Journal article
Interstellar scattering of the radio source 2013+370
The Astrophysical journal, Vol.332(1), pp.346-353
09/1988
DOI: 10.1086/166660
Abstract
We report the results of a six-station, 1663 MHz VLBI observation of the radio source 2013+370. The image of this source is dominated by interstellar scattering and is observed to be elliptical with a major axis (FWHM) of 17 mas and an axial ratio of 0.70. A fit of the observations to a model visibility function yields a value for α, the spectral index of the power-law density irregularity spectrum, of α = 3.79 +/- 0.05. Corrections for the finite angular size of the source would probably produce a downward revision of α. Other important characteristics of the image are its smooth character, with no evidence of multiple images, and stationarity over several hours as well as over a two-year interval since a previous observation. Our observations are consistent with the interstellar density spectrum being close to Kolmogoroff for those scales which determine the angular broadening.
Details
- Title: Subtitle
- Interstellar scattering of the radio source 2013+370
- Creators
- Steven R SpanglerJames M Cordes
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.332(1), pp.346-353
- DOI
- 10.1086/166660
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Publisher
- University of Chicago Press
- Language
- English
- Date published
- 09/1988
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199946302771
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