The Challenge to Large Optical Telescopes from X-ray Astronomy

Details The Challenge to Large Optical Telescopes from X-ray Astronomy The Challenge to Large Optical Telescopes from X-ray Astronomy

2002-10-01

arxiv.org/abs/astro-ph/0210044v1

Astronomy and Astrophysics

Astrophysics

15 pages, 6 figures, Invited review for SPIE conference "Science with 6-10 m Class Telescopes"

Scientific paper

10.1117/12.460951

In the ROSAT era of the mid-1990's, the problems facing deep X-ray surveys could be largely solved with 10 m class telescopes. In the first decade of this new millennium, with X-ray telescopes such as the Chandra X-ray Observatory and XMM-Newton in operation, deep X-ray surveys are challenging 10 m telescopes. For example, in the Chandra Deep Field surveys, approximately 30% of the X-ray sources have optical counterparts fainter than R=25 (I=24). This paper reviews current progress with 6-10 m class telescopes in following up sources discovered in deep X-ray surveys, including results from several X-ray surveys which have depended on telescopes such as Keck, VLT and HET. Topics include the prospects for detecting extreme redshift (z>6) quasars and the first detections of normal and starburst galaxies at cosmologically interesting distances in the X-ray band. X-ray astronomy can significantly bolster the science case for the next generation of large aperture (30-100 m) ground-based telescopes and has already provided targets for these large telescopes through the Chandra and XMM-Newton surveys. The next generation of X-ray telescopes will continue to challenge large optical telescopes; this review concludes with a discussion of prospects from new X-ray missions coming into operation on a 5-30 year timescale.

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