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The Linear Polarization of Sagittarius A* II. VLA and BIMA Polarimetry at 22, 43 and 86 GHz

Geoffrey C. Bower·Melvyn C. H. Wright·Donald C. Backer·Heino Falcke
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Abstract

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 depolarized.

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Geoffrey C. Bower, Melvyn C. H. Wright, Donald C. Backer, Heino Falcke. 1999-07-21. The Linear Polarization of Sagittarius A* II. VLA and BIMA Polarimetry at 22, 43 and 86 GHz. https://doi.org/10.1086/308128

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