BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Zachariah Etienne\, University of Idaho\n\n
Perhaps the most significan t astronomical discovery of our lifetimes\, code-named GW170817\, involved the collision of two neutron stars. The collision was detected both by gr avitational wave observatories\, and traditional electromagnetic telescope s. As neutron stars are made of the densest form of matter in our current Universe\, this single "\;multimessenger"\; event was a watershed moment in our understanding as to how matter and gravity behave at their m ost extreme\, far beyond what we can study in laboratories on Earth. For t he most part\, we compare observations against theoretical models to extra ct science from events like this. Unfortunately\, these theoretical models are severely limited both in quality and quantity\, leading to a critical need to improve them. Such improvements pose a key challenge to computati onal astrophysics\, as our most detailed models require expensive supercom puter simulations that generate full\, non-perturbative solutions of the g eneral relativistic field equations (numerical relativity). After a gentle introduction to multimessenger astrophysics and the challenges associated with multimessenger source modeling\, I will outline a new approach aimed at greatly reducing the cost of these simulations. With the reduced cost comes the potential to both perform colliding black hole simulations on th e consumer-grade desktop computer\, as well as add unprecedented levels of physical realism to colliding neutron star simulations on supercomputers.
\n DTSTART:20230213T183000Z LOCATION:Physics\, Room Zoom SUMMARY:Next-Generation Black Hole and Neutron Star Collision Simulations END:VEVENT END:VCALENDAR