Diffuse X-ray Emission from Normal Late-Type Spiral Disks

Details Diffuse X-ray Emission from Normal Late-Type Spiral Disks Diffuse X-ray Emission from Normal Late-Type Spiral Disks

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.2906k&link_type=abstract

American Astronomical Society, HEAD meeting #11, #29.06; Bulletin of the American Astronomical Society, Vol. 41, p.700

Astronomy and Astrophysics

Astronomy

Scientific paper

There are multiple sources of X-ray emission in late-type spiral disks; diffuse emission, X-ray binaries, and unresolved stellar emission. Sufficiently deep exposures allow the sequestration of the X-ray binaries, but determining the source(s) of the remainder of the emission is difficult. Using multiwavelength spatial correlations and spatially resolved X-ray spectroscopy of three late-type spirals, M101, M33, and M83, one can show that 1) the bulk of the X-ray emission is correlated with the FUV emission, suggesting that the bulk of the X-ray emission is due to star formation 2) the X-ray/FUV correlation is non-linear, as one would expect, and 3) the shape of the X-ray spectrum is a function of the surface brightness with brighter regions being harder.

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