Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.264..853m&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 264, NO. 4/OCT15, P. 853, 1993
Astronomy and Astrophysics
Astronomy
15
Magnetic Fields - Polarization - Ism: Individual: G320.4-1.2 - Ism: Supernova Remnants - Radio Continuum: Interstellar
Scientific paper
The Galactic radio source MSH 15-52 (G 320.4-1.2) is a 30-arcmin non-thermal complex associated with the optical nebula RCW 89 and believed to be the remnant of a supernova; it contains the X-ray and radio pulsar PSR 1509-58, and it is assumed that an association with the SNR exists. In this paper we present a radio polarization study of this region which shows the presence of a polarized ring or shell, ˜40 arcmin in diameter, either extending from G 320.4-1.2 or coincident with part of it. The distributions of Faraday rotation and depolarization are also presented for this region. While G 320.4-1.2 clearly has a radial projected magnetic field, the field in the large ring is tangential, which suggests that it may be a blow-out from G 320.4-1.4. An alternative interpretation is that this new feature is a separate supernova remnant, G 320.6-1.6.
Caswell J. L.
Haynes Raymond F.
Milne Douglas K.
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