Spectral and temporal properties of X-ray emission from the ultra-luminous source X-9 in M81

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dc.creatorLa Parola, V.
dc.creatorFabbiano, G.
dc.creatorKim, D. W.
dc.creatorPeres, G.
dc.date2001-02-07
dc.date2001-02-14
dc.date.accessioned2026-07-07T01:57:39Z
dc.date.available2026-07-07T01:57:39Z
dc.descriptionWe have analysed the spectra and the variability of individual X-ray sources in the M-81 field using data from the available ROSAT-PSPC and ROSAT-HRI observations of this nearby spiral galaxy. Here we present the results on the second brightest source in the field (X-9 - Fabbiano, 1988 ApJ 325 544), whose identification and interpretation is still unclear. Our work includes the study of the shape of X-9 from HRI data, the light curve and hardness ratio evolution, and the spectral analysis.
dc.description10 pages, 10 figures. To be published in the proceeding of "X-ray Astronomy 2000" (Mondello (Palermo), September 2000); added aknowledgements
dc.identifierhttps://arxiv.org/abs/astro-ph/0102111
dc.identifierhttp://arxiv.org/abs/astro-ph/0102111
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/2466
dc.subjectAstrophysics
dc.titleSpectral and temporal properties of X-ray emission from the ultra-luminous source X-9 in M81
dc.typetext

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