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Related papers: Note on galaxy catalogues in UHECR flux modelling

200 papers

We explore the effects of Bumblebee gravity on the propagation of ultra-high energy cosmic rays (UHECRs) using astrophysical sources modelled in the Unger-Farrar-Anchordoqui (UFA) framework (2015), which includes star formation rate (SFR),…

High Energy Astrophysical Phenomena · Physics 2025-09-03 Swaraj Pratim Sarmah. Pranjal Sarmah , Umananda Dev Goswami

Recently the AGASA Collaboration presented data suggesting a significant clustering of ultra-high energy cosmic rays coming from the outer Galaxy region. In this paper we calculate expected cosmic ray arrival distributions for several…

Astrophysics · Physics 2011-05-12 Jaime Alvarez-Muñiz , Ralph Engel , Todor Stanev

The arrival directions of cosmic rays detected by the Pierre Auger Observatory (Auger) with energies above 39~EeV were recently reported to correlate with the positions of 23 nearby starburst galaxies (SBGs): in their best-fit model, 9.7\%…

High Energy Astrophysical Phenomena · Physics 2019-05-21 Armando di Matteo , Toshihiro Fujii , Kazumasa Kawata

In this paper, we motivate the use of galaxy clustering measurements using photometric redshift information, including a contribution from flux magnification, as a probe of cosmology. We present cosmological forecasts when clustering data…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Christopher Duncan , Benjamin Joachimi , Alan Heavens , Catherine Heymans , Hendrik Hildebrandt

We briefly review current theoretical and experimental status of Ultra-High Energy Cosmic Rays. We show that ``top-down'' mechanisms of UHE CR which involve heavy relic particle-like objects predict Galactic anisotropy of highest energy…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. L. Dubovsky , P. G. Tinyakov

We present $[OIII]/H_{\rm \beta}$ emision line flux ratio predictions for galaxies at $z \sim 7-9$ using the MAPPINGS V v5.2.0 photoionization modelling code combined with an analytic galaxy formation model. Properties such as pressure and…

Astrophysics of Galaxies · Physics 2025-04-08 Aadarsh Pathak , J. Stuart B. Wyithe , Ralph S. Sutherland , L. J Kewley

We explore the possibility of a local origin for ultra high energy cosmic rays (UHECRs). Using the catalogue of Karachentsev et al. including nearby galaxies with distances less than 10Mpc (Local Volume), we search for a correlation with…

High Energy Astrophysical Phenomena · Physics 2009-10-16 Antonio J. Cuesta , Francisco Prada

We perform an autocorrelation study of the Auger data with the aim to constrain the number density n_s of ultrahigh energy cosmic ray (UHECR) sources, estimating at the same time the effect on $n_s$ of the systematic energy scale…

Astrophysics · Physics 2009-08-24 A. Cuoco , S. Hannestad , T. Haugboelle , M. Kachelriess , P. D. Serpico

One of the main goals of investigations using present and future giant extensive air shower (EAS) arrays is the mass composition of ultra-high energy cosmic rays (UHECRs). A new approach to the problem is presented, combining analysis of…

Instrumentation and Methods for Astrophysics · Physics 2013-01-21 A. A. Ivanov

The Galactic magnetic field, locally observed to be on the order of a few $\mu$G, is sufficiently strong to induce deflections in the arrival directions of ultra-high energy cosmic rays. We present a method that establishes measures of…

Instrumentation and Methods for Astrophysics · Physics 2015-06-05 Michael S. Sutherland , Brian M. Baughman , James J. Beatty

We consider the astrophysical implications of the diffusion equation solution for Ultra-High Energy Cosmic Rays (UHECR) in the expanding universe, obtained in paper I (V.Berezinsky & A.Gazizov, ApJ 643 (2006) 8). The UHECR spectra are…

Astrophysics · Physics 2009-03-19 V. Berezinsky , A. Z. Gazizov

Ultra-high energy cosmic rays (UHECRs) are atomic nuclei with energies over ten million times energies accessible to human-made particle accelerators. Evidence suggests that they originate from relatively nearby extragalactic sources, but…

High Energy Astrophysical Phenomena · Physics 2013-12-02 Kunlaya Soiaporn , David Chernoff , Thomas Loredo , David Ruppert , Ira Wasserman

The sources of ultrahigh-energy cosmic rays (UHECRs) have been stubbornly elusive. However, the latest report of the Pierre Auger Observatory provides a compelling indication for a possible correlation between the arrival directions of…

High Energy Astrophysical Phenomena · Physics 2018-03-28 Luis Alfredo Anchordoqui

The James Webb Space Telescope (JWST) has enabled the discovery of a significant population of galaxies at z > 10. Our understanding of the astrophysical properties of these galaxies relies on fitting templates developed using models…

Instrumentation and Methods for Astrophysics · Physics 2026-04-09 Thorbjørn Clausen , Charles L. Steinhardt , Arden Shao , Gaurav Senthil Kumar

After over 60 years, the powerful engines that accelerate ultra-high-energy cosmic rays (UHECRs) to the formidable energies at which we observe them from Earth remain mysterious. Assuming standard physics, we expect UHECR sources to lie…

The origin of ultrahigh energy cosmic rays (UHECRs) is an open question. In this proceeding, we first review the general physical requirements that a source must meet for acceleration to 10-100 EeV, including the consideration that the…

High Energy Astrophysical Phenomena · Physics 2019-06-12 James H. Matthews , Anthony R. Bell , Anabella T. Araudo , Katherine M. Blundell

We present an investigation of the propagation of Ultra High Energy Cosmic Rays (UHECRs) in extragalactic magnetic field (EGMF). We use the IRAS PSCz catalogue in order to reconstruct EGMF taking into account power-law dependence between…

Astrophysics · Physics 2007-05-23 Andrii Elyiv

We present a simple yet powerful method to test models of cosmic-ray (CR) origin using the distribution of CR arrival directions. The method is statistically unambiguous in the sense that it is binless and does not invoke scanning over…

Astrophysics · Physics 2014-11-18 Hylke B. J. Koers , Peter Tinyakov

We study the nature of cluster selection in Sunyaev-Zel'dovich (SZ) surveys, focusing on single frequency observations and using Monte Carlo simulations incorporating instrumental effects, primary cosmic microwave background (CMB)…

Astrophysics · Physics 2009-11-10 J. -B. Melin , J. G. Bartlett , J. Delabrouille

This paper proposes and discusses a test of the chemical composition of ultra-high energy cosmic rays that relies on the anisotropy patterns measured as a function of energy. In particular, we show that if one records an anisotropy signal…

High Energy Astrophysical Phenomena · Physics 2009-11-13 Martin Lemoine , Eli Waxman