Astrophysics of Ultra-High Energy Cosmic Rays, Photons, and Neutrinos

Details Astrophysics of Ultra-High Energy Cosmic Rays, Photons, and Neutrinos Astrophysics of Ultra-High Energy Cosmic Rays, Photons, and Neutrinos

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005auhe.proge.....&link_type=abstract

Presented at the KITP Miniprogram: Astrophysics of Ultra-High Energy Cosmic Rays, Photons, and Neutrinos, May 3, 2005, Kavli Ins

Astronomy and Astrophysics

Astrophysics

Scientific paper

This miniworkshop concentrates on the astrophysics of GeV to ZeV cosmic rays, photons and neutrinos from active galaxies, gamma ray bursts and other compact or diffuse sources, as well as the transport processes and the physics of acceleration mechanisms that determine their observed fluxes and spectra. SCIENCE and MOTIVATION
There are a number of major issues which this workshop is aimed at:
* What is the origin of the ultra-high energy(PeV to ZeV) cosmic rays? Independently of whether there are super-GZK events or not, the CR flux levels near 1E20 eV from AGASA and HIRES are within 3 sigma of each other, and there is an intense debate about the possible astrophysical sources.
What is the contribution to these from gamma-ray bursts, active galaxies, galactic core sources? Can we reconcile the AGASA and HIRES discrepancies? Can Fermi acceleration explain particles at the GZK limit, and can we test shock acceleration? How strong is the case for alternative astrophysical acceleration mechanisms? What are the implications of Auger's accumulating data, as the array progresses towards completion? What can be learned about intergalactic matter from cosmic ray propagation effects?
* What is the origin of GeV-TeV photons from AGN, GRB, SNRs? Are the jets in AGN and GRB hadronic or leptonic? What constraints can be imposed on these from TeV and correlated lower energy spectra and variability? What is the origin of the GeV-TeV emission from pulsars and possibly magnetars(polar cap or outer gap emittors?) Are there smoking gun signatures of Fermi(diffusive) or other, e.g. linear(wakefield, etc) acceleration of leptons? For scattering off magnetic turbulence, reconnection, etc? Is there strong evidence for proton acceleration and hadronic cascades? How realistic is it to detect gamma-ray signatures of the quantum-gravity energy scale, vacuum dispersion, etc., with GLAST, SWIFT, etc?
* What is the TeV to EeV neutrino emission of AGN, GRB, micro- quasars and other sources? How will it take for AMANDA to set limits on the diffuse neutrino flux from these? What can we learn about interactions at > TeV CM energies from atmospheric or point source neutrinos with Auger and ICECUBE? Can we detect UHE tau neutrinos, and what will we learn from them? How far can TeV-nu measurements constrain the neutrino masses, mixing angles, etc?

Affiliated with

Also associated with

No associations

Rating

Astrophysics of Ultra-High Energy Cosmic Rays, Photons, and Neutrinos does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Astrophysics of Ultra-High Energy Cosmic Rays, Photons, and Neutrinos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Astrophysics of Ultra-High Energy Cosmic Rays, Photons, and Neutrinos will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-769431