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DTSTART;TZID=America/Chicago:20251031T153000
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DTSTAMP:20260611T130957
CREATED:20251002T142223Z
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SUMMARY:Physics Colloquium - Pratyusava Baral
DESCRIPTION:Detecting & Measuring Gravitational Waves in Current and Future Observatories\nPratyusava Baral\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nLow-latency (near real-time) detection of gravitational waves (GW) is crucial for multimessenger astronomy. I contribute to maintaining and operating the GstLAL-based search pipeline\, a flagship detection pipeline used by the LIGO-Virgo-KAGRA collaboration\, for the present observing run (May 2023 – ongoing). To test low-latency performance\, mock data challenges (MDC) are designed. I studied the latencies of sending out public alerts\, used to communicate with astronomers\, after a detection using the MDC. I also demonstrated the feasibility of a neural network-based algorithm that identifies the event with the best skymap for multimessenger follow-up from a set of several GW triggers in low latency. \nLooking forward to next-generation detectors such as Cosmic Explorer (CE)\, I developed the first Bayesian framework to estimate errors on inferred parameters\, incorporating effects due to Earth’s rotation and the long arm-lengths of the detectors. These effects are important for next-generation detectors and can be used to localize sources on the sky. This framework can analyze long and loud signals in ~1 day and is capable of using waveforms containing higher modes of radiation.
URL:https://uwm.edu/physics/event/physics-colloquium-pratyusava-baral/
LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States
CATEGORIES:Physics Colloquia
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