Far-Infrared Polarization by Absorption in the Molecular Cloud Sagittarius b2

Details Far-Infrared Polarization by Absorption in the Molecular Cloud Sagittarius b2 Far-Infrared Polarization by Absorption in the Molecular Cloud Sagittarius b2

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phdt........10d&link_type=abstract

Thesis (PHD). THE UNIVERSITY OF CHICAGO , Source DAI-B 58/04, p. 1924, Oct 1997, 52 pages.

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Interstellar Dust

Scientific paper

This paper presents a 2-arcminute by 2-arcminute map of 60 μm polarization from the core of the massive molecular cloud Sagittarius B2, located near the center of the Galaxy. The measurements were obtained from the Kuiper Airborne Observatory with the array polarimeter Stokes. The polarization (up to 8%) is large compared to the polarization at 115 μm and, in contrast to other molecular clouds, is greatest toward the peaks in the dust column density. We argue that the far-infrared polarization is due to absorption by aligned dust grains. The magnetic field in the absorbing cloud, as projected onto the plane of the sky, is roughly north-south, making an angle of 54o with the Galactic plane.

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