420 citations · 5.7k across the 129 of their papers we have counts for
21 papers · 1 filter
A new perspective on the relation between dark energy perturbations and the late-time ISW effect
James B. Dent, Sourish Dutta, Thomas J. Weiler
The effect of quintessence perturbations on the ISW effect is studied for a mixed dynamical scalar field dark energy (DDE) and pressureless perfect fluid dark matter. A new and gen…
TeV gamma-rays from photo-disintegration/de-excitation of nuclei in Westerlund 2
Luis A. Anchordoqui, John F. Beacom, Yousaf M. Butt +4
TeV gamma-rays can result from the photo-de-excitation of PeV cosmic ray nuclei after their parents have undergone photo-disintegration in an environment of ultraviolet photons. Th…
Working Group Report on the "TeV Particle Astrophysics and Physics Beyond the Standard Model"
Ivone F. M. Albuquerque, Sergio Palomares-Ruiz, Tom Weiler
This working group focused mainly on the complementarity among particle physics and astrophysics. The analysis of data from both fields will better constrain theoretical models. Mu…
TeV gamma-rays and neutrinos from photo-disintegration of nuclei in Cygnus OB2
Luis A. Anchordoqui, John F. Beacom, Haim Goldberg +2
TeV gamma-rays may provide significant information about high energy astrophysical accelerators. Such gamma-rays can result from the photo-de-excitation of PeV nuclei after their p…
TeV gamma-rays from photo-disintegration/de-excitation of cosmic-ray nuclei
Luis A. Anchordoqui, John F. Beacom, Haim Goldberg +2
It is commonly assumed that high-energy gamma-rays are made via either purely electromagnetic processes or the hadronic process of pion production, followed by decay. We investigat…
Acceptances for Space-Based and Ground-Based Fluorescence Detectors, and Inference of the Neutrino-Nucleon Cross-Section above 10^19 eV
Sergio Palomares-Ruiz, Andrei Irimia, Thomas J. Weiler
Detection of ultra-high energy neutrinos will be useful for unraveling the dynamics of the most violent sources in the cosmos and for revealing the neutrino cross-section at extrem…
Z-bursts from the Virgo cluster
Andreas Ringwald, Thomas J. Weiler, Yvonne Y. Y. Wong
Resonant annihilation of ultra-high energy cosmic neutrinos (UHECnu) on the cosmic neutrino background (CnuB) into Z bosons--the Z-burst mechanism--and its associated absorption an…
Neutrinos as a diagnostic of cosmic ray Galactic/extra-galactic transition
Markus Ahlers, Luis A. Anchordoqui, Haim Goldberg +3
Motivated by a recent change in viewing the onset of the extra-galactic component in the cosmic ray spectrum, we have fitted the observed data down to GeV and have obtai…
Neutrino Bursts from Fanaroff-Riley I Radio Galaxies
Luis A. Anchordoqui, Haim Goldberg, Francis Halzen +1
On the basis of existing observations (at the 4.5 σlevel) of TeV gamma-ray outbursts from the Fanaroff-Riley I (FRI) radio galaxy Centaurus A, we estimate the accompanying neutrino…
Galactic Point Sources of TeV Antineutrinos
Luis A. Anchordoqui, Haim Goldberg, Francis Halzen +1
High energy cosmic ray experiments have identified an excess from the region of the Galactic Plane in a limited energy range around eV (EeV). This is very suggestive of n…
Physics with Cosmic Neutrinos, PeV to ZeV
Thomas J. Weiler
We begin with a brief overview of highest-energy cosmic ray data, and the experiments which will perform neutrino astronomy. We then discuss two particle physics aspects of neutrin…
An Auger test of the Cen A model of highest energy cosmic rays
Luis A. Anchordoqui, Haim Goldberg, Thomas J. Weiler
If, as recently proposed by Farrar and Piran, Cen A is the source of cosmic rays detected above the Greisen-Zatsepin-Kuz'min cutoff, neutrons are more probable than p…
Signature Studies of Cosmic Magnetic Monopoles
Stuart D. Wick, Thomas W. Kephart, Thomas J. Weiler
This talk explores the possibility that the Universe may be populated with relic magnetic monopoles. Observations of galactic and extragalactic magnetic fields, lead to the conclus…
Clustering in Highest Energy Cosmic Rays: Physics or Statistics?
Haim Goldberg, Thomas J. Weiler
Directional clustering can be expected in cosmic ray observations due to purely statistical fluctuations for sources distributed randomly in the sky. We develop an analytic approac…
Signatures for a Cosmic Flux of Magnetic Monopoles
Stuart D. Wick, Thomas W. Kephart, Thomas J. Weiler +1
Any early universe phase transition occurring after inflation has the potential to populate the universe with relic magnetic monopoles. Observations of galactic magnetic fields, as…
Neutrino Decay as an Explanation of Atmospheric Neutrino Observations
V. Barger, J. G. Learned, S. Pakvasa +1
We show that the observed zenith angle dependence of the atmospheric neutrinos can be accounted for by neutrino decay. Furthermore, it is possible to account for all neutrino anoma…
Are we seeing magnetic monopole cosmic rays at $E\gsim 10^{20}$ eV?
Thomas J. Weiler, Thomas W. Kephart
We suggest that the highest energy $ \gsim 10^{20}$ eV cosmic ray primaries may be relativistic magnetic monopoles. Motivations for this hypothesis are twofold: (i) conventional pr…
Cosmological Models of Gamma-Ray Bursts
Charles D. Dermer, Thomas J. Weiler
We review models of cosmological gamma-ray bursts (GRBs). The statistical and -ray transparency issues are summarized. Neutron-star and black-hole merger scenarios are described…
Magnetic Monopoles as the Highest Energy Cosmic Ray Primaries
Thomas W. Kephart, Thomas J. Weiler
We suggest that the highest energy $ \gsim 10^{20} eV$ cosmic ray primaries may be relativistic magnetic monopoles. Motivations for this hypothesis are that conventional primaries…
A Solvable Model for Anharmonic Evolution of Cosmic Axion Overdensitites
Karl Strobl, Thomas J. Weiler
We present analytic solutions to the spatially homogeneous axion field equation, using a model potential which strongly resembles the standard anharmonic potential. We…
Anharmonic Evolution of the Cosmic Axion Density Spectrum
K. Strobl, T. J. Weiler
We present analytic solutions to the spatially homogeneous axion field equation, using a model potential which strongly resembles the standard anharmonic potential, b…