BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:1
UID:UW-Physics-Event-5172
DTSTART:20190919T203000Z
DTEND:20190919T220000Z
DTSTAMP:20260415T070749Z
LAST-MODIFIED:20190909T155546Z
LOCATION:4421 Sterling Hall\, Coffee and cookies 3:30 PM\, Talk begins
  3:45 PM
SUMMARY:The Geometry\, Energetics\, and Environment of the Binary Neut
 ron Star Merger GW170817: The Radio View\, Astronomy Colloquium\, Davi
 d Kaplan\, UW Milwaukee Physics Department
DESCRIPTION:I will discuss the major uncertainties regarding the geome
 try\,
\nenergetics\, and environment of the first EM/GW binary neutron
  star
\nmerger GW170817.  In particular I will look at the origin of t
 he radio emission\, how it differs from the early-time optical/infrare
 d 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 b
 roke degeneracies in the gravitational wave data analysis to provide i
 nclination constraints and improved measurements of the Hubble Constan
 t.  Finally\, I will talk about new events from LIGO's latest observin
 g run.
URL:https://www.physics.wisc.edu/events/?id=5172
END:VEVENT
END:VCALENDAR