Neutrino-driven Instability of Ion Acoustic Waves in an Ultrarelativistic Degenerate Plasma

Abstract

The coupling between ion acoustic waves (IAWs) and a neutrino beam undergoing flavor oscillations in a dense, relativistically degenerate plasma is analyzed. The neutrino-driven streaming instability of the IAWs is investigated with relevance to plasma conditions at the last stage of stellar evolution in a massive supernova progenitor. The influence of neutrino beam parameters such as the energy of the incident neutrino beam and eigenfrequency of the neutrino flavor oscillations on the instability growth rate is obtained numerically. It is observed that the neutrino flavor oscillations significantly affect the neutrino-driven instability of the IAWs. Our results also indicate that the time period for the onset of the streaming neutrino-driven instability is shorter than the typical time period of a core-collapse supernova explosion. The findings of this investigation may shed new light on the understanding of the underlying physical mechanism responsible for the core-collapse supernova. Unified Astronomy Thesaurus concepts: Supernova neutrinos (1666); Neutrino oscillations (1104); Core-collapse supernovae (304); Degenerate matter (367); Relativistic fluid dynamics (1389); Plasma physics (2089)

Ion Acoustic Shocks in a Weakly Relativistic Ion-Beam Degenerate Magnetoplasma

“…Neglecting the relativistic effects in the present investigation, the dispersion relation Equation (18) of this investigation matches with the dispersion relation in the investigation of Deka and Dev [27]. Further collecting higher-order coefficients of (see Appendix A-Equations (A1)-(A5)) and eliminating higherorder terms by making use of Equations ( 14)- (17) in Equations (A1)-(A5), we obtain the following KdVB equation…”

“…The pseudo-potential approach was used to investigate arbitrary amplitude solitary waves (SWs) and double layers (DLs) in an ultra-relativistic degenerate dense dusty plasma (containing ultra-relativistic degenerate ultra-cold electron fluid, inertial ultra-cold ion fluid, and negatively charged static dust) by Mamun et al [16]. In a dense relativistically degenerate plasma, Ghai et al [17] investigated the connection between ion acoustic waves (IAWs) and a neutrino beam experiencing flavor oscillations. The effect of neutrino beam characteristics on the instability development rate was calculated numerically, including the energy of the incident neutrino beam and the eigenfrequency of neutrino flavor oscillations.…”

Analysis of hyperbolic magneto-hydrodynamic [HMHD] wave propagation through neutrino-coupled plasma

“…Recently Chatterjee et al [22] have been analyzing the role of neutrino magneto hydrodynamic instabilities under the presence of two-flavor oscillations. By many researchers, in earlier published work [1,23,24] the concept of coupling of neutrino flavour oscillation is used to investigate waves produced in magnetized and unmagnetized plasma. There are many astrophysical as well as laboratory situations, where the assumption of zero Hall current and rotation is not valid.…”

Neutrino beam driven instability of magnetosonic waves in the presence of oblique magnetic field and ion-neutral collisional effect in plasmas

“…The two stream instability has been investigated in electron plasma with neutrino beam interaction and ponderomotive force is also discussed [9]. Recently, the instability of ion acoustic waves coupling with neutrino beam undergoing flavour oscillations in a ultra-relativistic degenerate plasmas has been investigated [10]. It has been noticed that neutrino flavour oscillations have significant affect on the neutrino driven ionacoustic waves instability in dense plasmas.…”

“…The neutrino emission and collective processes in magnetized plasma have also been studied [14,19]. The neutrino flavor oscillations coupling with plasmas was also considered to study electrostatic waves produced in unmagnetized or magnetized plasmas [10,15] and references therein.…”