Interaction of charged particles with the field of a rotating magnetic dipole in the presence of electromagnetic radiation

Astrophysics ◽  
1980 ◽  
Vol 16 (2) ◽  
pp. 170-181 ◽  
Author(s):  
A. K. Avetisyan
Keyword(s):  
Electromagnetic Radiation ◽  
Magnetic Dipole ◽  
Charged Particles

Electromagnetic radiation

2018 ◽  
Author(s):  
J. Pierrus
Keyword(s):  
Electromagnetic Radiation ◽  
Magnetic Dipole ◽  
Antenna Arrays ◽  
Electric Dipole ◽  
Free Electron ◽  
Vector Potential ◽  
Electric Quadrupole ◽  
Multipole Expansion ◽  
Multipole Moments

This chapter begins by expressing the multipole expansion of the dynamic vector potential A ( r, t) in terms of electric and magnetic multipole moments. Differentiation of A ( r, t) leads directly to the fields E ( r, t) and B ( r, t), which have a component transporting energy away from the sources to infinity. This component is called electromagnetic radiation and it arises only when electric charges experience an acceleration. A range of questions deal with the various types of radiation, including electric dipole and magnetic dipole–electric quadrupole. Larmor’s formula is applied in both its non-relativistic and relativistic forms. Also considered are some applications involving antennas, antenna arrays and the scattering of radiation by a free electron.

scholarly journals Transport of radiation & energetic particles in accretion flows

1986 ◽  
Vol 119 ◽  
pp. 407-408
Author(s):  
R. Cowsik ◽  
M.A. Lee
Keyword(s):  
Electromagnetic Radiation ◽  
Charged Particles ◽  
Energetic Particles ◽  
Compact Objects ◽  
X Ray ◽  
Accretion Flows

The equations describing the transport of suprathermal charged particles and electromagnetic radiation across accretion flows onto compact objects are solved analytically, including the effect of shocks in the flows. These solutions indicate (a) accretion flows with shocks accelerate particles very efficiently upto ultra-relativistic energies. (b) the emergent spectra of electromagnetic radiation from such flows reproduce the observed spectra of quasars from the infrared to the hard X-ray region.

On the magnetic dipole absorption of electromagnetic radiation by a fine conducting particle

2004 ◽  
Vol 49 (12) ◽  
pp. 1605-1609 ◽  
Author(s):  
S. V. Berezkina ◽  
I. A. Kuznetsova ◽  
A. A. Yushkanov
Keyword(s):  
Electromagnetic Radiation ◽  
Magnetic Dipole ◽  
Conducting Particle

Transport of neutrinos, radiation and energetic particles in accretion flows

1982 ◽  
Vol 383 (1785) ◽  
pp. 409-437 ◽  
Keyword(s):  
Cosmic Rays ◽  
Electromagnetic Radiation ◽  
Gravitational Collapse ◽  
Charged Particles ◽  
Energetic Particles ◽  
Compact Objects ◽  
Red Giants ◽  
X Ray ◽  
Accretion Flows

The equations describing the transport of suprathermal charged particles, electromagnetic radiation and neutrinos across accretion flows onto compact objects are solved analytically, the effects of shocks in the flow being included. These solutions are used in discussing three illustrative astrophysical examples: acceleration of cosmic rays, generation of spectral continua in quasars and the effect of neutrinos during the collapse of supernova precursors. The main results are: ( а ) Accretion flows with shocks accelerate cosmic rays very efficiently up to the highest energies. ( b ) The emergent spectra of electromagnetic radiation from such flows reproduce the observed spectra of quasars from infrared to the hard X-ray region. ( c ) The neutrinos in the collapsing cores of red giants develop a very hard non-thermal tail in their distribution facilitating the rebound of the gravitational collapse leading to the supernovae.

Scattering of Non-Relativistic Charged Particles by Electromagnetic Radiation

2017 ◽  
Vol 72 (12) ◽  
pp. 1173-1177
Author(s):  
M. Apostol
Keyword(s):  
Electromagnetic Radiation ◽  
Cross Section ◽  
Charged Particles ◽  
Momentum Conservation ◽  
Potential Scattering ◽  
Photon Absorption ◽  
Focal Region ◽  
Electrons And Ions ◽  
The Cross ◽  
Energy And Momentum

AbstractThe cross-section is computed for non-relativistic charged particles (like electrons and ions) scattered by electromagnetic radiation confined to a finite region (like the focal region of optical laser beams). The cross-section exhibits maxima at scattering angles given by the energy and momentum conservation in multi-photon absorption or emission processes. For convenience, a potential scattering is included and a comparison is made with the well-known Kroll-Watson scattering formula. The scattering process addressed in this paper is distinct from the process dealt with in previous studies, where the scattering is immersed in the radiation field.

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