Swift J0525.6+2416 and IGR J04571+4527: Two new hard X-ray-selected magnetic cataclysmic variables identified with XMM-Newton

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dc.contributor.authorBernardini, F.
dc.contributor.authorde Martino, D.
dc.contributor.authorMukai, K.
dc.contributor.authorIsrael, G.
dc.contributor.authorFalanga, M.
dc.contributor.authorRamsay, G.
dc.contributor.authorMasetti, N.
dc.date.accessioned2023-06-20T20:17:59Z
dc.date.available2023-06-20T20:17:59Z
dc.date.issued2015-11
dc.descriptionIndexación: Scopus.es
dc.description.abstractIGR J04571+4527 and Swift J0525.6+2416 are two hard X-ray sources detected in the Swift/BAT and INTEGRAL/IBIS surveys. They were proposed to be magnetic cataclysmic variables of the intermediate polar (IP) type, based on optical spectroscopy. IGR J04571+4527 also showed a 1218 s optical periodicity, suggestive of the rotational period of a white dwarf, further pointing towards an IP classification. We here present detailed X-ray (0.3–10 keV) timing and spectral analysis performed with XMM–Newton, complemented with hard X-ray coverage (15–70 keV) from Swift/BAT. These are the first high-S/N observations in the soft X-ray domain for both sources, allowing us to identify the white dwarf X-ray spin period of Swift J0525.6+2416 (226.28 s), and IGR J04571+4527 (1222.6 s). A model consisting of multitemperature optically thin emission with complex absorption adequately fits the broad-band spectrum of both sources. We estimate a white dwarf mass of about 1.1 and 1.0 M⊙ for IGR J04571+4527 and Swift J0525.6+2416, respectively. The above characteristics allow us to unambiguously classify both sources as IPs, confirming the high incidence of this subclass among hard X-ray emitting cataclysmic variables.es
dc.description.urihttps://academic.oup.com/mnras/article/453/3/3100/1075376?login=true
dc.identifier.citationMonthly Notices of the Royal Astronomical Society. Volume 453, Issue 3, Pages 3100 - 3106. 1 November 2015es
dc.identifier.doi10.1093/mnras/stv1673
dc.identifier.issn0035-8711
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/50853
dc.language.isoenes
dc.publisherOxford University Presses
dc.rights.licenseAtribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectNovaees
dc.subjectCataclysmic Variableses
dc.subjectWhite Dwarfses
dc.subjectX-rays: individual: IGR J04571+4527 (1RXS J045707.4+452751, as Swift J0457.1+4528)
dc.subjectAs WISE J052522.84+24133333.6)
dc.titleSwift J0525.6+2416 and IGR J04571+4527: Two new hard X-ray-selected magnetic cataclysmic variables identified with XMM-Newtones
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