Physics
Scientific paper
Feb 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.0105d&link_type=abstract
American Astronomical Society, HEAD meeting #11, #1.05; Bulletin of the American Astronomical Society, Vol. 41, p.652
Physics
Scientific paper
We present the latest results from our studies of a subclass of transient X-ray sources, whose members display anomalously low peak luminosities of 1E34-1E36 erg/s (2-10 keV). A large fraction of these underluminous tranients is expected to harbor accreting neutron stars and black holes. However, some of these systems appear to have such anomalously low mass-accretion rates, that it might be challenging to explain their existence in terms of regular evolution paths and more exotic scenarios such as hydrogen-poor companions or brown dwarf or planetary donors might have to be invoked.
We study the outburst behavior of several transient systems near the Galactic Center with sensitive X-ray instruments like Chandra, XMM-Newton and Swift. We find a wide range in outburst durations and duty cycles and estimate long-term time-average accretion rates in the range of 1E-14 - 1E-11 Msun/yr for these systems. The underluminous X-ray transients probe parameter regimes previously unknown for compact objects and studying these systems in detail can provide an important contribution to our understanding of compact objects, accretion physics and binary evolution models.
Degenaar Nathalie
Wijnands Rudy
No associations
LandOfFree
Underluminous X-ray Transients Near The Galactic Center 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 Underluminous X-ray Transients Near The Galactic Center, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Underluminous X-ray Transients Near The Galactic Center will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1091743