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Watt, Clare E. J.; Rankin, R. (2010)
Publisher: American Geophysical Union
Languages: English
Types: Article
Subjects:

Classified by OpenAIRE into

arxiv: Physics::Space Physics
Using a self-consistent drift-kinetic simulation code, we investigate whether electron acceleration owing to shear Alfvén waves in the plasma sheet boundary layer is sufficient to cause auroral brightening in the ionosphere. The free parameters used in the simulation code are guided by in situ observations of wave and plasma parameters in the magnetosphere at distances >4 RE from the Earth. For the perpendicular wavelength used in the study, which maps to ∼4 km at 110 km altitude, there is a clear amplitude threshold which determines whether magnetospheric shear Alfvén waves above the classical auroral acceleration region can excite sufficient electrons to create the aurora. Previous studies reported wave amplitudes that easily exceed this threshold; hence, the results reported in this paper demonstrate that auroral acceleration owing to shear Alfvén waves can occur in the magnetosphere at distances >4 RE from the Earth.
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    • Andersson, L., N. Ivchenko, J. Clemmons, A. A. Namgaladze, B. Gustavsson, J. E. Wahlund, L. Eliasson, and R. Y. Yurik (2002a), Electron signatures and Alfvén waves, J. Geophys. Res., 107(A9), 1244, doi:10.1029/ 2001JA900096.
    • Andersson, L., J. E. Wahlund, J. Clemmons, B. Gustavsson, and L. Eliasson (2002b), Electromagnetic waves and bursty electron acceleration: Implications from Freja, Ann. Geophys., 20(2), 139-150.
    • Angelopoulos, V., J. A. Chapman, F. S. Mozer, J. D. Scudder, C. T. Russell, K. Tsuruda, T. Mukai, T. J. Hughes, and K. Yumoto (2002), Plasma sheet electromagnetic power generation and its dissipation along auroral field lines, J. Geophys. Res., 107(A8), 1181, doi:10.1029/2001JA900136.
    • Angelopoulos, V., et al. (2008), Tail reconnection triggering substorm onset, Science, 321, 931-935, doi:10.1126/science.1160495.
    • Asamura, K., et al. (2009), Sheared flows and small‐scale Alfvén wave generation in the auroral acceleration region, Geophys. Res. Lett., 36, L05105, doi:10.1029/2008GL036803.
    • Baumjohann, W. (1993), The near‐Earth plasma sheet: An AMPTE/IRM perspective, Space Sci. Rev., 64, 141-163.
    • Boehm, M. H., C. W. Carlson, J. P. Mcfadden, J. H. Clemmons, and F. S. Mozer (1990), High‐resolution sounding rocket observations of largeamplitude Alfvén waves, J. Geophys. Res., 95(A8), 12,157-12,171.
    • Chaston, C. C. (2006), ULF waves and auroral electrons, in Magnetospheric ULF waves: Synthesis and new directions, edited by K. Takahashi, P. J. Chi, R. E. Denton, and R. L. Lysak, p. 239, AGU, Washington, D. C.
    • Chaston, C. C., C. W. Carlson, R. E. Ergun, and J. P. McFadden (2000), Alfvén waves, density cavities and electron acceleration observed from the FAST spacecraft, Phys. Scr., T84, 64-68.
    • Chaston, C. C., J. W. Bonnell, L. M. Peticolas, C. W. Carlson, J. P. McFadden, and R. E. Ergun (2002), Driven Alfvén waves and electron acceleration: A FAST case study, Geophys. Res. Lett., 29(11), 1535, doi:10.1029/2001GL013842.
    • Chaston, C. C., J. W. Bonnell, C. W. Carlson, J. P. McFadden, R. E. Ergun, and R. J. Strangeway (2003a), Properties of small‐scale Alfvén waves and accelerated electrons from FAST, J. Geophys. Res., 108(A4), 8003, doi:10.1029/2002JA009420.
    • Chaston, C. C., L. M. Peticolas, J. W. Bonnell, C. W. Carlson, R. E. Ergun, J. P. McFadden, and R. J. Strangeway (2003b), Width and brightness of auroral arcs driven by inertial Alfvén waves, J. Geophys. Res., 108(A2), 1091, doi:10.1029/2001JA007537.
    • Chaston, C. C., et al. (2005), Energy deposition by Alfvén waves into the dayside auroral oval: Cluster and FAST observations, J. Geophys. Res., 110, A02211, doi:10.1029/2004JA010483.
    • Chaston, C. C., C. W. Carlson, J. P. McFadden, R. E. Ergun, and R. J. Strangeway (2007), How important are dispersive Alfvén waves for auroral particle acceleration?, Geophys. Res. Lett., 34, L07101, doi:10.1029/ 2006GL029144.
    • Chaston, C. C., C. Salem, J. W. Bonnell, C. W. Carlson, R. E. Ergun, R. J. Strangeway, and J. P. McFadden (2008), The turbulent Alfvénic aurora, Phys. Rev. Lett., 100, 175003.
    • Christon, S. P., D. G. Mitchell, D. J. Williams, L. A. Frank, C. Y. Huang, and T. E. Eastman (1988), Energy‐spectra of plasma sheet ions and electrons from approximately 50 eV/e to approximately 1 MeV during plasma temperature transitions, J. Geophys. Res., 93(A4), 2562-2572.
    • Clark, A. E., and C. E. Seyler (1999), Electron beam formation by smallscale oblique inertial Alfvén waves, J. Geophys. Res., 104(A8), 17,233- 17,249.
    • Damiano, P. A., and A. N. Wright (2005), Two‐dimensional hybrid MHDkinetic electron simulations of an Alfvén wave pulse, J. Geophys. Res., 110(A1), A01201, doi:10.1029/2004JA010603.
    • Damiano, P. A., R. D. Sydora, and J. C. Samson (2003), Hybrid magnetohydrodynamic‐kinetic model of standing shear Alfvén waves, J. Plasma Phys., 69, 277-304.
    • Damiano, P. A., A. N. Wright, R. D. Sydora, and J. C. Samson (2007), Energy dissipation via electron energization in standing shear Alfvén waves, Phys. Plasmas, 14(6), 062904.
    • Dombeck, J., C. Cattell, J. R. Wygant, A. Keiling, and J. Scudder (2005), Alfvén waves and Poynting flux observed simultaneously by Polar and FAST in the plasma sheet boundary layer, J. Geophys. Res., 110, A12S90, doi:10.1029/2005JA011269.
    • Ergun, R. E., L. Andersson, Y. J. Su, D. L. Newman, M. V. Goldman, W. Lotko, C. C. Chaston, and C. W. Carlson (2005), Localized parallel electric fields associated with inertial Alfvén waves, Phys. Plasmas, 12(7), 072901.
    • Genot, V., P. Louarn, and F. Mottez (2000), Electron acceleration by Alfvén waves in density cavities, J. Geophys. Res., 105(A12), 27,611- 27,620.
    • Genot, V., F. Mottez, and P. Louarn (2001), Particle acceleration linked to Alfvén wave propagation on small scale density gradients, Phys. Chem. Earth Part C, 26(1-3), 219-222.
    • Genot, V., P. Louarn, and F. Mottez (2004), Alfvén wave interaction with inhomogeneous plasmas: Acceleration and energy cascade towards small‐scales, Ann. Geophys., 22(6), 2081-2096.
    • Goertz, C. K., and R. W. Boswell (1979), Magnetosphere‐ionosphere coupling, J. Geophys. Res., 84(A12), 7239-7246.
    • Hallinan, T. J., J. Kimball, H. C. Stenbaek‐Nielsen, K. Lynch, R. Arnoldy, J. Bonnell, and P. Kintner (2001), Relation between optical emissions, particles, electric fields, and Alfvén waves in a multiple rayed arc, J. Geophys. Res., 106(A8), 15,445-15,454.
    • Horne, R. B., and M. P. Freeman (2001), A new code for electrostatic simulation by numerical integration of the Vlasov and Ampère equations using MacCormack's method, J. Comput. Phys., 171(1), 182-200.
    • Ivchenko, N., G. Marklund, K. Lynch, D. Pietrowski, R. Torbert, F. Primdahl, and A. Ranta (1999), Quasiperiodic oscillations observed at the edge of an auroral arc by Auroral Turbulence 2, Geophys. Res. Lett, 26(22), 3365-3368.
    • Janhunen, P., A. Olsson, C. T. Russell, and H. Laakso (2006), Alfvénic electron acceleration in aurora occurs in global Alfvén resonosphere region, Space Sci. Rev., 122(1-4), 89-95, doi:10.1007/s11214-006- 7017-5.
    • Keiling, A. (2009), Alfvén waves and their roles in the dynamics of the Earth's magnetotail: A review, Space Sci. Rev., 142(1-4), 73-156, doi:10.1007/s11214-008-9463-8.
    • Keiling, A., J. R. Wygant, C. Cattell, W. Peria, G. Parks, M. Temerin, F. S. Mozer, C. T. Russell, and C. A. Kletzing (2002), Correlation of Alfvén wave Poynting flux in the plasma sheet at 4-7 RE with ionospheric electron energy flux, J. Geophys. Res., 107(A7), 1132, doi:10.1029/ 2001JA900140.
    • Keiling, A., J. R. Wygant, C. A. Cattell, F. S. Mozer, and C. T. Russell (2003), The global morphology of wave Poynting flux: Powering the aurora, Science, 299(5605), 383-386.
    • Kletzing, C. A. (1994), Electron acceleration by kinetic Alfvén waves, J. Geophys. Res., 99(A6), 11,095-11,103.
    • Kletzing, C. A., and S. Hu (2001), Alfvén wave generated electron time dispersion, Geophys. Res. Lett., 28(4), 693-696.
    • Kletzing, C. A., J. D. Scudder, E. E. Dors, and C. Curto (2003), Auroral source region: Plasma properties of the high‐latitude plasma sheet, J. Geophys. Res., 108(A10), 1360, doi:10.1029/2002JA009678.
    • Leveque, R. J. (2002), Finite Volume Methods for Hyperbolic Problems, Cambridge Texts Appl. Math., 1st ed., 558 pp., Cambridge Univ. Press, New York.
    • Lynch, K. A., D. Pietrowski, R. B. Torbert, N. Ivchenko, G. Marklund, and F. Primdahl (1999), Multiple‐point electron measurements in a nightside auroral arc: Auroral Turbulence II particle observations, Geophys. Res. Lett., 26(22), 3361-3364.
    • Lysak, R. L., and W. Lotko (1996), On the kinetic dispersion relation for shear Alfvén waves, J. Geophys. Res., 101(A3), 5085-5094.
    • Lysak, R. L., and Y. Song (2003a), Nonlocal kinetic theory of Alfvén waves on dipolar field lines, J. Geophys. Res., 108(A8), 1327, doi:10.1029/2003JA009859.
    • Lysak, R. L., and Y. Song (2003b), Kinetic theory of the Alfvén wave acceleration of auroral electrons, J. Geophys. Res., 108(A4), 8005, doi:10.1029/2002JA009406.
    • Lysak, R. L., and Y. Song (2005), Nonlocal interactions between electrons and Alfvén waves on auroral field lines, J. Geophys. Res., 110, A10S06, doi:10.1029/2004JA010803.
    • Morooka, M., et al. (2004), Cluster observations of ULF waves with pulsating electron beams above the high latitude dusk‐side auroral region, Geophys. Res. Lett., 31, L05804, doi:10.1029/2003GL017714.
    • Nakamura, T. K. (2000), Parallel electric field of a mirror kinetic Alfvén wave, J. Geophys. Res., 105(A5), 10,729-10,737.
    • Olsson, A., and P. Janhunen (1998), Field‐aligned conductance values estimated from Maxwellian and kappa distributions in quiet and disturbed events using Freja electron data, Ann. Geophys. Ser. A, 16(3), 298-302.
    • Østgaard, N., K. Snekvik, A. L. Borg, A. Åsnes, A. Pedersen, M. Øieroset, T. Phan, and S. E. Haaland (2009), Can magnetotail reconnection produce the auroral intensities observed in the conjugate ionosphere?, J. Geophys. Res., 114, A06204, doi:10.1029/2009JA014185.
    • Rae, I. J., et al. (2009), Near‐Earth initiation of a terrestrial substorm, J. Geophys. Res., 114, A07220, doi:10.1029/2008JA013771.
    • Rankin, R., and V. T. Tikhonchuk (1998), Numerical simulations and simplified models of nonlinear electron inertial Alfvén waves, J. Geophys. Res., 103(A9), 20,419-20,433.
    • Rankin, R., J. C. Samson, and V. T. Tikhonchuk (1999a), Parallel electric fields in dispersive shear Alfvén waves in the dipolar magnetosphere, Geophys. Res. Lett., 26(24), 3601-3604.
    • Rankin, R., J. C. Samson, and V. T. Tikhonchuk (1999b), Discrete auroral arcs and nonlinear dispersive field line resonances, Geophys. Res. Lett., 26(6), 663-666.
    • Semeter, J., and E. M. Blixt (2006), Evidence for Alfvén wave dispersion identified in high‐resolution auroral imagery, Geophys. Res. Lett., 33(13), L13106, doi:10.1029/2006GL026274.
    • Semeter, J., D. Lummerzheim, and G. Haerendel (2001), Simultaneous multispectral imaging of the discrete aurora, J. Atmos. Sol. Terr. Phys., 63(18), 1981-1992.
    • Semeter, J., C. J. Heinselman, G. G. Sivjee, H. U. Frey, and J. W. Bonnell (2005), Ionospheric response to wave‐accelerated electrons at the poleward auroral boundary, J. Geophys. Res., 110, A11310, doi:10.1029/ 2005JA011226.
    • Semeter, J., M. Zettergren, M. Diaz, and S. Mende (2008), Wave dispersion and the discrete aurora: New constraints derived from high‐speed imagery, J. Geophys. Res., 113, A12208, doi:10.1029/2008JA013122.
    • Seyler, C. E., and K. Liu (2007), Particle energization by oblique inertial Alfvén waves in the auroral region, J. Geophys. Res., 112, A09302, doi:10.1029/2007JA012412.
    • Stenbaek‐Nielsen, H. C., T. J. Hallinan, D. L. Osborne, J. Kimball, C. Chaston, J. McFadden, G. Delory, M. Temerin, and C. W. Carlson (1998), Aircraft observations conjugate to FAST: Auroral arc thicknesses, Geophys. Res. Lett., 25(12), 2073-2076.
    • Streltsov, A. V., and W. Lotko (1999), Small‐scale, “electrostatic” auroral structures and Alfvén waves, J. Geophys. Res., 104(A3), 4411-4426.
    • Su, Y. J., S. T. Jones, R. E. Ergun, and S. E. Parker (2004), Modeling of field‐aligned electron bursts by dispersive Alfvén waves in the dayside auroral region, J. Geophys. Res., 109, A11201, doi:10.1029/ 2003JA010344.
    • Su, Y.‐J., R. E. Ergun, S. T. Jones, R. J. Strangeway, C. C. Chaston, S. E. Parker, and J. L. Horwitz (2007), Generation of short‐burst radiation through Alfvénic acceleration of auroral electrons, J. Geophys. Res., 112, A06209, doi:10.1029/2006JA012131.
    • Summers, D., and R. M. Thorne (1992), A new tool for analyzing microinstabilities in space plasmas modeled by a generalized Lorentzian (kappa) distribution, J. Geophys. Res., 97(A11), 16,827-16,832.
    • Swift, D. W. (2007), Simulation of auroral electron acceleration by inertial Alfvén waves, J. Geophys. Res., 112, A12207, doi:10.1029/2007JA012423.
    • Sydorenko, D., R. Rankin, and K. Kabin (2008), Nonlinear effects in the inoosphere Alfvén resonator, J. Geophys. Res., 113, A10206, doi:10.1029/2008JA013579.
    • Thompson, B. J., and R. L. Lysak (1996), Electron acceleration by inertial Alfvén waves, J. Geophys. Res., 101(A3), 5359-5369.
    • Tikhonchuk, V. T., and R. Rankin (2000), Electron kinetic effects in standing shear Alfvén waves in the dipolar magnetosphere, Phys. Plasmas, 7, 2630.
    • Tikhonchuk, V. T., and R. Rankin (2002), Parallel potential driven by a kinetic Alfvén wave on geomagnetic field lines, J. Geophys. Res., 107(A7), 1104, doi:10.1029/2001JA000231.
    • Tsiklauri, D., J. I. Sakai, and S. Saito (2005), Particle‐in‐cell simulations of circularly polarised Alfvén wave phase mixing: A new mechanism for electron acceleration in collisionless plasmas, Astron. Astrophys., 435(3), 1105-1113.
    • Vaivads, A., et al. (2003), What high altitude observations tell us about the auroral acceleration: A cluster/DMSP conjunction, Geophys. Res. Lett., 30(3), 1106, doi:10.1029/2002GL016006.
    • van Leer, B. (1974), Towards ultimate conservative difference scheme. 2. Monotonicity and conservation combined in a second‐order scheme, J. Comput. Phys., 14(4), 361-370.
    • Watt, C. E. J., and R. Rankin (2002), Electron acceleration due to inertial Alfvén waves in a non‐Maxwellian plasma, J. Geophys. Res., 107(A9), 1244, doi:10.1029/2001JA900096.
    • Watt, C. E. J., and R. Rankin (2008a), DK‐1D: A drift‐kinetic simulation tool for modelling the shear Alfvén wave and its interaction with collisionless plasma, Plasma Phys. Controlled Fusion, 50(7), 074008.
    • Watt, C. E. J., and R. Rankin (2008b), Electron acceleration and parallel electric fields due to kinetic Alfvén waves in plasma with similar thermal and Alfvén speeds, Adv. Space Res., 42(5), 964-969.
    • Watt, C. E. J., and R. Rankin (2009), Electron trapping in shear Alfvén waves that power the aurora, Phys. Rev. Lett., 102(4), 045002.
    • Watt, C. E. J., R. Rankin, and R. Marchand (2004), Kinetic simulations of electron response to shear Alfvén waves in magnetospheric plasmas, Phys. Plasmas, 11(4), 1277-1284.
    • Watt, C. E. J., R. Rankin, I. J. Rae, and D. M. Wright (2005), Self‐consistent electron acceleration due to inertial Alfvén wave pulses, J. Geophys. Res., 110, A10S07, doi:10.1029/2004JA010877.
    • Watt, C. E. J., R. Rankin, I. J. Rae, and D. M. Wright (2006), Inertial Alfvén waves and acceleration of electrons in nonuniform magnetic fields, Geophys. Res. Lett., 33, L02106, doi:10.1029/2005GL024779.
    • Wygant, J. R., et al. (2000), Polar spacecraft based comparisons of intense electric fields and Poynting flux near and within the plasma sheettail lobe boundary to UVI images: An energy source for the aurora, J. Geophys. Res., 105(A8), 18,675-18,692.
    • Wygant, J. R., et al. (2002), Evidence for kinetic Alfvén waves and parallel electron energization at 4-6 RE altitudes in the plasma sheet boundary layer, J. Geophys. Res., 107(A8), 1201, doi:10.1029/2001JA900113. R. Rankin and C. E. J. Watt, Department of Physics, University of Alberta, Edmonton, AB T6G 2G7, Canada. (; )
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