output
19912026
Showing 2012 · astro-ph.HEShow all

13 papers · 2 filters

astro-ph.HE2012★ 102 cited

Constraints on the origin of cosmic rays above eV from large scale anisotropy searches in data of the Pierre Auger Observatory

Pierre Auger Collaboration

A thorough search for large scale anisotropies in the distribution of arrival directions of cosmic rays detected above eV at the Pierre Auger Observatory is reported. For…

astro-ph.HE2012★ 77 cited

A Search for Point Sources of EeV Neutrons

The Pierre Auger Collaboration

A thorough search of the sky exposed at the Pierre Auger Cosmic Ray Observatory reveals no statistically significant excess of events in any small solid angle that would be indicat…

astro-ph.HE2012★ 73 cited

On The Origin of IceCube's PeV Neutrinos

Ilias Cholis, Dan Hooper

The IceCube collaboration has recently reported the observation of two events with energies in excess of 1 PeV. While an atmospheric origin of these events cannot be ruled out at t…

astro-ph.HE2012★ 10 cited

A search for anisotropy in the arrival directions of ultra high energy cosmic rays recorded at the Pierre Auger Observatory

Pierre Auger Collaboration

Observations of cosmic ray arrival directions made with the Pierre Auger Observatory have previously provided evidence of anisotropy at the 99% CL using the correlation of ultra hi…

astro-ph.HE2012★ 76 cited

Search for Point-Like Sources of Ultra-High Energy Neutrinos at the Pierre Auger Observatory and Improved Limit on the Diffuse Flux of Tau Neutrinos

Pierre Auger Collaboration

The Surface Detector array of the Pierre Auger Observatory can detect neutrinos with energy between 10^17 eV and 10^20 eV from point-like sources across the sky south of +55 deg an…

astro-ph.HE2012★ 25 cited

Testing The Light Dark Matter Hypothesis With AMS

Dan Hooper, Wei Xue

The spectrum and morphology of gamma-rays from the Galactic Center and the spectrum of synchrotron emission observed from the Milky Way's radio filaments have each been interpreted…

astro-ph.HE2012★ 55 cited

Large scale distribution of arrival directions of cosmic rays detected above eV at the Pierre Auger Observatory

Pierre Auger Collaboration

A thorough search for large scale anisotropies in the distribution of arrival directions of cosmic rays detected above eV at the Pierre Auger Observatory is presented. Th…

astro-ph.HE2012★ 161 cited

Stringent and Robust Constraints on the Dark Matter Annihilation Cross Section From the Region of the Galactic Center

Dan Hooper, Chris Kelso, Farinaldo S. Queiroz

For any realistic halo profile, the Galactic Center is predicted to be the brightest source of gamma-rays from dark matter annihilations. Due in large part to uncertainties associa…

astro-ph.HE2012★ 20 cited

Are Lines From Unassociated Gamma-Ray Sources Evidence For Dark Matter Annihilation?

Dan Hooper, Tim Linden

Very recently, it was pointed out that there exists a population of gamma-ray sources without associations at other wavelengths which exhibit spectral features consistent with mono…

astro-ph.HE2012★ 76 cited

Circum-Galactic Gas and the Isotropic Gamma Ray Background

Robert Feldmann, Dan Hooper, Nickolay Y. Gnedin

Interactions of cosmic rays with the interstellar gas and radiation fields of the Milky Way provide the majority of the gamma rays observed by the Fermi Gamma Ray Space Telescope.…

astro-ph.HE2012★ 53 cited

The boron-to-carbon abundance ratio and Galactic propagation of cosmic radiation

A. Obermeier, P. Boyle, J. Hörandel +1

In two long-duration balloon flights in 2003 and 2006, the TRACER cosmic-ray detector has measured the energy spectra and the absolute intensities of the cosmic-ray nuclei from bor…

astro-ph.HE2012★ 78 cited

A search for ultra-high energy neutrinos in highly inclined events at the Pierre Auger Observatory

The Pierre Auger Collaboration, P. Abreu, M. Aglietta +497

The Surface Detector of the Pierre Auger Observatory is sensitive to neutrinos of all flavours above 0.1 EeV. These interact through charged and neutral currents in the atmosphere…

astro-ph.HE2012★ 83 cited

Description of Atmospheric Conditions at the Pierre Auger Observatory using the Global Data Assimilation System (GDAS)

The Pierre Auger Collaboration, P. Abreu, M. Aglietta +499

Atmospheric conditions at the site of a cosmic ray observatory must be known for reconstructing observed extensive air showers. The Global Data Assimilation System (GDAS) is a glob…