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dc.contributor.author Luna, Gerardo Juan Manuel
dc.contributor.author Diaz, M. P.
dc.contributor.author Brickhouse, N. S.
dc.contributor.author Moraes, M.
dc.date.available 2017-06-30T19:10:40Z
dc.date.issued 2012-06
dc.identifier.citation Luna, Gerardo Juan Manuel; Diaz, M. P.; Brickhouse, N. S.; Moraes, M.; XMM-Newton EPIC and OM observation of Nova Centauri 1986 (V842 Cen); Wiley; Monthly Notices of the Royal Astronomical Society; 423; 1; 6-2012; L75-L78
dc.identifier.issn 0035-8711
dc.identifier.uri http://hdl.handle.net/11336/19303
dc.description.abstract We report the results from the temporal and spectral analysis of an XMM–Newton observation of Nova Centauri 1986 (V842 Cen). We detect a period at 3.51 ± 0.4 h in the EPIC data and at 4.0 ± 0.8 h in the Optical Monitor (OM) data. The X-ray spectrum is consistent with the emission from an absorbed thin thermal plasma with a temperature distribution given by an isobaric cooling flow. The maximum temperature of the cooling flow model is kTmax = 43+23 −12 keV. Such a high temperature can be reached in a shocked region and, given the periodicity detected, most likely arises in a magnetically channelled accretion flow characteristic of intermediate polars. The pulsed fraction of the 3.51-h modulation decreases with energy as observed in the X-ray light curves of magnetic cataclysmic variables, possibly due either to occultation of the accretion column by the white dwarf body or phase-dependent to absorption. We do not find the 57-s white dwarf spin period, with a pulse amplitude of 4 mmag, reported by Woudt et al. in either the OM data, which are sensitive to pulse amplitudes 0.03 mag, or the EPIC data, sensitive to pulse fractions p 14 ± 2 per cent.
dc.format application/pdf
dc.language.iso eng
dc.publisher Wiley
dc.rights info:eu-repo/semantics/openAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject novae
dc.subject cataclysmic variables
dc.subject X-rays
dc.subject general
dc.subject.classification Astronomía
dc.subject.classification Ciencias Físicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title XMM-Newton EPIC and OM observation of Nova Centauri 1986 (V842 Cen)
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2017-06-30T17:28:14Z
dc.journal.volume 423
dc.journal.number 1
dc.journal.pagination L75-L78
dc.journal.pais Reino Unido
dc.journal.ciudad Londres
dc.description.fil Fil: Luna, Gerardo Juan Manuel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.description.fil Fil: Diaz, M. P.. Universidade de Sao Paulo; Brasil
dc.description.fil Fil: Brickhouse, N. S.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
dc.description.fil Fil: Moraes, M.. Universidade de Sao Paulo; Brasil
dc.journal.title Monthly Notices of the Royal Astronomical Society
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/j.1745-3933.2012.01260.x
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1203.4804
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1111/j.1745-3933.2012.01260.x


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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)