July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Connections between cosmic-ray physics, gamma-ray data analysis and Dark Matter detection

Aug 3, 2015, 5:00 PM
World Forum Theater (World Forum)

World Forum Theater

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Highlight talk GA-TH High-Light Talks


Daniele Gaggero


In the first part, I present a detailed overview on recent results regarding modeling of cosmic-ray (CR) propagation in the Galaxy and in the Heliosphere. In particular I focus on the necessity to go beyond the standard and simplified picture of uniform and homogeneous diffusion, showing that gamma-ray data point towards different propagation regimes in different regions of the Galaxy. I also sketch the impact of large-scale structure on CR observables. Concerning the propagation of the Heliosphere, I mention the necessity to consider a charge-dependent modulation scenario. In the second part, I discuss several aspects regarding the recent claim of a gamma-ray excess in the Galactic center region, discussing in particular the interpretation in terms of Dark Matter, compared to other astrophysical interpretations. I will emphasize the interplay between the non-trivial aspects of CR propagation discussed in the first part and the understanding of the GC excess origin. In particular, I will show in detail how the knowledge of the CR transport parameters and solar modulation is crucial to investigate the compatibility with other channels (namely antiprotons) and to provide alternative astrophysical interpretations.
Registration number following "ICRC2015-I/" 245
Collaboration -- not specified --

Primary author

Presentation materials