Speaker
Cecilie Cold
(University of Copenhagen)
Description
Massive stars end their lives in violent explosions known as supernovae. Some of these objects explode into material surrounding the star resulting in interaction visible in both spectra and light curves. This interaction is the characteristic of the supernova class called IIn. These objects are intrinsically rare but are estimated to be dominating the search for gravitationally lensed supernovae, which can be used to determine the local expansion of the Universe, but are these estimations correct? We assume that the rate of these type IIn supernovae is the same for all redshifts, which is not necessarily the case. Join me in exploring the world of type IIn supernovae.
