Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.8008g&link_type=abstract
American Astronomical Society, 195th AAS Meeting, #80.08; Bulletin of the American Astronomical Society, Vol. 31, p.1493
Astronomy and Astrophysics
Astronomy
3
Scientific paper
With the successful launch and operation of NASA's Chandra X-ray Observatory (CXO, formerly AXAF), the Chandra Multiwavelength Project (ChaMP) will study Chandra serendipitous X-ray sources from radio to X-rays, with an optical survey as its backbone. Important scientific advances, many unanticipated, have resulted from optical identification of serendipitous X-ray sources. Great challenges have faced such campaigns because of the large ( 1') X-ray positional uncertainties. By contrast, Chandra's 1" astrometry and tight PSF (<= 1" on axis, 10" even 8' off-axis) enable unambiguous identification of the optical counterparts in images well-matched in depth. Although ChaMP optical followup will exclude several targeted deep fields, thanks to Chandra's PSF and its extremely low background, sources as faint as f(0.2-8keV) 3*E-16 erg cm-2 s-1 will be detected - about 20 times as deep as current wide-area surveys. At the same time, we expect ChaMP to cover larger areas ( 7 degrees2 per year) than current deep surveys. We describe the scientific motivation and observing strategies for ChaMP optical followup of selected high galactic latitude Chandra fields. The project, nominally lasting about 5 years, should identify about 2000 high galactic latitude serendipitous X-ray sources per year, of which as many as 80% may be AGN. The broader (0.2-8keV) spectral range of Chandra will detect a much larger fraction of obscured AGN than in previous large-scale X-ray-selected samples. Enhanced detection of extended X-ray emission should yield a sample of over 200 distant clusters of galaxies in the critical redshift range z 0.2-1, which will be used for studies of cosmology and cluster evolution.
ChaMP Collaboration
Foltz Craig B.
Green Paul J.
Hooper Eric J.
Mathur Savita
No associations
LandOfFree
Optical Followup of Serendipitous Sources in Chandra Fields 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 Optical Followup of Serendipitous Sources in Chandra Fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical Followup of Serendipitous Sources in Chandra Fields will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1744390