Interstellar dust as a cosmological foreground

Details Interstellar dust as a cosmological foreground Interstellar dust as a cosmological foreground

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999phdt.........2f&link_type=abstract

Thesis (PhD). UNIVERSITY OF CALIFORNIA, BERKELEY, Source DAI-B 60/05, p. 2173, Nov 1999, 153 pages.

Mathematics

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2

Galactic Dust, Microwave Emission

Scientific paper

This dissertation explores the effect of interstellar dust in the Galaxy on cosmological measurements. We describe a map of dust temperature and column density produced with far IR data at 100 μm. This map may be used to predict optical extinction and reddening over the whole sky, and also serves as a template for microwave emission from dust. A dust emission model based on FIRAS data is presented, along with a prescription for extrapolation of the dust emission from 100 μm to longer wavelengths. In addition, measurements of the Cosmic IR Background at 60-240 μm are obtained by modeling zodiacal emission from the inter-planetary dust and its temporal variation as the Earth orbits the Sun. This emission is found to contain a factor of ~2 more energy than previously thought, based on SCUBA source counts. All of the maps described in this dissertation are available to the astronomical community, and instructions for use are included.

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