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  • 1
    Online Resource
    Online Resource
    Plasmaspheric Hiss: Coherent and Intense
    American Geophysical Union (AGU) ; 2018
    In:  Journal of Geophysical Research: Space Physics Vol. 123, No. 12 ( 2018-12)
    Details
    In: Journal of Geophysical Research: Space Physics, American Geophysical Union (AGU), Vol. 123, No. 12 ( 2018-12)
    Abstract: Intense plasmaspheric hiss is coherent at all local times Approximately 3 to 5 cycle coherent plasmaspheric hiss are outer zone chorus subelements that have propagated into the plasmasphere Most of plasmaspheric hiss is elliptically polarized with some circular and linear polarizations; these features are consistent with theory
    Type of Medium: Online Resource
    ISSN: 2169-9380 , 2169-9402
    URL: Article
    DOI: 10.1029/2018JA025975
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2018
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  • 2
    Online Resource
    Online Resource
    Effects of chemical releases by the STS 3 Orbiter on the ionosphere
    American Geophysical Union (AGU) ; 1985
    In:  Journal of Geophysical Research: Space Physics Vol. 90, No. A4 ( 1985-04), p. 3487-3497
    Details
    In: Journal of Geophysical Research: Space Physics, American Geophysical Union (AGU), Vol. 90, No. A4 ( 1985-04), p. 3487-3497
    Abstract: The Plasma Diagnostics Package, which was flown aboard STS 3 as part of the Office of Space Science first shuttle payload (OSS 1), recorded the effects of various chemical releases from the orbiter. Changes in the plasma environment were observed to occur during flash evaporator system releases, water dumps, and maneuvering thruster operations. During flash evaporator operations, broadband orbiter‐generated electrostatic noise was enhanced, and plasma density irregularities (Δ N/N ) were observed to increase by 3–30 times with a spectrum which rose steeply and peaked below 6 Hz. Ions with energies up to several hundred eV were also observed during one flash evaporator operation. In the case of water dumps, background electrostatic noise was enhanced at frequencies below about 3 kHz and suppressed at frequencies above 3 kHz during the dump, and Δ N/N was also seen to increase by 5–6 times. Various changes in the plasma environment were effected by primary and vernier thruster operations, including increases in electron density by as much as 3 orders of magnitude, neutral pressure increases to as high as 10 −4 torr from the nominal 10 −7 torr, and perturbations in the spacecraft potential by several volts, particularly when measured in relation to the plasma potential in the wake. Thruster activity also stimulated electrostatic noise with a spectrum which peaked at approximately 0.5 kHz. In addition, ions with energies up to 1 keV were seen during some thruster events.
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/JA090iA04p03487
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 1985
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  • 3
    Online Resource
    Online Resource
    Lower‐Band “Monochromatic” Chorus Riser Subelement/Wave Packet Observations
    American Geophysical Union (AGU) ; 2020
    In:  Journal of Geophysical Research: Space Physics Vol. 125, No. 10 ( 2020-10)
    Details
    In: Journal of Geophysical Research: Space Physics, American Geophysical Union (AGU), Vol. 125, No. 10 ( 2020-10)
    Abstract: Chorus rising tone elements/packets are found to be monochromatic The largest amplitude waves within a subelement have constant frequency The ends of the packets have the greatest frequency deviations; increases and decreases are detected at both ends
    Type of Medium: Online Resource
    ISSN: 2169-9380 , 2169-9402
    URL: Article
    DOI: 10.1029/2020JA028090
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2020
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  • 4
    Online Resource
    Online Resource
    Polar cap boundary layer waves: An auroral zone phenomenon
    American Geophysical Union (AGU) ; 2001
    In:  Journal of Geophysical Research: Space Physics Vol. 106, No. A9 ( 2001-09), p. 19035-19055
    Details
    In: Journal of Geophysical Research: Space Physics, American Geophysical Union (AGU), Vol. 106, No. A9 ( 2001-09), p. 19035-19055
    Abstract: Polar cap boundary layer waves are ELF/VLF electric and magnetic waves detected on field lines just adjacent to the polar cap. Intense waves are present at this location essentially all (96%) of the time. The wave latitude‐local time distribution is shown to be the same as that of the Feldstein auroral oval, a distribution centered at ∼75° at local noon and ∼65° at local midnight. The most intense waves are detected coincident with the strongest magnetic field gradients (field‐aligned currents). Statistically, the wave intensities are greatest near local noon (10 −13 mV 2 m −1 at 3 kHz) and midnight and are least near dawn and dusk (∼5 × 10 −15 mV 2 m −1 at 3 kHz). The noon and midnight wave intensities increase slightly when the interplanetary magnetic field is directed southward. The dawn and dusk waves appear to be controlled by the solar wind speed. Using high‐resolution data, specific frequency bands of electromagnetic whistler‐mode waves are identified: ∼200 Hz and 1‐2 and ∼5 kHz. These may correspond to previously identified “magnetic noise bursts” and “auroral hiss”, respectively. Assuming cyclotron resonant interactions, the 1‐ to 5‐kHz auroral hiss is shown to be resonant with ∼50‐eV to ∼1.0‐keV electrons. Several mechanisms, both resonant (nonlocal) and nonresonant (local), are suggested for the generation of the ∼200‐Hz electromagnetic waves. Three types of intense electric signals are present: solitary bipolar pulses (electron holes), waves at ∼4 × 10 2 to 6 × 10 3 Hz (lower hybrid waves), and narrowband waves at ∼10 kHz (electrostatic waves near the upper hybrid resonance frequency). Solitary bipolar pulse onset events have been detected for the first time. The bipolar pulses reached 2 mV m −1 peak‐to‐peak amplitudes within 3 ms. An exponential growth rate of 0.72 ms, or 0.25 f ce , was determined. The previously reported “broadband nature” of the polar cap boundary layer (and low‐latitude boundary layer) waves is now postulated to be caused by a fast switching between the various electromagnetic and electrostatic modes described above. The polar cap boundary layer waves are most likely a consequence of instabilities associated with auroral zone field‐aligned currents carried by 50‐eV to 1.0‐keV electrons and protons. The currents in turn have been ascribed to be driven by the solar wind‐magnetosphere global interaction. One consequence of the presence of the waves at high altitudes is diffusion of magnetosheath plasma into the magnetosphere and magnetospheric plasma out into the magnetosheath (cross‐field diffusion, due to parasitic wave‐particle interactions). It is speculated that field‐aligned currents and similar wave modes will be detected at all planetary magnetospheres.
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/2000JA003007
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2001
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  • 5
    Online Resource
    Online Resource
    Dayside ELF electromagnetic wave survey: A Polar statistical study of chorus and hiss : CHORUS AND HISS
    American Geophysical Union (AGU) ; 2012
    In:  Journal of Geophysical Research: Space Physics Vol. 117, No. A9 ( 2012-09), p. n/a-n/a
    Details
    In: Journal of Geophysical Research: Space Physics, American Geophysical Union (AGU), Vol. 117, No. A9 ( 2012-09), p. n/a-n/a
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/2011JA017180
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2012
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  • 6
    Online Resource
    Online Resource
    Gaseous environment of the Shuttle early in the Spacelab 2 mission
    American Institute of Aeronautics and Astronautics (AIAA) ; 1988
    In:  Journal of Spacecraft and Rockets Vol. 25, No. 2 ( 1988-03), p. 169-174
    Details
    In: Journal of Spacecraft and Rockets, American Institute of Aeronautics and Astronautics (AIAA), Vol. 25, No. 2 ( 1988-03), p. 169-174
    Type of Medium: Online Resource
    ISSN: 0022-4650 , 1533-6794
    URL: Article
    DOI: 10.2514/3.25966
    Language: English
    Publisher: American Institute of Aeronautics and Astronautics (AIAA)
    Publication Date: 1988
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  • 7
    Online Resource
    Online Resource
    Quasi-coherent chorus properties: 1. Implications for wave-particle interactions : QUASI-COHERENT CHORUS
    American Geophysical Union (AGU) ; 2011
    In:  Journal of Geophysical Research: Space Physics Vol. 116, No. A9 ( 2011-09), p. n/a-n/a
    Details
    In: Journal of Geophysical Research: Space Physics, American Geophysical Union (AGU), Vol. 116, No. A9 ( 2011-09), p. n/a-n/a
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/2010JA016237
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2011
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  • 8
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    Online Resource
    Correction to “Quasi-coherent chorus properties: 1. Implications for wave-particle interactions” : CORRECTION
    American Geophysical Union (AGU) ; 2012
    In:  Journal of Geophysical Research: Space Physics Vol. 117, No. A3 ( 2012-03), p. n/a-n/a
    Details
    In: Journal of Geophysical Research: Space Physics, American Geophysical Union (AGU), Vol. 117, No. A3 ( 2012-03), p. n/a-n/a
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/2012JA017538
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2012
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    detail.hit.zdb_id: 710256-2
    detail.hit.zdb_id: 2016804-4
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  • 9
    Online Resource
    Online Resource
    Two sources of dayside intense, quasi‐coherent plasmaspheric hiss: A new mechanism for the slot region?
    American Geophysical Union (AGU) ; 2017
    In:  Journal of Geophysical Research: Space Physics Vol. 122, No. 2 ( 2017-02), p. 1643-1657
    Details
    In: Journal of Geophysical Research: Space Physics, American Geophysical Union (AGU), Vol. 122, No. 2 ( 2017-02), p. 1643-1657
    Abstract: There are two sources of dayside plasmaspheric hiss. One source is solar pressure, and the other is substorms/small injection events Dayside plasmaspheric hiss is typically elliptically polarized and quasi‐coherent. Models should include these features in future codes The dayside wedge plasmaspheric hiss has a maximum intensity at L = 2 to 3, indicating that these waves could be causing the electron slot
    Type of Medium: Online Resource
    ISSN: 2169-9380 , 2169-9402
    URL: Issue
    URL: Article
    DOI: 10.1002/jgra.v122.2
    DOI: 10.1002/2016JA023289
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2017
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  • 10
    Online Resource
    Online Resource
    Plasmaspheric hiss properties: Observations from Polar
    American Geophysical Union (AGU) ; 2015
    In:  Journal of Geophysical Research: Space Physics Vol. 120, No. 1 ( 2015-01), p. 414-431
    Details
    In: Journal of Geophysical Research: Space Physics, American Geophysical Union (AGU), Vol. 120, No. 1 ( 2015-01), p. 414-431
    Abstract: Hiss intensities are high during high‐solar wind pressure (HSWP) intervals During HSWP intervals and L   〉  7, hiss is coherent or quasi‐coherent On average hiss intensities are larger on the dayside than on the nightside
    Type of Medium: Online Resource
    ISSN: 2169-9380 , 2169-9402
    URL: Issue
    URL: Article
    DOI: 10.1002/jgra.v120.1
    DOI: 10.1002/2014JA020518
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2015
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    SSG: 16,13
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