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

Preprint

7 June 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9706067

Abstract

(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.

Keywords

POLARIZATION OBSERVATIONS
SUPERNOVA REMNANTS
DISSOCIATIVE
MASERS
IC443
W44
W28

All Related Versions

Version 1, 1997-06-07, ArXiv
Published version: The Astrophysical Journal, 489 (1), 143.

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