Events Calendar
What are the highest energy cosmic rays telling us?
Tuesday August 27, 2013
| 2:00 pm
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Presenter: | John Matthews (UNM) |
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| Series: | Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars | |
| Abstract: |
In November 2007 the Auger experiment published evidence for ``Correlation of the Highest-Energy Cosmic Rays with Nearby Extragalactic Objects'' potentially opening the door for cosmic ray astronomy. In February 2010 the Auger experiment published evidence for a significant fraction of the highest energy cosmic rays not being protons. As cosmic rays are bent by magnetic fields in the universe, the increased angular deflection of non-proton cosmic rays meant that there was(is) a mild to significant tension between these two results.
Since then the Telescope Array experiment (in Utah) has results in the same energy range as the Auger experiment. Furthermore the air shower simulation programs, used to interpret the composition of the cosmic rays, have been significantly revised to reflect the latest collider data. Thus it is timely to ask: what are the highest energy cosmic rays telling us? |
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| Host: | Huaiyu (Mike) Duan | |
| Location: | PAIS-2540, PAIS | |
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