X-ray halos as diagnostics of interstellar grains

Details X-ray halos as diagnostics of interstellar grains X-ray halos as diagnostics of interstellar grains

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...376..490m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 376, Aug. 1, 1991, p. 490-499.

Astronomy and Astrophysics

Astrophysics

65

Halos, Interstellar Matter, X Ray Sources, Galactic Structure, Grains

Scientific paper

Interstellar grains scatter X-rays from point sources into an observable halo surrounding the source image. Attention is presently given to the scattering of various grain-size distributions, both for halos around point sources and the cases of a source occulted by the moon. The limitations associated with using the X-ray halo to ascertain the size distribution of grains. The distribution of dust along the line-of-sight is noted to affect the inner part of the halo, rendering it more peaked toward the central point source if the dust is concentrated near the source.

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