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19952026
Showing astro-ph.HEShow all

213 papers · 1 filter

astro-ph.HE2025

Stellar critical parameters in the uniform density approximation

G. S. Bisnovatyi-Kogan, E. A. Patraman

Stellar models are calculated in the approximation of a uniform density distribution. Variational method was used for determination of the boundary of a stability loss, for stellar…

astro-ph.HE2025

Energy spectrum and mass composition of the primary cosmic rays based on the intensity of muon bundles detected in the NEVOD-DECOR experiment

A. G. Bogdanov, A. Chiavassa, D. M. Gromushkin +14

The results of the analysis of the NEVOD-DECOR data on the study of inclined muon bundles (with zenith angles from 40 to 85 degrees) of cosmic rays for the period from 2012 to 2023…

astro-ph.HE2025★ 1 cited

Constraints on the diffuse flux of multi-PeV astrophysical neutrinos obtained with the Baikal Gigaton Volume Detector

V. A. Allakhverdyan, A. D. Avrorin, A. V. Avrorin +69

Various theoretical models predict cosmic neutrinos with multi-PeV energies. The recent detection of a ~10^17 eV neutrino in the KM3NeT experiment suggests that these energetic par…

astro-ph.HE2024★ 10 cited

Magnetorotational neutron star kicks

Ilya A. Kondratyev, Sergey G. Moiseenko, Gennady S. Bisnovatyi-Kogan

High velocity neutron stars, observed as rapidly moving radio-pulsars, are believed to gain high linear velocities -- kicks -- in aspherical supernova explosions. The mechanism of…

astro-ph.HE2023★ 2 cited

Neutron stars in a uniform density approximation

G. S. Bisnovatyi-Kogan, E. A. Patraman

Models of neutron stars are considered in the case of a uniform density distribution. An algebraic equation, valid for any equation of state, is obtained. This equation allows one…

astro-ph.HE2023★ 2 cited

Proposition of FSR Photon Suppression Employing a Two-Positron Decay Dark Matter Model to Explain Positron Anomaly in Cosmic Rays

Ramin Barak, Konstantin Belotsky, Ekaterina Shlepkina

The origin of an anomalous excess of high-energy (about 100 GeV and higher) positrons in cosmic rays is one of the rare problems in this field, which is proposed to be solved with…

astro-ph.HE2023★ 3 cited

Nonlinear Hall effect in the stationary cylinder with a radial heat flux

G. S. Bisnovatyi-Kogan, M. V. Glushikhina

A conducting cylinder with a uniform magnetic field along its axis and radial temperature gradient is considered at the stationary state. At large temperature gradients the azimuth…

astro-ph.HE2023★ 2 cited

UHECR Signatures and Sources

Daniele Fargion, Pier Giorgio De Sanctis Lucentini, Maxim Y. Khlopov

Abstract. We discuss recent results on the clustering, composition and distribution of Ultra-High Energy Cosmic Rays (UHECR) in the sky; from the energy of several tens of EeV in t…

astro-ph.HE2023★ 7 cited

Borexino's search for low-energy neutrinos associated with gravitational wave events from GWTC-3 database

BOREXINO Collaboration, D. Basilico, G. Bellini +72

The search for neutrino events in correlation with gravitational wave (GW) events for three observing runs (O1, O2 and O3) from 09/2015 to 03/2020 has been performed using the Bore…

astro-ph.HE2022

Cosmic ray anisotropy study by means of detection of muon bundles

G. Trinchero, M. B. Amelchakov, A. G. Bogdanov +11

In this work, we use muon bundles which are formed in extensive air showers and detected at the ground level as a tool for searching anisotropy of high energy cosmic rays. Such cho…

astro-ph.HE2022★ 90 cited

A lower bound on intergalactic magnetic fields from time variability of 1ES 0229+200 from MAGIC and Fermi/LAT observations

MAGIC Collaboration, V. A. Acciari, I. Agudo +206

Extended and delayed emission around distant TeV sources induced by the effects of propagation of gamma rays through the intergalactic medium can be used for the measurement of the…

astro-ph.HE2022★ 2 cited

Cosmic Gamma-Ray Bursts Detected in the RELEC Experiment onboard the Vernov Satellite

A. V. Bogomolov, V. V. Bogomolov, A. F. Iyudin +7

The RELEC scientific instrumentation onboard the Vernov spacecraft launched on July 8, 2014, included the DRGE gamma-ray and electron spectrometer. This instrument incorporates a s…

astro-ph.HE2022★ 24 cited

A low-threshold ultrahigh-energy neutrino search with the Askaryan Radio Array

P. Allison, S. Archambault, J. J. Beatty +77

In the pursuit of the measurement of the still-elusive ultrahigh-energy (UHE) neutrino flux at energies of order EeV, detectors using the in-ice Askaryan radio technique have incre…

astro-ph.HE2022★ 23 cited

Helium fluxes measured by the PAMELA experiment from the minimum to the maximum solar activity for solar cycle 24

N. Marcelli, M. Boezio, A. Lenni +53

Time-dependent energy spectra of galactic cosmic rays (GCRs) carry fundamental information regarding their origin and propagation. When observed at the Earth, these spectra are sig…

astro-ph.HE2021★ 19 cited

Analysis of a Tau Neutrino Origin for the Near-Horizon Air Shower Events Observed by the Fourth Flight of the Antarctic Impulsive Transient Antenna (ANITA)

R. Prechelt, S. A. Wissel, A. Romero-Wolf +65

We study in detail the sensitivity of the Antarctic Impulsive Transient Antenna (ANITA) to possible point source fluxes detected via -lepton-induced air showers. This inve…

astro-ph.HE2021★ 2 cited

Researching of magnetic cutoff for local sources of charged particles in the halo of the Galaxy

M. Yu. Khlopov, A. O. Kirichenko, A. G. Mayorov

Models of highly inhomogeneous baryosynthesis of the baryonic asymmetric Universe allow for the existence of macroscopic domains of antimatter, which could evolve in a globular clu…

astro-ph.HE2021★ 4 cited

Detectability of large correlation length inflationary magnetic field with Cherenkov telescopes

Alexander Korochkin, Andrii Neronov, Guilhem Lavaux +2

Magnetic fields occupying the voids of the large scale structure may be a relic from the Early Universe originating from either Inflation or from cosmological phase transitions. We…

astro-ph.HE2021

Free electron gas and electron-positron pair equilibrium in magnetic field

Gennady S. Bisnovatyi-Kogan, Ilya A. Kondratyev

The thermodynamic properties of electron gas under the extreme conditions of high temperature, high matter density, and/or a strong magnetic field largely determine the behaviour o…

astro-ph.HE2021★ 60 cited

Energy spectra of secondaries in proton-proton interactions

S. Koldobskiy, M. Kachelrieß, A. Lskavyan +3

We compare the predictions of AAfrag for the spectra of secondary photons, neutrinos, electrons, and positrons produced in proton-proton collisions to those of the parameterisation…

astro-ph.HE2021★ 2 cited

Dynamic model of a non-equilibrium chemical composition formation in the shell of single neutron stars

A. Yu. Ignatovskiy, G. S. Bisnovatyi-Kogan

The process of a non-equilibrium chemical composition formation in the crust of a new born neutron star is considered, during cooling due to neutrino energy losses. A model is cons…

astro-ph.HE2021★ 36 cited

Reconstructing the neutrino energy for in-ice radio detectors

J. A. Aguilar, P. Allison, J. J. Beatty +56

Starting in summer 2021, the Radio Neutrino Observatory in Greenland (RNO-G) will search for astrophysical neutrinos at energies >10 PeV by detecting the radio emission from partic…

astro-ph.HE2021★ 11 cited

Propagation dynamics of successive emissions in laboratory and astrophysical jets and problem of their collimation

I. Kalashnikov, P. Chardonnet, V. Chechetkin +2

The paper presents the results of numerical simulation of the propagation of a sequence of plasma knots in laboratory conditions and the astrophysical environment. The physical and…

astro-ph.HE2021★ 3 cited

Hot spots in the neutrino flux created by cosmic rays from Cygnus and Vela?

M. Bouyahiaoui, M. Kachelriess, D. V. Semikoz

An analysis of 7.5 years of data in the high-energy starting event sample has been recently published by the IceCube collaboration. The hottest spot in a search for neutrino source…

astro-ph.HE2021★ 21 cited

Pion decay model of TIBET-AS PeV gamma-ray signal

Sergey Koldobskiy, Andrii Neronov, Dmitri Semikoz

Tibet-AS collaboration has recently reported a measurement of diffuse -ray flux from the outer Galactic disk in the energy range reaching PeV. We complement this measurement…