6 papers
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…
Wolf-Rayet stars as tracers of gamma-ray emission: Isolated stars and stellar clusters/associations
Alexandre Inventar, Giada Peron, Sarah Recchia +1
Context: Recent gamma-ray observations of young star clusters revealed that stellar wind termination shocks accelerate particles, with the energy reservoir provided by the mechanic…
Gamma-rays from Wolf-Rayet stellar winds
A. Inventar, G. Peron, S. Recchia +1
Gamma-ray observations of young star clusters have recently provided evidence for particle acceleration occurring at stellar wind termination shocks, fueled by the mechanical energ…
Can cosmic rays explain the high ionisation rates in the Galactic centre?
Sruthiranjani Ravikularaman, Sarah Recchia, Vo Hong Minh Phan +1
The Central Molecular Zone (CMZ), located in the centre of the Milky Way, is a roughly cylindrical structure of molecular gas extending up to parsecs around the supermassive black…
Galactic transient sources with the Cherenkov Telescope Array Observatory
Cherenkov Telescope Array Observatory Consortium
A wide variety of Galactic sources show transient emission at soft and hard X-ray energies: low- and high-mass X-ray binaries containing compact objects, isolated neutron stars exh…
Cosmic rays cannot explain the high ionisation rates in the Galactic centre
Sruthiranjani Ravikularaman, Sarah Recchia, Vo Hong Minh Phan +1
The H ionisation rate in the central molecular zone, located in the Galactic centre, is estimated to be , based on observations of H$_3^+…