Identifying Non-pulsar Radiation and Predicting Chess Endgame Result Using ARSkNN

2019 ◽  
pp. 691-700
Author(s):  
Yash Agarwal ◽  
Ashish Kumar ◽  
Roheet Bhatnagar ◽  
Sumit Srivastava
Keyword(s):  
Pulsar Radiation

scholarly journals Resonant Effect of High-Energy Electron–Positron Pairs Production in Collision of Ultrarelativistic Electrons with an X-ray Electromagnetic Wave

Universe ◽  
2021 ◽  
Vol 7 (7) ◽  
pp. 210
Author(s):  
Georgii K. Sizykh ◽  
Sergei P. Roshchupkin ◽  
Victor V. Dubov
Keyword(s):  
High Energy ◽  
Energy Electron ◽  
Opening Angle ◽  
High Energy Electron ◽  
Scattered Electron ◽  
Differential Probability ◽  
X Ray ◽  
Electron Positron ◽  
Pulsar Radiation ◽  
Resonant Effect

The process of resonant high-energy electron–positron pairs production by electrons in an X-ray pulsar electromagnetic field is studied theoretically. Under the resonance conditions, the second-order process under consideration effectively reduces into two sequential first-order processes: X-ray-stimulated Compton effect and X-ray–stimulated Breit–Wheeler process. The kinematics of the process is studied in detail: the dependencies of the energy of the scattered electron on its outgoing angle and the energies of the particles of the pair on the outgoing angle of the scattered electron and the opening angle of the pair are obtained. The analysis of the number of different possible particles energies values in the entire range of the angles is also carried out, according to which the energies of the particles of the pair can take up to eight different values at a fixed outgoing angle of the scattered electron and opening angle of the pair. The estimate of the resonant differential probability per unit time of the process, which reaches the maximum value of 24 orders of the value of the non-resonant differential probability per unit time, is obtained. The angular distribution of the differential probability per unit time of the process is analyzed, particularly for the case of high-energy positrons presenting in pulsar radiation.

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.

Pulsar radiation in post-Maxwellian vacuum nonlinear electrodynamics

2016 ◽  
Vol 94 (4) ◽  
Author(s):  
V. I. Denisov ◽  
B. N. Shvilkin ◽  
V. A. Sokolov ◽  
M. I. Vasili’ev
Keyword(s):  
Nonlinear Electrodynamics ◽  
Pulsar Radiation ◽  
Vacuum Nonlinear Electrodynamics

On the Origin of Pulsar Radiation

1972 ◽  
pp. 249-259 ◽  
Author(s):  
V. V. Zheleznyakov
Keyword(s):  
Pulsar Radiation

ACCELERATING HIGH-ENERGY PULSAR RADIATION CODES

2010 ◽  
Vol 725 (2) ◽  
pp. 1903-1909 ◽  
Author(s):  
C. Venter ◽  
O. C. De Jager
Keyword(s):  
High Energy ◽  
Pulsar Radiation

Pulsar Radiation Mechanisms

Nature ◽  
1970 ◽  
Vol 227 (5257) ◽  
pp. 465-470 ◽  
Author(s):  
P. A. STURROCK
Keyword(s):  
Radiation Mechanisms ◽  
Pulsar Radiation

The Possible Effects of Scattering of Pulsar Radiation

1970 ◽  
Vol 159 ◽  
pp. L29 ◽  
Author(s):  
Arthur D. Code
Keyword(s):  
Pulsar Radiation

Statistical summaries of polarized pulsar radiation

1980 ◽  
Vol 42 ◽  
pp. 143 ◽  
Author(s):  
D. C. Backer ◽  
J. M. Rankin
Keyword(s):  
Pulsar Radiation

scholarly journals Pulsar radio beams and emission altitudes

1996 ◽  
Vol 160 ◽  
pp. 287-288
Author(s):  
Jaroslaw Kijak ◽  
Janusz A. Gil
Keyword(s):  
Emission Region ◽  
Intensity Level ◽  
Pulse Profile ◽  
Pulsar Emission ◽  
Pulsar Radio ◽  
Pulsar Radiation ◽  
Measured Profile ◽  
Field Lines ◽  
The Relationship ◽  
Pulsar Radio Emission

We verify the relationship proposed by Kijak and Gil (1996) for the pulsar radio emission altitudes(see also Eq.3 in Gil & Krawczyk, 1996), using the pulse-profile Effelsberg raw data at 1.41 GHz. We measured profile pulse-widths at the lowest intensity level corresponding to 0.01% of the maximum intensity (Fig. 1b), using the polarlog-scale technique (Hankins and Fowler, 1986). We calculated opening angles (Fig. 1a) and emission altitudes (Fig. 1c) assuming that:i) pulsar radiation is narrow-band with radius-to-frequency mapping operating in the emission region,ii) pulsar emission is beamed tangentially to the dipolar magnetic field lines,iii) the extreme profile wings originate near or at the last open field lines.

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