Journal article
VLBI angular broadening measurements in the Cygnus region
The Astrophysical journal, Vol.337(2), pp.730-738
02/1989
DOI: 10.1086/167144
Abstract
We report multifrequency VLBI (observations of angular broadening of eight compact radio sources whose lines of sight pass through the Galactic plane in Cygnus. We use the characteristic λ^2^ dependence of angular size to distinguish between scattered and intrinsic structure. The measured angular sizes of four of the eight sources exhibit a λ^2^ dependence, a result consistent with angular broadening by intervening turbulence. Variation in the strength of scattering as a function of position indicates that scattering in the Cygnus region changes by a factor of 2-5 for angular separations of a few degrees. With the exception of one source, the observed angular broadening is confined within a few degrees of the Galactic plane. Comparison of scattering with H I absorption reveals no significant association between the amount of neutral hydrogen and the magnitude of scattering along the different lines of sight in the Cygnus region.
Details
- Title: Subtitle
- VLBI angular broadening measurements in the Cygnus region
- Creators
- Alan L Fey - University of IowaSteven R SpanglerRobert L Mutel - University of Iowa
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.337(2), pp.730-738
- DOI
- 10.1086/167144
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Publisher
- University of Chicago Press
- Language
- English
- Date published
- 02/1989
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199682002771
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