Neutrino Emission from Magnetized Microquasar Jets

Abstract

The hadronic jets in a microquasar stellar system are modeled with the relativistic hydrocode PLUTO. We focus on neutrino emission from such jets produced by fast proton (nonthermal) collisions on thermal ones within the hadronic jet. We adopt a semianalytical approximation for the description of the secondary particles produced from p-p collisions and develop appropriate algorithms using the aforementioned injected protons as input. As a concrete example, we consider the SS-433 X-ray binary system for which several observations have been made the last decades. In contrast to the preset distribution of the fast protons along the jet employed in our previous works, in the present paper, we simulated it by using a power-law fast proton distribution along the PLUTO hydrocode. This distribution gradually sweeps aside the surrounding winds, during the jet advance through the computational grid. As a first step, in the present work, the neutrino energy spectrum is extracted from the model jet, facilitating a range of potential dynamical simulations in currently interesting microquasar jet systems.

Simulations of Gamma-Ray Emission from Magnetized Microquasar Jets

“…(β ≡ u/c, with u = |u| being the magnitude of the total velocity vector) where n sp is in protons/cm 3 [28]. From Eq.…”

“…In conclusion, one can work with laboratory frame quantities only, which are also the jet model quantities (for other symbols the reader is referred to Ref. [12,13,27,28] D.…”

“…For a detailed discussion related to important phenomena of the jet's interaction zone with nearby winds, the reader is referred to the Refs. [12,13,27,28] and references therein.…”

Consequences of Massive Neutrino to Astrophysics and Cosmology

“…that are produced by binary stars where one of them is a compact object are discussed [35,36]. These systems are called microquasars.…”

Simulated Neutrino Signals of Low and Intermediate Energy Neutrinos on Cd Detectors

“…Due to the fact that neutrinos interact very weakly, they are unique messengers from astrophysical sources (the Earth, the Sun, the supernovae and other stars) [1,2,21] allowing us to investigate deep into the astrophysical objects [21,[27][28][29]. In the near future, remarkably sensitive detectors as liquid-scintillator detectors, liquid argon time projection chambers and water-Cherenkov detectors would operate aiming to study neutrino physics issues of astrophysical neutrino sources [19,20,26] (for higher energy neutrinos, like e.g.…”