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Astronomy Colloquium - "Setting the Stage for the Era of Gravitational Wave Discovery"

SpeakerWen-fai Fong, Einstein Fellow, University of Arizona
Date Nov 11, 2014
Time 3:45 pm  
Location Astronomy 134
Sponsor Department of Astronomy
Contact Rebecca Bare
Event type Seminar/Symposium
Views 65

The first advanced gravitational wave detectors are slated to begin operations in 2015, and will bring one of the most anticipated discoveries of the century: the direct detection of gravitational waves. The premier gravitational wave sources are the mergers of two compact objects, involving either two neutron stars or a neutron star and a black hole. While the gravitational wave signal will give insight to the basic properties of compact objects, a coincident detection at electromagnetic wavelengths will significantly leverage the event by providing precise sky localization and an association to a galaxy. The main challenge will be how to identify the correct electromagnetic counterpart amidst an otherwise dynamic sky. In this talk, I present ongoing efforts to characterize the electromagnetic signatures from compact object mergers. In particular, I present observational evidence linking mergers to two distinct counterparts: short-duration gamma-ray bursts (GRBs) and long-lived transients powered by the nucleosynthesis of heavy elements ("kilonovae"). Such observations are crucial in setting the stage for the upcoming revolutionary era of gravitational wave discovery.

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