Timescales for detection of super-Chandrasekhar white dwarfs by gravitational wave astronomy

Abstract

In about last couple of decades, the inference of the violation of the Chandrasekhar mass-limit of white dwarfs from indirect observation is probably a revolutionary discovery in astronomy. Various researchers have already proposed different theories to explain this interesting phenomenon. However, such massive white dwarfs usually possess very little luminosity, and hence they, so far, cannot be detected directly by any observations. We have already proposed that the continuous gravitational wave may be one of the probes to detect them directly, and in the future, various space-based detectors such as LISA, DECIGO, and BBO, should be able to detect many of those white dwarfs (provided they behave like pulsars). In this paper, we address various timescales related to the emission of gravitational as well as dipole radiations. This exploration sets a timescale for the detectors to observe the massive white dwarfs.

10 pages including 3 figures and 5 tables; Accepted for publication in ApJ

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• The life cycle of magnetars: a novel approach to estimate their ages
• White dwarfs in regularized 4D Einstein-Gauss-Bonnet gravity
• Detection possibility of continuous gravitational waves from rotating magnetized neutron stars
• Continuous gravitational wave detection to understand the generation mechanism of fast radio bursts
• Double relativistic master polytrope for anisotropic matter
• Resolving dichotomy in compact objects through continuous gravitational waves observation
• Modified virial theorem for highly magnetized white dwarfs
• Formation, Possible Detection and Consequences of Highly Magnetized Compact Stars
• Prospects for the Observation of Continuous Gravitational Waves from Deformed Fast-spinning White Dwarfs
• Crystallized white dwarf stars in scalar-tensor gravity
• Periodic Activities of Fast Radio Burst Repeaters from Precessing Magnetars with Evolving Obliquity
• Identifying highly magnetized white dwarfs: A dimensionality reduction framework for estimating magnetic fields
• Relativistic Landau quantization in non-uniform magnetic field and its applications to white dwarfs and quantum information
• Continuous Gravitational Waves from Supersoft X-ray Sources: Promising Targets for deci-Hz Detectors
• Natural evidence for fuzzy sphere noncommutative geometry: super-Chandrasekhar white dwarfs
• Timescales for Detecting Magnetized White Dwarfs in Gravitational Wave Astronomy
• Super-Chandrasekhar limiting mass white dwarfs as emergent phenomena of noncommutative squashed fuzzy spheres
• Massive Neutron Stars and White Dwarfs as Noncommutative Fuzzy Spheres