6533b86dfe1ef96bd12cab9c
RESEARCH PRODUCT
X-ray spectroscopy of MXB 1728-34 with XMM-Newton
N. R. RobbaLaura BarraganElise EgronAntonino D'aiThomas DauserAlessandro PapittoR. IariaTiziana Di SalvoAlessandro RiggioJoern WilmsLuciano Burderisubject
High Energy Astrophysical Phenomena (astro-ph.HE)PhysicsX-ray spectroscopy010308 nuclear & particles physicsAstrophysics::High Energy Astrophysical PhenomenaBolometerFOS: Physical sciencesBinary numberAstronomy and AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsformation line: identification stars: neutron stars: individual: MXB 1728 34 X-rays: binaries X-rays: general [line]01 natural scienceslaw.inventionSettore FIS/05 - Astronomia E AstrofisicaAccretion discSpace and Planetary Sciencelaw0103 physical sciencesEmission spectrumAstrophysics - High Energy Astrophysical PhenomenaLow Mass010303 astronomy & astrophysicsAstrophysics::Galaxy Astrophysicsline: formation line: identification stars: neutron stars: individual: MXB 1728 34 X-rays: binaries X-rays: generaldescription
We have analysed an XMM-Newton observation of the low mass X-ray binary and atoll source MXB 1728-34. The source was in a low luminosity state during the XMM-Newton observation, corresponding to a bolometric X-ray luminosity of 5*10E36 d^2 erg/s, where d is the distance in units of 5.1 kpc. The 1-11 keV X-ray spectrum of the source, obtained combining data from all the five instruments on-board XMM-Newton, is well fitted by a Comptonized continuum. Evident residuals are present at 6-7 keV which are ascribed to the presence of a broad iron emission line. This feature can be equally well fitted by a relativistically smeared line or by a self-consistent, relativistically smeared, reflection model. Under the hypothesis that the iron line is produced by reflection from the inner accretion disk, we can infer important information on the physical parameters of the system, such as the inner disk radius, Rin = 25-100 km, and the inclination of the system, 44{\deg} < i < 60{\deg}.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-04-04 |