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STScI Webcast

2017 Hot Sci @ STScI

“Supernova Ejecta and Dust Around Pulsar Wind Nebulae”

Presented by: Tea Temim (STScI)
Category: Science Colloquia   Duration: 30 minutes   Broadcast date: August 09, 2017
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A subclass of supernova remnants (SNRs) produced by core-collapse supernova (SN) explosions contain pulsars that generate winds of synchrotron emitting relativistic particles. The evolution of these pulsar wind nebulae (PWNe) is closely coupled to the evolution of their host SNRs, resulting in distinct evolutionary stages: from the PWN's early expansion into the unshocked SN ejecta to its late-phase interactions with the SNR reverse shock. The signatures of these interactions serve as powerful probes of the SN ejecta and dust, as well as the relativistic particle population injected by the pulsar. I will discuss multi-wavelength studies of these systems and their broader implications for understanding the origin of dust in galaxies and the long-term fate of the energetic particles that escape into the interstellar medium.