Electron-positron pairs production in the pulsar magnetosphere

1981 ◽  
Vol 75 (2) ◽  
pp. 423-436 ◽  
Author(s):  
Yu. A. Rylov
Keyword(s):  
Pulsar Magnetosphere ◽  
Electron Positron

scholarly journals Beam instabilities in a magnetized pair plasma

1999 ◽  
Vol 62 (1) ◽  
pp. 65-86 ◽  
Author(s):  
MAXIM LYUTIKOV
Keyword(s):  
Growth Rates ◽  
Particle Interaction ◽  
Kinetic Regime ◽  
Pulsar Magnetosphere ◽  
Pair Plasma ◽  
Electron Positron ◽  
Pulsar Radiation ◽  
Radiation Generation ◽  
Field Lines ◽  
Beam Instabilities

Beam instabilities in the strongly magnetized electron–positron plasma of a pulsar magnetosphere are considered. We analyse the resonance conditions and estimate the growth rates of the Cherenkov and cyclotron instabilities of the ordinary (O), extraordinary (X) and Alfvén modes in two limiting regimes: kinetic and hydrodynamic. The importance of the different instabilities as a source of coherent pulsar radiation generation is then estimated, taking into account the angular dependence of the growth rates and the limitations on the length of the coherent wave–particle interaction imposed by the curvature of the magnetic field lines. We conclude that in the pulsar magnetosphere, Cherenkov-type instabilities occur in the hydrodynamic regime, while cyclotron-type instabilities occur in the kinetic regime. We argue that electromagnetic cyclotron-type instabilities on the X, O and probably Alfvén waves are more likely to develop in the pulsar magnetosphere.

scholarly journals Alfvén resonance absorption in electron-positron plasmas

2010 ◽  
Vol 6 (S274) ◽  
pp. 224-227 ◽  
Author(s):  
N. F. Cramer
Keyword(s):  
Mode Conversion ◽  
Alfven Wave ◽  
Pulsar Magnetosphere ◽  
Pulsar Radio ◽  
Inertial Alfvén Wave ◽  
Pair Plasma ◽  
Electron Positron ◽  
Normal Electron ◽  
The Magnetic Field ◽  
Pulsar Radio Emission

AbstractWaves propagating obliquely in a magnetized cold pair plasma experience an approximate resonance in the wavevector component perpendicular to the magnetic field, which is the analogue of the Alfvén resonance in normal electron-ion plasmas. Wave absorption at the resonance can take place via mode conversion to the analogue of the short wavelength inertial Alfvén wave. The Alfvén resonance could play a role in wave propagation in the pulsar magnetosphere leading to pulsar radio emission. Ducting of waves in strong plasma gradients may occur in the pulsar magnetosphere, which leads to the consideration of Alfvén surface waves, whose energy is concentrated in the region of strong gradients.

Relativistic excitation of envelope solitons in electron-positron plasmas of the pulsar magnetosphere

1988 ◽  
Vol 38 (11) ◽  
pp. 5935-5937 ◽  
Author(s):  
U. A. Mofiz ◽  
G. M. Bhuiyan ◽  
Zarin Ahmed ◽  
M. A. Asgar
Keyword(s):  
Pulsar Magnetosphere ◽  
Envelope Solitons ◽  
Electron Positron

scholarly journals Some Peculiaritiers of the Relativistic Electron-Positron Plasma Dynamics in the Pulsar Magnetosphere

2000 ◽  
Vol 177 ◽  
pp. 465-468
Author(s):  
Irakli S. Nanobashvili
Keyword(s):  
Magnetic Field ◽  
Relativistic Electron ◽  
Centrifugal Force ◽  
Plasma Particle ◽  
Pulsar Magnetosphere ◽  
Magnetic Field Generation ◽  
Plasma Dynamics ◽  
Electron Positron ◽  
Instability Development ◽  
Aperiodic Instability

AbstractSome aspects of relativistic electron-positron plasma dynamics in the pulsar magnetosphere are discussed. Namely it is shown that if we take into account the influence of centrifugal force, this gives rise to the new dynamical effect of plasma particle radial braking in the pulsar magnetosphere. Also the possibility of aperiodic instability development in the pulsar magnetosphere is demonstrated. The mechanism for the toroidal magnetic field generation is proposed. Besides, the possible changes of the pulsar magnetosphere structure caused by above mentioned processes is considered.

The Natural Wave Modes in a Pulsar Magnetosphere

1977 ◽  
Vol 3 (2) ◽  
pp. 120-122 ◽  
Author(s):  
D. B. Melrose ◽  
R. J. Stoneham
Keyword(s):  
Radio Emission ◽  
Pulsar Magnetosphere ◽  
Natural Wave ◽  
Pulsar Radio ◽  
Electron Positron ◽  
Polarization Characteristics ◽  
Pulsar Radio Emission ◽  
Wave Modes

Our purpose in this paper is to explore the properties of the natural wave modes of a relativistically streaming electron-positron gas and to apply the results to the interpretation of the polarization characteristics of pulsar radio emission.

scholarly journals Propagation of Electromagnetic Waves in Pulsar Magnetospheres

2001 ◽  
Vol 182 ◽  
pp. 77-80
Author(s):  
Ya. Istomin
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Waves ◽  
Numerical Code ◽  
Pulsar Magnetosphere ◽  
Electron Positron ◽  
The Waves

AbstractWe have developed a numerical code for the propagation of different electromagnetic modes in a pulsar magnetosphere filled by a relativistic, streaming electron-positron plasma in a strong, curved magnetic field. We determine the trajectories, limiting polarization and damping of the waves leaving the magnetosphere.

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