Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars
What are the highest energy cosmic rays telling us?
Presented by John Matthews (UNM)
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?
2:00 pm, Tuesday, August 27, 2013
PAIS-2540, PAIS
Individuals with disabilities who need an auxiliary aid or service to attend or participate in P&A events should contact the Physics Department (phone: 505-277-2616, email: physics@unm.edu) well in advance to ensure your needs are accomodated. Event handouts can be provided in alternative accessible formats upon request. Please contact the Physics front office if you need written information in an alternative format.
A schedule of talks within the Department of Physics and Astronomy is available on the P&A web site at http://physics.unm.edu/pandaweb/events/index.php