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Physics & Astronomy -Senior Honor Thesis - Astoria Zehua Song, Dartmouth College

Title: "The Sensitivity of Space-based Gravitational-Wave Detectors to The Stochastic Gravitational-Wave Background”

Friday, May 27, 2022
11:00am – 12:00pm
Haldeman Hall 41 (Kreindler Conference Hall)
Intended Audience(s): Public
Categories: Lectures & Seminars

Abstract: A Stochastic Gravitational-Wave Background (SGWB) is a powerful probe into events in the early universe. Space-based gravitational wave detector missions in planning such as Laser Interferometer Space Antenna (LISA) and gravitational wave detector Taiji offer the best opportunity to detect an SGWB. LISA and Taiji are both scheduled to be in operation in the 2030s. A joint LISA and Taiji mission would increase the sensitivity for both the intensity and circular polarization of an SGWB. In this thesis, we numerically evaluate the Signal-to-Noise Ratios (SNRs) and GW strain for both the intensity, circular polarization, and anisotropies of an SGWB for various different orbital configurations of LISA and Taiji. We derive new equations for SNR which include intensity as a source of noise for circular polarization and the galactic confusion noise as a source of noise for both intensity and circular polarization. These calculations allow us to find the optimal configuration for LISA and Taiji, which will improve the ability of the joint mission to detect the SGWB.

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Join Zoom Meeting
https://dartmouth.zoom.us/j/99098188459?pwd=dGpudzJINVZ0dTkzb2pWQStkdXFQZz09

Meeting ID: 990 9818 8459
Passcode: Song

For more information, contact:
Tressena Manning
tressena.a.manning@dartmouth.edu
603-646-2854
Permanent URL to this event: https://physics.dartmouth.edu/events/event?event=67104

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