Speaker
Sudhagar Suyamprakasam
(Nicolaus Copernicus Astronomical Center Polish Academy of Sciences, Poland)
Description
A biaxial or triaxial neutron star rotating about a non-principal axis of inertia emits a dual harmonic gravitational wave. i.e., gravitational wave at its rotational frequency and twice its rotational frequency. Those signals undergo modulations due to Earth's rotation and orbital motion, which create frequency shifts and side bands in the signal when they reach the gravitational wave detectors at Earth. We implemented high-order statistics such as bispectrum and bicoherence (a normalization of bispectrum) to search for the dual harmonics signal of targeted neutron stars and study them with the simulations. We show our detection results from the simulation and compare them with template-based analysis.
Primary author
Sudhagar Suyamprakasam
(Nicolaus Copernicus Astronomical Center Polish Academy of Sciences, Poland)
