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19942026
most citedVery-High-Energy Gamma Rays from a Distant Quasar: How Transparent Is the Universe?

446 citations · 4k across the 80 of their papers we have counts for

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Showing 2007 · astro-phShow all

9 papers · 2 filters

astro-ph2007

Very-High Energy Gamma Astrophysics

Alessandro De Angelis, Oriana Mansutti, Massimo Persic

High-energy photons are a powerful probe for astrophysics and for fundamental physics under extreme conditions. During the recent years, our knowledge of the most violent phenomena…

astro-ph2007★ 21 cited

Constraints on Large-Scale Magnetic Fields from the Auger Results

Alessandro De Angelis, Massimo Persic, Marco Roncadelli

A recent article from the Pierre Auger Collaboration links the direction of charged cosmic rays to possible extragalactic sites of emission. The correlation of the direction of suc…

astro-ph2007★ 74 cited

Upper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy Draco

MAGIC Collaboration, J. Albert

The nearby dwarf spheroidal galaxy Draco with its high mass to light ratio is one of the most auspicious targets for indirect dark matter searches. Annihilation of hypothetical DM…

astro-ph2007★ 15 cited

Intergalactic absorption and blazar gamma-ray spectra

Massimo Persic, Alessandro De Angelis

The distribution of TeV spectral slopes versus redshift for currently known TeV blazars (16 sources with z<0.21, and one with z>0.25) is essentially a scatter plot with hardly any…

astro-ph2007★ 1 cited

Gamma-ray blazars: the combined AGILE and MAGIC views

M. Persic, A. DeAngelis, F. Longo +1

We describe the emission properties of blazars, i.e. the AGNs that, due to their peculiar orientation w.r.t. the observer, allow the most penetrating and direct view of their centr…

astro-ph2007★ 1 cited

VHE astrophysics: recent developments

Massimo Persic, Alessandro De Angelis

We review the current status, and some open issues, of VHE astrophysics.