The magnetic fields in the Orion Kleinmann-Low Nebula as derived from hydroxyl maser radiation

Details The magnetic fields in the Orion Kleinmann-Low Nebula as derived from hydroxyl maser radiation The magnetic fields in the Orion Kleinmann-Low Nebula as derived from hydroxyl maser radiation

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...260..599h&link_type=abstract

Astrophysical Journal, Part 1, vol. 260, Sept. 15, 1982, p. 599-603.

Astronomy and Astrophysics

Astrophysics

15

Hydroxyl Emission, Interstellar Magnetic Fields, Interstellar Masers, Orion Nebula, Circular Polarization, Molecular Spectra, Radio Spectra, Zeeman Effect

Scientific paper

The Orion Kleinmann-Low Nebula was observed in the four hyperfine transitions of OH in the 2II3/2, J=3/2 state. The circularly polarized radiation at 1612 MHz exhibits a Zeeman pattern centered at an LSR velocity of 8.02 km s-1. The frequency separation of the four observed lines, i.e., the σ±1 and a 2 lines, is in excellent agreement with the Zeeman splitting produced by a 4 milligauss field. The amplitude ratio of the four lines is within a factor of 2 of that predicted for a partially saturated maser. The σ±3 circularly polarized Zeeman components are suppressed by the σ±1 components.

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