Le phénomène de scintillation interplanétaire est un outil efficace pour étudier l'activité solaire. La technique implique l'observation de signaux radio provenant d'une source compacte éloignée se propageant à travers l'IPM. Ces ondes de la source radio se diffusent par des irrégularités de densité dans le plasma interplanétaire pour produire un motif d'intensité bidimensionnelle sur le sol. Le motif se déplace en raison de la vitesse relative du vent solaire et de la terre et est observé sous forme de scintillations d'intensité par un radiotélescope. L'étude de l'activité IPS est également d'une importance pratique, car l'activité solaire majeure entraîne souvent des perturbations géomagnétiques qui perturbent la communication radio et posent des risques de rayonnement pour les astronautes lors de missions spatiales. Pour ces raisons, il est important de comprendre l'activité interplanétaire à toutes les échelles possibles et d'étudier sa relation avec l'activité solaire et géomagnétique. Les observations IPS existantes, cependant, ont été plus adaptées pour étudier l'activité interplanétaire à longue échelle. Le radiotélescope de Rajkot utilisé pour les présentes enquêtes se compose d'un réseau d'antennes dipôles à onde complète, d'un récepteur de corrélation et de dispositifs d'enregistrement de données analogiques et numériques.
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Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The phenomenon of interplanetary scintillation is an effective tool to study the solar activity. The technique involves observation of radio signals from a distant compact source propagating through the IPM. These waves from the radio source are scattering by density irregularities in the interplanetary plasma to produce a two dimensional intensity pattern on the ground. The pattern moves because of the relative velocity of the solar wind and the earth and is observed as intensity scintillations by a radio telescope. The study of IPS activity is also of practical importance, as major solar activity often results in geomagnetic disturbances which disrupt radio communication and pose radiation hazards to astronauts on space missions. For these reasons it is important to understand interplanetary activity over all possible scales and study its relation to the solar and geomagnetic activity. The existing IPS observations, however, have been more suited to study long time scale interplanetary activity. The radio telescope at Rajkot used for the present investigations consists of a full wave dipole antenna array, correlation receiver, and analogue and digital data recording devices. 60 pp. Englisch. N° de réf. du vendeur 9783639713633
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Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Trivedi Rupal KartikAssistant Professor, M.P.Shah Arts and Science College, Surendranagar, Gujarat, INDIA.The phenomenon of interplanetary scintillation is an effective tool to study the solar activity. The technique involves obs. N° de réf. du vendeur 513868807
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Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -The phenomenon of interplanetary scintillation is an effective tool to study the solar activity. The technique involves observation of radio signals from a distant compact source propagating through the IPM. These waves from the radio source are scattering by density irregularities in the interplanetary plasma to produce a two dimensional intensity pattern on the ground. The pattern moves because of the relative velocity of the solar wind and the earth and is observed as intensity scintillations by a radio telescope. The study of IPS activity is also of practical importance, as major solar activity often results in geomagnetic disturbances which disrupt radio communication and pose radiation hazards to astronauts on space missions. For these reasons it is important to understand interplanetary activity over all possible scales and study its relation to the solar and geomagnetic activity. The existing IPS observations, however, have been more suited to study long time scale interplanetary activity. The radio telescope at Rajkot used for the present investigations consists of a full wave dipole antenna array, correlation receiver, and analogue and digital data recording devices.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 60 pp. Englisch. N° de réf. du vendeur 9783639713633
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Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The phenomenon of interplanetary scintillation is an effective tool to study the solar activity. The technique involves observation of radio signals from a distant compact source propagating through the IPM. These waves from the radio source are scattering by density irregularities in the interplanetary plasma to produce a two dimensional intensity pattern on the ground. The pattern moves because of the relative velocity of the solar wind and the earth and is observed as intensity scintillations by a radio telescope. The study of IPS activity is also of practical importance, as major solar activity often results in geomagnetic disturbances which disrupt radio communication and pose radiation hazards to astronauts on space missions. For these reasons it is important to understand interplanetary activity over all possible scales and study its relation to the solar and geomagnetic activity. The existing IPS observations, however, have been more suited to study long time scale interplanetary activity. The radio telescope at Rajkot used for the present investigations consists of a full wave dipole antenna array, correlation receiver, and analogue and digital data recording devices. N° de réf. du vendeur 9783639713633
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