Fast Plasma Investigation for Magnetospheric Multiscale

Pollock, C. J.; Moore, T. E.; Jacques, A. D.; Burch, J. L.; Gliese, U.; Saito, Y.; Omoto, T.; Avanov, L. A.; Barrie, A. C.; Coffey, V. N.; Dorelli, J.; Gershman, D. J.; Giles, B. L.; Rosnack, T.; Salo, C.; Yokota, Shoichiro; Adrian, M. L.; Aoustin, C.; Auletti, C.; Aung, Soe; Bigio, Victor; Cao, N.; Chandler, M. O.; Chornay, D.; Christian, Kent D.; Connerney, J. E. P.; Collinson, G.; Corris, T.; Santos, A. De Los; Devlin, Rober; Diaz, T.; Dickerson, T.; Dickson, C. R.; Diekmann, A.; Diggs, F.; Duncan, Charles H.; Figueroa-Viñas, A.; Firman, C.; Freeman, Matthew S.; Galassi, Nicholas; Garcia, Kristina Montt de; Goodhart, G.; Guererro, D.; Hageman, J.; Hanley, J.; Hemminger, E.; Holland, Matthew; Hutchins, M. L.; James, Thomas Leroy; Jones, William H.; Kreisler, S.; Kujawski, J.; Lavu, V.; Lobell, J.; LeCompte, E.; Lukemire, A.; MacDonald, E.; Mariano, A. J.; Mukai, T.; Narayanan, K. Lakshmi; Nguyan, Q.; Onizuka, M.; Paterson, W. R.; Persyn, S.; Piepgrass, B.; Cheney, F.; Rager, A. C.; Raghuram, T.; Ramil, A.; Reichenthal, Lillian; Rodríguez, Héctor; Rouzaud, Jean-Noël; Rucker, Alan M.; Samara, M.; Sauvaud, J. A.; Schuster, David I.; Shappirio, M.; Shelton, K.; Sher, D.; Smith, Daniel L.; Smith, Kelly; Smith, S. E.; Steinfeld, D.; Szymkiewicz, R.; Tanimoto, Kazuo; Taylor, John R.; Tucker, C. J.; Tull, K.; Uhl, A.; Vloet, J.; Walpole, P.; Weidner, S.; White, Daniel; Winkert, G.; Yeh, Pen-Shu; Zeuch, M.

doi:10.1007/s11214-016-0245-4

Cited by 1,122 publications

(1,138 citation statements)

References 25 publications

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“…While a typical lower-hybrid period is τ LH ∼ 100 ms, the fluxgate magnetometer can sample waveforms in all the magnetic field components at the rate of 128 samples per second (Russell et al, 2016). Simultaneously, the Fast Plasma Investigation (Pollock et al, 2016) can provide electron distributions down to 30 ms and ion distributions down to 150 ms. These cadences are certainly high enough to study the role of the ions with respect to the lowerhybrid whistlers and the effects the latter have on the electrons.…”

Section: Discussionmentioning

confidence: 99%

Two-stream instabilities from the lower-hybrid frequency to the electron cyclotron frequency: application to the front of quasi-perpendicular shocks

Muschietti

Lembège

2017

Ann. Geophys.

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Abstract. Quasi-perpendicular supercritical shocks are characterized by the presence of a magnetic foot due to the accumulation of a fraction of the incoming ions that is reflected by the shock front. There, three different plasma populations coexist (incoming ion core, reflected ion beam, electrons) and can excite various two-stream instabilities (TSIs) owing to their relative drifts. These instabilities represent local sources of turbulence with a wide frequency range extending from the lower hybrid to the electron cyclotron. Their linear features are analyzed by means of both a dispersion study and numerical PIC simulations. Three main types of TSI and correspondingly excited waves are identified:i. Oblique whistlers due to the (so-called "fast") relative drift between reflected ions/electrons; the waves propagate toward upstream away from the shock front at a strongly oblique angle (θ ∼ 50 • ) to the ambient magnetic field B o , have frequencies a few times the lower hybrid, and have wavelengths a fraction of the ion inertia length c/ω pi .ii. Quasi-perpendicular whistlers due to the (so-called "slow") relative drift between incoming ions/electrons; the waves propagate toward the shock ramp at an angle θ a few degrees off 90 • , have frequencies around the lower hybrid, and have wavelengths several times the electron inertia length c/ω pe .iii. Extended Bernstein waves which also propagate in the quasi-perpendicular domain, yet are due to the (so-called "fast") relative drift between reflected ions/electrons; the instability is an extension of the electron cyclotron drift instability (normally strictly perpendicular and electrostatic) and produces waves with a magnetic component which have frequencies close to the electron cyclotron as well as wavelengths close to the electron gyroradius and which propagate toward upstream.Present results are compared with previous works in order to stress some features not previously analyzed and to define a more synthetic view of these TSIs.

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Section: Discussionmentioning

confidence: 99%

Two-stream instabilities from the lower-hybrid frequency to the electron cyclotron frequency: application to the front of quasi-perpendicular shocks

Muschietti

Lembège

2017

Ann. Geophys.

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“…6. For these 3-D distributions, ions with energies of 10 eV to 30 keV and the magnetic field observed by the fast plasma investigation (FPI) instrument (Pollock et al 2016) and the fluxgate magnetometer (FGM) (Russell et al 2016) are applied. Figure 6a, b presents the 3-D ion distributions in scatter mode and the 2-D slice of distributions for 02:13:19.916 UT on November 18, 2015, respectively.…”

Section: Data Analysis Tools For the Erg Projectmentioning

confidence: 99%

The ERG Science Center

Miyoshi

Hori

Motomizu

et al. 2018

Earth Planets Space

153

156

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The Exploration of energization and Radiation in Geospace (ERG) Science Center serves as a hub of the ERG project, providing data files in a common format and developing the space physics environment data analysis software and plug-ins for data analysis. The Science Center also develops observation plans for the ERG (Arase) satellite according to the science strategy of the project. Conjugate observations with other satellites and ground-based observations are also planned. These tasks contribute to the ERG project by achieving quick analysis and well-organized conjugate ERG satellite and ground-based observations. © The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creat iveco mmons .org/licen ses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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“…1d). Figure 2 shows the Bz (northward) component of the magnetic field from GOES 13, 14, and 15 (Singer et al 1996), Van Allen Probe-A (Kletzing et al 2013), MMS 3 (Russell et al 2016), Geotail (Kokubun et al 1994), and Cluster 1 (Balogh et al 2001) and electron energy spectra from the MMS Energetic Ion Spectrometer (EIS) (Mauk et al 2014) and the Fast Plasma Instruments (FPI) (Pollock et al 2016) instrument together with the AU and AL indices. The electron energy spectra (panel f ) are a combined data product from the MMS1 EIS instrument for energy >25 keV and from the MMS3 FPI instrument for energy <25 keV.…”

Section: Observationsmentioning

confidence: 99%

Near-Earth plasma sheet boundary dynamics during substorm dipolarization

Nakamura

Nagai

Birn

et al. 2017

Earth Planets Space

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We report on the large-scale evolution of dipolarization in the near-Earth plasma sheet during an intense (AL ~ −1000 nT) substorm on August 10, 2016, when multiple spacecraft at radial distances between 4 and 15 R E were present in the night-side magnetosphere. This global dipolarization consisted of multiple short-timescale (a couple of minutes) B z disturbances detected by spacecraft distributed over 9 MLT, consistent with the large-scale substorm current wedge observed by ground-based magnetometers. The four spacecraft of the Magnetospheric Multiscale were located in the southern hemisphere plasma sheet and observed fast flow disturbances associated with this dipolarization. The high-time-resolution measurements from MMS enable us to detect the rapid motion of the field structures and flow disturbances separately. A distinct pattern of the flow and field disturbance near the plasma boundaries was found. We suggest that a vortex motion created around the localized flows resulted in another fieldaligned current system at the off-equatorial side of the BBF-associated R1/R2 systems, as was predicted by the MHD simulation of a localized reconnection jet. The observations by GOES and Geotail, which were located in the opposite hemisphere and local time, support this view. We demonstrate that the processes of both Earthward flow braking and of accumulated magnetic flux evolving tailward also control the dynamics in the boundary region of the near-Earth plasma sheet.

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Fast Plasma Investigation for Magnetospheric Multiscale

Cited by 1,122 publications

References 25 publications

Two-stream instabilities from the lower-hybrid frequency to the electron cyclotron frequency: application to the front of quasi-perpendicular shocks

Two-stream instabilities from the lower-hybrid frequency to the electron cyclotron frequency: application to the front of quasi-perpendicular shocks

The ERG Science Center

Near-Earth plasma sheet boundary dynamics during substorm dipolarization

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