A multiwavelength study of SXP 1062, the long-period X-ray pulsar associated with a supernova remnant
- SXP 1062 is a Be X-ray binary (BeXB) located in the Small Magellanic Cloud. It hosts a long-period X-ray pulsar and is likely associated with the supernova remnant MCSNR J0127−7332. In this work we present a multiwavelength view on SXP 1062 in different luminosity regimes. We consider monitoring campaigns in optical (OGLE survey) and X-ray (Swift telescope). During these campaigns a tight coincidence of X-ray and optical outbursts is observed. We interpret this as typical Type I outbursts as often detected in BeXBs at periastron passage of the neutron star (NS). To study different X-ray luminosity regimes in depth, during the source quiescence we observed it with XMM–Newton while Chandra observations followed an X-ray outburst. Nearly simultaneously with Chandra observations in X-rays, in optical the RSS/SALT telescope obtained spectra of SXP 1062. On the basis of our multiwavelength campaign we propose a simple scenario where the disc of the Be star is observed face-on, while the orbit of the NS is inclined with respect to the disc.SXP 1062 is a Be X-ray binary (BeXB) located in the Small Magellanic Cloud. It hosts a long-period X-ray pulsar and is likely associated with the supernova remnant MCSNR J0127−7332. In this work we present a multiwavelength view on SXP 1062 in different luminosity regimes. We consider monitoring campaigns in optical (OGLE survey) and X-ray (Swift telescope). During these campaigns a tight coincidence of X-ray and optical outbursts is observed. We interpret this as typical Type I outbursts as often detected in BeXBs at periastron passage of the neutron star (NS). To study different X-ray luminosity regimes in depth, during the source quiescence we observed it with XMM–Newton while Chandra observations followed an X-ray outburst. Nearly simultaneously with Chandra observations in X-rays, in optical the RSS/SALT telescope obtained spectra of SXP 1062. On the basis of our multiwavelength campaign we propose a simple scenario where the disc of the Be star is observed face-on, while the orbit of the NS is inclined with respect to the disc. According to the model of quasi-spherical settling accretion our estimation of the magnetic field of the pulsar in SXP 1062 does not require an extremely strong magnetic field at the present time.…
Author details: | Ana González-Galán, Lidia M. OskinovaORCiDGND, Sergei B. PopovORCiD, F. Haberl, M. Kühnel, John S. GallagherORCiDGND, Matthew SchurchORCiD, Martín A. GuerreroORCiD |
---|---|
DOI: | https://doi.org/10.1093/mnras/stx3127 |
ISSN: | 0035-8711 |
ISSN: | 1365-2966 |
Title of parent work (English): | Monthly notices of the Royal Astronomical Society |
Publisher: | Oxford University Press |
Place of publishing: | Oxford |
Publication type: | Article |
Language: | English |
Date of first publication: | 2017/12/06 |
Publication year: | 2018 |
Release date: | 2022/01/03 |
Tag: | X-rays: binaries; galaxies: individual: Small Magellanic Cloud; pulsars: individual: SXP 1062; stars: neutron |
Volume: | 475 |
Issue: | 2 |
Number of pages: | 13 |
First page: | 2809 |
Last Page: | 2821 |
Funding institution: | Deutsches Zentrum fur Luft und Raumfahrt (DLR)Helmholtz AssociationGerman Aerospace Centre (DLR) [FKZ 50 OR 1404, FKZ 50 OR 1508]; Russian Government Program of Competitive Growth of Kazan Federal University; Bundesministerium fur Wirtschaft und Technologie under Deutsches Zentrum fur Luft- und Raumfahrt [50 OR 1113, 50 OR 1207]; Russian Science FoundationRussian Science Foundation (RSF) [14-12-00146]; Claude Leon Foundation Postdoctoral Fellowship program; National Research Foundation |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Peer review: | Referiert |
Publishing method: | Open Access / Green Open-Access |