Large-scale configuration of magnetic fields in spiral galaxies

Details Large-scale configuration of magnetic fields in spiral galaxies Large-scale configuration of magnetic fields in spiral galaxies

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...144..257s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 144, no. 2, March 1985, p. 257-260.

Astronomy and Astrophysics

Astronomy

26

Faraday Effect, Interstellar Magnetic Fields, Linear Polarization, Magnetic Field Configurations, Radio Astronomy, Spiral Galaxies, Disk Galaxies, Polarimetry, Polarization Characteristics, Radio Emission

Scientific paper

A simple method is proposed with which to derive the large-scale configuration of magnetic field in a disk galaxy from the characteristic variation of linear polarization angle along major and minor axes. The method tests two assumed models of field distribution, a bisymmetric-open spiral or a ring field configuration, by inferring a Faraday rotation distribution along major and minor axes of the galaxy at a single frequency. Deep measurements of linear polarization at 5 GHz were made for ten spiral galaxies using the 100-m telescope. Distributions of the polarized intensity and polarization angle along the major and minor axes were obtained for three galaxies NGC 253, NGC 2903, and IC 342. By applying the method proposed, it is established that the large-scale field in NGC 2903 is predominant in a bisymmetric and open spiral configuration, while IC 342 has a more ring-like field configuration. Adding to the data in the literature, it is concluded that spiral galaxies seem to have either a ring or a bisymmetric spiral magnetic field.

Affiliated with

Also associated with

No associations

Rating

Large-scale configuration of magnetic fields in spiral galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Large-scale configuration of magnetic fields in spiral galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large-scale configuration of magnetic fields in spiral galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-818358