Ground-based and spacecraft observations of lightning activity on Saturn

Autor: A. A. Konovalenko, Rodolphe Weber, Georg Fischer, V. Nikolaenko, C. Mylostna, Jean Schneider, Valery V. Shevchenko, Vladimir B. Ryabov, Philippe Zarka, Dmytro M. Vavriv, V. V. Vinogradov, B. Ryabov, L. Pallier, R. V. Kozhyn, G. Litvinenko, Jean-Mathias Grießmeier, C. Fabrice, M. A. Sidorchuk, D. V. Mukha, Baptiste Cecconi, A. Coffre, Loïc Denis, V. V. Zakharenko, Helmut O. Rucker
Přispěvatelé: Institute of Radio Astronomy of NASU [Kharkiv] (IRA), National Academy of Sciences of Ukraine (NASU), Unité Scientifique de la Station de Nançay (USN), Université d'Orléans (UO)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Space Research Institute of Austrian Academy of Sciences (IWF), Austrian Academy of Sciences (OeAW), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Future University-Hakodate, Laboratoire Univers et Théories (LUTH (UMR_8102)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique (PRISME), Université d'Orléans (UO)-Ecole Nationale Supérieure d'Ingénieurs de Bourges (ENSI Bourges), ANR-05-BLAN-0018,RADIO-EXOPLA(2005)
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: Planetary and Space Science
Planetary and Space Science, Elsevier, 2012, 61 (1), pp.53-59. ⟨10.1016/j.pss.2011.07.021⟩
ISSN: 0032-0633
DOI: 10.1016/j.pss.2011.07.021⟩
Popis: International audience; In late 2007, Saturn electrostatic discharges (SED) were simultaneously observed at the radio telescope UTR-2 and with the Cassini spacecraft. Observations at UTR-2 were performed with a multichannel receiver in the frequency range 12-33MHz, and those performed on Cassini-with a swept frequency receiver that is part of the RPWS (Radio and Plasma Wave Science) instrument in the frequency band 1.8-16MHz. We got a very good coincidence between data of UTR-2 and Cassini. It is shown for the first time that ground-based radio astronomy lets us detect Saturn's lightning with a high degree of reliability despite terrestrial interferences. This is the necessary basis for further detailed study of the temporal and spectral characteristics of the SEDs with ground based radio telescopes. Based on six observation sessions, several parameters of SEDs were determined, in particularly a correlation of 0.77 ± 0.15 between the average intensity of storms and the e-folding time. [All rights reserved Elsevier].
Databáze: OpenAIRE
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