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Title: Inverse problem for extragalactic transport of ultra-high energy cosmic rays

Abstract

The energy spectra and composition of ultra-high energy cosmic rays are changing in a course of propagation in the expanding Universe filled with background radiation. We developed a numerical code for solution of inverse problem for cosmic-ray transport equations that allows the determination of average source spectra of different nuclei from the cosmic ray spectra observed at the Earth. Employing this approach, the injection spectra of protons and Iron nuclei in extragalactic sources are found assuming that only these species are accelerated at the source. The data from the Auger experiment and the combined data from the Telescope Array + HiRes experiments are used to illustrate the method.

Authors:
; ;  [1]
  1. Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Russian Academy of Sciences (IZMIRAN), Troitsk, Moscow, 142190 (Russian Federation)
Publication Date:
OSTI Identifier:
22525917
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 03; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BACKGROUND RADIATION; COSMIC RADIATION; COSMIC RAY PROPAGATION; ENERGY SPECTRA; INFLATIONARY UNIVERSE; INVERSE SCATTERING PROBLEM; IRON; TELESCOPES; TRANSPORT THEORY; UNIVERSE

Citation Formats

Ptuskin, V.S., Rogovaya, S.I., and Zirakashvili, V.N., E-mail: vptuskin@izmiran.ru, E-mail: rogovaya@izmiran.ru, E-mail: zirak@izmiran.ru. Inverse problem for extragalactic transport of ultra-high energy cosmic rays. United States: N. p., 2015. Web. doi:10.1088/1475-7516/2015/03/054.
Ptuskin, V.S., Rogovaya, S.I., & Zirakashvili, V.N., E-mail: vptuskin@izmiran.ru, E-mail: rogovaya@izmiran.ru, E-mail: zirak@izmiran.ru. Inverse problem for extragalactic transport of ultra-high energy cosmic rays. United States. doi:10.1088/1475-7516/2015/03/054.
Ptuskin, V.S., Rogovaya, S.I., and Zirakashvili, V.N., E-mail: vptuskin@izmiran.ru, E-mail: rogovaya@izmiran.ru, E-mail: zirak@izmiran.ru. Sun . "Inverse problem for extragalactic transport of ultra-high energy cosmic rays". United States. doi:10.1088/1475-7516/2015/03/054.
@article{osti_22525917,
title = {Inverse problem for extragalactic transport of ultra-high energy cosmic rays},
author = {Ptuskin, V.S. and Rogovaya, S.I. and Zirakashvili, V.N., E-mail: vptuskin@izmiran.ru, E-mail: rogovaya@izmiran.ru, E-mail: zirak@izmiran.ru},
abstractNote = {The energy spectra and composition of ultra-high energy cosmic rays are changing in a course of propagation in the expanding Universe filled with background radiation. We developed a numerical code for solution of inverse problem for cosmic-ray transport equations that allows the determination of average source spectra of different nuclei from the cosmic ray spectra observed at the Earth. Employing this approach, the injection spectra of protons and Iron nuclei in extragalactic sources are found assuming that only these species are accelerated at the source. The data from the Auger experiment and the combined data from the Telescope Array + HiRes experiments are used to illustrate the method.},
doi = {10.1088/1475-7516/2015/03/054},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 03,
volume = 2015,
place = {United States},
year = {Sun Mar 01 00:00:00 EST 2015},
month = {Sun Mar 01 00:00:00 EST 2015}
}