Asymmetries in the Expansion and Emission from Young Supernova Remnants

CARLOS D. VIGH; PABLO F. VELÁZQUEZ; DANIEL O. GÓMEZ; ESTELA M. REYNOSO; ALEJANDRO ESQUIVEL; E. MATIAS SCHNEITER

IOP PUBLISHING LTD

Lugar: Philadelphia; Año: 2011 vol. 727 p. 32 - 32

e present two-dimensional and three-dimensional numerical simulations of asymmetric young supernova remnants (SNRs) carried out with the hydrodynamical code YGUAZÚ, aiming to quantitatively assess the role of different factors that may give origin to such asymmetries in their expansion. In particular, we are interested in modeling the morphology of Tycho´s SNR to address whether the companion star of a Type Ia supernova progenitor has played a role in the subsequent evolution of the remnant. With the results from the numerical simulations, we can not only study the morphology of the SNR but also compute the emission of the remnant in different spectral bands. In particular, we simulate X-ray maps, which can be directly compared to recent and previous observations of Tycho´s SNR. Our results suggest that the most likely explanation for Tycho´s morphology is that after the supernova (SN) explosion the shock front stripped the envelope of its companion. We represent this effect by adding