Skip navigation.

Institute for the Physics and Mathematics of the UniverseWPI

IPMU Seminar

Date: October 8, 2008, 13:30 - 14:30
Place: Seminar Room at IPMU Prefab. B, Kashiwa Campus of the University of Tokyo
Speaker: Takaya Nozawa (IPMU)
Title: Formation of dust in primordial supernovae and its survival within the supernova remnants [PDF]
Abstract: The existence of dust at high redshifts has great impacts in interpreting the physical processes ongoing in the early universe from observations. At z > 5, the main sources of dust are considered to be supernovae (SNe). However, a fraction of dust formed in SN ejecta can be destroyed by the passage of the reverse shock before injected into the interstellar medium. In order to clarify the origin and nature of dust grains at high redshifts, we investigate the formation of dust in the ejecta of primordial SNe. In addition, we explore the processing of newly formed dust in the hot gas swept up by the reverse and forward shocks and report the composition, size, and amount of dust ejected from SNe into the interstellar medium.