Multi-D magnetohydrodynamic modelling of pulsar wind nebulae: recent progress and open questions
arXiv:1610.07956 · doi:10.1017/S0022377816000957
Abstract
In the last decade, the relativistic magnetohydrodynamic (MHD) modelling of pulsar wind nebulae, and of the Crab nebula in particular, has been highly successful, with many of the observed dynamical and emission properties reproduced down to the finest detail. Here, we critically discuss the results of some of the most recent studies: namely the investigation of the origin of the radio emitting particles and the quest for the acceleration sites of particles of different energies along the termination shock, by using wisps motion as a diagnostic tool; the study of the magnetic dissipation process in high magnetization nebulae by means of new long-term three-dimensional simulations of the pulsar wind nebula evolution; the investigation of the relativistic tearing instability in thinning current sheets, leading to fast reconnection events that might be at the origin of the Crab nebula gamma-ray flares.
30 pages, 12 figures
References in corpus (15)
- Observation of an anomalous positron abundance in the cosmic radiation
- PLUTO: a Numerical Code for Computational Astrophysics
- Instability of current sheets and formation of plasmoid chains
- Particle acceleration in relativistic collisionless shocks: Fermi process at last?
- Gamma-ray flares from the Crab Nebula
- Discovery of Powerful Gamma-Ray Flares from the Crab Nebula
- Ab-initio pulsar magnetosphere: three-dimensional particle-in-cell simulations of oblique pulsars
- Simulated synchrotron emission from Pulsar Wind Nebulae
- Heating and Non-thermal Particle Acceleration in Relativistic, Transverse Magnetosonic Shock Waves in Proton-Electron-Positron Plasmas
- Non-thermal emission from relativistic MHD simulations of PWNe: from synchrotron to inverse Compton
- Tearing instability in relativistic magnetically dominated plasmas
- Rayleigh-Taylor instability in Magnetohydrodynamic Simulations of the Crab Nebula
- Variable gamma-ray emission from the Crab Nebula: short flares and long "waves"
- Constraints on particle acceleration sites in the Crab Nebula from relativistic MHD simulations
- The variability of the Crab Nebula in radio: No radio counterpart to gamma-ray flares
Cited by in corpus (14)
- Gamma-ray halos around pulsars as the key to understanding cosmic ray transport in the Galaxy
- A Constrained Transport Method for the Solution of the Resistive Relativistic MHD Equations
- Full-3D relativistic MHD simulations of Bow Shock Pulsar Wind Nebulae: dynamics
- Reverberation of pulsar wind nebulae (I): Impact of the medium properties and other parameters upon the extent of the compression
- Modeling the γ-ray Pulsar Wind Nebulae population in our Galaxy
- Modelling the interaction between relativistic and non-relativistic winds in binary pulsar systems: strong magnetization of the pulsar wind
- On the broad-band synchrotron spectra of pulsar wind nebulae
- Detection of Small Flares from the Crab Nebula with Fermi-LAT
- Deciphering the Nature of the Pulsar Wind Nebula CTB 87 with XMM-Newton
- Introducing the HD+B model for pulsar wind nebulae: a hybrid hydrodynamics/radiative approach
- Modeling Radio Circular Polarization in the Crab Nebula
- Polarization properties of turbulent synchrotron bubbles: an approach based on Chandrasekhar-Kendall functions
- Relativistic MHD modeling of magnetized neutron stars, pulsar winds, and their nebulae
- On the Impact of the Numerical Method on Magnetic Reconnection and Particle Acceleration -- I. The MHD case