Книга: Ahmed Saleh «Acceleration Mechanisms for Ultra High Energy Cosmic Rays»
|
Производитель: "LAP Lambert Academic Publishing" The discovery and detection of ultra high energy cosmic rays (UHECRs) of energy up to 10^20 eV have posed a serious challenge to the astrophysicists about their origin as well as the physical acceleration mechanisms. Some theoretical approaches in the past assuming elastic scatterings of cosmic charged particles with magnetic clouds then developed by assuming the presence of shock waves originated from supernova remnant succeeded to explain the existence of energies up to 10^15 eV. The assumption of particle-electromagnetic field interaction with constant fields succeeded to interpret the possibility of finding cosmic particles of energies up to 10^20 eV. From the astrophysical plasma aspects, the interaction of cosmic charged particles with the time varying magnetic field, like that present in the magnetosphere of pulsar and magnetar, as potent sources can lead to higher energies. Moreover, the coupling of the cosmic charged particle-spatially varying electromagnetic field... ISBN:9783659179471 Издательство: "LAP Lambert Academic Publishing" (2012)
ISBN: 9783659179471 |
Ahmed Saleh
Hussein Ahmed Salah
Hussein Ahmed Salah (en arabe : حسين أحمد صلاح) , né le 31 décembre 1956 à Ali Sabieh, est un ancien marathonien djiboutien. Son record personnel est de 2h07'07.
Il a remporté la première coupe du monde du marathon à Hiroshima en 1985. Ensuite, il a été vice-champion en remportant la médaille d'argent de la seconde coupe du monde du marathon à Séoul en 1987. En 1988, il a été médaillé de bronze aux Jeux olympiques de Séoul dans l'épreuve du marathon. Par la suite, il a été également médaillé d'argent lors de la coupe du monde de Marathon en 1991. Lors des Jeux olympiques de 2008 à Pékin, il a été le porte-drapeau de la délégation djiboutienne.
Palmarès
Jeux olympiques d'été
- Corée du Sud)
- Médaille de bronze sur le marathon
Championnats du monde d'athlétisme
- Portail de l’athlétisme
Источник: Ahmed Saleh
См. также в других словарях:
cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… … Universalium
Physics — (Greek: physis φύσις), in everyday terms, is the science of matter [R. P. Feynman, R. B. Leighton, M. Sands (1963), The Feynman Lectures on Physics , ISBN 0 201 02116 1 Hard cover. p.1 1 Feynman begins with the atomic hypothesis.] and its motion … Wikipedia
Orders of magnitude (energy) — Different orders of magnitude of natural energy production for solar, wind and geothermal versus average global consumption rate (1 W = 1 J/s) This list compares various energies in joules (J), organized by order of magnitude. List of orders of… … Wikipedia
Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… … Universalium
Energetic neutral atom — ENAs redirects here. For other uses, see Enas (disambiguation). Neutral Atom Imaging redirects here. For other uses, see Atom (disambiguation). ENA images of the fluctuation of Earth s ring current during July 15–16, 2000 geomagnetic storm made… … Wikipedia
Neutron star — redirects here. For the story by Larry Niven, see Neutron Star (short story). Neutron stars crush half a million times more mass than Earth into a sphere no larger than Manhattan. A neutron star is a type of stellar remnant that can result from… … Wikipedia
