Search results for "individual : X 1624-490"

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Chandra observation of the Big Dipper X 1624–490

2006

We present the results of a 73 ks long Chandra observation of the dipping source X 1624-490. During the observation a complex dip lasting 4 hours is observed. We analyse the persistent emission detecting, for the first time in the 1st-order spectra of X 1624-490, an absorption line associated to \ion{Ca}{xx}. We confirm the presence of the \ion{Fe}{xxv} K$_\alpha$ and \ion{Fe}{xxvi} K$_\alpha$ absorption lines with a larger accuracy with respect to a previous XMM observation. Assuming that the line widths are due to a bulk motion or a turbulence associated to the coronal activity, we estimate that the lines have been produced in a photoionized absorber between the coronal radius and the out…

Physicsstars : individual : X 1624-490Absorption spectroscopyAstrophysics::High Energy Astrophysical PhenomenaAstrophysics (astro-ph)FOS: Physical sciencesAstronomy and AstrophysicsRadiusAstrophysicsAstrophysicsaccretion accretion diskstars : neutronBulk motionSpectral lineIonAccretion discSpace and Planetary ScienceX-rays : starX-rays : binarieindividual : X 1624-490; stars : neutron; X-rays : stars; X-rays : binaries; X-rays : general [accretion accretion disks; stars]X-rays : generalLine (formation)Astronomy & Astrophysics
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