Bulletin of the American Physical Society
APS April Meeting 2012
Volume 57, Number 3
Saturday–Tuesday, March 31–April 3 2012; Atlanta, Georgia
Session H3: Invited Session: Toward Understanding the Origins of Extra-Galactic Cosmic Rays |
Hide Abstracts |
Sponsoring Units: DAP Chair: Angela Olinto, University of Chicago Room: Hanover CDE |
Sunday, April 1, 2012 10:45AM - 11:21AM |
H3.00001: On the transition from Galactic to extragalactic cosmic rays Invited Speaker: Joerg Hoerandel The Earth is permanently exposed to a flux of high-energy ionized nuclei - the cosmic rays. Most of these particles are accelerated in our Galaxy, most probably in supernova remnants. Cosmic rays are magnetically bound to our Galaxy up to energies of about $10^{17}$ to $10^{18}$ eV. At higher energies the observed particles most likely originate in other galaxies and are usually referred to as extra-galactic cosmic rays. Thus, the energy region between $10^{17}$ and $10^{18}$ eV is of great astrophysical interest. From a detailed measurement of the composition of cosmic rays in this energy regime we expect deeper insight into both, the origin of Galactic and extra-galactic cosmic rays. The status of the actual research will be reviewed and implications on our understanding of the origin of cosmic rays will be discussed. [Preview Abstract] |
Sunday, April 1, 2012 11:21AM - 11:57AM |
H3.00002: The Highest Energy Cosmic Rays Invited Speaker: Miguel Mostafa I refuse to start yet another abstract saying that the origin of cosmic rays is a mystery. Instead, I would like to highlight the progress made by ultra-high energy cosmic ray experiments in the last three years. The Pierre Auger Observatory and the Telescope Array are the largest cosmic ray detectors ever built, and together they cover the entire sky at the highest energies. I will present the most recent experimental results, and discuss their implications toward an understanding of the origin of Extragalactic cosmic rays. Finding the transition between Galactic and Extragalactic origin is an important step forward because it will allow us to concentrate our searches on specific energy ranges and specific objects in the sky. [Preview Abstract] |
Sunday, April 1, 2012 11:57AM - 12:33PM |
H3.00003: Future Directions for Extra-galactic Cosmic Ray Physics Invited Speaker: Peter Gorham |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700