# Continuous gravitational wave from magnetized white dwarfs and neutron stars: possible missions for LISA, DECIGO, BBO, ET detectors

## TL;DR

This paper explores the potential for upcoming gravitational wave detectors to directly observe continuous waves emitted by magnetized white dwarfs and neutron stars, which could confirm their existence and properties.

## Contribution

It proposes that rotating magnetized white dwarfs and neutron stars can emit detectable continuous gravitational waves, highlighting their potential as targets for future observatories.

## Key findings

- Magnetic fields influence the formation of super-Chandrasekhar white dwarfs and massive neutron stars.
- Rotating magnetized compact objects can emit continuous gravitational waves detectable by future detectors.
- Detection of such waves would provide direct evidence of these objects' existence and characteristics.

## Abstract

Recent detection of gravitational wave from nine black hole merger events and one neutron star merger event by LIGO and VIRGO shed a new light in the field of astrophysics. On the other hand, in the past decade, a few super-Chandrasekhar white dwarf candidates have been inferred through the peak luminosity of the light-curves of a few peculiar type Ia supernovae, though there is no direct detection of these objects so far. Similarly, a number of neutron stars with mass $>2M_\odot$ have also been observed. Continuous gravitational wave can be one of the alternate ways to detect these compact objects directly. It was already argued 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 certain angular frequency, then they can efficiently emit gravitational radiation, provided their magnetic field and rotation axes are not aligned, 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 rotating magnetized white dwarfs as well as massive neutron stars.