Imaging the Interaction of the Heliosphere with the Interstellar Medium from Saturn with Cassini

Imaging the Interaction of the Heliosphere with the Interstellar Medium from Saturn with Cassini

We report an all-sky image of energetic neutral atoms (ENAs) >6 kilo-electron volts produced by energetic protons occupying the region (heliosheath) between the boundary of the extended solar atmosphere and the local interstellar medium (LISM). The map obtained by the Ion and Neutral Camera (INCA...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 2009-11, Vol.326 (5955), p.971-973
Hauptverfasser: Krimigis, S.M, Mitchell, D.G, Roelof, E.C, Hsieh, K.C, McComas, D.J
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Sprache:eng
Schlagworte:
Astronomy
Astrophysics
Characteristics and properties of the milky way
Earth, ocean, space
Exact sciences and technology
Heliopause
Heliosheath
Heliosphere
Incan culture
Interplanetary space
Ions
Magnetic fields
Protons
Saturn
Solar neighborhood
Solar system
Solar wind
Solar wind plasma
Stellar systems. Galactic and extragalactic objects and systems. The universe
Sun
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container_end_page 973
container_issue 5955
container_start_page 971
container_title Science (American Association for the Advancement of Science)
container_volume 326
creator Krimigis, S.M
Mitchell, D.G
Roelof, E.C
Hsieh, K.C
McComas, D.J
description We report an all-sky image of energetic neutral atoms (ENAs) >6 kilo-electron volts produced by energetic protons occupying the region (heliosheath) between the boundary of the extended solar atmosphere and the local interstellar medium (LISM). The map obtained by the Ion and Neutral Camera (INCA) onboard Cassini reveals a broad belt of energetic protons whose nonthermal pressure is comparable to that of the local interstellar magnetic field. The belt, centered at approximately 260° ecliptic longitude extending from north to south and looping back through approximately 80°, appears to be ordered by the local interstellar magnetic field. The shape revealed by the ENA image does not conform to current models, wherein the heliosphere resembles a cometlike figure aligned in the direction of Sun's travel through the LISM.
doi_str_mv 10.1126/science.1181079
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source American Association for the Advancement of Science; Jstor Complete Legacy
subjects Astronomy
Astrophysics
Characteristics and properties of the milky way
Earth, ocean, space
Exact sciences and technology
Heliopause
Heliosheath
Heliosphere
Incan culture
Interplanetary space
Ions
Magnetic fields
Protons
Saturn
Solar neighborhood
Solar system
Solar wind
Solar wind plasma
Stellar systems. Galactic and extragalactic objects and systems. The universe
Sun
title Imaging the Interaction of the Heliosphere with the Interstellar Medium from Saturn with Cassini
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