Kalita, S and Mukhopadhyay, B (2022) Massive Neutron Stars and White Dwarfs as Noncommutative Fuzzy Spheres. In: Universe, 8 (8).
|
PDF
universe_8-8_2022.pdf - Published Version Download (428kB) | Preview |
Abstract
Over the last couple of decades, there have been direct and indirect evidences for massive compact objects than their conventional counterparts. A couple of such examples are super-Chandrasekhar white dwarfs and massive neutron stars. The observations of more than a dozen peculiar over-luminous type Ia supernovae predict their origins from super-Chandrasekhar white dwarf progenitors. On the other hand, recent gravitational wave detection and some pulsar observations provide arguments for massive neutron stars, lying in the famous mass-gap between lowest astrophysical black hole and conventional highest neutron star masses. We show that the idea of a squashed fuzzy sphere, which brings in noncommutative geometry, can self-consistently explain either of the massive objects as if they are actually fuzzy or squashed fuzzy spheres. Noncommutative geometry is a branch of quantum gravity. If the above proposal is correct, it will provide observational evidences for noncommutativity.
| Item Type: | Journal Article |
|---|---|
| Publication: | Universe |
| Publisher: | MDPI |
| Additional Information: | The copyright for this article belongs to the Authors. |
| Keywords: | Chandrasekhar limit; equation of state; neutron star; noncommutative geometry; white dwarf |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 24 Sep 2022 03:37 |
| Last Modified: | 24 Sep 2022 03:37 |
| URI: | https://eprints.iisc.ac.in/id/eprint/76659 |
Actions (login required)
 |
View Item |
