Bower et al. 1999, The Linear Polarization of Sagittarius A* II.
The Linear Polarization of Sagittarius A* II. VLA and BIMA Polarimetry at 22, 43 and 86 GHz
Bower G.C.(1,2), Wright M.C.H.(3), Backer D.C.(3), & Falcke H.(1)
(1) Max-Planck-Institut für Radioastronomie, Auf den Hüugel 69, D-53121 Bonn, Germany
(2) National Radio Astronomy Observatory, P.O. Box O, 1003 Lopezville, Socorro, NM 87801
(3) Astronomy Department & Radio Astronomy Laboratory, University of California, Berkeley, CA 94720
We present a search for linear polarization at 22 GHz, 43 GHz and 86
GHz from the nearest super massive black hole candidate, Sagittarius
A*. We find upper limits to the linear polarization of 0.2%, 0.4% and
1%, respectively. These results strongly support the conclusion of our
centimeter wavelength spectro-polarimetry that Sgr A* is not
depolarized by the interstellar medium but is in fact intrinsically
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