[CvGmt News] avviso Colloquio della Classe di Scienze prof. Pasquale Blasi (20.03.2013)- Reminder

[valeria.giuliani at sns.it]

Il 12/03/2013 10:09, valeria.giuliani at sns.it ha scritto:
>
> Colloqui Classe di Scienze
>
>
>     Mercoledì 20 marzo 2013
>
> ore 15.00
>
> _Scuola Normale Superiore_
>
> Pisa
>
> (Sala Azzurra)
>
> *__*
>
> *Pasquale Blasi__*
>
> /Osservatorio Astrofisico di Arcetri/
>
> //
>
> Terrà un seminario dal titolo:
>
> */"/**Cosmic Rays one Century from Discovery/"/*
>
> */Abstract:/**//*
>
> /The penetrating radiation discovered by Viktor Hess one century ago 
> plays a crucial role for many phenomena of both astrophysical and 
> terrestrial origin. This radiation ionizes the central parts of 
> molecular clouds thereby allowing the formation of stars in those 
> clouds. The death of massive stars in turn leads to the injection of 
> new cosmic rays in the Galaxy. Cosmic rays are also the main source of 
> DNA mutations and are believed to have played a very important role in 
> the evolution of Life on Earth. A few decades after the discovery of 
> the cosmic origin of the penetrating radiation, cosmic rays literally 
> bootstrapped the field of particle physics: the positron, the muon, 
> the pion, several hyperons were first discovered in cosmic rays. Given 
> this overwhelming role and given the extreme energies that cosmic ray 
> particles carry (up to a few 10^11 GeV), the search for their sources, 
> the understanding of the acceleration mechanisms that energize them 
> and the investigation of their propagation throughout the universe 
> appear to be of the utmost importance. /
>
> /Here I will summarize the most important steps in the history of 
> cosmic ray research and the most recent developments in the field. I 
> will discuss the physics underlying the acceleration of charged 
> particles in supernova remnants and new avenues to test these ideas, 
> using the crucial fact that cosmic rays modify the environment in 
> which they get accelerated. This interaction leads to amplification of 
> magnetic fields in the acceleration region, which is observed in 
> X-rays, and is crucial if to aim at understanding acceleration to very 
> high energies. A similar phenomenon is also likely to occur during 
> propagation of cosmic rays throughout the Galaxy and might provide an 
> explanation of some puzzling recent data concerning the spectra of the 
> most abundant chemical species in cosmic rays. /
>
> /Finally I will try to outline what the next hundred years of cosmic 
> ray research might look like.
> /
>
>
> Tutti gli interessati sono invitati a partecipare.
> Classe di Scienze
>
> -- 
> --------------------------------------------------------------------------------
> Valeria Giuliani
> Scuola Normale Superiore
> Servizio Supporto Attività Didattiche - Scienze
> Tel. 050-509260
> Fax. 050-509045
> Piazza dei Cavalieri, 7
> 56126 Pisa
> E-Mail:v.giuliani at sns.it
> E-Mail:segreteria.scienze at sns.it
>   
> Le informazioni contenute nella presente e-mail e nei relativi allegati possono essere riservate e sono, comunque, destinate esclusivamente al destinatario in indirizzo.
> E' vietata, pertanto, la diffusione, distribuzione e/o copiatura di tali informazioni da parte di qualsiasi soggetto diverso dal destinatario.
> Chiunque abbia ricevuto o letto questa e-mail per errore o senza esserne legittimato è invitato a darne immediatamente notizia  al mittente tramite fax o e-mail e a distruggerla.
> Grazie.
>   


-- 
--------------------------------------------------------------------------------
Valeria Giuliani
Scuola Normale Superiore
Servizio Supporto Attività Didattiche - Scienze
Tel. 050-509260
Fax. 050-509045
Piazza dei Cavalieri, 7
56126 Pisa
E-Mail: v.giuliani at sns.it
E-Mail: segreteria.scienze at sns.it
  
Le informazioni contenute nella presente e-mail e nei relativi allegati possono essere riservate e sono, comunque, destinate esclusivamente al destinatario in indirizzo.
E' vietata, pertanto, la diffusione, distribuzione e/o copiatura di tali informazioni da parte di qualsiasi soggetto diverso dal destinatario.
Chiunque abbia ricevuto o letto questa e-mail per errore o senza esserne legittimato è invitato a darne immediatamente notizia  al mittente tramite fax o e-mail e a distruggerla.
Grazie.
  

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