SIMBAD references

2010ApJ...723.1799R - Astrophys. J., 723, 1799-1805 (2010/November-2)

Chandra grating spectroscopy of the Be/X-ray binary 1A 0535+262.

REYNOLDS M.T. and MILLER J.M.

Abstract (from CDS):

We present Chandra HETGS spectroscopy of the Be/X-ray binary 1A 0535+262 obtained during the 2009/2010 giant outburst. These are the first CCD grating spectra of this type of system during a giant outburst. Our spectra reveal a number of lines including a narrow Fe Kα emission line with an FWHM of ∼5000 km/s. For the first time, we detect the presence of a highly ionized outflow in a Be/X-ray binary. Assuming that the line is He-like Fe XXV, fits with a simple Gaussian imply an outflow velocity of ∼1500 km/s. However, self-consistent photoionization modeling with XSTAR suggests that Fe XXIII-XXIV must also contribute. In this case, an outflow velocity of ∼3000 km/s is implied. These results are discussed in the context of accretion flow in Be-star, neutron star, and black hole X-ray binaries.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - stars: neutron - techniques: spectroscopic - X-rays: binaries - X-rays: individual: 1A 0535+262

Simbad objects: 15

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