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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 present a method to correct for deflections of ultra-high energy cosmic rays in the galactic magnetic field. We perform these corrections by simulating the expected arrival directions of protons using a parameterization of the field…

High Energy Astrophysical Phenomena · Physics 2015-10-27 Martin Erdmann , Gero Mueller , Martin Urban

Ultra-high energy cosmic rays are mostly charged particles and they are therefore deflected by magnetic fields on their path from their sources to Earth. An interesting phenomenon arising from these deflections is the appearance of multiple…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Geraldina Golup , Diego Harari , Silvia Mollerach , Esteban Roulet

The next generation of ultra high energy cosmic ray experiments will probably detect several dozens of events clustered around the direction towards each of the most powerful extragalactic sources. We develop a method which could make…

Astrophysics · Physics 2009-11-07 Diego Harari , Silvia Mollerach , Esteban Roulet

Substantial amount of information both on the source and on characteristics of intercepting magnetic fields is encoded in the distribution in arrival times, directions, and energies of charged ultra-high energy cosmic rays from discrete…

Astrophysics · Physics 2009-10-30 Guenter Sigl

We study the influence of the regular component of the Galactic magnetic field (GMF) on the arrival directions of ultra-high energy cosmic rays (UHECRs). We find that, if the angular resolution of current experiments has to be fully…

Astrophysics · Physics 2009-11-13 M. Kachelriess , P. D. Serpico , M. Teshima

A new method for measuring the large-scale structure of the Galactic magnetic field is presented. The Galactic magnetic field has been probed through the Galactic disk with near-infrared starlight polarimetry, however the distance to each…

Astrophysics of Galaxies · Physics 2015-06-22 Michael D. Pavel

The deflection of ultra-high energy cosmic rays depends on the shape of the injection spectrum of the source and the pervasive cosmic magnetic fields. In this work it is applied the wavelet transform on the sphere to search for energy…

Instrumentation and Methods for Astrophysics · Physics 2012-04-03 Rafael Alves Batista , Marcelo Zimbres , Ernesto Kemp

We briefly review sources of cosmic rays, their composition and spectra as well as their propagation in the galactic and extragalactic magnetic fields, both regular and fluctuating. A special attention is paid to the recent results of the…

High Energy Astrophysical Phenomena · Physics 2012-05-09 Felix Aharonian , Andrei Bykov , Etienne Parizot , Vladimir Ptuskin , Alan Watson

We present a method to measure cosmic magnetic fields with ultra high energy cosmic rays (UHECRs). We apply an advanced autocorrelation method to simulated UHECRs which includes their directional as well as energy information. Without…

High Energy Astrophysical Phenomena · Physics 2010-04-22 Martin Erdmann , Peter Schiffer

From deflections in galactic and extragalactic magnetic fields energy dependent structures in the arrival directions of ultra-high energy cosmic rays (UHECR) are expected. We propose to characterize these structures by the strength of…

Instrumentation and Methods for Astrophysics · Physics 2013-08-01 Martin Erdmann , Tobias Winchen

(abridged) Ultra-high energy cosmic rays (UHECRs) are highly energetic charged particles with energies exceeding $10^{18}$ eV. Identifying their sources and production mechanism can provide insight into many open questions in astrophysics…

High Energy Astrophysical Phenomena · Physics 2023-10-04 Alexandros Tsouros , Gordian Edenhofer , Torsten Enßlin , Michalis Mastorakis , Vasiliki Pavlidou

We predict the arrival direction distribution of cosmic rays including their deflection in the Galactic magnetic field, for several combinations of source and composition hypotheses: the sources are hard X-ray AGNs or uniformly sample the…

High Energy Astrophysical Phenomena · Physics 2013-08-20 J. Roberts , G. Farrar

The recent discoveries of several reliable events of high energy cosmic rays at an energy above 10^20 eV raise questions about their path through the nearby universe. The two analyses of the Haverah Park data set and the Akeno data set…

Astrophysics · Physics 2009-09-25 Peter L. Biermann , Hyesung Kang , Dongsu Ryu

Context: Cosmic-ray propagation is strongly dependent on the large-scale configuration of the Galactic magnetic field. In particular, the Galactic center (GC) region provides highly interesting cosmic-ray data from gamma-ray maps and it is…

Astrophysics of Galaxies · Physics 2021-01-04 Mehmet Guenduez , Julia Becker Tjus , Katia Ferrière , Ralf-Jürgen Dettmar

Locating the sources of ultra-high energy cosmic rays (UHECRs) still remains a difficult puzzle for modern astrophysics. A major hurdle in the search for the sources is the fact that UHECRs are deflected by the Galactic magnetic field…

High Energy Astrophysical Phenomena · Physics 2019-03-12 G. Magkos , V. Pavlidou

We study the effects of the galactic magnetic field on the ultra high energy cosmic ray propagation. We show that the deflections of the cosmic ray trajectories can have many important implications such as (de)magnification of the cosmic…

Astrophysics · Physics 2009-10-31 Diego Harari , Silvia Mollerach , Esteban Roulet

We consider the effects of the Galactic magnetic field on the propagation of ultra high energy cosmic rays (UHECRs). By employing two methods of trajectory simulation, we investigate the possibility that UHECRs are produced within the…

Astrophysics · Physics 2007-05-23 Sean O'Neill , Angela V. Olinto , Pasquale Blasi

We study the possibility to reconstruct the position of ultra-high energy cosmic ray sources and some properties of the magnetic field along the line of sight towards them in the case that several events from the same source are detected.…

High Energy Astrophysical Phenomena · Physics 2014-11-18 Geraldina Golup , Diego Harari , Silvia Mollerach , Esteban Roulet

We calculate the arrival direction distribution of ultra-high-energy cosmic rays (UHECRs) with a new suite of models of the Galactic magnetic field (GMF), assuming sources follow the large-scale structure of the Universe. Compared to…

High Energy Astrophysical Phenomena · Physics 2024-11-06 Teresa Bister , Glennys R. Farrar , Michael Unger
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