Zobrazeno 1 - 10
of 170
pro vyhledávání: '"Evoli, Carmelo"'
Autor:
Evoli, Carmelo, Dupletsa, Ulyana
When examining the abundance of elements in the placid interstellar medium, a deep hollow between helium and carbon becomes apparent. Notably, the fragile light nuclei Lithium, Beryllium, and Boron (collectively known as LiBeB) are not formed, with t
Externí odkaz:
http://arxiv.org/abs/2309.00298
The recent detection of the Geminga PWN by HAWC in the multi-TeV band allows us to infer precious information about the transport of pairs in the immediate surroundings of the pulsar and on the spectrum of pairs contributed by a Geminga-like pulsar t
Externí odkaz:
http://arxiv.org/abs/2305.08019
Autor:
Luque, Pedro De la Torre, Gaggero, Daniele, Grasso, Dario, Fornieri, Ottavio, Egberts, Kathrin, Steppa, Constantin, Evoli, Carmelo
Publikováno v:
A&A 672, A58 (2023)
The Tibet AS$\gamma$ and LHAASO collaborations recently reported the observation of a $\gamma$-ray diffuse emission with energy up to the PeV from the Galactic plane. We discuss the relevance of non-uniform cosmic-ray transport scenarios and the impl
Externí odkaz:
http://arxiv.org/abs/2203.15759
The precision measurements of the spectra of cosmic ray nuclei and leptons in recent years have revealed the existence of multiple features, such as the spectral break at $\sim 300$ GV rigidity seen by PAMELA and AMS-02 and more recently confirmed by
Externí odkaz:
http://arxiv.org/abs/2111.01171
Publikováno v:
A&A 653, A18 (2021)
The study of non-thermal processes such as synchrotron emission, inverse Compton scattering, bremsstrahlung and pion production is crucial to understand the properties of the Galactic cosmic-ray population, to shed light on their origin and confineme
Externí odkaz:
http://arxiv.org/abs/2105.13165
Autor:
Carenza, Pierluca, Evoli, Carmelo, Giannotti, Maurizio, Mirizzi, Alessandro, Montanino, Daniele
Publikováno v:
Phys. Rev. D 104, 023003 (2021)
The Milky-Way magnetic field can trigger conversions between photons and axion-like particles (ALPs), leading to peculiar features on the observable photon spectra. Previous studies considered only the regular component of the magnetic field. However
Externí odkaz:
http://arxiv.org/abs/2104.13935
Publikováno v:
Phys. Rev. D 103, 123010 (2021)
The recent measurement of the spectra of intermediate mass nuclei and iron nuclei carried out with the AMS-02 experiment provided us with the most complete set of data on cosmic ray fluxes to date, and allowed us to test the standard model for the tr
Externí odkaz:
http://arxiv.org/abs/2102.12576
Publikováno v:
Phys. Rev. D 103, 083010 (2021)
We present a novel calculation of the spectrum of electrons and positrons from random sources, supernova remnants and pulsars, distributed within the spiral arms of the Galaxy. The pulsar emissivity in terms of electron-positron pairs is considered a
Externí odkaz:
http://arxiv.org/abs/2010.11955
Publikováno v:
Phys. Rev. D 102, 103016 (2020)
The diffusive motion of charged particles in synthetic magnetic turbulence with different properties is investigated by using numerical simulations with unprecedented dynamical range, which allow us to ensure that both the inertial range and the long
Externí odkaz:
http://arxiv.org/abs/2007.09142
Publikováno v:
Phys. Rev. Lett. 125, 051101 (2020)
We show that the fine structure of the electron spectrum in cosmic rays, especially the excess claimed by AMS-02 at energies $\sim$42 GeV, is fully accounted for in terms of inverse Compton losses in the photon background dominated by ultraviolet, in
Externí odkaz:
http://arxiv.org/abs/2007.01302