The IRAS cirrus and the diffuse ultraviolet background

Details The IRAS cirrus and the diffuse ultraviolet background The IRAS cirrus and the diffuse ultraviolet background

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...183..335j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 183, no. 2, Sept. 1987, p. 335-340.

Astronomy and Astrophysics

Astronomy

11

Background Radiation, Cosmic Dust, Cosmic Rays, Diffuse Radiation, Infrared Spectra, Ultraviolet Radiation, Infrared Astronomy Satellite, Interstellar Matter, Milky Way Galaxy

Scientific paper

The authors show that a correlation exists at high and intermediate galactic latitudes between the diffuse infrared background intensity at 100 μm as measured by IRAS and the diffuse background intensity in the far ultraviolet. The slope of this correlation is in reasonable quantitative agreement with the expected ratio between scattered and thermal emission from high latitude low albedo dust grains illuminated and heated by the integrated interstellar radiation field. The existence of this correlation thus provides strong observational support for both the dust back-scattering explanation for the known correlation between diffuse UV background and line-of-sight 21 cm column density, and the closely related radiatively heated grain emission model for the IRAS cirrus phenomenon.

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