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  <organization>ICN-UNAM</organization>
  <emailHash>1482bc95ee34f0461176da21871284c8</emailHash>
  <userid>3</userid>
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<supportEmail caption="Support">icrc2007@icrc2007.unam.mx</supportEmail>
<title>30th International Cosmic Ray Conference</title>
<description>The 30th International Cosmic Ray Conference will be held from July 3, 2007 to July 11, 2007 in Merida, Yucatan, Mexico.</description>
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<closed>True</closed>
<location>
 <name>Merida, Mexico</name>
 <address></address>
 <room></room>
</location>
<startDate>2007-07-03T08:00:00</startDate>
<endDate>2007-07-11T19:00:00</endDate>
<creationDate>2005-09-26T05:04:53</creationDate>
<modificationDate>2024-04-12T17:46:55</modificationDate>
<timezone>Mexico/General</timezone>
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 <user>
  <title>Dr.</title>
  <name first="José" middle="" last="Valdés"></name>
  <organization>IGeof-UNAM</organization>
  <emailHash>40af9343b8bb9d18708b4f0252d5f53c</emailHash>
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 <title>The Highest Energy Cosmic Rays: Some Historical Thoughts</title>
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   <title>Prof.</title>
   <name first="James W." middle="" last="Cronin"></name>
   <organization>University of Chicago</organization>
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   <title>Prof.</title>
   <name first="James W." middle="" last="Cronin"></name>
   <organization>University of Chicago</organization>
   <emailHash>1a241152863c1fd9c8c1a299e1a59ef0</emailHash>
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  <name>Merida, Mexico</name>
  <address></address>
  <room>Teatro Jose Peon Contreras</room>
 </location>
 <startDate>2007-07-03T18:20:00</startDate>
 <endDate>2007-07-03T19:20:00</endDate>
 <duration>01:00</duration>
 <abstract>This lecture honors the discoverer of cosmic rays nearly 100 years ago.
Research on cosmic rays spawned the entire field of particle physics which
in the early 50's shifted to accelerators as marked by the famous
conference at Bagneres de Bigorres. Remaining to investigate were all the
astrophysical aspects of cosmic rays which has been the principal subject
of the ICRC meetings ever since. One of the most fascinating and least
understood topics is the existence of cosmic rays of enormous energy.
Pierre Auger in 1938 demonstrated the existence of cosmic rays with
energies in excess of 10^15 eV. In 1962 John Linsley observed a cosmic ray
with an energy of 10^20 eV. In this lecture I will trace the efforts to
understand how Nature produces this extraordinary phenomenon. Having only
recently joined this effort I approach the subject with great humility.
In reviewing the past one is impressed with the ingenuity and courage
of all individuals who have participated in this adventure.</abstract>
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