Physics of Gravitational Waves by Arun Kenath & Chandra Sivaram

Author:Arun Kenath & Chandra Sivaram
Language: eng
Format: epub
ISBN: 9783031304637
Publisher: Springer International Publishing

4. Thermal Gravitational Waves

Arun Kenath1 and Chandra Sivaram2

(1)Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, Karnataka, India

(2)Indian Institute of Astrophysics, Bengaluru, India

Arun Kenath

Email: [email protected]

Abstract

High-frequency (thermal) gravitational waves from stellar cores, jets, gamma-ray bursts, primordial black holes, etc., are not often discussed. Here we give a detailed account of the physics involved and give estimates of such emissions from the above-mentioned sources. We estimate the backgrounds from these sources. We expect gravitational waves from the early universe going back to the Planck epoch, including from inflation. We estimate the redshifted integrated thermal background gravitational waves from these sources.

Thermal gravitational waves are a theoretical type of gravitational waves that are produced by the thermal motion of matter. These waves are extremely small and difficult to detect, but they are predicted by the theory of general relativity. These waves are predicted to arise due to the random motion of particles in a system, such as the motion of atoms in a gas or the motion of stars in a galaxy. Thermal gravitational waves are different from the gravitational waves that have been detected by LIGO and Virgo, which are generated by the acceleration of massive objects, such as black holes or neutron stars. Thermal gravitational waves would have a very high frequency and would be extremely difficult to detect with current technology. However, the existence of these waves could provide valuable insight into the behaviour of matter at very small scales.

Due to Coulomb collisions in the core of the stars, thermal gravitational waves can be generated. These thermal gravitational waves can arise in white dwarfs and neutron stars due to the fermion collisions in the dense degenerate Fermi gas. Such high frequency thermal gravitational waves are also produced during collisions in a gamma-ray burst or in the jets of a rotating black hole.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.