Search results for "Accretion accretion disk"

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A possible cyclotron resonance scattering feature near 0.7 keV in X1822-371

2015

We analyse all available X-ray observations of X1822-371 made with XMM-Newton, Chandra, Suzaku and INTEGRAL satellites. The observations were not simultaneous. The Suzaku and INTEGRAL broad band energy coverage allows us to constrain the spectral shape of the continuum emission well. We use the model already proposed for this source, consisting of a Comptonised component absorbed by interstellar matter and partially absorbed by local neutral matter, and we added a Gaussian feature in absorption at $\sim 0.7$ keV. This addition significantly improves the fit and flattens the residuals between 0.6 and 0.8 keV. We interpret the Gaussian feature in absorption as a cyclotron resonant scattering …

Astrophysics::High Energy Astrophysical PhenomenaCyclotron resonanceFOS: Physical sciencesAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsX-rays: generalLuminositysymbols.namesakeSettore FIS/05 - Astronomia E AstrofisicaAccretion accretion diskAstrophysics::Solar and Stellar AstrophysicsAbsorption (logic)Continuum (set theory)Astrophysics::Galaxy AstrophysicsPhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Stars: magnetic fieldStars: individual: X1822-371Astronomy and AstrophysicsRadiusAstronomy and AstrophysicX-rays: binarieInterstellar mediumNeutron starSpace and Planetary ScienceEddington luminositysymbolsAstrophysics::Earth and Planetary AstrophysicsAstrophysics - High Energy Astrophysical Phenomena
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