Germany (DE)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
Italy (IT)
Germany (DE)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
Italy (IT)
How to cite
APA:
Ducci, L., Doroshenko, V., Romano, P., Santangelo, A., & Sasaki, M. (2014). Expected number of supergiant fast X-ray transients in the Milky Way. Astronomy & Astrophysics, 568. https://dx.doi.org/10.1051/0004-6361/201424215
MLA:
Ducci, L., et al. "Expected number of supergiant fast X-ray transients in the Milky Way." Astronomy & Astrophysics 568 (2014).
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