The magnetic field strength in the H II region S232

Details The magnetic field strength in the H II region S232 The magnetic field strength in the H II region S232

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...235l.105h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 235, Jan. 15, 1980, p. L105-L109.

Astronomy and Astrophysics

Astrophysics

14

Field Strength, H Ii Regions, Interstellar Magnetic Fields, Nebulae, Astronomical Maps, Extragalactic Radio Sources, Faraday Effect, Polarization Characteristics

Scientific paper

The line-of-sight component of the magnetic field strength in the H II region S232 has been determined by measuring the Faraday rotation of the extragalactic background source 4C +36.11. The two lobes of this source have rotation measures of 660 and 760 rad/sq m, produced mainly by S232. The emission measure of S232 at the position of 4C +36.11 is probably 460 per cm to the 6th pc. In S232, the ratio of the line of sight component of the magnetic field to the electron density is approximately equal to 1.9 microgauss/cu cm and if the electron density is approximately equal to 5/cu cm, the line of sight component of the magnetic field is approximately equal to 9.5 microgauss. These results are consistent with current empirical knowledge of magnetic field strengths.

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