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arXiv · 2311.12140

MeerKAT 1.3 GHz Observations of Supernova Remnants

William Cotton·R. Kothes·F. Camilo·P. Chandra·S. Buchner·M. Nyamai
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Abstract

We present full Stokes MeerKAT L band (856--1712\,MHz) observations of \chg{36} high latitude supernova remnants. Sensitive, high dynamic range images show a wealth of structure. G15.1$-$1.6 appears to be an HII region rather than an SNR. G30.7$-$2.0 consists of three background extragalactic sources which appear to form an arc when imaged with much lower resolution. At least half of the remnants in the sample contain ``blowouts'', or ``ears'' showing these to be a common feature. Analysis of the polarimetric data reveals details of the magnetic field structure in the emitting regions of the remnants as well as magnetized thermal plasma in front of polarized emission. The chance alignment of G327.6+14.6 with a background AGN with very extended polarized jets allows testing for the presence of Faraday effects in the interior of the remnant. Scant evidence of Faraday rotating material is found in the interior of this remnant.

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William Cotton, R. Kothes, F. Camilo, P. Chandra, S. Buchner, M. Nyamai. 2023-11-20. MeerKAT 1.3 GHz Observations of Supernova Remnants. https://arxiv.org/abs/2311.12140

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