Jupiter’s Lighting: New Perspectives from Juno’s Stellar Reference Unit

0508360 - ÚFA 2020 SG eng A - Abstrakt
Becker, H. - Brennan, N. - Alexander, J. - Guillaume, A. - Brown, S. - Ingersoll, A. - Hansen, C. - Imai, M. - Kolmašová, Ivana - Kurth, W. - Janssen, M. - Levin, S. - Connerney, J.
Jupiter’s Lighting: New Perspectives from Juno’s Stellar Reference Unit.
Abstracts of AOGS : 16th Annual Meeting. Singapore: Asia Oceania Geosciences Society, 2019. PS07-D2-AM1-311-001.
[AOGS Annual Meeting /16./. 28.07.2019-02.08.2019, Singapore]
Institucionální podpora: RVO:68378289
Klíčová slova: Jupiter * lightning * Juno spacecraft
Obor OECD: Astronomy (including astrophysics,space science)
http://www.asiaoceania.org/aogs2019/public.asp?page=browse_abstract.htm

Jupiter’s lightning has been observed by visible wavelength science imagers on multiple spacecraft from Voyager 1 to New Horizons. The Stellar Reference Unit (SRU) onboard the spinning Juno spacecraft is a visible wavelength engineering camera designed to image stars in support of spacecraft attitude determination. Juno’s Radiation Monitoring (RM) Investigation also utilizes the SRU as a high energy particle detector for characterizing Jupiter’s severe radiation environment. Since Juno’s tenth science orbit on 7 February 2018 the 53-day orbit geometry has allowed RM to extend the scientific range of the SRU and collect images of the dark side of Jupiter. Juno’s close flybys of the planet combined with the SRU’s low light sensitivity, wide field of view, and motion compensation capabilities have enabled unique optical observations of Jupiter’s lightning from as close as ~50,000 km from the cloud tops. The observations give new insight into flash energy, duration, and flash rate. We present an overview of our findings to date, including discussion of collocated and/or coincident storm observations by Juno’s Microwave Radiometer, JunoCam, and Waves instruments.
Trvalý link: http://hdl.handle.net/11104/0299289