[Astronomy seminar] Next astro seminar the 09/11 at 10:30 in FC61

[Astronomy seminar announcements]

Dear all,
welcome to the next seminar which will take place on Friday the 9th of November at 10:30 in FC61.
The speaker of this week is Prof. David Kaplan from UW-Milwaukee. 
David is currently visiting our astronomy department for an extend period of a few months.
Title and abstract follow below and can also be found in the Albanova agenda.
https://www.albanova.se/event/astronomy-seminar-the-geometry-energetics-and-environment-of-the-binary-neutron-star-merger-gw170817-the-radio-view/

Kind regards,
Alexis and Angela

The Geometry, Energetics, and Environment of the Binary Neutron Star
Merger GW170817: The Radio View

I will discuss the major uncertainties regarding the geometry,
energetics, and environment of the first EM/GW binary neutron star
merger GW170817.  In particular I will look at the origin of the radio
emission, how it differs from the early-time optical/infrared
emission, and what that tells us about how the explosion proceeded.  I
will show how constraints from the radio lightcurve, polarization, and
Very Long Baseline Interferometry helped provide evidence for a broad,
mildly relativistic "cocoon" along with a narrow jet.  This 
broke degeneracies in the gravitational wave data analysis to provide
inclination constraints and improved measurements of the Hubble
Constant.
 

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Angela Adamo  

Department of Astronomy
Stockholm University and Oskar Klein Centre
SE-10691 Stockholm - Sweden
tel: +46 (0)8 5537 8556 
email: angela.adamo at astro.su.se
http://ttt.astro.su.se/~adamo
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