Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-28T00:34:48.895Z Has data issue: false hasContentIssue false
  • English
  • Français

Objective Grating Soft X-Ray Spectroscopy of Compact Binary X-Ray Sources

Published online by Cambridge University Press:  12 April 2016

S.M. Kahn ,
S.D. Vrtilek ,
L. Chiappetti  and
N.E. White
S.M. Kahn
Affiliation:
Department of Physics, University of California Berkeley, CA 94720
S.D. Vrtilek
Affiliation:
Department of Astronomy, Columbia University New York, NY 10027
L. Chiappetti
Affiliation:
European Space Operations Centre European Space Agency Darmstadt, West Germany
N.E. White
Affiliation:
European Space Operations Centre European Space Agency Darmstadt, West Germany

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The presence of objective transmission gratings on the two recent X-ray telescope experiments, the Einstein and EXOSAT Observatories, has opened up a new avenue of research in X-ray astronomy by enabling us, for the first time, to obtain moderate-to-high resolution spectra of cosmic sources in the soft X-ray band (λ ~ 5–200 Å). Both experiments incorporated gold bar transmission gratings with line densities of 500 1/mm and 1000 1/mm which could be inserted into the X-ray optical path at the exit from a grazing incidence mirror. At short wavelengths, the resolution was determined principally by the spatial resolution of the detector-telescope combination. For Einstein, this was Δλ ~ 0.4 Å for the 1000 1/mm grating and ~ 0.8 Å for the 500 1/mm grating. For EXOSAT, the resolution was somewhat worse: Δλ ~ 1.5 Å for the 1000 1/mm grating, and ~ 3 Å for the 500 1/mm grating. (More complete descriptions of these instruments can be found in Seward et al. 1982 and de Korte et al. 1981.)

Type
Session 3. Non-Solar Astrophysics
Information
International Astronomical Union Colloquium , Volume 86: Eighth International Colloquium on Ultraviolet and X-ray Spectroscopy of Astrophysical and Laboratory Plasmas , 1984 , pp. 80 - 83
Copyright
Copyright © Naval Research Laboratory 1984. Publication courtesy of the Naval Research Laboratory, Washington, DC.

References

Cowley, A.P. and Crampton, D., 1975, Ap. J., 201, L65.CrossRefGoogle Scholar
Cowley, A.P., Crampton, D., and Hutchings, J.B., 1979, Ap. J., 231, 539.CrossRefGoogle Scholar
Kahn, S.M., Seward, F.D., and Chlebowski, T., 1984, Ap. J., 283, 286.CrossRefGoogle Scholar
de Korte, P.A.J. et al.., 1981, Sp. Sci. Rev., 30, 495.CrossRefGoogle Scholar
Seward, F.D., et al., 1982, Appl. Opt., 21, 2012.CrossRefGoogle Scholar
Vrtilek, S.D., Kahn, S.M., Seward, F.D., and Grindlay, J.E., 1984, in prep.Google Scholar