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Section on Prospects for Dark Matter Detection of the White Paper on the Status and Future of Ground-Based TeV Gamma-Ray Astronomy
J. Buckley, E. A. Baltz, G. Bertone +18
This is a report on the findings of the dark matter science working group for the white paper on the status and future of TeV gamma-ray astronomy. The white paper was commissioned…
Helical Magnetic Fields from Sphaleron Decay and Baryogenesis
Craig J. Copi, Francesc Ferrer, Tanmay Vachaspati +1
Many models of baryogenesis rely on anomalous particle physics processes to give baryon number violation. By numerically evolving the electroweak equations on a lattice, we show th…
Correlation of the highest-energy cosmic rays with the positions of nearby active galactic nuclei
The Pierre Auger Collaboration
Data collected by the Pierre Auger Observatory provide evidence for anisotropy in the arrival directions of the cosmic rays with the highest energies, which are correlated with the…
Light superconducting strings in the Galaxy
Francesc Ferrer, Tanmay Vachaspati
Observations of the Milky Way by the SPI/INTEGRAL satellite have confirmed the presence of a strong 511 KeV gamma-ray line emission from the bulge, which require an intense source…
TeV Dark Matter detection by Atmospheric Cerenkov Telescopes
Francesc Ferrer
Ground based Atmospheric Cerenkov Telescopes have recently unveiled a TeV gamma-ray signal from the direction of the Galactic Centre. We examine whether these gamma-rays, observed…
511 KeV photons from superconducting cosmic strings
Francesc Ferrer, Tanmay Vachaspati
We show that a tangle of light superconducting strings in the Milky Way could be the source of the observed 511 KeV emission from electron-positron annihilation in the Galactic bul…
Bose-Einstein Condensation, Dark Matter and Acoustic Peaks
F. Ferrer, J. A. Grifols
Scalar mediated interactions among baryons extend well above the Compton wavelength, when they are embedded in a Bose-Einstein condensate composed of the mediating particles. Indee…
Correlated isocurvature perturbations from mixed inflaton-curvaton decay
Francesc Ferrer, Syksy Rasanen, Jussi Valiviita
We study cosmological perturbations in the case that present-day matter consists of a mixture of inflaton and curvaton decay products. We calculate how the curvaton perturbations a…
Looking for dark matter annihilations in dwarf galaxies
F. Ferrer
We calculate the flux of high energy gamma-rays from annihilation of neutralino dark matter in the centre of the Milky Way and the three nearest dwarf spheroidals (Sagittarius, Dra…
Have Atmospheric Cerenkov Telescopes Observed Dark Matter?
Dan Hooper, Ignacio de la Calle Perez, Joseph Silk +2
Two ground-based experiments have recently independently detected TeV -rays from the direction of the Galactic center. The observations made by the VERITAS and CANGAROO collabor…
Reply to ``Cuts and penalties: comment on `The clustering of ultra-high energy cosmic rays and their sources' ''
N. W. Evans, Francesc Ferrer, Subir Sarkar
We reiterate that there is no evidence that BL Lacs are sources of ultrahigh energy cosmic rays.
Possible Evidence for MeV Dark Matter In Dwarf Spheroidals
Dan Hooper, Francesc Ferrer, Céline Boehm +4
It has been recently proposed that the observed 511 keV emission from the Galactic bulge could be the product of very light (1-100 MeV) annihilating dark matter particles. Other po…
A "Baedecker" for the Dark Matter Annihilation Signal
N. W. Evans, F. Ferrer, Subir Sarkar
We provide a ``Baedecker'' or travel guide to the directions on the sky where the dark matter annihilation signal may be expected. We calculate the flux of high energy gamma-rays f…
The clustering of ultra-high energy cosmic rays and their sources
N. Wyn Evans, Francesc Ferrer, Subir Sarkar
The sky distribution of cosmic rays with energies above the 'GZK cutoff' holds important clues to their origin. The AGASA data, although consistent with isotropy, shows evidence fo…
The Anisotropy of the Ultra-High Energy Cosmic Rays
Wyn Evans, Francesc Ferrer, Subir Sarkar
Ultra-high energy cosmic rays (UHECRs) may originate from the decay of massive relic particles in the dark halo of the Galaxy, or they may be produced by supermassive black holes i…