The linear polarization of Sagittarius A*. II. VLA and BIMA polarimetry at 22, 43, and 86 GHz

被引：44

作者：

Bower, GC

Wright, MCH

Backer, DC

Falcke, H

机构：

[1] Natl Radio Astron Observ, Socorro, NM 87801 USA

[2] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[3] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[4] Univ Calif Berkeley, Radio Astron Lab, Berkeley, CA 94720 USA

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 527卷 / 02期

基金：

美国国家科学基金会;

关键词：

galaxies : active; Galaxy : center; ISM : individual (Sagittarius A*); polarization; scattering;

D O I：

10.1086/308128

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a search for linear polarization at 22, 43, and 86 GHz from the nearest supermassive 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 spectropolarimetry that Sgr A* is not depolarized by the interstellar medium but is in fact intrinsically depolarized.

引用

页码：851 / 855

页数：5

共 38 条

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