135 citations · 826 across the 25 of their papers we have counts for
26 papers
The Potential Contribution of Radiative Supernova Remnants to the Local Cosmic Ray Spectrum
P. Cristofari, V. H. M. Phan, S. Recchia +1
Recent observations of very-high-energy gamma rays from massive stellar clusters and microquasars have demonstrated that these systems can efficiently accelerate particles to very…
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…
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…
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…
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…
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…
On the origin of the spectral features observed in the cosmic ray spectrum
Sarah Recchia, Stefano Gabici
Recent measurements revealed the presence of several features in the cosmic ray spectrum. In particular, the proton and helium spectra exhibit a spectral hardening at 300…
Prospects for -ray observations of the Perseus galaxy cluster with the Cherenkov Telescope Array
The Cherenkov Telescope Array Consortium, :, K. Abe +564
Galaxy clusters are expected to be dark matter (DM) reservoirs and storage rooms for the cosmic-ray protons (CRp) that accumulate along the cluster's formation history. Accordingly…
The Second Radio Synchrotron Background Workshop: Conference Summary and Report
J. Singal, N. Fornengo, M. Regis +24
We summarize the second radio synchrotron background workshop, which took place June 15-17, 2022 in Barolo, Italy. This meeting was convened because available measurements of the d…
Stochasticity of Cosmic Rays from Supernova Remnants and the Ionization Rates in Molecular Clouds
Vo Hong Minh Phan, Sarah Recchia, Philipp Mertsch +1
Cosmic rays are the only agent able to penetrate into the interior of dense molecular clouds. Depositing (part of) their energy through ionisation, cosmic rays play an essential ro…
Grammage of cosmic rays in the proximity of supernova remnants embedded in a partially ionized medium
S. Recchia, D. Galli, L. Nava +5
We investigate the damping of Alfvén waves generated by the cosmic ray resonant streaming instability in the context of the cosmic ray escape and propagation in the proximity of su…
The Origin of Galactic Cosmic Rays as Revealed by their Composition
Vincent Tatischeff, John C. Raymond, Jean Duprat +2
Galactic cosmic-rays (GCRs) are thought to be accelerated in strong shocks induced by massive star winds and supernova explosions sweeping across the interstellar medium. But the p…
Does the Geminga, Monogem and PSR J0622+3749 -ray halos imply slow diffusion around pulsars?
Sarah Recchia, Mattia Di Mauro, Felix A. Aharonian +4
The HAWC Collaboration has reported the detection of an extended -ray emission around the Geminga and Monogem pulsars of a few degree extension. Very recently, the LHAASO Collab…
Stochastic Fluctuations of Low-Energy Cosmic Rays and the Interpretation of Voyager Data
Vo Hong Minh Phan, Florian Schulze, Philipp Mertsch +2
Data from the Voyager probes have provided us with the first measurement of cosmic ray intensities at MeV energies, an energy range which had previously not been explored. Simple e…
Giant cosmic ray halos around M31 and the Milky Way
S. Recchia, S. Gabici, F. A. Aharonian +1
Recently, a diffuse emission of 1-100 GeV -rays has been detected from the direction of Andromeda. The emission is centered on the galaxy, and extends for kpc awa…
Cosmic ray driven galactic winds
Sarah Recchia
Galactic winds constitute a primary feedback process in the ecology and evolution of galaxies. They are ubiquitously observed and exhibit a rich phenomenology, whose origin is acti…
Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation
The Cherenkov Telescope Array Consortium, :, H. Abdalla +496
The Cherenkov Telescope Array (CTA), the new-generation ground-based observatory for -ray astronomy, provides unique capabilities to address significant open questions in astrop…
Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre
The Cherenkov Telescope Array Consortium, :, A. Acharyya +449
We provide an updated assessment of the power of the Cherenkov Telescope Array (CTA) to search for thermally produced dark matter at the TeV scale, via the associated gamma-ray sig…
Non-linear diffusion of cosmic rays escaping from supernova remnants - II. Hot ionized media
L. Nava, S. Recchia, S. Gabici +3
We study the problem of the escape and transport of Cosmic-Rays (CR) from a source embedded in a fully ionised, hot phase of the interstellar medium (HIM). In particular, we model…
Can a cosmic ray carrot explain the ionization level in diffuse molecular clouds?
S. Recchia, V. H. M. Phan, S. Biswas +1
Low energy cosmic rays are the major ionization agents of molecular clouds. However, it has been shown that, if the cosmic ray spectrum measured by Voyager 1 is representative of t…
A local fading accelerator and the origin of TeV cosmic ray electrons
S. Recchia, S. Gabici, F. A. Aharonian +1
The total cosmic ray electron spectrum (electrons plus positrons) exhibits a break at a particle energy of and extends without any attenuation up to $\rm \sim 20~ T…
Non-linear acceleration at supernova remnant shocks and the hardening in the cosmic ray spectrum
S. Recchia, S. Gabici
In the last few years several experiments have shown that the cosmic ray spectrum below the knee is not a perfect power-law. In particular, the proton and helium spectra show a spe…
Cosmic ray driven winds in the Galactic environment and the cosmic ray spectrum
S. Recchia, P. Blasi, G. Morlino
Cosmic Rays escaping the Galaxy exert a force on the interstellar medium directed away from the Galactic disk. If this force is larger than the gravitational pull due to the mass e…