Computer Science
Scientific paper
Feb 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000noao.prop..300g&link_type=abstract
NOAO Proposal ID #2000A-0300
Computer Science
Scientific paper
We propose to determine the binary parameters of the GM Sgr system using phase resolved spectroscopy and photometry of this system in quiescence. Our proposed observations will allow us to determine the mass function, rotational velocity, and ellipsoidal modulation of the secondary. This will allow us to determine all of the fundamental binary parameters, ie, the masses of the components, the orbital period, the orbital separation, and the inclination. GM Sgr is the second member (after CI Cam) of a new class of extremely bright and rapid x-ray transients discovered with the XTE/ASM, and is the only member of this class in which the binary parameters are easily determined. Both of these new x-ray transients are also bright radio transients. Radio observations of both show outflowing material, which in the case of GM Sgr may be in the form of relativistic jets. These objects are very likely related to the two black-hole/relativistic jet sources (``micro- quasars'') recently discovered in our galaxy, but until the binary parameters are determined this cannot be certain. As the binary parameters have been determined in only one galactic micro-quasar (GRO J1655-40), GM Sgr could be the second micro-quasar in which the mass and geometry of the central engine is understood.
Callanan Paul
Garcia Michaël
McClintock Jeffrey
Remillard Ronald
No associations
LandOfFree
The Unique X-ray Transient GM 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 Unique X-ray Transient GM Sgr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Unique X-ray Transient GM Sgr will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1800766