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Incontri nella Luna piena – Ignazio Licata – Meta ficiso siciliano

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In diretta su internet
giovedì 9 aprile ore 21,30
http://www.oistros.it/lunapiena

Ignazio Licata è un fisico teorico, professore presso l’Institute for Basic Research di Palm Harbor, Florida, Usa ed attualmente direttore scientifico dell’ISEM, Institute for Scientific Methodology a Bagheria, Palermo. Ha iniziato lavorando nel campo delle particelle e della cosmologia quantistica. Ha discusso le sue ricerche con teorici del calibro di David Bohm e J. P.Vigier.
Oltre ai numerosi contributi specialistici (www.i-sem.net) ha pubblicato: Osservando la Sfinge. La realtà virtuale della fisica quantistica, Di Renzo, Roma, 2006 e La Logica Aperta della Mente, Codice Edizioni, Torino, 2008 che hanno incontrato un notevole successo di pubblico.
A settembre dell’anno scorso ha ricevuto il Premio “Veneri di Parabita” per l’arte e la scienza che gli ha permesso di aprire un proficuo rapporto col Salento ed in particolare con le ricerche condotte dal gruppo Oistros sul tema del tarantismo.
Un Incontro nella luna piena del 9 aprile specialissimo, dunque, che prenderà le mosse da una domanda: Se tanti percorsi di conoscenza si sono risolti in circoli viziosi, possiamo continuare a pensare entro le gabbie delle discipline come ci hanno insegnato a fare, o è possibile trovare percorsi virtuosi?

Written by antonio

April 5th, 2009 at 10:27 am

The Age of Cosmic Ray

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Scientists of the Pierre Auger Collaboration announced on 8 Nov. 2007 that active galactic nuclei are the most likely candidate for the source of the highest-energy cosmic rays that hit Earth. Using the Pierre Auger Observatory in Argentina, the largest cosmic-ray observatory in the world, a team of scientists from 17 countries found that the sources of the highest-energy particles are not distributed uniformly across the sky. Instead, the Auger results link the origins of these mysterious particles to the locations of nearby galaxies that have active nuclei in their centers. The results appear in the Nov. 9 issue of the journal Science.

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Active Galactic Nuclei (AGN) are thought to be powered by supermassive black holes that are devouring large amounts of matter. They have long been considered sites where high-energy particle production might take place. They swallow gas, dust and other matter from their host galaxies and spew out particles and energy. While most galaxies have black holes at their center, only a fraction of all galaxies have an AGN. The exact mechanism of how AGNs can accelerate particles to energies 100 million times higher than the most powerful particle accelerator on Earth is still a mystery.

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“We have taken a big step forward in solving the mystery of the nature and origin of the highest-energy cosmic rays, first revealed by French physicist Pierre Auger in 1938,” said Nobel Prize winner James Cronin, of the University of Chicago, who conceived the Pierre Auger Observatory together with Alan Watson of the University of Leeds. “We find the southern hemisphere sky as observed in ultra-high-energy cosmic rays is non-uniform. This is a fundamental discovery. The age of cosmic-ray astronomy has arrived. In the next few years our data will permit us to identify the exact sources of these cosmic rays and how they accelerate these particles.”

Written by Ilari Valbonesi

November 12th, 2007 at 12:23 pm

Posted in Culture

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