Ultra High Energy cosmic rays

Astrophysical studies makes possible to use natural cosmic objects as unique particle laboratories. Effects of new physics in cosmic rays and electromagnetic radiation, in stars and galaxies, indirect effects of dark matter , in particular, are the subjects of this topic of Forum

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Ultra High Energy cosmic rays

New postby Maxim Khlopov on Wed 8 Apr 2009 21:20

First infromation on results of Pierre Auger experiment in VIA lecture by Antoine Letessier Selvon
http://viavca.in2p3.fr/antoine_letessier_selvon.html
Possible interpretation of these results in VIA lecture by Daniele Fargion
http://viavca.in2p3.fr/daniele_fargion.html
The AUGER view on Ultra high energy cosmic rays in VIA lecture by Etienne Parizot
http://viavca.in2p3.fr/etienne_parizot.html
Greisen Zatsepin-Kuzmin effect at Ultra high energy cosmic rays, 50 years later in VIA lecture by Jean-Noel Capdevielle
http://viavca.in2p3.fr/jean_noel_capdevielle.html
Status of the problem of UHECRs in VIA lecture by Dmitri Semikoz
http://viavca.in2p3.fr/dmitri_semikoz.html
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Re: Ultra High Energy cosmic rays

New postby Maxim Khlopov on Wed 15 Apr 2009 18:27

Questions and comments in chat at VIA lecture by J.N. Capdevielle on 20 march 2009
konstantin b.:does AGASA confirm that gamma is disfavoured as primary particles for UHECR?
fargion:Hi To every one: here is Daniele Fargion ..no from AGASA but just to remind the AGASA claim of EeV anisotropy from G.Center..AUGER disclaimed..May you comment?
fargion:Best to all and arrivederci Df
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Re: Ultra High Energy cosmic rays

New postby Maxim Khlopov on Thu 23 Apr 2009 21:03

Questions and comments to VIA lecture by D.Semikoz on 06.02.2009 (see answers in record of this VIA lecture)

Daniele Fargion (University Roma1, Italy): I would like to mention 3 points: 1) absence of signal from Virgo cluster,
2) Composition of UHECRs and 3) a possible discovery of Neutrino Tau
I hope Dimitri knows my proposal for UHECR by LIGHTEST NUCLEI see in
"Light Nuclei solving Auger puzzles. The Cen-A imprint" Authors: D. Fargion Comments: 4 pages, 5 figures;Journal-ref: Phys. Scr. 78 (2008) 045901 (4pp)
Konstantin Belotsky (MIFI, Cosmion, Moscow, Russia):Do I correctly understand, that depth of shower maximum tells in favour of heavy nuclei origin of UHECR, while angle deflection does not?
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