Inverse Compton Origin of the Hard X-ray Emission from the Galactic Ridge

Details Inverse Compton Origin of the Hard X-ray Emission from the Galactic Ridge Inverse Compton Origin of the Hard X-ray Emission from the Galactic Ridge

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008head...10.0202p&link_type=abstract

American Astronomical Society, HEAD meeting #10, #2.02

Astronomy and Astrophysics

Astronomy

Scientific paper

A recent re-determination of the non-thermal component of hard X-ray emission from the Galactic ridge, using the SPI instrument on the INTEGRAL Observatory, is shown to be well reproduced as inverse Compton emission from the interstellar medium. Both cosmic-ray primary electrons and secondary electrons and positrons contribute to the emission. The prediction uses the GALPROP model and includes a new calculation of the interstellar radiation field. This solves a long-standing mystery of the origin of this emission, and opens a new window on Galactic cosmic rays.

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