84 citations · 297 across the 10 of their papers we have counts for
10 papers
Status of cosmic-ray antideuteron searches
P. von Doetinchem, T. Aramaki, S. Boggs +24
The precise measurement of cosmic-ray antiparticles serves as important means for identifying the nature of dark matter. Recent years showed that identifying the nature of dark mat…
Antideuterons from Decaying Gravitino Dark Matter
Timur Delahaye, Michael Grefe
We study the possibility of improving the constraints on the lifetime of gravitino dark matter in scenarios with bilinear R-parity violation by estimating the amount of cosmic-ray…
Search for 100 MeV to 10 GeV gamma-ray lines in the Fermi-LAT data and implications for gravitino dark matter in the SSM
Andrea Albert, German A. Gomez-Vargas, Michael Grefe +6
Dark matter decay or annihilation may produce monochromatic signals in the gamma-ray energy range. In this work we argue that there are strong theoretical motivations for studying…
Antiproton Limits on Decaying Gravitino Dark Matter
Michael Grefe, Timur Delahaye
We report on constraints on the lifetime of decaying gravitino dark matter in models with bilinear R-parity violation derived from observations of cosmic-ray antiprotons with the P…
Antiproton Limits on Decaying Gravitino Dark Matter
Timur Delahaye, Michael Grefe
We derive 95% CL lower limits on the lifetime of decaying dark matter in the channels , and using measurements of the cosmic-ray antiproton flux by the PAMELA expe…
Indirect searches for gravitino dark matter
Michael Grefe
The gravitino in models with a small violation of R-parity is a well-motivated decaying dark matter candidate that leads to a cosmological scenario that is consistent with big bang…
Neutrino Signals from Gravitino Dark Matter with Broken R-Parity
Michael Grefe
The gravitino is a promising supersymmetric dark matter candidate, even without strict R-parity conservation. In fact, with some small R-parity violation, gravitinos are sufficient…
Unstable Gravitino Dark Matter - Prospects for Indirect and Direct Detection
Michael Grefe
We confront the signals expected from unstable gravitino dark matter with observations of indirect dark matter detection experiments in all possible cosmic-ray channels. For this p…
Neutrino Signals from Dark Matter Decay
Laura Covi, Michael Grefe, Alejandro Ibarra +1
We investigate different neutrino signals from the decay of dark matter particles to determine the prospects for their detection, and more specifically if any spectral signature ca…
Unstable Gravitino Dark Matter and Neutrino Flux
Laura Covi, Michael Grefe, Alejandro Ibarra +1
The gravitino is a promising supersymmetric dark matter candidate which does not require exact R-parity conservation. In fact, even with some small R-parity breaking, gravitinos ar…