Abstract
Regions of the detection of electromagnetic ion-cyclotron (EMIC) waves on the THEMIS satellites near the equatorial plane and the precipitation of energetic protons on POES low Earth orbiting satellites are compared with the magnetospheric magnetic field model. It is confirmed that low Earth orbiting satellites detect the precipitation of energetic protons in the regon associated with observations of EMIC waves in the magnetosphere. This is consistent with the idea that protons are scattered in the loss cone as a result of ioncyclotron interaction. Thus, observations of fluxes of energetic protons in low Earth orbits can be used to monitor ion-cyclotron instability regions in the magnetosphere. Simultaneous observations at high and low Earth orbits contribute to the construction of a spatiotemporal pattern of the interaction region of EMIC waves and energetic protons. In addition, it is shown that proton precipitation associated with EMIC waves can cause errors in determining the latitude of the isotropic boundary (the equatorial boundary of isotropic fluxes of energetic protons), which is an indicator of the configuration of the magnetic field in the magnetosphere.
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Angelopoulos, V., The THEMIS mission, Space Sci. Rev., 2008, vol. 141, pp. 5–34. doi 10.1007/s11214-008-9336-1
Auster, H.U., Glassmeier, K.H., Magnes, W., et al., The THEMIS fluxgate magnetometer, Space Sci. Rev., 2008, vol. 141, pp. 235–264. doi 10.1007/s11214-008- 9365-9
Bespalov, P.A., Demekhov, A.G., Grafe, A., and Trakhtengerts, V.Yu., On the role of collective interactions in asymmetric ring current formation, Ann. Geophys., 1994, vol. 12, pp. 422–430.
Cornwall, J.M., Coroniti, F.V., and Thorne, R.M., Turbulent loss of ring current protons, J. Geophys. Res., 1970, vol. 75, pp. 4699–4709.
Engebretson, M.J., Posch, J.L., Wygant, J.R., et al., Van Allen probes, NOAA, GOES, and ground observations of an intense EMIC wave event extending over 12 h in magnetic local time, J. Geophys. Res.: Space Phys., 2015, vol. 120, pp. 5465–5488. doi 10.1002/2015JA021227
Erlandson, R.E. and Ukhorskiy, A.J., Observations of electromagnetic ion cyclotron waves during geomagnetic storms: Wave occurrence and pitch angle scattering, J. Geophys. Res., 2001, vol. 106, pp. 3883–3895.
Evans, D.S. and Greer, M.S., Polar Orbiting Environmental Satellite Space Experiment Monitor-2: Instrument Description and Archive Data Documentation, NOAA Technical Memorandum Version 1.3, Boulder, Colorado: NOAA Environmental Center, 2004.
Ilie, R., Ganushkina, N., Toth, G., Dubyagin, S., and Liemohn, M.W., Testing the magnetotail configuration based on observations of low-altitude isotropic boundaries during quiet times, J. Geophys. Res.: Space Phys., 2015, vol. 120, pp. 10557–10573. doi 10.1002/2015JA021858
Keika, K., Takahashi, K., Ukhorskiy, A.Y., and Miyoshi, Y., Global characteristics of electromagnetic ion cyclotron waves: Occurrence rate and its storm dependence, J. Geophys. Res.: Space Phys., 2013, vol. 118, pp. 4135–4150. doi 10.1002/jgra.50385
Kennel, C.F. and Petschek, H.E., Limit on stably trapped particle fluxes, J. Geophys. Res., 1966, vol. 71, no. 1, pp. 1–28.
Li, W., Ni, B., Thorne, R.M., et al., Quantifying hissdriven energetic electron precipitation: a detailed conjunction event analysis, Geophys. Res. Lett., 2014, vol. 41, pp. 1085–1092. doi 10.1002/2013GL059132
Morley, S.K., Ables, S.T., Sciffer, M.D., and Fraser, B.J., Multipoint observations of Pc1–2 waves in the afternoon sector, J. Geophys. Res., 2009, vol. 114, A09205. doi 10.1029/2009JA014162
Newell, P.T., Sergeev, V.A., Bikkuzina, G.R., and Wing, S., Characterizing the state of the magnetosphere: Testing the ion precipitation maxima latitude (b2i) and the ion isotropy boundary, J. Geophys. Res., 1998, vol. 103, pp. 4739–4745.
Olson, J.V. and Lee, L.C., Pc1 wave generation by sudden impulses, Planet. Space Sci., 1983, vol. 31, pp. 295–302.
Roederer, J.G., On the adiabatic motion of energetic particles in a model magnetosphere, J. Geophys. Res., 1967, vol. 72, pp. 981–992.
Sagdeev, R.Z. and Shafranov, V.D., On the Instability of a plasma with an anisotropic distribution of velocities in a magnetic field, Sov. Phys. JETP, 1961, vol. 12, no. 1, pp. 130–132.
Semenova, N.V., Yahnina, T.A., Yahnin, A.G., and Demekhov, A.G., Global distribution of energetic proton precipitations equatorward of the boundary of isotropic fluxes, Geomagn. Aeron. (Engl. Transl.), 2017, vol. 57, no. 4, pp. 398–405.
Sergeev, V.A. and Gvozdevsky, B.B., MT-index—a possible new index to characterize the magnetic configuration of magnetotail, Ann. Geophys., 1995, vol. 13, pp. 1093–1103. doi 10.1007/s00585-995-1093-9
Sergeev, V.A. and Tsyganenko, N.A., Energetic particle losses and trapping boundaries as deduced from calculations with a realistic magnetic field model, Planet. Space Sci., 19892, vol. 30, pp. 999–1006. doi 10.1016/0032-0633(82)90149-0
Sergeev, V.A., Chernyaev, I.A., Angelopoulos, V., and Ganushkina, N.Y., Magnetospheric conditions near the equatorial footpoints of proton isotropy boundaries, Ann. Geophys., 2015a, vol. 33, pp. 1485–1493. doi 10.5194/angeo-33-1485-2015
Sergeev, V.A., Chernyaeva, S.A., Apatenkov, S.V., Ganushkina, N.Y., and Dubyagin, S.V., Energy-latitude dispersion patterns near the isotropy boundaries of energetic protons, Ann. Geophys., 2015b, vol. 33, pp. 1059–1070.
Tsyganenko, N.A., A magnetospheric magnetic field model with a warped tail current sheet, Planet. Space Sci., 1989, vol. 37, pp. 5–20.
Usanova, M.E., Mann, I.R., Kale, Z.C., et al., Conjugate ground and multisatellite observations of compressionrelated EMIC Pc1 waves and associated proton precipitation, J. Geophys. Res., 2010, 2010, vol. 115, A07208. doi 10.1029/2009JA014935
Usanova, M.E., Mann, I.R., Bortnik, J., Shao, L., and Angelopoulos, V., THEMIS observations of electromagnetic ion cyclotron wave occurrence: Dependence on AE,SYMH, and solar wind dynamic pressure, J. Geophys. Res., 2012, vol. 117, A10218. doi 10.1029/2012JA018049
Wang, C.P., Zaharia, S.G., Lyons, L.R., and Angelopoulos, V., Spatial distributions of ion pitch angle anisotropy in the near-Earth magnetosphere and tail plasma sheet, J. Geophys. Res., 2012, vol. 118, pp. 244–255. doi 10.1029/2012JA018275
Yahnin, A.G. and Yahnina, T.A., Energetic proton precipitation related to ion-cyclotron waves, J. Atmos. Sol.-Terr. Phys., 2007, vol. 69, no. 14, pp. 1690–1706. doi 10.1016/j.jastp.2007.02.010
Yahnin, A.G., Yahnina, T.A., Ganushkina, N.Y., Angelopoulos, V., Mozer, F.S., Kangas, J., Manninen, J., Fritz, T.A., and Russell, C.T., Multi-satellite study of phenomena in the evening magnetosphere during the Pc1–2 event, in Proc. of XXV Apatity Seminar “Physics of Auroral Phenomena”, 26 February–1 March, 2002, Apatity, Russia, 2002, pp. 85–88.
Yahnin, A.G., Yahnina, T.A., and Demekhov, A.G., Interrelation between localized energetic particle precipitation and cold plasma in homogeneities in the magnetosphere, Geomagn. Aeron. (Engl. Transl.), 2006, vol. 46, no. 3, pp. 332–338.
Yahnin, A.G., Popova, T.A., and Yahnina, T.A., Some characteristics of the magnetospheric source of dayside subaroural proton precipitations during magnetospheric compression, Cosmic Res., 2015, vol. 53, no. 1, pp. 80–87.
Yahnina, T.A., Yahnin, A.G., Kangas, J., et al., Energetic particle counterparts for geomagnetic pulsations of Pc1 and IPDP types, Ann. Geophys., 2003, vol. 21, pp. 2281–2292.
Yahnina, T.A., Frey, H.U., Bosinger, T., and Yahnin, A.G., Evidence for subauroral proton flashes on the dayside as the result of the ion cyclotron interaction, J. Geophys. Res., 2008, vol. 113, A07209. doi 10.1029/2008JA013099
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Original Russian Text © T.A. Popova, A.G. Yahnin, A.G. Demekhov, S.A. Chernyaeva, 2018, published in Geomagnetizm i Aeronomiya, 2018, Vol. 58, No. 4, pp. 484–497.
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Popova, T.A., Yahnin, A.G., Demekhov, A.G. et al. Generation of EMIC Waves in the Magnetosphere and Precipitation of Energetic Protons: Comparison of the Data from THEMIS High Earth Orbiting Satellites and POES Low Earth Orbiting Satellites. Geomagn. Aeron. 58, 469–482 (2018). https://doi.org/10.1134/S0016793218040114
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DOI: https://doi.org/10.1134/S0016793218040114