| Name: | Krishna Kumar Singh |
| Affiliation: | Bhabha Atomic Research Centre Mumbai |
| Conference ID : | ASI2023_580 |
| Title : | White Dwarf Pulsars as Source of Continuous Gravitational Waves |
| Authors : | K. K. Singh, A. Pathania, K. K Yadav, P. J. Meintjes |
| Mode of Presentation: | Poster |
| Abstract Category : | Stars, ISM and Galaxy |
| Abstract : | Binary systems comprising a rapidly spinning magnetized white dwarf and a
low mass companion star are dubbed as White Dwarf Pulsars. These sources
are getting increasing interest from the theoretical as well as observational
points of view. The spectacular pulsed emission over the entire
electromagnetic spectrum from radio to X-rays observed from these peculiar
sources appears to be powered by the spin of magnetized white dwarf and is
modulated over the spin frequency of the white dwarf. The process of energy
release in the magnetosphere of fast rotating, magnetized white dwarf can be
attributed to a canonical spin-powered pulsar model. An asymmetry around
the spin-axis of highly magnetized white dwarf may generate the gravitational
wave emission. In this work, we investigate the mechanism of gravitational
wave emission from the rapidly spinning white dwarfs due to magnetic
deformation. The amplitude and luminosity of continuous gravitational waves
are estimated for three white dwarf pulsar candidates namely AR Scorpii, AR
Aquarii and RX J0648. We discuss the prospects of detecting the gravitational
wave from these candidates by the upcoming high sensitivity detectors in the
vibrant field of gravitational wave astronomy. Importance of white dwarf
pulsars as potential targets for the multi-messenger astronomy is also
highlighted. |
