Astronomy and Astrophysics – Astronomy
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...184.6508d&link_type=abstract
American Astronomical Society, 184th AAS Meeting, #65.08; Bulletin of the American Astronomical Society, Vol. 26, p.969
Astronomy and Astrophysics
Astronomy
Scientific paper
We present measurements of the angular broadening of OH masers in W49N, made by very long baseline interferometry. We observe a lower cutoff to the distribution of observed sizes of maser spots, at about 50 mas. Individual maser spots are significantly elongated with typical axial ratios between 2 and 3. We attribute these effects to anisotropic interstellar scattering. Alignment of the major axes of the scattered spots suggests the presence of a strongly ordered component to the ambient interstellar magnetic field. We also present preliminary measurements of the spectrum of the fluctuations in electron density responsible for interstellar scattering.
Desai Km
Diamond Pj
Gwinn Cr
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