Anisotropies of Diffusive Ultra-high Energy Cosmic Rays in $f(R)$ Gravity Theory

Abstract

Understanding the anisotropy of ultra high-energy cosmic rays (UHECRs) is crucial for unraveling the origins and propagation mechanisms of these enigmatic particles. In this work, we studied the dipolar anisotropy of UHECRs in the diffusive regime by considering three cosmological models: the standard $\Lambda$CDM model, $f(R)$ gravity power-law model and the Starobinsky model. This work aims to see the role of the $f(R)$ gravity theory in understanding the anisotropy of UHECRs without condoning the standard cosmology. We found that the amplitude of the dipolar anisotropy is sensitive to these cosmological models, with the $f(R)$ power-law model predicting the largest amplitude, while the $\Lambda$CDM model predicting the smallest amplitude at most of the energies in the range considered. The predicted amplitude of the Starobinsky model lies within the range of the $\Lambda$CDM one. This work not only provides a way for exploration of UHECRs anisotropy within different cosmological contexts but also may pave the way for new avenues of research at the intersection of high-energy astrophysics.

arXiv comment15 pages, 7 figures; published version

References in corpus (81)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Observation of Gravitational Waves from a Binary Black Hole Merger
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Dynamics of dark energy
• f(R) Theories Of Gravity
• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole
• First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
• First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
• Disappearing cosmological constant in f(R) gravity
• First M87 Event Horizon Telescope Results. II. Array and Instrumentation
• First M87 Event Horizon Telescope Results. III. Data Processing and Calibration
• First Observation of the Greisen-Zatsepin-Kuzmin Suppression
• Clusters of galaxies : observational properties of the diffuse radio emission
• Observation of the suppression of the flux of cosmic rays above 4x10^19eV
• The Origin of Galactic Cosmic Rays
• On astrophysical solution to ultra high energy cosmic rays
• Observation of a Large-scale Anisotropy in the Arrival Directions of Cosmic Rays above $8\times 10^{18}$ eV
• Depth of Maximum of Air-Shower Profiles at the Pierre Auger Observatory: Measurements at Energies above 10^17.8 eV
• Depth of Maximum of Air-Shower Profiles at the Pierre Auger Observatory: Composition Implications
• The Cosmic Ray Energy Spectrum Observed with the Surface Detector of the Telescope Array Experiment
• Indication of anisotropy in arrival directions of ultra-high-energy cosmic rays through comparison to the flux pattern of extragalactic gamma-ray sources
• Measurement of the cosmic-ray energy spectrum above $2.5\times 10^{18}$ eV using the Pierre Auger Observatory
• Ultra-High Energy Cosmic Ray Probes of Large Scale Structure and Magnetic Fields
• Features of the energy spectrum of cosmic rays above $2.5\times 10^{18}$ eV using the Pierre Auger Observatory
• Spectrum of cosmic rays, produced in supernova remnants
• Upper limit on the cosmic-ray photon fraction at EeV energies from the Pierre Auger Observatory
• The Dipole Anisotropy of the 2 Micron All-Sky Redshift Survey
• Large-scale cosmic-ray anisotropies above 4 EeV measured by the Pierre Auger Observatory
• Simulations of extragalactic magnetic fields and of their observables
• Extra-galactic magnetic fields and the second knee in the cosmic-ray spectrum
• The energy spectrum of cosmic rays beyond the turn-down around $10^{17}$ eV as measured with the surface detector of the Pierre Auger Observatory
• Probing the origin of ultra-high-energy cosmic rays with neutrinos in the EeV energy range using the Pierre Auger Observatory
• Search for a diffuse flux of astrophysical muon neutrinos with the IceCube 59-string configuration
• Constraints on the origin of cosmic rays above $10^{18}$ eV from large scale anisotropy searches in data of the Pierre Auger Observatory
• Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory
• Interpretation of the Depths of Maximum of Extensive Air Showers Measured by the Pierre Auger Observatory
• Origin of Small-Scale Anisotropies in Galactic Cosmic Rays
• A Search for Point Sources of EeV Neutrons
• Anisotropies of ultra-high energy cosmic rays diffusing from extragalactic sources
• The need for a local source of UHE CR nuclei
• Search for Point-Like Sources of Ultra-High Energy Neutrinos at the Pierre Auger Observatory and Improved Limit on the Diffuse Flux of Tau Neutrinos
• Diffusion of Cosmic Rays in Expanding Universe. (I)
• Cosmic-ray anisotropies in right ascension measured by the Pierre Auger Observatory
• Ultra-High Energy Cosmic Ray Propagation in the Local Supercluster
• A new f(R) Gravity Model and properties of Gravitational Waves in it
• A Magnetized Local Supercluster and the Origin of the Highest Energy Cosmic Rays
• Fornax A, Centaurus A and other radio galaxies as sources of ultra-high energy cosmic rays
• Magnetic diffusion effects on the Ultra-High Energy Cosmic Ray spectrum and composition
• Thermodynamics and Shadows of GUP-corrected Black Holes with Topological Defects in Bumblebee Gravity
• All-Sky Measurement of the Anisotropy of Cosmic Rays at 10 TeV and Mapping of the Local Interstellar Magnetic Field
• Progress in high-energy cosmic ray physics
• Upper limit on the flux of photons with energies above 10^19 eV using the Telescope Array surface detector
• The Compton-Getting effect on ultra-high energy cosmic rays of cosmological origin
• Anisotropies of ultra-high energy cosmic ray nuclei diffusing from extragalactic sources
• Ultrahigh energy cosmic rays from a nearby extragalactic source in the diffusive regime
• Search for EeV Protons of Galactic Origin
• Turbulent Magnetic Field Amplification by the Interaction of Shock Wave and Inhomogeneous Medium
• Anisotropic LRS-BI Universe with $f(Q)$ gravity theory
• Evidence of Intermediate-Scale Energy Spectrum Anisotropy of Cosmic Rays E$\ge$10${}^{19.2}$ eV with the Telescope Array Surface Detector
• Strange stars in $f(\mathcal{R})$ gravity Palatini formalism and gravitational wave echoes from them
• Search for Large-scale Anisotropy on Arrival Directions of Ultra-high-energy Cosmic Rays Observed with the Telescope Array Experiment
• Cosmology with a new f(R) gravity model in Palatini formalism
• Cosmic-Ray Anisotropy from Large Scale Structure and the effect of magnetic horizons
• Revisiting the distance to the nearest UHECR source: Effects of extra-galactic magnetic fields
• Cosmological dynamics of $f(R)$ gravity scalar degree of freedom in Einstein frame
• Anisotropies of ultrahigh-energy cosmic rays in a scenario with nearby sources
• Formation of caustics in Dirac-Born-Infeld type scalar field systems
• Deflection angle, quasinormal modes and optical properties of a de Sitter black hole in $f(\mathcal{T},\mathcal{B})$ gravity
• Galactic rotation dynamics in a new $f(\mathcal{R})$ gravity model
• The UHECR dipole and quadrupole in the latest data from the original Auger and TA surface detectors
• Cosmic ray anisotropies from transient extragalactic sources
• Turbulent magnetic fields in merging clusters: A case study of Abell 2146
• Measurements and implications of cosmic ray anisotropies from TeV to trans-EeV energies
• Propagation and Fluxes of Ultra High Energy Cosmic Rays in f(R) Gravity Theory
• Large-scale anisotropies of extragalactic cosmic rays below the ankle
• Cosmic Ray Small-Scale Anisotropies in Quasi-Linear Theory
• Cosmic ray propagation in the Universe in presence of a random magnetic field

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• Magnetic Suppression of Cosmic Rays' Flux in $\mathbf{f}(\mathbf{R})$ and $\mathbf{f}(\mathbf{Q})$ Theories of Gravity
• Observational constraints on cosmological parameters in the Bianchi type III Universe with f(R,T) gravity theory
• Analysing Ultra High Energy Cosmic Rays' Anisotropy in $\mathbf{f}(\mathbf{R},\mathbf{T})$ Gravity Theory
• Ultra-high energy cosmic rays with UFA-15 source model in Bumblebee gravity theory
• Phase space analysis of Bianchi III Universe with $f(R,T)$ gravity theory
• Modelling Cosmic Rays Flux with Pierre Auger and Telescope Array Data in $\mathbf{f}(\mathbf{R})$ and $\mathbf{f}(\mathbf{Q})$ Theories of Gravity