http://arxiv.org/abs/1812.04977
We review the theoretical background and the observational searches made for surviving companions of Type Ia supernovae. Theory comprises the characteristics of the stellar binary companions of the exploding white dwarfs at the time of the supernova outburst and the expected effects on them of the explosion, as well as their subsequent evolution. That includes space velocities, rotation, luminosities (with discussion of possible mechanisms producing very faint companions) .
We then present the searches already made in the Galactic remnants of Type Ia supernovae and we assess the results obtained up to now using ground-based telescopes and the {\it Hubble Space Telescope}. The same is done for the remnants of this type in the Large Magellanic Cloud. In both cases, we also characterize already identified remnants which are currently being investigated or that will be explored in the near future. We finally discuss the prospects to elucidate from those searches, using the {\it Hubble Space Telescope}, astrometric results from the {\it Gaia} space mission and the next generation of very large ground–based telescopes, which stellar systems do actually produce Type Ia supernovae.
P. Ruiz-Lapuente
Thu, 13 Dec 18
39/50
Comments: 74 pages, 17 Figures, 3 Tables. Submitted as invited review to New Astronomy Reviews. Comments welcome