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@Article{HessEchZarLamDel:2014:MuStJo,
               author = "Hess, S. L. G. and Echer, Ezequiel and Zarka, P. and Lamy, L. and 
                         Delamere, P. A.",
          affiliation = "LESIA, Observatoire de Paris, Universit{\'e} Paris Diderot and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and LESIA, 
                         Observatoire de Paris, Universit{\'e} Paris Diderot and LESIA, 
                         Observatoire de Paris, Universit{\'e} Paris Diderot and 
                         {University of Alaska}",
                title = "Multi-instrument study of the Jovian radio emissions triggered by 
                         solar wind shocks and inferred magnetospheric subcorotation 
                         rates",
              journal = "Planetary and Space Science",
                 year = "2014",
               volume = "99",
                pages = "136--148",
             keywords = "Magnetosphere, Radio astronomy, Solar wind, Spacecraft, Storms, 
                         Jovian radio arcs, Jupiter-Io interaction, Magnetospheric 
                         dynamics, Shocks, Subcorotation, Interplanetary flight.",
             abstract = "The influence of solar wind conditions on the Jovian auroral radio 
                         emissions has long been debated, mostly because it has always been 
                         difficult to get accurate solar wind and radio observations at the 
                         same time. We present here a study of Jupiter's radio emissions 
                         compared to solar wind conditions using radio (RPWS) and magnetic 
                         (MAG) data from the Cassini spacecraft from October to December 
                         2000, just before its flyby of Jupiter. The spacecraft was then in 
                         the solar wind and could record both the radio emissions coming 
                         from the Jovian magnetosphere and the solar wind magnetic field 
                         (IMF). With these data, we found a good correspondence between the 
                         arrival of interplanetary shocks at Jupiter and the occurrence of 
                         radio storms. Our results confirm those from the previous studies 
                         showing that fast forward shocks (FFS) trigger mostly dusk 
                         emissions, whereas fast reverse shocks (FRS) trigger both dawn and 
                         dusk emissions. FFS-triggered emissions are found to occur 10-30 h 
                         after the shock arrival when the IMF is weak (below 2 nT), and 
                         quasi-immediately after shock arrival when the IMF is strong 
                         (above 2 nT). FRS-triggered emissions are found to occur 
                         quasi-immediately even when the IMF is weak. We show and discuss 
                         in depth the characteristic morphologies of the radio emissions 
                         related to each type of shock and their implications. We also used 
                         simultaneous radio observations from the ground-based 
                         Nan{\c{c}}ay decameter array and from the Galileo radio 
                         instrument (PWS). From the comparison of these measurements with 
                         Cassini's, we deduce the regions where the radio storms occur, as 
                         well as the radio source subcorotation rates. We show that 
                         FFS-triggered emissions onset happens in a sector of local time 
                         centered around 15:00 LT, and that all the shock-triggered radio 
                         sources sub-corotate with a subcorotation rate of ~50% when the 
                         IMF is below 2 nT and of ~80% when it is above 2 nT. These rates 
                         could correspond to the extended and compressed states of the 
                         Jovian magnetosphere.  2014 Elsevier Ltd. All rights reserved.",
                  doi = "10.1016/j.pss.2014.05.015",
                  url = "http://dx.doi.org/10.1016/j.pss.2014.05.015",
                 issn = "0032-0633",
                label = "scopus 2014-11 HessEchZarLamDel:2014:MuStJo",
             language = "en",
           targetfile = "Hess_Multiinstrument.pdf",
        urlaccessdate = "17 jan. 2021"
}


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