The Cygnus Loop: Two Colliding Supernova Remnants

Details The Cygnus Loop: Two Colliding Supernova Remnants The Cygnus Loop: Two Colliding Supernova Remnants

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004mim..proc..153u&link_type=abstract

The Magnetized Interstellar Medium, Proceedings of the conference, held in Antalya, Turkey, September 8 - 12, 2003, Eds: B. Uyan

Physics

1

Scientific paper

The Cygnus Loop was often classified as a middle-aged supernova remnant (SNR) located below the Galactic equator (l = 74 degres, b = -8.6 degrees) at a distance of 770 pc. Its large size and little confusion with Galactic emission makes it an ideal test ground for evolutionary and structural theories of SNRs. Here we present radio images of the Cygnus Loop at 2675 MHz, including polarization, together with an X-ray map at 0.25 keV. Radio continuum and polarization data provide indications that the Cygnus Loop consists of two separate SNRs. Combining this result with data from the literature we argue that a secondary SNR exists in the south with a recently detected neutron star close to its center. Two interacting SNRs seem to be the best explanation to account for the Cygnus Loop observations at all wavelengths.

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