Extragalactic ultrahigh-energy cosmic rays. 1. Contribution from hot spots in FR-II radio galaxies

Dec, 1992
49 pages
Published in:
  • Astron.Astrophys. 272 (1993) 161-175
e-Print:
Report number:
  • PRINT-93-0165

Citations per year

199320012009201720240510152025
Abstract: (arXiv)
We consider the hot spots in FR-II galaxies as sites of first order Fermi acceleration of protons to the highest energies observed in cosmic rays. We estimate the attainable maximum energy in the hot spot region allowed by the canonical physical conditions, which are found from radio-to-optical observations (Meisenheimer et al. 1989, A&A). We calculate observable the proton flux and spectrum from this sources, using all knowledge about source distibution (Peacock 1985, MNRAS) and particle transport in the microwave background (Berezinsky and Grigor'eva 1988, A&A). We get excellent agreement with the cosmic ray data points at ultra high energies. THIS PAPER GIVES THE FUNDAMENTAL MODEL FOR THE EXPLANATION OF THE NEW AIR SHOWER DATA OF THE PROTON COMPONENT OF THE COSMIC RAY SPECTRUM BETWEEN 0.1 AND 1 EeV (Gaisser et al. 1993, Phys. Rev. D in press, Stanev et al. 1992, A&A submitted), which is subject of a subsequent paper (part II, Rachen and Biermann 1992, A&A submitted).
  • p: cosmic radiation
  • photon: cosmic radiation
  • cosmic radiation: particle source
  • cosmic radiation: acceleration
  • astrophysics
  • shock waves
  • magnetic field: constraint
  • cosmic radiation: energy spectrum
  • energy spectrum: cosmic radiation
  • cosmic radiation: anisotropy