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A Focusing Collector for Long Wavelength X-Ray Astronomy*

Published online by Cambridge University Press:  14 August 2015

D. J. Yentis ,
J. R. P. Angel ,
D. Mitchell ,
R. Novick  and
P. Vanden Bout
D. J. Yentis
Affiliation:
Columbia Astrophysics Laboratory, Columbia University, New York, N.Y., U.S.A.
J. R. P. Angel
Affiliation:
Columbia Astrophysics Laboratory, Columbia University, New York, N.Y., U.S.A.
D. Mitchell
Affiliation:
Columbia Astrophysics Laboratory, Columbia University, New York, N.Y., U.S.A.
R. Novick
Affiliation:
Columbia Astrophysics Laboratory, Columbia University, New York, N.Y., U.S.A.
P. Vanden Bout
Affiliation:
Columbia Astrophysics Laboratory, Columbia University, New York, N.Y., U.S.A.

Extract

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One of the outstanding problems in X-ray astronomy is the detection and understanding of a number of important phenomena that are expected at photon energies in the range from 100 eV to 1000 eV. One expects to be able to detect interstellar matter in both absorption and emission. It is of critical importance to cosmology to determine the spectrum, isotropy and intensity of extragalactic radiation in this energy region. It is also expected that a large number of discrete sources with temperatures in the range from 105K to 106K will be detected. Such sources could result from neutron stars that are cooling or from the accretion of interstellar matter onto condensed objects. Matter falling into ‘black holes’ may be heated sufficiently to be detectable at long X-ray wavelengths. Extended objects, such as the Cygnus Loop and the Magellanic clouds, are known to be luminous at low X-ray energies (Grader et al., 1970; Gorenstein, 1970); other such objects are almost certainly present. There may be local sources of diffuse radiation. Finally, it should be possible to detect X-ray zodiacal light.

Type
Part II: X-ray Astonomy
Information
Symposium - International Astronomical Union , Volume 41: New Technique in Space Astronomy , 1971 , pp. 145 - 158
Copyright
Copyright © Reidel 1971 

References

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