Surveying X-Ray Halos with Axaf: Measuring Cloud Tomography and Grain Composition

Details Surveying X-Ray Halos with Axaf: Measuring Cloud Tomography and Grain Composition Surveying X-Ray Halos with Axaf: Measuring Cloud Tomography and Grain Composition

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop..156s&link_type=abstract

Chandra Proposal ID #01910788

Physics

Chandra Proposal Id #01910788

Scientific paper

Dust particles in the interstellar medium have been observed to scatter X-rays to produce a halo. The detailed dependence of the halo, especially at small (< 100'') on energy and angular distribution is a function of the physical properties of the dust particles (size, composition) and the distribution of the dust along the line of sight. The angular and spectral resolution of AXAF will allow the determination of these parameters. We propose an initial survey of three sources: GX 13+1, Cir X-1, the O Star HD 148937. Analysis tools developed for this program will have important applicability to correct observations of highly `reddened' compact sources.

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