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Roussos E, Cohen C, Kollmann P, Pinto M, Krupp N, Gonçalves P, Dialynas K. A source of very energetic oxygen located in Jupiter's inner radiation belts. SCIENCE ADVANCES 2022; 8:eabm4234. [PMID: 35020420 PMCID: PMC8754300 DOI: 10.1126/sciadv.abm4234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 11/19/2021] [Indexed: 06/14/2023]
Abstract
Jupiter hosts the most hazardous radiation belts of our solar system that, besides electrons and protons, trap an undetermined mix of heavy ions. The details of this mix are critical to resolve because they can reveal the role of Jupiter’s moons relative to other less explored energetic ion sources. Here, we show that with increasing energy and in the vicinity of Jupiter’s moon Amalthea, the belts’ ion composition transitions from sulfur- to oxygen-dominated due to a local source of ≳50 MeV/nucleon oxygen. Contrary to Earth’s and Saturn’s radiation belts, where their most energetic ions are supplied through atmospheric and ring interactions with externally accelerated cosmic rays, Jupiter’s magnetosphere powers this oxygen source internally. The underlying source mechanism, involving either Jovian ring spallation by magnetospheric sulfur or stochastic oxygen heating by low-frequency plasma waves, puts Jupiter’s ion radiation belt in the same league with that of astrophysical particle accelerators.
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Affiliation(s)
- Elias Roussos
- Max Planck Institute for Solar System Research, Goettingen, Germany
| | - Christina Cohen
- Space Radiation Lab, California Institute of Technology, Pasadena, CA, USA
| | - Peter Kollmann
- Johns Hopkins Applied Physics Laboratory, Laurel, MD, USA
| | - Marco Pinto
- Laboratory of Instrumentation and Experimental Particle Physics, Lisbon, Portugal
| | - Norbert Krupp
- Max Planck Institute for Solar System Research, Goettingen, Germany
| | - Patricia Gonçalves
- Laboratory of Instrumentation and Experimental Particle Physics, Lisbon, Portugal
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Verbiscer AJ. A new moon for Neptune. Nature 2019; 566:328-329. [DOI: 10.1038/d41586-019-00576-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Burns JA. Ring in the new. Nature 2014; 508:48-9. [DOI: 10.1038/nature13218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bennett CJ, Pirim C, Orlando TM. Space-Weathering of Solar System Bodies: A Laboratory Perspective. Chem Rev 2013; 113:9086-150. [DOI: 10.1021/cr400153k] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chris J. Bennett
- Department of Chemistry & Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332, United States
| | - Claire Pirim
- Department of Chemistry & Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332, United States
| | - Thomas M. Orlando
- Department of Chemistry & Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332, United States
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Denk T, Neukum G, Roatsch T, Porco CC, Burns JA, Galuba GG, Schmedemann N, Helfenstein P, Thomas PC, Wagner RJ, West RA. Iapetus: Unique Surface Properties and a Global Color Dichotomy from Cassini Imaging. Science 2010; 327:435-9. [DOI: 10.1126/science.1177088] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Tilmann Denk
- Institut für Geologische Wissenschaften, Freie Universität Berlin, 12249 Berlin, Germany
| | - Gerhard Neukum
- Institut für Geologische Wissenschaften, Freie Universität Berlin, 12249 Berlin, Germany
| | - Thomas Roatsch
- Institut für Planetenforschung, Deutsches Zentrum für Luft- und Raumfahrt (DLR), Rutherfordstraße 2, 12489 Berlin, Germany
| | - Carolyn C. Porco
- Cassini Imaging Central Laboratory for Operations (CICLOPS), Space Science Institute, 4750 Walnut Street, Suite 205, Boulder, CO 80301, USA
| | - Joseph A. Burns
- Department of Astronomy, Cornell University, Space Sciences Building, Ithaca, NY 14853, USA
| | - Götz G. Galuba
- Institut für Geologische Wissenschaften, Freie Universität Berlin, 12249 Berlin, Germany
| | - Nico Schmedemann
- Institut für Geologische Wissenschaften, Freie Universität Berlin, 12249 Berlin, Germany
| | - Paul Helfenstein
- Department of Astronomy, Cornell University, Space Sciences Building, Ithaca, NY 14853, USA
| | - Peter C. Thomas
- Department of Astronomy, Cornell University, Space Sciences Building, Ithaca, NY 14853, USA
| | - Roland J. Wagner
- Institut für Planetenforschung, Deutsches Zentrum für Luft- und Raumfahrt (DLR), Rutherfordstraße 2, 12489 Berlin, Germany
| | - Robert A. West
- Jet Propulsion Laboratory (JPL), California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
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Verbiscer AJ, Skrutskie MF, Hamilton DP. Saturn's largest ring. Nature 2009; 461:1098-100. [DOI: 10.1038/nature08515] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2009] [Accepted: 09/18/2009] [Indexed: 11/09/2022]
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Tiscareno MS, Hedman MM. Saturn's colossal ring. Nature 2009; 461:1064-5. [DOI: 10.1038/4611064a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hamilton DP, Krüger H. The sculpting of Jupiter’s gossamer rings by its shadow. Nature 2008; 453:72-5. [PMID: 18451856 DOI: 10.1038/nature06886] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2007] [Accepted: 02/28/2008] [Indexed: 11/10/2022]
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Krivov AV. A tenuous dust ring of Jupiter formed by escaping ejecta from the Galilean satellites. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/2000je001434] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Sickafoose AA, Colwell JE, Horányi M, Robertson S. Experimental investigations on photoelectric and triboelectric charging of dust. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2000ja000364] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Burns JA, Hamilton DP, Showalter MR. Dusty Rings and Circumplanetary Dust: Observations and Simple Physics. ASTRONOMY AND ASTROPHYSICS LIBRARY 2001. [DOI: 10.1007/978-3-642-56428-4_13] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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