The Super-Eddington Outburst of V4641 Sgr

Details The Super-Eddington Outburst of V4641 Sgr The Super-Eddington Outburst of V4641 Sgr

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002xrb..confe..34r&link_type=abstract

X-ray Binaries in the Chandra and XMM-Newton Era (with an emphasis on Targets of Opportunity), Abstracts of the conference held

Physics

V4641 Sgr

Scientific paper

We would like to draw attention to super-eddington outburst in the binary system V4641 Sgr. We show, that available optical and X-rays data of its outburst in 1999 strongly suggest the of an extended envelope surrounding the source which absorbs X--ray flux and reemits it in the optical and UV. This envelope is likely the result of a near- or super-Eddington rate of mass accretion onto the black hole. The envelope vanishes during subsequent evolution of the source when the apparent luminosity drops well below the Eddington value. Thus this transient source provides us with direct proof of the dramatic change in the character of an accretion flow at the mass accretion rate near or above the critical Eddington value as predicted long ago by the theoretical models. Super-eddington outbursts like that was demonstrate by V4641 Sgr should be extremely interesting for high presicion spectrocopy missions like CHANDRA and XMM - the exanding envelope can provide a lot of lines that could be used for its diagnostics.

Affiliated with

Also associated with

No associations

Rating

The Super-Eddington Outburst of V4641 Sgr 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 The Super-Eddington Outburst of V4641 Sgr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Super-Eddington Outburst of V4641 Sgr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1194567