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Collection:
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NASA Cassini-Huygens Collection
Collection
NASA Cassini-Huygens Collection
Collection
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Title:
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Saturn's Radio Rotation
Title
Saturn's Radio Rotation
Title
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Description:
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Radio waves produced near the poles of Saturn have been monitored by Cassini's Radio and Plasma Wave Science instrument (RPWS) since 2003.
description
Radio waves produced near the poles of Saturn have been monitored by Cassini's Radio and Plasma Wave Science instrument (RPWS) since 2003.
Description
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Full Description:
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Radio waves produced near the poles of Saturn have been monitored by Cassini's Radio and Plasma Wave Science instrument (RPWS) since 2003. A team of European scientists have analysed several years of Cassini RPWS data to study the variations of Saturn's radio clock, or its large fluctuations, at a 1-2 percent level, over weeks to months. They have found that the variation in the solar wind speed near Saturn is probably responsible for the poor stability of the planet's radio clock. interestingly, the solar wind speed does not vary randomly, but instead, follows a saw-tooth pattern, first building up in speed and then suddenly slowing down, and causing thus apparent rotation period fluctuations.
Credits: Inset - NASA/ESA/JPL/Univers ity of Iowa/ Obs. de Paris Lesia (P. Zarka), Background - Magnetosphere: NASA, the Sun: ESA/NASA SOHO
Full_Description
Radio waves produced near the poles of Saturn have been monitored by Cassini's Radio and Plasma Wave Science instrument (RPWS) since 2003. A team of European scientists have analysed several years of Cassini RPWS data to study the variations of Saturn's radio clock, or its large fluctuations, at a 1-2 percent level, over weeks to months. They have found that the variation in the solar wind speed near Saturn is probably responsible for the poor stability of the planet's radio clock. interestingly, the solar wind speed does not vary randomly, but instead, follows a saw-tooth pattern, first building up in speed and then suddenly slowing down, and causing thus apparent rotation period fluctuations.
Credits: Inset - NASA/ESA/JPL/Univers ity of Iowa/ Obs. de Paris Lesia (P. Zarka), Background - Magnetosphere: NASA, the Sun: ESA/NASA SOHO
Full Description
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Date:
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December 12, 2007
Date
December 12, 2007
Date
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Keywords:
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plasma
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Keywords:
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radio waves
keywords
radio waves
Keywords
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Keywords:
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RPWS
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facet_what:
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Saturn
facet_what
Saturn
facet_what
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facet_what:
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Cassini
facet_what
Cassini
facet_what
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facet_what:
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Sun
facet_what
Sun
facet_what
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facet_what:
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Radio and Plasma Wave Science Instrument
facet_what
Radio and Plasma Wave Science Instrument
facet_what
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facet_what:
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SOHO
facet_what
SOHO
facet_what
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facet_where:
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Saturn
facet_where
Saturn
facet_where
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facet_where:
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Iowa
facet_where
Iowa
facet_where
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facet_where:
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Paris
facet_where
Paris
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
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facet_when:
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December 12, 2007
facet_when
December 12, 2007
facet_when
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facet_when_year:
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2007
facet_when_year
2007
facet_when_year
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UID:
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SPD-SATRN-2885
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original url:
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original_url
original url
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