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The First Stars and Galaxies: Challenges for the Next Decade Participants
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Poster
Title: Interaction-Powered Supernovae as Probes of the High-Redshift Universe Author(s): Takashi Moriya Abstract: A supernova (SN) becomes as bright as a galaxy, and it is a powerful tool for probing the high-redshift universe. In particular, extremely luminous SNe (even MR < -21) were suggested to be detectable at z > 2, which is difficult for type Ia SNe to reach. Some luminous SNe are believed to be powered by the interaction of the SN ejecta with the circumstellar medium. For example, type IIn SNe, a typical type of luminous SNe, show evidence of this interaction. One of the interesting features of such interaction-powered SNe is the fact that they are bright in UV. With their intrinsic brightness in UV, interaction-powered SNe could unveil the properties of stars at high redshift and probe the primordial universe. We performed multigroup light curve calculations of interaction-powered SNe using STELLA code. Based on the synthetic multicolor light curves, we estimate the detectability of interaction-powered SNe at high redshifts with several telescopes.
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