Magnetic fields in a hot dense neutrino plasma and the Gravitational Waves

Autor:	Pandey, Arun Kumar, Natwariya, Pravin Kumar, Bhatt, Jitesh R
Rok vydání:	2019
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics
Zdroj:	Phys. Rev. D 101, 023531 (2020)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.101.023531
Popis:	In the present work, we have studied the spectrum of the primordial gravitational waves due to magnetic instability in the presence of neutrino asymmetry. The magnetic instability generates a helical magnetic field on a large scale. The anisotropic stress generated by the magnetic field shown to be a source of primordial gravitational waves (GWs) at the time of matter-neutrino decoupling. We expect that the theoretically predicted GWs by this mechanism may be detected by Square Kilometer Array (SKA) or pulsar time array (PTA) observations. We also compare our findings with the results obtained by the earlier work where the effect of magnetic instability was not considered. Comment: 9 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1911.05412 Zobrazit plný text záznamu View this record from Arxiv