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4 papers · 2 filters
Connection between PAHs and small hydrocarbons in the Horsehead Nebula Photo-Dissociation Region
David Teyssier, David Fosse, Maryvonne Gerin +3
We present recent observations of small hydrocarbons (C3H2, C2H, C4H) with high abundances in the Photo-Dissociation Region of the Horsehead nebula. Our results show for the first…
Detectability of Space-Time Fluctuations in Ultra High Energy Cosmic Ray Experiments
R. Aloisio, P. Blasi, A. Galante +2
It is generally expected that quantum gravity affects the structure of space-time by introducing stochastic fluctuations in the geometry, and, ultimately, in the measurements of fo…
Nonlinear clustering during the cosmic Dark Ages and its effect on the 21-cm background from minihalos
Ilian T. Iliev, Evan Scannapieco, Hugo Martel +1
Hydrogen atoms inside virialized minihalos generate a radiation background from redshifted 21-cm line emission whose angular fluctuations reflect clustering during before and durin…
Gamma rays from clusters of galaxies
Pasquale Blasi
The search for gamma radiation in clusters of galaxies represents a precious tool to investigate the history of these large scale structures. Clusters or sources within them accele…