astrolunch: Kazumi Kashiyama (U-Tokyo)

Tue, 24/11/2020 - 12:30 to 13:30

Title : Synchrotron Boilers in Embryonic Pulsar Wind Nebulae 

Abstract : The rotation energy of fast-spinning strongly-magnetized newborn neutron stars are a promising energy source of energetic transients including gamma-ray bursts, hypernovae, super-luminous supernovae (SLSNe), and fast radio bursts (FRBs). In general, the rotation energy is extracted by a relativistic wind, shocking into the surrounding ejecta to form a wind nebula, which can be a smoking gun of the neutron-star central engines. Here we focus on the radio and submm emission from such a wind nebula with an age less than ~100 year. We calculate how the emission spectrum evolve with time depending on the history of injection, heating, and cooling of the parent electrons in the nebula. We apply the model to the radio counterparts of SLSN PTF10hgi and FRB 121102, and discuss the implications. 

The talk can be attended via the following zoom link

Meeting ID: 899 8361 4551
Passcode: 823598