Shiau-Jie Rau (National Tsing Hua University); Kuo-Chuan Pan (National Tsing Hua University)
Recent theoretical and numerical studies of Type Ia supernova explosion within the single-degenerate scenario suggest that non-degenerate companions could survive and the supernova impact could be luminous after the explosion. However, the surviving ex-companions are still not firmly detected in observations of nearby type Ia supernova remnants. In this project, we investigate the response of surviving companions via two-dimensional hydrodynamics simulations of supernova ejecta on binary companions and the subsequent long-term stellar evolution of surviving companions. We consider a wide range of possible hydrogen-rich companions and characterize the companion response systematically. Our results suggest that some of the single degenerate channels would favor low mass ($< 1M_\odot$) companion and close binary separation at the onset of the explosion, to explain the non-detection of surviving companions in nearby supernova remnants.