10 papers
Young Massive Star Clusters as TeV Emitters: Constraints from H.E.S.S. and LHAASO
Rowan Batzofin, Pierre Cristofari, Kathrin Egberts
Young massive star clusters (YMSCs) have been proposed as excellent candidates for the main sources of Galactic cosmic rays (CRs) up to the PeV range. The detection and study of ga…
Dust-driven streaming instability and magnetic field amplification downstream of supernova remnant shocks
S. Gabici, J. C. Raymond, A. Ciardi +3
The acceleration of cosmic rays up to PeV energies at supernova remnant shocks requires an amplification of the ambient magnetic field. The amplification mechanism must operate ups…
Can a single supernova remnant account for the gamma-ray emission of G106.3+2.7?
P. Cristofari, G. Emery, T. Lubrano di Vavaria +4
SNR G106.3+2.7 is a complex TeV emitting source whose emission is still poorly understood. It has especially been at the center of numerous discussions on its potential for being a…
Very High Energy Gamma Rays from Ultra Fast Outflows
B. Le Nagat Neher, E. Peretti, P. Cristofari +1
Context. Ultra fast outflows (UFOs) from active galactic nuclei (AGN) are expected to lead to the formation of sub-relativistic strong shocks expanding in a dense circumnuclear med…
Microphysics of diffusive shock acceleration: impact on the spectrum of accelerated particles
Pierre Cristofari, Pasquale Blasi, Damiano Caprioli
Diffusive shock acceleration at collisionless shocks remains the most likely process for accelerating particles in a variety of astrophysical sources. While the standard prediction…
Particle acceleration at radiative supernova remnant shocks
Pierre Cristofari
Numerous astrophysical shock waves evolve in an environment where the radiative cooling behind the shock affects the hydrodynamical structure downstream, thereby influencing the po…