Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-09-12
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
7 pages, 4 figures, formatted using emulateapj.cls. Accepted for publication in ApJ
Scientific paper
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 K_alpha emission line with a FWHM of ~ 5000 km s^-1. 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^-1. 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^-1 is implied. These results are discussed in the context of the accretion flow in Be-star, neutron star, and black hole X-ray binaries.
Miller John Mcl.
Reynolds Mark T.
No associations
LandOfFree
Chandra grating spectroscopy of the Be/X-ray binary 1A 0535+262 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Chandra grating spectroscopy of the Be/X-ray binary 1A 0535+262, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chandra grating spectroscopy of the Be/X-ray binary 1A 0535+262 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-326630