Magnetic fields in the Orion Kleinmann-low nebula as derived from hydroxyl maser radiation

Journal Article · Wed Sep 15 04:00:00 EDT 1982 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/160281· OSTI ID:6560550

Hansen, S S

The Orion Kleinmann-Low Nebula was observed in the four hyperfine transitions of OH in the /sup 2/Pi/sub 3/2/, 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/sup -1/. The frequency separation of the four observed lines, i.e., the sigma/sup plus-or-minus1/ and sigma/sup plus-or-minus2/ 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 sigma/sup plus-or-minus3/ circularly polarized Zeeman components are suppressed by the sigma/sup plus-or-minus1/ components.

• Research Organization: University of Massachusetts, Amherst
• OSTI ID: 6560550
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 260:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
ELECTRONIC EQUIPMENT
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
HYDROXYL RADICALS
HYPERFINE STRUCTURE
INTERSTELLAR MAGNETIC FIELDS
MAGNETIC FIELDS
MASERS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
NEBULAE
POLARIZATION
RADICALS
ZEEMAN EFFECT