First International Latin American Conference on Gravitational Waves: 10 years since first detection

New results on the sky localization and polarization mode reconstruction of gravitational waves

Not scheduled

20m

Auditório Fernando de Mendonça (Instituto Nacional de Pesquisas Espaciais (INPE))

Speaker

Osvaldo Mario Moreschi (Facultad de Matemática Astronomía Física y Computación (FaMAF))

Description

We report new developments in the L2D+GWPM procedure
for sky localization using two detectors and gravitational-wave
polarization modes measurement.
We review the new findings presented in
https://doi.org/10.1007/s10509-025-04465-0,
where we report the first direct measurement
of spin-2 gravitational-wave polarization modes.
We present validation of the procedure using injected synthetic
spin-2 polarization modes.
We show sky localization for the GW170104 and GW150914 events,
comparing our results with previous estimates.
We show the reconstruction results for the spin-2 polarization modes
of both GW170104 and GW150914, and discuss whether the two LIGO
observatories detected nearly identical spin-2 polarization mode
components of their respective gravitational waves.