Abstract Details

Name: Surajit Kalita
Affiliation: IISc, Bangalore
Conference ID: ASI2020_503
Title : Continuous gravitational wave from magnetized compact objects
Authors and Co-Authors : Surajit Kalita and Banibrata Mukhopadhyay
Abstract Type : Oral
Abstract Category : General Relativity and Cosmology
Abstract : The abstract is based on my recent paper MNRAS 490, 2692-2705 (2019). Gravitational wave is the ripple in spacetime, formed due to distortion in the curvature of the spacetime, and propagates at the speed of light. It is emitted if the system has a non-zero quadrupole moment. Recent detection of gravitational wave from nine black hole merger events and one neutron star merger event by LIGO and VIRGO shed new light in the field of astrophysics. Apart from this, there is another type of gravitational wave, known as continuous gravitational wave, which is continuously emitted at a certain frequency and amplitude. On the other hand, in the past decades, discoveries of super-Chandrasekhar white dwarfs, as well as massive neutron stars, were great astrophysical successes, although they were inferred indirectly from other observations. Continuous gravitational wave can be one of the prominent alternate ways to detect these compact objects directly. In my presentation, I will show that magnetic field is one of the prominent physics to form super-Chandrasekhar white dwarfs and massive neutron stars. If such compact objects are rotating with a fixed angular frequency following certain conditions, they can efficiently emit gravitational radiation and these gravitational waves can be detected by some of the upcoming detectors, e.g. LISA, BBO, DECIGO, Einstein Telescope, etc. This will certainly be a direct detection of super-Chandrasekhar white dwarfs as well as massive neutron stars.