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Interpretation of radio continuum and molecular line observations of Sgr B2: Free-free and synchrotron emission, and implications for cosmic rays

Protheroe, Raymond; Ott, Juergen; Ekers, Ronald D; Jones, D I; Crocker, Roland

Description

Recent ammonia (1,1) inversion line data on the Galactic star-forming region Sgr B2 show that the column density is consistent with a radial Gaussian density profile with a standard deviation of 2.75 pc. Deriving a formula for the virial mass of spherical Gaussian clouds, we obtain Mvir = 1.9 × 106 M⊙ for Sgr B2. For this matter distribution, a reasonable magnetic field and an impinging flux of cosmic rays of solar neighbourhood intensity, we predict the expected synchrotron emission from the...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/82340
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1111/j.1365-2966.2008.13752.x

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