Micron-sized particles detected near Saturn by the Voyager plasma wave instrument

Gurnett, D. A.; Grün, E.; Gallagher, D. L.; Kurth, W. S.; Scarf, F. L.

doi:10.1016/0019-1035(83)90145-8

Cited by 214 publications

(187 citation statements)

References 14 publications

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“…Power-law density decreases with size, as in (20), are typical for different space plasma environments. Distributions of this sort have been observed in planetary ring plasmas, with powerlaw indices β = 4.6 for the F ring of Saturn (Showalter et al 1992) and β = 6 (Showalter & Cuzzi 1993), or β = 7 (Gurnett et al 1983) for the G ring. The Voyager observations that have yielded these power-law indices and related information about planetary dust in the rings of the Jovian planets are more than two decades old.…”

Section: Dust Size Distributionsmentioning

confidence: 91%

“…While many dusty plasma experiments have used manufactured monodisperse grains, charged (and neutral) grains in space and astrophysical situations come in a whole range of sizes and compositions, hence also masses and charges. Moreover, in situ observations of planetary environments by space missions have often shown that dust distributions are characterized by power-law decays of dust densities with size (Gurnett et al 1983;Showalter et al 1992;Showalter & Cuzzi 1993;Kempf et al 2006;Kurth et al 2006;Kempf et al 2008;Yaroshenko et al 2009). …”

Section: Introductionmentioning

confidence: 99%

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Nonlinear electrostatic modes in astrophysical plasmas with charged dust distributions

Verheest

Yaroshenko

2009

A&A

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Context. Most theoretical investigations of wave phenomena in dusty plasmas have treated charged dust as additional heavy negative ions in standard multispecies models. Many dusty plasma experiments use monodisperse grains, but charged (and neutral) grains in space environments come in a whole range of sizes and compositions, hence in masses and charges. Dust density distributions having a power-law decay with size are often observed in planetary rings. Aims. There is a need to investigate larger solitary structures, since wave descriptions involving charged dust distributions have usually been limited to linear or weakly nonlinear modes. Methods. Sagdeev pseudopotential methods describe large-amplitude solitary waves in a co-moving reference frame and are adapted to include dust distributions, using mass and charge, or alternatively size, as additional variables. Observed power-law distributions lead to descriptions involving hypergeometric functions. Results. Lower limits for possible solitary wave velocities follow from requiring that the Sagdeev pseudopotentials have a local maximum for the undisturbed conditions, whereas upper limits come from ensuring that dust densities remain real. Nonlinear amplitudes increase with solitary wave velocities and relative electron temperature. Under similar plasma conditions, dust size distributions admit slower solitary wave solutions, with correspondingly smaller amplitudes than given by monodisperse dust models. For typical planetary ring conditions, the difference can be quite appreciable.

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Section: Dust Size Distributionsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Nonlinear electrostatic modes in astrophysical plasmas with charged dust distributions

Verheest

Yaroshenko

2009

A&A

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“…Such a detection was made serendipitously for the first time on the spacecraft Voyager 1 in Saturn's E ring (Aubier et al 1983;Gurnett et al 1983), and was later used in various environments of the heliosphere (see Meyer-Vernet 2001 and references therein).…”

Section: Dust Detection With Plasma Experimentsmentioning

confidence: 99%

“…The corresponding spectral density is shown on Fig. 14, as recorded with the radio (denoted as PRA; Aubier et al 1983; Meyer-Vernet et al 1998) and plasma wave (denoted as PWS; Gurnett et al 1983;Tsintikidis et al 1994) instruments on Voyager 2. When the antenna is operated as a dipole, the receiver records the difference of potential between the two antenna arms.…”

Section: Dust Detection With Plasma Experimentsmentioning

confidence: 99%

Dusty Plasma Effects in Near Earth Space and Interplanetary Medium

et al. 2011

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Dusty plasma effects in near earth space and interplanetary mediumSpace Science Reviews, 2011, Vol. 161, Issue 1-4: 1-47 10.1007/s11214-011-9762-3Access to the published version may require subscription. Published with permission from:Springer Science+Business Media B.V.Space Science Reviews manuscript No. (will be inserted by the editor) Dusty plasma effects in near Earth space and interplanetary mediumReceived: date / Accepted: date Abstract We review dust and meteoroid fluxes and their dusty plasma effects in the interplanetary medium near Earth orbit and in the Earth's ionosphere. Aside from in-situ measurements from sounding rockets and spacecraft, experimental data cover radar and optical observations of meteors. Dust plasma interactions in the interplanetary medium are observed by the detection of charged dust particles, by the detection of dust that is accelerated in the solar wind and by the detection of ions and neutrals that are released from the dust. These interactions are not well understood and lack quantitative description. There is still a huge discrepancy in the estimates of meteoroid mass deposition into the atmosphere. The radar meteor observations are of particular interest for determining this number. Dust measurements from spacecraft require a better understanding of the dust impact ionization process, as well as of the dust charging processes. The latter are also important for further studying nano dust trajectories in the solar wind. Moreover understanding of the complex dependencies that cause the variation of nano dust fluxes is still a challenge.

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“…It is relevant in the event of either a higherthan-expected apocentre for the operational orbit or a significant delay in the apocentre-lowering orbit manoeuvre. In any case, high enough particle fluxes may be detectable through the process of impact ionization (Scarf et al 1982;Gurnett et al 1983) by the Neutral and Energetic Particle Analyzer (ASPERA-4).…”

Section: Expectations For Venus Expressmentioning

confidence: 99%

Encounters of the dust trails of comet 45P/Honda-Mrkos-Pajdusakova with Venus in 2006

Vaubaillon¹,

Christou²

2006

A&A

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Aims. We aim to investigate the dynamical fate of meteoroids ejected during past perihelion passages of comet 45P/Honda-Mrkos-Pajdusakova that intersect the orbit of Venus. Of particular interest is the possibility, borne of previous work, that a significant flux of these particles will reach the planet during early June and late August 2006, when the Venus Express spacecraft will be operating in orbit around Venus. Methods. We have simulated the generation of meteoroid trails ejected by the comet at some past perihelion passages, and numericaly integrated them forward in time until they approach Venus in 2006.

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Micron-sized particles detected near Saturn by the Voyager plasma wave instrument

Cited by 214 publications

References 14 publications

Nonlinear electrostatic modes in astrophysical plasmas with charged dust distributions

Nonlinear electrostatic modes in astrophysical plasmas with charged dust distributions

Dusty Plasma Effects in Near Earth Space and Interplanetary Medium

Encounters of the dust trails of comet 45P/Honda-Mrkos-Pajdusakova with Venus in 2006

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