354 citations · 478 across the 9 of their papers we have counts for
9 papers
Nuclear -ray emission from very hot accretion flows
Ervin Kafexhiu, Felix Aharonian, Maxim Barkov
Optically thin accretion plasmas can reach ion temperatures K and thus trigger nuclear reactions. Using a large nuclear interactions network, we studied the…
Gamma-ray emission of hot astrophysical plasmas
Ervin Kafexhiu, Felix Aharonian, Maxim Barkov
Very hot plasmas with ion temperature exceeding K can be formed in certain astrophysical environments. The distinct radiation signature of such plasmas is the -ray emi…
On the shape of the gamma-ray spectrum around the "-bump"
Rui-zhi Yang, Ervin Kafexhiu, Felix Aharonian
The "pion-decay" bump is a distinct signature of the differential energy spectrum of -rays between 100 MeV and 1 GeV produced in hadronic interactions of accelerated particles (…
Energetic gamma-ray emission from solar flares
Ervin Kafexhiu, Carlo Romoli, Andrew M. Taylor +1
Recent advances in the -ray observations of solar flares by the \textit{Fermi} satellite, demand revisions in the hadronic -ray flux computation below 1 GeV. In this work we…
Parametrization of the nucleus-nucleus gamma-ray production cross sections below 100 GeV/nucleon: Subthreshold pions and Hard photons
Ervin Kafexhiu
"Subthreshold pions" and so-called "hard photons" are two important channels for producing less than 1 GeV -rays and pairs from nuclear collisions with energy per nucleo…
Detection of persistent gamma-ray emission toward SS433/W50
Pol Bordas, Ruizhi Yang, Ervin Kafexhiu +1
The microquasar SS433 features the most energetic jets known in our Galaxy. A large fraction of the jet kinetic power is delivered to the surrounding W50 nebula at the jet terminat…