XXIst European Cosmic Ray Symposium

Kosice 2008

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Tadeusz Wibig

University of Łódź

A. Sołtan Institute for Nuclear Studies

Heavy Cosmic Ray Nuclei from Extragalactic Sources above The Ankle

R.U. Abbasi et al.., e-Print: arXiv:0804.0382 [astro-ph], Apr. 2008

R.U. Abbasi et al.., e-Print: arXiv:0804.0382 [astro-ph], Apr. 2008

source (l, b) objects (sources) distance observed angular size

A (310º,20º) CEN-A 4.9 Mpc 10º

B (190º, -60º) FORNAX

NGC 1052

NGC 1407

18 Mpc

22 Mpc

6º

C ( 60º, -45º) 33 Mpc 10º

Source A

Source B

Source C

Source A

Source B

Source C

source (l, b) objects (sources) distance observed angular size

IGM deflection

A (310º,20º) CEN-A 4.9 Mpc 10º 1.1º

B (190º, -60º) FORNAX

NGC 1052

NGC 1407

18 Mpc

22 Mpc

6º 2.2º

C ( 60º, -45º) 33 Mpc 10º 2.8º

source (l, b) distance observed angular size

IGM deflection

Galactic deflection

deflection

A (310º,20º) 4.9 Mpc 10º 1.1º 0.7º 1.3º

B (190º, -60º) 20 Mpc 6º 2.2º 0.5º 2.2º

C ( 60º, -45º) 33 Mpc 10º 2.8º 0.5º 2.8º

source (l, b) distance observed angular size

Deflection for Z=1

Z

A (310º,20º) 4.9 Mpc 10º 1.3º 7.7

B (190º, -60º) 20 Mpc

6º 2.2º 2.7

C ( 60º, -45º) 33 Mpc 10º 2.8º 3.6

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J.R.Hoerandel, 36th COSPAR, Beijin 2006 ; astro-ph/0702370

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Conclusions:

The extragalactic CR with E > 5.6 1019 eV from the close AGN do not have to be protons

there is not necessary to change of the ‘conventional’ model of nuclear interactions above 60 EeV

T. Wibig & A.W. Wolfendale, J.Phys. G34, 1891 (2007)

G- and power law EG- the fit

A.A. Watson, Proc. 30th ICRC (Merida) (2007)

V.S. Berezinsky & S.I. Grigorieva, Astron. Astrophys. 199, 1 (1998)

EG protons only

A.A. Watson, Proc. 30th ICRC (Merida) (2007)

T. Wibig & A.W. Wolfendale, J.Phys. G34, 1891 (2007)

the quasar source model for protons

A.A. Watson, Proc. 30th ICRC (Merida) (2007)