Computer Science
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe..45j&link_type=abstract
Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo
Computer Science
The Galactic Center
Scientific paper
The Galactic Bulge Survey is a multi-wavelength project aimed at understanding the population of faint X-ray sources towards the Galactic center, though avoiding the Galactic plane itself to avoid the huge extinction and problems caused by crowding. In order to sample the populations sufficiently, the total survey area will be 12square degrees. It consists of 2ks-long Chandra observations and optical Blanco images down to r' = 24. Thus far, the optical data is complete and the Chandra data covering 8.4 square degrees have revealed ˜1350 X-ray sources. For ˜1000 sources we have discovered counterparts on our optical Blanco images. A fraction of ˜20 per cent of these are expected to be interloper stars. The plethora of faint X-ray sources will be compared to detailed population models in order to constrain binary evolution models, especially the common envelope phase, by way of number counts. We are using optical to X-ray flux ratios, optical and X-ray colours and follow-up optical spectroscopy of the detected optical counterparts to classify all sources. We expect to find several quiescent and eclipsing neutron star and black hole LMXBs. These will be used for detailed neutron star and black hole mass measurements. Mass measuremetns are vital for studies of the neutron star equation of state and supernova modelling. Lastly, we will use the distribution of (quiescent) LMXBs to test if LMXB formation requires a kick imparted on the compact object or not as the apparent asymmetry in the Galactic distribution of LMXBs suggests. We will present the first results, and first surprises, of our optical and Chandra observations and the multi-wavelength follow-up of these Chandra X-ray discovered sources.
Bassa Cees
Jonker Peter
Nelemans Gija
No associations
LandOfFree
The Galactic Bulge Survey: finding eclipsing X-ray binaries and understanding the Galactic X-ray binary population 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 Galactic Bulge Survey: finding eclipsing X-ray binaries and understanding the Galactic X-ray binary population, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Galactic Bulge Survey: finding eclipsing X-ray binaries and understanding the Galactic X-ray binary population will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-836576