Polarization Observations of 1720 MHz OH Masers toward the Three Supernova Remnants W28, W44, and IC443

Details Polarization Observations of 1720 MHz OH Masers toward the Three Supernova Remnants W28, W44, and IC443 Polarization Observations of 1720 MHz OH Masers toward the Three Supernova Remnants W28, W44, and IC443

1997-06-06

arxiv.org/abs/astro-ph/9706067v1

Astronomy and Astrophysics

Astrophysics

ApJ Let (accepted). Hardcopies available from dfrail@nrao.edu

Scientific paper

10.1086/304784

(abridged) - We present arcsecond resolution observations from the VLA of the satellite line of the hydroxyl molecule (OH) at 1720.53 MHz toward three Galactic supernova remnants: W28, W44 and IC443. All of our observations are consistent with a model in which the OH(1720 MHz) is collisionally excited by H2 molecules in the postshock gas heated by a non-dissociative shock. Supernova remnants with OH(1720 MHz) maser emission may be promising candidates to conduct high energy searches for the sites of cosmic ray acceleration.

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