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High-resolution x-ray telescopes | | S.L. O'Dell
; R.J. Brissenden
; W.N. Davis
; R.F. Elsner
; M. Elvis
; M. Freeman
; T. Gaetz
; P. Gorenstein
; M.V. Gubarev
; D. Jerius
; M. Juda
; J.J. Kolodziejczak
; S. Murray
; R.Petre
; W. Podgorski
; B.D. Ramsey
; P.B. Reid
; T. Saha
; D.A.Schwartz
; S. Trolier-McKinstry
; M.C. Weisskopf
; R.H.T. Wilke
; S. Wolk
; W.W. Zhang
; | | Date: |
23 Oct 2010 | | Abstract: | High-energy astrophysics is a relatively young scientific field, made
possible by space-borne telescopes. During the half-century history of x-ray
astronomy, the sensitivity of focusing x-ray telescopes-through finer angular
resolution and increased effective area-has improved by a factor of a 100
million. This technological advance has enabled numerous exciting discoveries
and increasingly detailed study of the high-energy universe-including accreting
(stellar-mass and super-massive) black holes, accreting and isolated neutron
stars, pulsar-wind nebulae, shocked plasma in supernova remnants, and hot
thermal plasma in clusters of galaxies. As the largest structures in the
universe, galaxy clusters constitute a unique laboratory for measuring the
gravitational effects of dark matter and of dark energy. Here, we review the
history of high-resolution x-ray telescopes and highlight some of the
scientific results enabled by these telescopes. Next, we describe the planned
next-generation x-ray-astronomy facility-the International X-ray Observatory
(IXO). We conclude with an overview of a concept for the next next-generation
facility-Generation X. The scientific objectives of such a mission will require
very large areas (about 10000 m2) of highly-nested lightweight
grazing-incidence mirrors with exceptional (about 0.1-arcsecond) angular
resolution. Achieving this angular resolution with lightweight mirrors will
likely require on-orbit adjustment of alignment and figure. | | Source: | arXiv, 1010.4892 | | Services: | Forum | Review | PDF | Favorites | |
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