1
|
Mostafavi P, Burlaga LF, Cairns IH, Fuselier SA, Fraternale F, Gurnett DA, Kim TK, Kurth WS, Pogorelov NV, Provornikova E, Richardson JD, Turner DL, Zank GP. Shocks in the Very Local Interstellar Medium. Space Sci Rev 2022; 218:27. [PMID: 35574274 PMCID: PMC9085707 DOI: 10.1007/s11214-022-00893-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 04/15/2022] [Indexed: 05/08/2023]
Abstract
Large-scale disturbances generated by the Sun's dynamics first propagate through the heliosphere, influence the heliosphere's outer boundaries, and then traverse and modify the very local interstellar medium (VLISM). The existence of shocks in the VLISM was initially suggested by Voyager observations of the 2-3 kHz radio emissions in the heliosphere. A couple of decades later, both Voyagers crossed the definitive edge of our heliosphere and became the first ever spacecraft to sample interstellar space. Since Voyager 1's entrance into the VLISM, it sampled electron plasma oscillation events that indirectly measure the medium's density, increasing as it moves further away from the heliopause. Some of the observed electron oscillation events in the VLISM were associated with the local heliospheric shock waves. The observed VLISM shocks were very different than heliospheric shocks. They were very weak and broad, and the usual dissipation via wave-particle interactions could not explain their structure. Estimates of the dissipation associated with the collisionality show that collisions can determine the VLISM shock structure. According to theory and models, the existence of a bow shock or wave in front of our heliosphere is still an open question as there are no direct observations yet. This paper reviews the outstanding observations recently made by the Voyager 1 and 2 spacecraft, and our current understanding of the properties of shocks/waves in the VLISM. We present some of the most exciting open questions related to the VLISM and shock waves that should be addressed in the future.
Collapse
Affiliation(s)
- P. Mostafavi
- Johns Hopkins Applied Physics Laboratory, Laurel, MD 20723 USA
| | - L. F. Burlaga
- NASA Goddard Space Flight Center, Code 673, Greenbelt, MD 20771 USA
| | - I. H. Cairns
- School of Physics, University of Sydney, Sydney, NSW 2006 Australia
| | - S. A. Fuselier
- Southwest Research Institute, P.O. Drawer 28510, San Antonio, TX 78228 USA
- Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX 78249 USA
| | - F. Fraternale
- Center for Space Plasma and Aeronomic Research (CSPAR), University of Alabama in Huntsville, Huntsville, AL 35805 USA
| | - D. A. Gurnett
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242 USA
| | - T. K. Kim
- Center for Space Plasma and Aeronomic Research (CSPAR), University of Alabama in Huntsville, Huntsville, AL 35805 USA
| | - W. S. Kurth
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242 USA
| | - N. V. Pogorelov
- Center for Space Plasma and Aeronomic Research (CSPAR), University of Alabama in Huntsville, Huntsville, AL 35805 USA
- Department of Space Science, University of Alabama in Huntsville, Huntsville, AL 35805 USA
| | - E. Provornikova
- Johns Hopkins Applied Physics Laboratory, Laurel, MD 20723 USA
| | - J. D. Richardson
- Kavli Institute for Astrophysics and Space Research, Cambridge, MA USA
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA USA
| | - D. L. Turner
- Johns Hopkins Applied Physics Laboratory, Laurel, MD 20723 USA
| | - G. P. Zank
- Center for Space Plasma and Aeronomic Research (CSPAR), University of Alabama in Huntsville, Huntsville, AL 35805 USA
- Department of Space Science, University of Alabama in Huntsville, Huntsville, AL 35805 USA
| |
Collapse
|
2
|
Wahlund JE, Morooka MW, Hadid LZ, Persoon AM, Farrell WM, Gurnett DA, Hospodarsky G, Kurth WS, Ye SY, Andrews DJ, Edberg NJT, Eriksson AI, Vigren E. In situ measurements of Saturn's ionosphere show that it is dynamic and interacts with the rings. Science 2017; 359:66-68. [PMID: 29229651 DOI: 10.1126/science.aao4134] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 11/27/2017] [Indexed: 11/02/2022]
Abstract
The ionized upper layer of Saturn's atmosphere, its ionosphere, provides a closure of currents mediated by the magnetic field to other electrically charged regions (for example, rings) and hosts ion-molecule chemistry. In 2017, the Cassini spacecraft passed inside the planet's rings, allowing in situ measurements of the ionosphere. The Radio and Plasma Wave Science instrument detected a cold, dense, and dynamic ionosphere at Saturn that interacts with the rings. Plasma densities reached up to 1000 cubic centimeters, and electron temperatures were below 1160 kelvin near closest approach. The density varied between orbits by up to two orders of magnitude. Saturn's A- and B-rings cast a shadow on the planet that reduced ionization in the upper atmosphere, causing a north-south asymmetry.
Collapse
Affiliation(s)
- J-E Wahlund
- Swedish Institute of Space Physics, Box 537, SE-751 21 Uppsala, Sweden.
| | - M W Morooka
- Swedish Institute of Space Physics, Box 537, SE-751 21 Uppsala, Sweden
| | - L Z Hadid
- Swedish Institute of Space Physics, Box 537, SE-751 21 Uppsala, Sweden
| | - A M Persoon
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USA
| | - W M Farrell
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
| | - D A Gurnett
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USA
| | - G Hospodarsky
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USA
| | - W S Kurth
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USA
| | - S-Y Ye
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USA
| | - D J Andrews
- Swedish Institute of Space Physics, Box 537, SE-751 21 Uppsala, Sweden
| | - N J T Edberg
- Swedish Institute of Space Physics, Box 537, SE-751 21 Uppsala, Sweden
| | - A I Eriksson
- Swedish Institute of Space Physics, Box 537, SE-751 21 Uppsala, Sweden
| | - E Vigren
- Swedish Institute of Space Physics, Box 537, SE-751 21 Uppsala, Sweden
| |
Collapse
|
3
|
Farrell WM, Wahlund JE, Morooka M, Kurth WS, Gurnett DA, MacDowall RJ. Ion Trapping by Dust Grains: Simulation Applications to the Enceladus Plume. J Geophys Res Planets 2017; 122:729-743. [PMID: 32021741 PMCID: PMC6999740 DOI: 10.1002/2016je005235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Using a particle-in-cell electrostatic simulation, we examine the conditions that allow low energy ions, like those produced in the Enceladus plume, to be attracted and trapped within the sheaths of negatively-charged dust grains. The conventional wisdom is that all new ions produced in the Enceladus plume are free to get picked up (i.e., accelerated by the local E-field to then undergo vB acceleration). However, we suggest herein that the presence of submicron charged dust in the plume impedes this pickup process since the local grain electric field greatly exceeds the co-rotation E-fields. The simulations demonstrate that cold ions will tend to accelerate toward the negatively charged grains and become part of the ion plasma sheath. These trapped ions will move with the grains, exiting the plume region at the dust speed. We suggest that Cassini's Langmuir probe is measuring the entire ion population (free and trapped ions), while the Cassini magnetometer detects the magnetic perturbations associated with pickup currents from the smaller population of free ions, with this distinction possibly reconciling the ongoing debate in the literature on the ion density in the plume.
Collapse
Affiliation(s)
- W M Farrell
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - J-E Wahlund
- Swedish Institute of Space Physics, Uppsala, Sweden
| | - M Morooka
- Swedish Institute of Space Physics, Uppsala, Sweden
| | - W S Kurth
- University of Iowa, Iowa City, IA, USA
| | | | - R J MacDowall
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| |
Collapse
|
4
|
Andrews DJ, Barabash S, Edberg NJT, Gurnett DA, Hall BES, Holmström M, Lester M, Morgan DD, Opgenoorth HJ, Ramstad R, Sanchez-Cano B, Way M, Witasse O. Plasma observations during the Mars atmospheric "plume" event of March-April 2012. J Geophys Res Space Phys 2016; 121:3139-3154. [PMID: 29552437 PMCID: PMC5854877 DOI: 10.1002/2015ja022023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present initial analysis and conclusions from plasma observations made during the reported "Mars plume event" of March - April 2012. During this period, multiple independent amateur observers detected a localized, high-altitude "plume" over the Martian dawn terminator [Sanchez-Lavega et al., Nature, 2015, doi:10.1038/nature14162], the cause of which remains to be explained. The estimated brightness of the plume exceeds that expected for auroral emissions, and its projected altitude greatly exceeds that at which clouds are expected to form. We report on in-situ measurements of ionospheric plasma density and solar wind parameters throughout this interval made by Mars Express, obtained over the same surface region, but at the opposing terminator. Measurements in the ionosphere at the corresponding location frequently show a disturbed structure, though this is not atypical for such regions with intense crustal magnetic fields. We tentatively conclude that the formation and/or transport of this plume to the altitudes where it was observed could be due in part to the result of a large interplanetary coronal mass ejection (ICME) encountering the Martian system. Interestingly, we note that the only similar plume detection in May 1997 may also have been associated with a large ICME impact at Mars.
Collapse
Affiliation(s)
- D J Andrews
- Swedish Institute of Space Physics (Uppsala), Uppsala, Sweden
| | - S Barabash
- Swedish Institute of Space Physics (Kiruna), Kiruna, Sweden
| | - N J T Edberg
- Swedish Institute of Space Physics (Uppsala), Uppsala, Sweden
| | - D A Gurnett
- Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa, USA
| | - B E S Hall
- Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom
| | - M Holmström
- Swedish Institute of Space Physics (Kiruna), Kiruna, Sweden
| | - M Lester
- Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom
| | - D D Morgan
- Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa, USA
| | - H J Opgenoorth
- Swedish Institute of Space Physics (Uppsala), Uppsala, Sweden
| | - R Ramstad
- Swedish Institute of Space Physics (Kiruna), Kiruna, Sweden
| | - B Sanchez-Cano
- Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom
| | - M Way
- NASA Goddard Institute for Space Studies, 2880 Broadway, New York, New York, USA
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | | |
Collapse
|
5
|
Abstract
Launched over 35 years ago, Voyagers 1 and 2 are on an epic journey outward from the Sun to reach the boundary between the solar plasma and the much cooler interstellar medium. The boundary, called the heliopause, is expected to be marked by a large increase in plasma density, from about 0.002 per cubic centimeter (cm(-3)) in the outer heliosphere, to about 0.1 cm(-3) in the interstellar medium. On 9 April 2013, the Voyager 1 plasma wave instrument began detecting locally generated electron plasma oscillations at a frequency of about 2.6 kilohertz. This oscillation frequency corresponds to an electron density of about 0.08 cm(-3), very close to the value expected in the interstellar medium. These and other observations provide strong evidence that Voyager 1 has crossed the heliopause into the nearby interstellar plasma.
Collapse
Affiliation(s)
- D A Gurnett
- University of Iowa, Iowa City, IA 52242, USA.
| | | | | | | |
Collapse
|
6
|
|
7
|
|
8
|
O'Brien BJ, Laughlin CD, Gurnett DA. High-latitude geophysical studies with satellite Injun 3: 1. Description of the satellite. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jz069i001p00001] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
9
|
Gurnett DA, O'Brien BJ. High-latitude geophysical studies with satellite Injun 3: 5. Very-low-frequency electromagnetic radiation. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jz069i001p00065] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
10
|
Garnier P, Wahlund JE, Holmberg MKG, Morooka M, Grimald S, Eriksson A, Schippers P, Gurnett DA, Krimigis SM, Krupp N, Coates A, Crary F, Gustafsson G. The detection of energetic electrons with the Cassini Langmuir probe at Saturn. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2011ja017298] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
11
|
|
12
|
|
13
|
Gurnett DA, Maggs JE, Gallagher DL, Kurth WS, Scarf FL. Parametric interaction and spatial collapse of beam-driven Langmuir waves in the solar wind. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja086ia10p08833] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
14
|
|
15
|
|
16
|
|
17
|
Coroniti FV, Kurth WS, Scarf FL, Krimigis SM, Kennel CF, Gurnett DA. Whistler mode emissions in the Uranian radiation belts. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja092ia13p15234] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
18
|
|
19
|
|
20
|
|
21
|
|
22
|
Hoffman RA, Cahill LJ, Anderson RR, Maynard NC, Smith PH, Fritz TA, Williams DJ, Konradi A, Gurnett DA. Explorer 45 (S³-A) observations of the magnetosphere and magnetopause during the August 4-6, 1972, magnetic storm period. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja080i031p04287] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
23
|
|
24
|
|
25
|
|
26
|
Gurnett DA, Kurth WS, Scarf FL, Burns JA, Cuzzi JN, Grün E. Micron‐sized particle impacts detected near Uranus by the Voyager 2 Plasma Wave Instrument. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja092ia13p14959] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
27
|
|
28
|
Gurnett DA, Scarf FL, Kurth WS, Shaw RR, Poynter RL. Determination of Jupiter's electron density profile from plasma wave observations. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja086ia10p08199] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
29
|
Gurnett DA, Hospodarsky GB, Kurth WS, Williams DJ, Bolton SJ. Fine structure of Langmuir waves produced by a solar electron event. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/92ja02838] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
30
|
Anderson RR, Parks GK, Eastman TE, Gurnett DA, Frank LA. Plasma waves associated with energetic particles streaming into the solar wind from the Earth's bow shock. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja086ia06p04493] [Citation(s) in RCA: 179] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
31
|
|
32
|
Barbosa DD, Scarf FL, Kurth WS, Gurnett DA. Broadband electrostatic noise and field-aligned currents in Jupiter's middle magnetosphere. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja086ia10p08357] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
33
|
|
34
|
Weimer DR, Goertz CK, Gurnett DA, Maynard NC, Burch JL. Auroral zone electric fields from DE 1 and 2 at magnetic conjunctions. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja090ia08p07479] [Citation(s) in RCA: 169] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
35
|
|
36
|
|
37
|
|
38
|
Thomsen MF, Roussos E, Andriopoulou M, Kollmann P, Arridge CS, Paranicas CP, Gurnett DA, Powell RL, Tokar RL, Young DT. Saturn's inner magnetospheric convection pattern: Further evidence. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2011ja017482] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
39
|
Schippers P, André N, Gurnett DA, Lewis GR, Persoon AM, Coates AJ. Identification of electron field-aligned current systems in Saturn's magnetosphere. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2011ja017352] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
40
|
Affiliation(s)
- J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - R. L. Mutel
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - P. Schippers
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - S.-Y. Ye
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - L. Lamy
- LESIA, Observatoire de Paris; Université Paris Diderot, UPMC, CNRS; Meudon France
| |
Collapse
|
41
|
Morooka MW, Wahlund JE, Eriksson AI, Farrell WM, Gurnett DA, Kurth WS, Persoon AM, Shafiq M, André M, Holmberg MKG. Dusty plasma in the vicinity of Enceladus. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011ja017038] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
42
|
Němec F, Morgan DD, Gurnett DA, Duru F, Truhlík V. Dayside ionosphere of Mars: Empirical model based on data from the MARSIS instrument. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010je003789] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
43
|
Fischer G, Kurth WS, Gurnett DA, Zarka P, Dyudina UA, Ingersoll AP, Ewald SP, Porco CC, Wesley A, Go C, Delcroix M. A giant thunderstorm on Saturn. Nature 2011; 475:75-7. [DOI: 10.1038/nature10205] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Accepted: 05/17/2011] [Indexed: 11/09/2022]
|
44
|
Schippers P, Arridge CS, Menietti JD, Gurnett DA, Lamy L, Cecconi B, Mitchell DG, André N, Kurth WS, Grimald S, Dougherty MK, Coates AJ, Krupp N, Young DT. Auroral electron distributions within and close to the Saturn kilometric radiation source region. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011ja016461] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- P. Schippers
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - C. S. Arridge
- Mullard Space Science Laboratory; University College London; Holmbury St. Mary UK
- Centre for Planetary Sciences at UCL/Birkbeck; London WC1E 6BT UK
| | - J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - L. Lamy
- Department of Space and Atmospheric Physics; Imperial College; London UK
- LESIA, CNRS; Observatoire de Meudon; Meudon France
| | - B. Cecconi
- LESIA, CNRS; Observatoire de Meudon; Meudon France
| | - D. G. Mitchell
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - N. André
- Centre d'Étude Spatiale des Rayonnements; Université de Toulouse, UPS; Toulouse France
- CNRS UMR 5187; Toulouse France
| | - W. S. Kurth
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - S. Grimald
- Centre d'Étude Spatiale des Rayonnements; Université de Toulouse, UPS; Toulouse France
- CNRS UMR 5187; Toulouse France
| | - M. K. Dougherty
- Department of Space and Atmospheric Physics; Imperial College; London UK
| | - A. J. Coates
- Mullard Space Science Laboratory; University College London; Holmbury St. Mary UK
- Centre for Planetary Sciences at UCL/Birkbeck; London WC1E 6BT UK
| | - N. Krupp
- Max-Planck-Institut fur Sonnensystemforschung; Katlenburg-Lindau Germany
| | - D. T. Young
- Southwest Research Institute; San Antonio Texas USA
| |
Collapse
|
45
|
Fischer G, Gurnett DA, Zarka P, Moore L, Dyudina UA. Peak electron densities in Saturn's ionosphere derived from the low-frequency cutoff of Saturn lightning. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010ja016187] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- G. Fischer
- Space Research Institute; Austrian Academy of Sciences; Graz Austria
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - P. Zarka
- Observatoire de Paris; Meudon France
| | - L. Moore
- Center for Space Physics; Boston University; Boston Massachusetts USA
| | - U. A. Dyudina
- Geological and Planetary Sciences; California Institute of Technology; Pasadena California USA
| |
Collapse
|
46
|
Lamy L, Cecconi B, Zarka P, Canu P, Schippers P, Kurth WS, Mutel RL, Gurnett DA, Menietti D, Louarn P. Emission and propagation of Saturn kilometric radiation: Magnetoionic modes, beaming pattern, and polarization state. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010ja016195] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- L. Lamy
- Laboratoire d'Etudes et d'Instrumentation en Astrophysique, Observatoire de Paris; CNRS; Meudon France
- Space and Atmospheric Physics, Blackett Laboratory; Imperial College London; London UK
| | - B. Cecconi
- Laboratoire d'Etudes et d'Instrumentation en Astrophysique, Observatoire de Paris; CNRS; Meudon France
| | - P. Zarka
- Laboratoire d'Etudes et d'Instrumentation en Astrophysique, Observatoire de Paris; CNRS; Meudon France
| | - P. Canu
- Laboratoire de Physique des Plasmas; Palaiseau France
| | - P. Schippers
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - W. S. Kurth
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - R. L. Mutel
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - P. Louarn
- Centre d'Etude Spatiale des Rayonnements, Université Paul Sabatier; CNRS; Toulouse France
| |
Collapse
|
47
|
Affiliation(s)
- S.-Y. Ye
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - J. B. Groene
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - Z. Wang
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - W. S. Kurth
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| |
Collapse
|
48
|
Ye SY, Menietti JD, Fischer G, Wang Z, Cecconi B, Gurnett DA, Kurth WS. Z mode waves as the source of Saturn narrowband radio emissions. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009ja015167] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sheng-Yi Ye
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - J. D. Menietti
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - G. Fischer
- Space Research Institute; Austrian Academy of Sciences; Graz Austria
| | - Z. Wang
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | | | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - W. S. Kurth
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| |
Collapse
|
49
|
Wang Z, Gurnett DA, Fischer G, Ye SY, Kurth WS, Mitchell DG, Leisner JS, Russell CT. Cassini observations of narrowband radio emissions in Saturn's magnetosphere. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009ja014847] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Z. Wang
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - G. Fischer
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
- Space Research Institute; Austrian Academy of Sciences; Graz Austria
| | - S.-Y. Ye
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - W. S. Kurth
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - D. G. Mitchell
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - J. S. Leisner
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
- Institute of Geophysics and Planetary Physics; University of California; Los Angeles California USA
| | - C. T. Russell
- Institute of Geophysics and Planetary Physics; University of California; Los Angeles California USA
| |
Collapse
|
50
|
Carbary JF, Mitchell DG, Krimigis SM, Gurnett DA, Kurth WS. Phase relations between energetic neutral atom intensities and kilometric radio emissions at Saturn. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009ja014519] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- J. F. Carbary
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - D. G. Mitchell
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - S. M. Krimigis
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - W. S. Kurth
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| |
Collapse
|