Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...153...17b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 153, no. 1, Dec. 1985, p. 17-34.
Astronomy and Astrophysics
Astronomy
185
Galactic Structure, Milky Way Galaxy, Radio Emission, Brightness Temperature, Cosmic Rays, H Ii Regions, Nonthermal Radiation, Sky Surveys (Astronomy), Supernova Remnants, Three Dimensional Models
Scientific paper
A three-dimensional model of the galactic radio emission at 408 MHz is presented based on the all-sky survey of Haslam et al. (1981). In this model the Galaxy consists of a thick nonthermal radio disk in which a thin disk is embedded. Both thin and thick disk exhibit spiral structure. The thin disk contributes about 10% of the total power at 408 MHz. Its equivalent width is approximately equal to that of the gas disk. As possible constituents of the thin disk extended low-density H II regions, old supernova-remnants below the present detection limit and synchrotron emission from an H I-related cloud component are proposed. The thick disk emits about 90% of the total power at 408 MHz. The authors suggest the magnetic field and relativistic particles in the thick disk are dynamically coupled to the hot halo gas.
Berkhuijsen Elly M.
Beuermann Klaus
Kanbach Gottfried
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