Near- and sub-solar-mass naked singularities and black holes from transmutation of white dwarfs
Document Type
Article
Publication Title
Journal of Cosmology and Astroparticle Physics
Abstract
Recent gravitational wave events have suggested the existence of near-solar-mass black holes which cannot be formed via stellar evolution. This has opened up a tantalizing possibility of future detections of both black holes and naked singularities in this mass range. Existence of naked singularities is a topical and fundamental physics issue, but their formation mechanism is not yet clear. Here, we show that some white dwarfs can realistically transmute into black holes and naked singularities with a wide range of near- and sub-solar-mass values by capturing asymmetric or non-self-annihilating primordial dark matter (PDM) particles. We argue that, while a type Ia supernova due to the accumulation of dark matter at the core of a white dwarf could also be a possibility, the transmutation of a white dwarf into a black hole or a naked singularity is a viable consequence of the capture of non-self-annihilating PDM particles. These white dwarf transmutations can have a significant role in probing the physics of dark matter and compact objects, and could be tested using the rates and locations of mergers over the cosmological time scale.
DOI
10.1088/1475-7516/2024/06/007
Publication Date
6-1-2024
Recommended Citation
Chakraborty, Chandrachur and Bhattacharyya, Sudip, "Near- and sub-solar-mass naked singularities and black holes from transmutation of white dwarfs" (2024). Open Access archive. 10377.
https://impressions.manipal.edu/open-access-archive/10377
