A Radio-Continuum Study of the Supernova Remnant MSH 11-61A

Details A Radio-Continuum Study of the Supernova Remnant MSH 11-61A A Radio-Continuum Study of the Supernova Remnant MSH 11-61A

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005seraj.170...47f&link_type=abstract

Serbian Astronomical Journal, Vol. 170, p. 47-56 (http://saj.matf.bg.ac.yu/)

Astronomy and Astrophysics

Astronomy

2

Ism: Individual Objects (Msh 11-61A, G290.1-0.8), Ism: Supernova Remnants, Radio Continuum: Ism

Scientific paper

We present a high-resolution radio-continuum study of Galactic supernova remnant MSH 11-61A. We combine moderate resolution X-ray, radio-continuum and CO data to study the morphology and kinematics of MSH 11-61A. We estimate the radio-continuum spectral index to be alpha843-4850=-0.33 +- 0.07 based on our flux density measurements and also note that this SNR has significant `turn-over' spectra at lower (29.9-843 MHz) frequencies. The diameter of MSH 11-61A is estimated to be 12.5 arcmin with `ear' extensions of 4 arcmin to the northwest and southeast. The striking anticorrelation between X-ray and radio-continuum images confirms a mixed-morphology classification of this remnant. The CO images are consistent with a distance reported by Rosado et al. (1996) of about 7 kpc.

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