Search Results - "Fraschetti, F."
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TURBULENT AMPLIFICATION OF A MAGNETIC FIELD DRIVEN BY THE DYNAMO EFFECT AT RIPPLED SHOCKS
Published in The Astrophysical journal (20-06-2013)“…We analytically derive the vorticity generated downstream of a two-dimensional (2D) rippled hydromagnetic shock neglecting fluid viscosity and resistivity. The…”
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Bi-directional streaming of particles accelerated at the STEREO-A shock on 2008 March 9
Published in Monthly notices of the Royal Astronomical Society (01-12-2020)“…ABSTRACT We present an interpretation of anisotropy and intensity of supra-thermal ions near a fast quasi-perpendicular reverse shock measured by Solar…”
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Vortical field amplification and particle acceleration at rippled shocks
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-04-2014)“…Supernova Remnant (SNR) shocks are believed to accelerate charged particles and to generate strong turbulence in the post-shock flow. From high-energy…”
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Particle acceleration model for the broad-band baseline spectrum of the Crab nebula
Published in Monthly notices of the Royal Astronomical Society (11-11-2017)“…Abstract We develop a simple one-zone model of the steady-state Crab nebula spectrum encompassing both the radio/soft X-ray and the GeV/multi-TeV observations…”
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Mottled Protoplanetary Disk Ionization by Magnetically Channeled T Tauri Star Energetic Particles
Published in The Astrophysical journal (01-02-2018)“…The evolution of protoplanetary disks is believed to be driven largely by angular momentum transport resulting from magnetized disk winds and turbulent…”
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Stellar Energetic Particles in the Magnetically Turbulent Habitable Zones of TRAPPIST-1-like Planetary Systems
Published in The Astrophysical journal (20-03-2019)“…Planets in close proximity to their parent star, such as those in the habitable zones around M dwarfs, could be subject to particularly high doses of particle…”
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Localized enhancements of energetic particles at oblique collisionless shocks
Published in Monthly notices of the Royal Astronomical Society (21-04-2015)“…We investigate the spatial distribution of charged particles accelerated by non-relativistic oblique fast collisionless shocks using three-dimensional…”
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EARLY-TIME VELOCITY AUTOCORRELATION FOR CHARGED PARTICLES DIFFUSION AND DRIFT IN STATIC MAGNETIC TURBULENCE
Published in The Astrophysical journal (20-08-2012)“…Using test-particle simulations, we investigate the temporal dependence of the two-point velocity correlation function for charged particles scattering in a…”
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Vortical Amplification of the Magnetic Field at an Inward Shock of Supernova Remnant Cassiopeia A
Published in Physical review letters (22-06-2018)“…We present an interpretation of the time variability of the x-ray flux recently reported from a multiepoch campaign of 15 years of observations of the…”
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Very Large and Long-lasting Anisotropies Caused by Sunward Streaming Energetic Ions: Solar Orbiter and STEREO A Observations
Published in Astrophysical journal. Letters (01-10-2024)“…Abstract The anisotropy of energetic particles provides essential information to help resolve the underlying fundamental physics of their spatial…”
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Time-dependent Perpendicular Transport of Fast Charged Particles in a Turbulent Magnetic Field
Published in The Astrophysical journal (20-06-2011)“…We present an analytic derivation of the temporal dependence of the perpendicular transport coefficient of charged particles in magnetostatic turbulence, for…”
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Electron acceleration by wave turbulence in a magnetized plasma
Published in Nature physics (01-05-2018)“…Astrophysical shocks are commonly revealed by the non-thermal emission of energetic electrons accelerated in situ 1 – 3 . Strong shocks are expected to…”
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TURBULENT AMPLIFICATION OF A MAGNETIC FIELD DRIVEN BY THE DYNAMO EFFECT AT RIPPLED SHOCKS
Published in The Astrophysical journal (28-05-2013)Get full text
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Two-zone model for the broadband Crab nebula spectrum: microscopic interpretation
Published in EPJ Web of Conferences (01-01-2017)“…We develop a simple two-zone interpretation of the broadband baseline Crab nebula spectrum between 10−5 eV and ~ 100 TeV by using two distinct log-parabola…”
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Ultra-high-energy cosmic rays from the radio lobes of active galactic nuclei
Published in Monthly notices of the Royal Astronomical Society (11-12-2008)“…ABSTRACT In the past year, the HiRes and Auger collaborations have reported the discovery of a high‐energy cut‐off in the ultra‐high‐energy cosmic ray…”
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Maser radiation from collisionless shocks: application to astrophysical jets
Published in High power laser science and engineering (2019)“…This paper describes a model of electron energization and cyclotron-maser emission applicable to astrophysical magnetized collisionless shocks. It is motivated…”
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GRB 980425, SN1998BW and the EMBH model
Published in Advances in space research (2004)“…The EMBH model, previously developed using GRB 991216 as a prototype, is here applied to GRB 980425. We fit the luminosity observed in the 40–700 keV, 2–26 keV…”
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Evidence for isotropic emission in GRB991216
Published in Advances in space research (2006)“…The issue of the possible presence or absence of jets in GRBs is here re-examined for GRB991216. We compare and contrast our theoretically predicted afterglow…”
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Multispacecraft Observations of a Widespread Solar Energetic Particle Event on 2022 February 15–16
Published in The Astrophysical journal (01-03-2024)“…Abstract On 2022 February 15–16, multiple spacecraft measured one of the most intense solar energetic particle (SEP) events observed so far in Solar Cycle 25…”
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Possible role of magnetic reconnection in the electromagnetic counterpart of binary black hole merger
Published 10-04-2018“…We propose a qualitative scenario to interpret the argued association between the direct measurement of the gravitational wave event GW150914 by Laser…”
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