Analytical and numerical investigations of relativistic particle acceleration in a current layer

2006 ◽  
Vol 25 (4) ◽  
pp. 261-273 ◽  
Author(s):  
A. V. Oreshina ◽  
B. V. Somov
Keyword(s):  
Particle Acceleration ◽  
Relativistic Particle ◽  
Current Layer ◽  
Numerical Investigations ◽  
A Current

Diagnosing relativistic particle acceleration in AGN jets

2017 ◽  
Author(s):  
Markus Böttcher ◽  
Matthew Baring ◽  
Errol J. Summerlin
Keyword(s):  
Particle Acceleration ◽  
Relativistic Particle

scholarly journals On relativistic particle acceleration in molecular clouds

1987 ◽  
Vol 228 (4) ◽  
pp. 843-868 ◽  
Author(s):  
V. A. Dogiel ◽  
A. V. Gurevich ◽  
Y. N. Istomin ◽  
K. P. Zybin
Keyword(s):  
Particle Acceleration ◽  
Molecular Clouds ◽  
Relativistic Particle

scholarly journals Tearing and surface preserving electron magnetohydrodynamic modes in a current layer

2016 ◽  
Vol 23 (3) ◽  
pp. 032106
Author(s):  
Gurudatt Gaur ◽  
Predhiman K. Kaw
Keyword(s):  
Current Layer ◽  
A Current

scholarly journals Hydromagnetic Stability of a Current Layer

1955 ◽  
Vol 8 (3) ◽  
pp. 319 ◽  
Author(s):  
RE Loughhead
Keyword(s):  
Magnetic Field ◽  
Normal Modes ◽  
Marginal Stability ◽  
Current Layer ◽  
Special Cases ◽  
Uniform Current ◽  
A Current

The hydromagnetic stability of a uniform current flowing along a magnetic field and confined within a pair of parallel planes is discussed by the method of normal modes. The condition for marginal stability is derived and discussed with reference to two special cases.

scholarly journals Outflows and particle acceleration in the accretion disks of young stars

2019 ◽  
Vol 201 ◽  
pp. 09004
Author(s):  
Sergey Khaibrakhmanov ◽  
Alexander Dudorov
Keyword(s):  
Particle Acceleration ◽  
Accretion Disks ◽  
High Speed ◽  
Large Scale ◽  
T Tauri Stars ◽  
Radiative Heat Exchange ◽  
Current Layer ◽  
X Rays ◽  
Disk Structure ◽  
T Tauri

Magneto-gas-dynamic (MGD) outflows from the accretion disks of T Tauri stars with fossil large-scale magnetic fileld are investigated. We consider two mechanisms of the outflows: rise of the magnetic flux tubes (MFT) formed in the regions of efficient generation of the toroidal magnetic fileld in the disk due to Parker instability, and acceleration of particles in the current layer formed near the boundary between stellar magnetosphere and the accretion disk. Structure of the disk is calculated using our MGD model of the accretion disks. We simulate dynamics of the MFT in frame of slender flux tube approximation taking into account aerodynamic and turbulent drags, and radiative heat exchange with external gas. Particle acceleration in the current layer is investigated on the basis of Sweet-Parker model of magnetic reconnection. Our calculations show that the MFT can accelerate to velocities up to 50 km s-1 causing periodic outflows from the accretion disks. Estimations of the particle acceleration in the current layer are applied to interpret high-speed jets and X-rays observed in T Tauri stars with the accretion disks.

scholarly journals Modeling the Radio and X-ray Emission of SN 1993J and SN 2002ap

2005 ◽  
Vol 192 ◽  
pp. 59-69
Author(s):  
Claes Fransson ◽  
Claes-Ingvar Björnsson
Keyword(s):  
Magnetic Field ◽  
Particle Acceleration ◽  
Loss Rate ◽  
Relativistic Particle ◽  
Mass Loss Rate ◽  
Light Curves ◽  
Magnetic Field Generation ◽  
Absorption Mechanism ◽  
X Ray ◽  
Physical Mechanisms

SummaryModeling of radio and X-ray observations of supernovae interacting with their circumstellar media are discussed, with special application to SN 1993J and SN 2002ap. We emphasize the importance of including all relevant physical mechanisms, especially for the modeling of the radio light curves. The different conclusions for the absorption mechanism (free-free or synchrotron self-absorption), as well as departures from an ρ ∝ r−2 CSM, as inferred by some authors, are discussed in detail. We conclude that the evidence for a variation in the mass loss rate with time is very weak. The results regarding the efficiencies of magnetic field generation and relativistic particle acceleration are summarized.

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