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<p>Hello</p>
<p>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.</p>
<p><b>Multiwavelength Signals from Pulsar-Driven Supernovae</b></p>
<p>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.<br>
<br>
</p>
<p>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.</p>
<p>Thanks<br>
Chris and Tine<br>
</p>
<p>Christopher Usher is inviting you to a scheduled Zoom meeting.
<br>
<br>
Topic: Astronomy Seminar
<br>
Time: Sep 3, 2021 10:30 AM Stockholm
<br>
</p>
<p>Join Zoom Meeting
<br>
<a class="moz-txt-link-freetext" href="https://stockholmuniversity.zoom.us/j/61688040328?pwd=czdtZVBxUkp1ekp4WFYxQUhLUkh4QT09">https://stockholmuniversity.zoom.us/j/61688040328?pwd=czdtZVBxUkp1ekp4WFYxQUhLUkh4QT09</a>
<br>
<br>
Meeting ID: 616 8804 0328
<br>
Passcode: c9gMQX28C
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