[Astronomy seminar] Astronomy Department Seminar - September 3rd Conor Omand

[Astronomy seminar announcements]

Hello

On Friday the 3rd we will have the first astronomy seminar of the year 
with our own Conor Omand (Stockholm University) speaking via Zoom at 10:30.

*Multiwavelength Signals from Pulsar-Driven Supernovae*

The pulsar-driven supernova model, where the spin-down energy of a ~ms 
rotating highly magnetized neutron star powers the luminosity and/or 
dynamics of the supernova, can be used to explain a number of 
transients, most notably Type-I Super-Luminous Supernovae (SLSNe-I).  In 
this model, the energy from the pulsar is injected into the ejecta 
through broadband emission from the pulsar wind nebula (PWN).  There are 
several models which can explain SLSNe-I light curves, so quasi-thermal 
optical supernova emission can not differentiate between different 
central supernova engines, but this non-thermal PWN emission is unique 
to the pulsar engine.   We calculated the expected radio and millimetre 
PWN emission from several SLSNe-I, and then did follow-up observations 
to test these predictions.  We also investigated the effect of PWNe on 
dust formation and calculated the emission from grains heated by the PWN.

We are trying something new this year with leaving the Zoom call open 
after the formal hour of the seminar is up to allow the speaker, if they 
wish, to chat informally with anyone who is interested.

Thanks
Chris and Tine

Christopher Usher is inviting you to a scheduled Zoom meeting.

Topic: Astronomy Seminar
Time: Sep 3, 2021 10:30 AM Stockholm

Join Zoom Meeting
https://stockholmuniversity.zoom.us/j/61688040328?pwd=czdtZVBxUkp1ekp4WFYxQUhLUkh4QT09 


Meeting ID: 616 8804 0328
Passcode: c9gMQX28C


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