[Okc-wp4] Meeting on Thursday 16th

[Haakon Andresen]

Dear everyone,

We will have a EO meeting this week to. Our speaker is Tatsuya Matsumoto, visiting from Kyoto Universtiy.

We will meet in A5:1003 at 13.00

Title: A new analytical approach to analyze shock interacting supernovae

Abstract: Recent observations discovered that a small fraction of core-collapse supernovae (SNe) show peculiar light curves such as double peaks and bumpy structure.
A promising mechanism to produce these behaviors is a shock interaction between SN ejecta and circumstellar material (CSM). In this scenario, the light curve is shaped
by the emission from the shock and the CSM should have a non-uniform density profile corresponding to the observed peaks or bumps, which may tell us the last activity of
massive stars before core-collapse. However, most studies on shock interacting SNe assume a power-law like smooth CSM density profiles and cannot be applied to multi-peak SNe.
In this talk, I propose a new analytical technique to analyze multi-peak SNe and estimate the CSM profile. I’ll demonstrate its application to observed several SNe,
reconstruct the CSM profile, and estimate the SN ejecta parameters.


Best,
Haakon (on behalf of the organizers)
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