Search results for "Accretion discs -X-ray"

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Broad-band spectral analysis of the accreting millisecond X-ray pulsar SAX J1748.9-2021

2016

We analyzed a 115 ks XMM-Newton observation and the stacking of 8 days of INTEGRAL observations, taken during the raise of the 2015 outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021. The source showed numerous type-I burst episodes during the XMM-Newton observation, and for this reason we studied separately the persistent and burst epochs. We described the persistent emission with a combination of two soft thermal components, a cold thermal Comptonization component (~2 keV) and an additional hard X-ray emission described by a power-law (photon index ~2.3). The continuum components can be associated with an accretion disc, the neutron star (NS) surface and a thermal Compton…

AccretionBinaries - X-rayAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesIndividualAstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencessymbols.namesakeSettore FIS/05 - Astronomia E AstrofisicaPulsarSAX J1748.9-2021Millisecond pulsarAccretion discs -X-ray0103 physical sciencesAccretion; Accretion discs -X-rays; Binaries - X-rays; Galaxies -X-rays; Individual; SAX J1748.9-2021; Space and Planetary Science; Astronomy and Astrophysics010306 general physics010303 astronomy & astrophysicsAstrophysics::Galaxy AstrophysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)PhysicsSolar massMillisecondAstronomyAstronomy and AstrophysicsAccretion (astrophysics)Neutron starSpace and Planetary ScienceGalaxies -X-rayEddington luminositysymbolsAstrophysics - High Energy Astrophysical PhenomenaX-ray pulsar
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