The polarization of the far-infrared radiation from the Galactic center

M. W. Werner, J. A. Davidson, M. Morris, G. Novak, S. R. Platt, R. H. Hildebrand

Research output: Contribution to journalArticle

Abstract

The first detection of linear polarization of the far-infrared (100-micron) radiation from the about 3-pc-diameter dust ring surrounding the galactic nucleus is reported. The percentage of polarization is between 1 and 2 percent at the three measured positions. It is argued that the polarized radiation is produced by thermal emission from elongated interstellar grains oriented by the local magnetic field. The dust ring is optically thin at 100 microns; therefore the observations sample dust through the entire depth of the cloud and are free of confusing effects due to embedded sources, scattering, or selective absorption. These data provide the first information about the configuration of the magnetic field in the dust ring.
Original languageEnglish
Pages (from-to)729-734
JournalThe Astrophysical Journal
Volume333
DOIs
Publication statusPublished - 1 Oct 1988

Fingerprint Dive into the research topics of 'The polarization of the far-infrared radiation from the Galactic center'. Together they form a unique fingerprint.

Cite this