F. Donato

Publications168
h-index42
Citations5,426
Highly Influential Citations191
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Cosmic Rays below Z = 30 in a Diffusion Model: New Constraints on Propagation Parameters
Cosmic-ray nuclei fluxes are expected to be measured with high precision in the near future. For instance, high-quality data on the antiproton component could give important clues about the nature of…
A constant dark matter halo surface density in galaxies
TLDR
The recent finding that the central surface density � 0Dr0ρ0 of galaxy dark matter halos, where r0 and ρ0 are the halo core radius and central density, is nearly constant and independent of galaxy luminosity is confirmed.
Positrons from dark matter annihilation in the galactic halo: Theoretical uncertainties
Indirect detection signals from dark matter annihilation are studied in the positron channel. We discuss in detail the positron propagation inside the galactic medium: we present novel solutions of…
Antiprotons in cosmic rays from neutralino annihilation
Galactic electrons and positrons at the Earth: new estimate of the primary and secondary fluxes
Context. The so-called excess of cosmic ray (CR) positrons observed by the PAMELA satellite up to 100 GeV has led to many interpretation attempts, from standard astrophysics to a possible exotic…
Antideuterons as a Signature of Supersymmetric Dark Matter
Once the energy spectrum of the secondary component is well understood, measurements of the antiproton cosmic–ray flux at the Earth will be a powerful way to indirectly probe for the existence of…
Antideuteron fluxes from dark matter annihilation in diffusion models
Antideuterons are among the most promising galactic cosmic-ray-related targets for dark matter indirect detection. Currently only upper limits exist on the flux, but the development of new…
Galactic secondary positron flux at the Earth
Context. Secondary positrons are produced by spallation of cosmic rays within the interstellar gas. Measurements have been typically expressed in terms of the positron fraction, which exhibits an…
Antiprotons in cosmic rays from neutralino annihilation
We calculate the antiproton flux due to relic neutralino annihilations, in a two–dimensional diffusion model compatible with stable and radioactive cosmic ray nuclei. We find that the uncertainty in…
Interpretation of AMS-02 electrons and positrons data
We perform a combined analysis of the recent AMS-02 data on electrons, positrons, electrons plus positrons and positron fraction, in a self-consistent framework where we realize a theoretical…
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