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Pulsars as the Sources of High Energy Cosmic Ray Positrons
Dan Hooper, Pasquale Blasi, Pasquale Dario Serpico
Recent results from the PAMELA satellite indicate the presence of a large flux of positrons (relative to electrons) in the cosmic ray spectrum between approximately 10 and 100 GeV.…
A global autocorrelation study after the first Auger data: impact on the number density of UHECR sources
A. Cuoco, S. Hannestad, T. Haugboelle +2
We perform an autocorrelation study of the Auger data with the aim to constrain the number density n_s of ultrahigh energy cosmic ray (UHECR) sources, estimating at the same time t…
Primordial Nucleosynthesis: from precision cosmology to fundamental physics
F. Iocco, G. Mangano, G. Miele +2
We present an up-to-date review of Big Bang Nucleosynthesis (BBN). We discuss the main improvements which have been achieved in the past two decades on the overall theoretical fram…
Role of dense matter in collective supernova neutrino transformations
A. Esteban-Pretel, A. Mirizzi, S. Pastor +4
For neutrinos streaming from a supernova (SN) core, dense matter suppresses self-induced flavor transformations if the electron density n_e significantly exceeds the neutrino densi…
Optimal angular window for observing Dark Matter annihilation from the Galactic Center region: the case of gamma-ray lines
Pasquale D. Serpico, Gabrijela Zaharijas
Although the emission of radiation from dark matter annihilation is expected to be maximized at the Galactic Center, geometric factors and the presence of point-like and diffuse ba…
The Milky Way as a Kiloparsec-Scale Axionscope
Melanie Simet, Dan Hooper, Pasquale D. Serpico
Very high energy gamma-rays are expected to be absorbed by the extragalactic background light over cosmological distances via the process of electron-positron pair production. Rece…