High Energy Neutrino Emission from Astrophysical Jets in the Galaxy

Smponias, Theodoros; Kosmas, Odysseas

doi:10.1155/2015/921757

Cited by 24 publications

(64 citation statements)

References 22 publications

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“…In hadronic micro-quasar jets, the proton-proton interactions with the subsequent decays of the secondary particles, mostly π ± mesons, produce high energy neutrinos. These collisions result also in the production of high-energy gamma rays, through the neutral pion (π 0 ) decay, as discussed in previous works [7,8,9,10,11]. Recent simulations of high energy p-p interactions in terrestrial laboratories provide quite accurate energy distributions of secondary products in the high energy range (above 100 GeV) and determine parametric expressions of energy spectra for secondary particles like π 0 and π ± mesons, neutrinos but also for gamma rays and electrons produced in inelastic p-p collisions [11,12].…”

Section: Introductionmentioning

confidence: 55%

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Neutrino Emission from Magnetized Microquasar Jets

Smponias

Kosmas

2017

Advances in High Energy Physics

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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.

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Section: Introductionmentioning

confidence: 55%

“…In the case of black hole micro-quasars (when the compact object is a black hole) the stellar system provides excellent testing grounds for black hole theories. Therefore, an improved understanding of the dynamical astrophysical conditions within the jets in MQs is of significant importance [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

Neutrino Emission from Magnetized Microquasar Jets

Smponias

Kosmas

2017

Advances in High Energy Physics

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“…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.…”

Section: The Current Density At Observer's Framementioning

confidence: 99%

Simulations of Gamma-Ray Emission from Magnetized Microquasar Jets

Kosmas

Smponias

2018

Advances in High Energy Physics

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In this work, we simulate γ-rays created in the hadronic jets of the compact object in binary stellar systems known as microquasars. We utilize as main computational tool the 3-D relativistic magneto-hydro-dynamical code PLUTO combined with in house derived codes. Our simulated experiments refer to the SS433 X-ray binary, a stellar system in which hadronic jets have been observed. We examine two new model configurations that employ hadron-based emission mechanisms. The simulations aim to explore the dependence of the γ-ray emissions on the dynamical as well as the radiative properties of the jet (hydrodynamic parameters of the mass-flow density, gas-pressure, temperature of the ejected matter, high energy proton population inside the jet plasma, etc.). The results of the two new scenarios of initial conditions for the micro-quasar stellar system studied, are compared to those of previously considered scenarios. * odysseas.kosmas@manchester.ac.uk

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“…[35,36]). While neutrinos are a valuable tool for deep sky investigations [37], nuclear parameters such as the neutron skin can be crucial for understanding neutron star dynamics [38]. In this work we explore how such nuclear parameters can be probed at CEνNS experiments.…”

Section: Introductionmentioning

confidence: 99%

Constraining nuclear physics parameters with current and future COHERENT data

et al. 2020

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Motivated by the recent observation of coherent elastic neutrino-nucleus scattering (CEνNS) at the COHERENT experiment, our goal is to explore its potential in probing important nuclear structure parameters. We show that the recent COHERENT data offers unique opportunities to investigate the neutron nuclear form factor. Our present calculations are based on the deformed Shell Model (DSM) method which leads to a better fit of the recent CEνNS data, as compared to known phenomenological form factors such as the Helm-type, symmetrized Fermi and Klein-Nystrand. The attainable sensitivities and the prospects of improvement during the next phase of the COHERENT experiment are also considered and analyzed in the framework of two upgrade scenarios.

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High Energy Neutrino Emission from Astrophysical Jets in the Galaxy

Cited by 24 publications

References 22 publications

Neutrino Emission from Magnetized Microquasar Jets

Neutrino Emission from Magnetized Microquasar Jets

Simulations of Gamma-Ray Emission from Magnetized Microquasar Jets

Constraining nuclear physics parameters with current and future COHERENT data

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