Thermal OH (1667/1665 MHz) Absorption and Nonthermal OH (1720 MHz) Emission toward the W28 Supernova Remnant

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Thermal OH (1667/65 MHz) Absorption and Nonthermal OH (1720 MHz) Emission Towards the W28 Supernova Remnant

Received ; accepted – 2 – ABSTRACT The W28 supernova remnant is an excellent prototype for observing shocked gas resulting from the interaction of supernova remnants (SNRs) and adjacent molecular clouds (MCs). We present two new signatures of shocked molecular gas in this remnant. One is the detection of main-line extended OH (1667 MHz) absorption with broad linewidths. The column density of OH...

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We present arcsecond resolution observations from the VLA1 with full Stokes polarimetry of the ground-state satellite line of the hydroxyl molecule (OH) at 1720.53 MHz (2Π 3 2 , J = 32 , F = 2 → 1) toward three Galactic supernova remnants: W 28, W 44, and IC 443. The total number of individual OH(1720 MHz) “spots” we detect in each of these three remnants is 41, 25 and 6, respectively. The OH(1...

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ژورنال

عنوان ژورنال: The Astrophysical Journal

سال: 2003

ISSN: 0004-637X,1538-4357

DOI: 10.1086/344836