Bower et al. 2000, Linear Polarization in Sgr A* at 112 GHz

BIMA Observations of Linear Polarization in Sagittarius A* at 112 GHz

Bower G.C.(1), Wright M.C.H.(2), Falcke H.(3), Backer D.C.(2)

(1) National Radio Astronomy Observatory, P.O. Box O, 1003 Lopezville, Socorro, NM 87801
(2) Astronomy Department & Radio Astronomy Laboratory, University of California, Berkeley, CA 94720
(3) Max-Planck-Institut für Radioastronomie, Auf den Hüugel 69, D-53121 Bonn, Germany

Astrophysical Journal Letters, Vol. 555, L103 (2001)


We report here BIMA array observations of linear polarization in Sagittarius A*, the compact radio source in the Galactic Center. These observations had a resolution of 20'' x 5'' oriented North-South. We do not detect linear or circular polarization at a level of 1.8% at 112 GHz. This puts a new constraint on models that show a sharp change in linear polarization fraction at 100 GHz.

Paper: Available in PostScript and (AAS)LaTex.

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Questions: Heino Falcke,