Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..587..538d&link_type=abstract
GAMMA 2001: Gamma-Ray Astrophysics 2001. AIP Conference Proceedings, Volume 587, pp. 538-542 (2001).
Astronomy and Astrophysics
Astrophysics
2
Molecular Clouds, H2 Clouds, Dense Clouds, And Dark Clouds, Gamma-Ray, X- And Gamma-Ray Telescopes And Instrumentation, Interstellar Dust Grains, Diffuse Emission, Infrared Cirrus, Cosmic Rays
Scientific paper
We present an analysis of the interstellar gamma-ray emission observed toward the extensive molecular cloud complexes in Taurus and Perseus by the Energetic Gamma-Ray Experiment Telescope (EGRET). The region's large size (more than 300 square degrees) and location below the plane in the anticenter are advantageous for straightforward interpretation of the interstellar emission. The complex of clouds in Taurus has a distance of ~140 pc and is near the center of the Gould Belt. The complex in Perseus, adjacent to Taurus on the sky, is near the rim of the Belt at a distance of ~300 pc. The findings for the cosmic-ray density and the molecular mass-calibrating ratio N(H2)/WCO in Taurus and Perseus are compared with results for other nearby cloud complexes resolved by EGRET. The local clouds that now have been studied in gamma rays can be used to trace the distribution of high-energy cosmic rays within 1 kpc of the sun. .
Digel Seth William
Grenier Isabelle A.
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