BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:David Nichols \, University of Amsterdam \n\n
Gravitational waves from th e mergers of ten binary black holes and one binary neutron star were detec ted in the first two observing runs by the Advanced LIGO and Virgo detecto rs. In this talk\, I will discuss the eleven gravitational-wave detections and the electromagnetic observations that accompanied the neutron-star me rger. These detections confirmed many of the predictions of general relati vity\, and they initiated the observational study of strongly curved\, dyn amical spacetimes and their highly luminous gravitational waves. One aspec t of these high gravitational-wave luminosities that LIGO and Virgo will b e able to measure is the gravitational-wave memory effect: a lasting chang e in the gravitational-wave strain produced by energy radiated in gravitat ional waves. I will describe how this effect is related to symmetries and conserved quantities of spacetime\, how the memory effect can be measured with LIGO and Virgo\, and how new types of memory effects have been recent ly predicted. I will conclude by discussing the plans for the next generat ion of gravitational-wave detectors after LIGO and Virgo and the scientifi c capabilities of these new detectors. These facilities could detect milli ons of black-hole and neutron-star mergers per year\, and they can provide insights on a range of topics from the population of short gamma-ray burs ts to the presence of dark matter around black holes.
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\n DTSTART:20190220T203000Z LOCATION:Physics Building\, Room 204 SUMMARY:Gravitational waves and fundamental properties of matter and spacet ime END:VEVENT END:VCALENDAR