Dynamical Evolution of Supernova Remnant VRO 42.05.01

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Scientific paper

We have numerically simulated the evolution of supernova remnant VRO 42.05.01(G166.0+4.3) in order to understand its morphology in radio and X-ray observations as well as the dynamical interaction of the supernova remnant with the surrounding interstellar medium. The Radio and ROSAT observations suggest that the unusual morphology of VRO 42.05.01 is caused by a supernova blast wave breaking out of the cloud boundary where the supernova event occurred, and expanding into another cloud across a much less dense and presumably hot cavity. Our numerical results are consistent with the interactions of a passing supernova blast wave with the clouds across the cavity. We discuss the implications of our results on the dynamics of VRO 42.05.01 such as the reverse shocks, the rejuvenation of the hot cavity, and the reflected shocks formed by the reverse shock collisions. We have theoretically mapped the radio continuum(1.4GHz) and X-ray(0.1~2keV) morphology which are consistent with the observational ones.

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