Spectroscopy of the Resurgent Ultracompact Binary 4U 1626-67

Details Spectroscopy of the Resurgent Ultracompact Binary 4U 1626-67 Spectroscopy of the Resurgent Ultracompact Binary 4U 1626-67

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2801c&link_type=abstract

Chandra proposal ID #11400336

Physics

Scientific paper

Chandra/XMM spectroscopy of this X-ray pulsar finds Doppler pairs of broad Ne and O emission lines, the first detection of a Keplerian line profiles in the X-ray. Recently, the 30-yr decline in X-ray intensity has reversed, with the source doubling in brightness in the past year along with a significant spectral change. We propose HETGS spectroscopy of this new bright state to use the emission line intensity and profiles to probe the geometry and physical conditions of the accretion flow, and also to constrain the unusual composition of the white dwarf donor. We will also make a first crude attempt to apply Doppler tomography to the strongest lines. These analyses may shed light on the bizarre pulsar torque reversal that accompanied the previous spectral change of the source in 1990.

Affiliated with

Also associated with

No associations

Rating

Spectroscopy of the Resurgent Ultracompact Binary 4U 1626-67 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 Spectroscopy of the Resurgent Ultracompact Binary 4U 1626-67, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopy of the Resurgent Ultracompact Binary 4U 1626-67 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-838652