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Poster (Scientific congresses and symposiums)
Systematic capture of MeV electron beams by MWR
Santos-Costa, Daniel; Bellotti, Amadeo; Janssen, Mike et al.
2017American Geophysical Union Fall Meeting 2017
 

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Keywords :
Jupiter; Juno; MWR; aurora
Abstract :
[en] Every ~ 53 days since August 2016, Juno swings by Jupiter and as the spacecraft spins along a polar orbit, measurements of Jupiter's microwave radiation are carried out at high data rates for several hours (~ 9 hours) with the Juno Microwave Radiometer (MWR). Within ~ 6 planetary radii (Rj) and from inside/outside the magnetospheric region, the thermal and synchrotron emissions are measured at high temporal and spatial resolutions. In this paper, we present a synthesis of the spatial distributions of the microwave radiation and discuss the similarities and differences observed at six wavelengths (1.3-50 cm). In addition to the thermal emission and synchrotron radiation from Jupiter's electron belt, unexpected signatures in MWR are either systematically or sporadically reported during perijove 1 (PJ1) and PJ3-PJ6. The preliminary results of a multi-instrument analysis of radio (MWR), extreme and far-ultraviolet auroral emissions (Juno UVS), field (Juno magnetometer), keV electrons (JEDI), and background radiation signatures in Juno's ASC and SRU instruments suggest that some of these signatures are consistent with the capture by MWR of synchrotron emission radiated by MeV electron beams, which may be associated with auroral activity. We subsequently describe in detail our data analysis and effort to model the synchrotron radiation from MeV electron beams to support our findings.
Research center :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Santos-Costa, Daniel
Bellotti, Amadeo
Janssen, Mike
Gulkis, Samuel
Ingersoll, Andrew P.
Levin, Steven
Steffes, Paul G
Brown, Shannon T
Adumitroaie, Virgil
Oyafuso, Fabiano A
Clark, George B
Mauk, Barry
Becker, Heidi N
Jørgensen, John L
Adriani, Alberto
Connerney, John E P
Gladstone, Randy
Hue, Vincent
Grodent, Denis  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Bonfond, Bertrand  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Ebert, Robert W
Valek, Philip W
Bolton, Scott J
Thorne, Richard M
More authors (14 more) Less
Language :
English
Title :
Systematic capture of MeV electron beams by MWR
Publication date :
13 December 2017
Event name :
American Geophysical Union Fall Meeting 2017
Event organizer :
AGU
Event place :
New-Orleans, United States - Louisiana
Event date :
du 12 décembre 2017 au 15 décembre 2017
Audience :
International
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
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since 22 December 2017

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