Dark Gas in the Era of Fermi

Details Dark Gas in the Era of Fermi Dark Gas in the Era of Fermi

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21335508c&link_type=abstract

American Astronomical Society, AAS Meeting #213, #355.08; Bulletin of the American Astronomical Society, Vol. 41, p.498

Astronomy and Astrophysics

Astronomy

Scientific paper

Dark gas, not accounted for in the HI and CO surveys, has been suggested to interpret the EGRET Galactic interstellar emission (Grenier et al., Science 2005). High-energy photons above 100 MeV produced by cosmic-ray interactions were detected above the expected HI and CO clouds emission and were found to be correlated with the total dust column-density and infrared emission maps. A large dark-gas mass, of the order of a third of the molecular mass, was derived in local molecular clouds at the interfaces between atomic and molecular gas.
We will review the status of the dark gas using observations from the Large Area Telescope (LAT) aboard the recently launched Fermi gamma-ray observatory.

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