293 citations · 556 across the 23 of their papers we have counts for
23 papers
Ab initio simulations of neutron stars' oblique electrospheres with realistic neutron star parameters
Fabrice Mottez
Electrospheres are environments with the same origin as pulsars; a highly magnetized rotating neutron star. In pulsars, a cascade of electron-positron pair creation enriches the pl…
The Giant Radio Array for Neutrino Detection (GRAND) Collaboration -- Contributions to the 38th International Cosmic Ray Conference (ICRC 2023)
GRAND Collaboration, Rafael Alves Batista, Aurélien Benoit-Lévy +96
The Giant Radio Array for Neutrino Detection (GRAND) is an envisioned observatory of ultra-high-energy particles of cosmic origin, with energies in excess of 100 PeV. GRAND uses la…
Periodic activity from fast radio burst FRB180916 explained in the frameof the orbiting asteroid model
Guillaume Voisin, Fabrice Mottez, Philippe Zarka
Observation of fast radio bursts (FRBs) are rising very quickly with the advent of specialised instruments and surveys, and it has recently been shown that some of them repeat quas…
General solution for the vacuum electromagnetic field in the surroundings of a rotating star
S. Bonazzola, F. Mottez, J. Heyvaerts
Aims. Many recent observations of pulsars and magnetars can be interpreted in terms of neutron stars (NS) with multipole electromagnetic fields. As a first approximation, we invest…
Repeating fast radio bursts caused by small bodies orbiting a pulsar or a magnetar
Fabrice Mottez, Philippe Zarka, Guillaume Voisin
Asteroids orbiting into the highly magnetized and highly relativistic wind of a pulsar offer a favourable configuration for repeating fast radio bursts (FRB). The body in direct co…
Electron acceleration and small scale coherent structures formation by an Alfvén wave propagating in coronal interplume region
Khalil Daiffallah, Fabrice Mottez
We use 2.5-D electromagnetic particle-in-cell simulation code to investigate the acceleration of electrons in solar coronal holes through the interaction of Alfvén waves with an in…
The Giant Radio Array for Neutrino Detection (GRAND): Science and Design
GRAND Collaboration, Jaime Alvarez-Muniz, Rafael Alves Batista +48
The Giant Radio Array for Neutrino Detection (GRAND) is a planned large-scale observatory of ultra-high-energy (UHE) cosmic particles, with energies exceeding 10^8 GeV. Its goal is…
Electron-positron pair production by gamma rays in an anisotropic flux of soft photons, and application to pulsar polar caps
Guillaume Voisin, Fabrice Mottez, Silvano Bonazzola
Electron-positron pair production by collision of photons is investigated in view of application to pulsar physics. We compute the absorption rate of individual gamma-ray photons b…
The Giant Radio Array for Neutrino Detection (GRAND): Present and Perspectives
Ke Fang, Jaime Álvarez-Muñiz, Rafael Alves Batista +33
The Giant Radio Array for Neutrino Detection (GRAND) aims at detecting ultra-high energy extraterrestrial neutrinos via the extensive air showers induced by the decay of tau lepton…
Quantum theory of curvature and synchro-curvature radiation in a strong and curved magnetic field, and applications to neutron star magnetospheres
Guillaume Voisin, Silvano Bonazzola, Fabrice Mottez
In a previous paper, we derived the quantum states of a Dirac particle in a circular, intense magnetic field in the limit of low momentum perpendicular to the field with the purpos…
Dirac states of an electron in a circular intense magnetic field
Guillaume Voisin, Silvano Bonazzola, Fabrice Mottez
Neutron-star magnetospheres are structured by very intense magnetic fields extending from 100 to 10 5 km traveled by very energetic electrons and positrons with Lorentz factors up…
Do asteroids evaporate near pulsars? Induction heating by pulsar waves revisited
Kumiko Kotera, Fabrice Mottez, Guillaume Voisin +1
We investigate the evaporation of close-by pulsar companions, such as planets, asteroids, and white dwarfs, by induction heating. Assuming that the outflow energy is dominated by a…
Plasma acceleration by the interaction of parallel propagating Alfvén waves
Fabrice Mottez
It is shown that two circularly polarised Alfvén waves that propagate along the ambient magnetic field in an uniform plasma trigger non oscillating electromagnetic field components…
Radio emissions from pulsar companions : a refutable explanation for galactic transients and fast radio bursts
Fabrice Mottez, Philippe Zarka
The six known highly dispersed fast radio bursts are attributed to extragalactic radio sources, of unknown origin but extremely energetic. We propose here a new explanation - not r…
Towards a theory of extremely intermittent pulsars II: Asteroids at a close distance
Fabrice Mottez, Silvano Bonazzola, Jean Heyvaerts
We investigate whether there may be one or many companions orbiting at close distance to the light cylinder around the extremely intermittent pulsars PSR B1931+24 and PSR J1841-050…
Towards a theory of extremely intermittent pulsars I: Does something orbits PSR B1931 + 24 ?
Fabrice Mottez, Jean Heyvaerts, Silvano Bonazzola
We investigate whether one or many companions are orbiting the extremely intermittent pulsar PSR B1931+24. We constrained our analysis on previous observations of eight fundamental…
On the role of Alfvén waves as precursors of quasi-static acceleration processes in the Earth auroral zone
Fabrice Mottez
In the Earth auroral zone, the electron acceleration by Alfvén waves is sometimes a precursor of the non-propagating acceleration structures. In order to investigate how Alfvén wav…
The role Alfvén waves in the generation of Earth polar auroras
Fabrice Mottez
The acceleration of electrons at 1-10 keV energies is the cause of the polar aurora displays, and an important factor of magnetic energy transfer from the solar wind to the Earth.…
On the possibility of radio emission of planets around pulsars
Fabrice Mottez
A planet orbiting around a pulsar would be immersed in an ultra-relativistic under-dense plasma flow. It would behave as a unipolar inductor, with a significant potential drop alon…
A magnetic thrust action on small bodies orbiting a pulsar
Fabrice Mottez, J. Heyvaerts
We investigate the electromagnetic interaction of a relativistic stellar wind with small bodies in orbit around the star. Based on our work on the theory of Alfvén wings to relativ…
Magnetic coupling of planets and small bodies with a pulsar wind"
Fabrice Mottez, J. Heyvaerts
We investigate the electromagnetic interaction of a relativistic stellar wind with a planet or a smaller body in orbit around the star. This may be relevant to objects orbiting a p…
Comment on "PIC simulations of circularly polarised Alfvén wave phase mixing: A new mechanism for electron acceleration in collisionless plasmas" by Tsiklauri et al
Fabrice Mottez, Vincent Génot, Philippe Louarn
Tsiklauri et al. recently published a theoretical model of electron acceleration by Alfvén waves in a nonuniform collisionless plasmas. We compare their work with a series of resul…
Exact nonlinear analytic Vlasov-Maxwell tangential equilibria with arbitrary density and temperature profiles
Fabrice Mottez
The tangential layers are characterized by a bulk plasma velocity and a magnetic field that are perpendicular to the gradient direction. They have been extensively described in the…