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.…
Verfasserangaben: | Ana González-Galán, Lida OskinovaORCiDGND, Sergei B. PopovORCiD, F. Haberl, M. Kühnel, John S. GallagherORCiDGND, Matthew SchurchORCiD, Martín A. GuerreroORCiD |
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DOI: | https://doi.org/10.1093/mnras/stx3127 |
ISSN: | 0035-8711 |
ISSN: | 1365-2966 |
Titel des übergeordneten Werks (Englisch): | Monthly notices of the Royal Astronomical Society |
Verlag: | Oxford University Press |
Verlagsort: | Oxford |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Datum der Erstveröffentlichung: | 06.12.2017 |
Erscheinungsjahr: | 2018 |
Datum der Freischaltung: | 03.01.2022 |
Freies Schlagwort / Tag: | X-rays: binaries; galaxies: individual: Small Magellanic Cloud; pulsars: individual: SXP 1062; stars: neutron |
Band: | 475 |
Ausgabe: | 2 |
Seitenanzahl: | 13 |
Erste Seite: | 2809 |
Letzte Seite: | 2821 |
Fördernde 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 |
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Peer Review: | Referiert |
Publikationsweg: | Open Access / Green Open-Access |