16–20 Apr 2024
National Museum of Natural Science
Asia/Taipei timezone

Gravitational wave radiometry with Stokes parameters

Not scheduled
20m
National Museum of Natural Science

National Museum of Natural Science

No.1, Guanqian Rd., North Dist., Taichung City 404023, Taiwan
Oral

Speaker

Izumi Kaku (Osaka Metropolitan University)

Description

The circular polarized astrophysical gravitational wave backgrounds may exist with detectable SNR for a finite observation time and the sensitivity of detectors, and may become the foreground radiation for observing the circular polarized cosmological gravitational wave background.

In this work, we developed a new analysis method introducing Stokes parameters into the gravitational wave radiometry to search for scattered background gravitational wave sources assuming circular polarized astrophysical gravitational wave backgrounds. We have also tested this method by analyzing simulated data of gravitational wave signals arriving from typical directions. In that analysis, it was confirmed that the modification of the radiometry filter function by the introduction of Stokes parameters can distinguish the polarization to observe gravitational waves.

Primary author

Izumi Kaku (Osaka Metropolitan University)

Presentation materials