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On Acceleration of <1 Mev/N He Ions in the Corotating Compression Regions Near 1 Au: Stereo Observations : Volume 27, Issue 9 (30/09/2009)

By Bučík, R.

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Book Id: WPLBN0003981800
Format Type: PDF Article :
File Size: Pages 14
Reproduction Date: 2015

Title: On Acceleration of <1 Mev/N He Ions in the Corotating Compression Regions Near 1 Au: Stereo Observations : Volume 27, Issue 9 (30/09/2009)  
Author: Bučík, R.
Volume: Vol. 27, Issue 9
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2009
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Mall, U., Mason, G. M., Korth, A., & Bučík, R. (2009). On Acceleration of <1 Mev/N He Ions in the Corotating Compression Regions Near 1 Au: Stereo Observations : Volume 27, Issue 9 (30/09/2009). Retrieved from http://www.ebooklibrary.org/


Description
Description: Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany. Observations of multi-MeV corotating interaction region (CIR) ions are in general consistent with models of CIR shock acceleration and transport. The presence of suprathermal particles near 1 AU in unshocked compression regions is not adequately explained. Nonetheless, more recent works demonstrate that unshocked compression regions associated with CIRs near 1 AU could energize particles. In the energy range from ~0.1 to ~1 MeV/n we investigate CIR events observed in 2007–2008 by the STEREO A and B spacecraft. We treat the predictions of compression acceleration by comparing the observed ion intensities with the model parameters. These observations show that the ion intensity in CIR events with in-situ reverse shock is well organized by the parameters which characterize the compression region itself, like compression width, solar wind speed gradients and the total pressure. In turn, for CIR events with the absence of the shocks the model predictions are not fulfilled.

Summary
On acceleration of <1 MeV/n He ions in the corotating compression regions near 1 AU: STEREO observations

Excerpt
Acuña, M. H., Curtis, D., Scheifele, J. L., Russell, C. T., Schroeder, P., Szabo, A., and Luhmann, J. G.: The STEREO/IMPACT Magnetic Field Experiment, Space Sci. Rev., 136, 203–226, 2008.; Barnes, C. W. and Simpson, J. A.: Evidence for interplanetary acceleration of nucleons in corotating interaction regions, Astrophys. J., 210, 91–96, 1976.; Belcher, J. W. and Davis Jr., L.: Large-amplitude Alfvén waves in the interplanetary medium, 2., J. Geophys. Res., 76, 3534–3563, 1971.; Bučík, R., Gómez-Herrero, R., Korth, A., Mall, U., and Mason, G. M.: Energetic ions from corotating interaction regions during small solar events in May 2007, in: Proceedings of the 21st European Cosmic Ray Symposium, Košice, Slovakia, 9–12 September 2008, 322–327, 2009.; Burlaga, L. F.: Interplanetary magnetohydrodynamics, Oxford University Press, New York, 1995.; Siscoe, G. L.: Three-dimensional aspects of interplanetary shock waves, J. Geophys. Res., 81, 6235–6241, 1976.; Smith, E. J. and Wolfe, J. H.: Fields and plasmas in the outer solar system, Space Sci. Rev., 23, 217–252, 1979.; Chotoo, K., Schwadron, N. A., Mason, G. M., Zurbuchen, T. H., Gloeckler, G., Posner, A., Fisk, L. A., Galvin, A. B., Hamilton, D. C., and Collier, M. R.: The suprathermal seed population for corotating interaction region ions at $1 AU}$ deduced from composition and spectra of \chem{H^+}, \chem{He++, and \chem{He^+} observed on Wind, J. Geophys. Res., 105, 23107–23122, 2000.; Christon, S. P. and Simpson, J. A.: Separation of corotating nucleon fluxes from solar flare fluxes by radial gradients and nuclear composition, Astrophys. J., 227, 49–53, 1979.; Dwyer, J. R., Mason, G. M., Mazur, J. E., Jokipii, J. R., von Rosenvinge, T. T., and Lepping, R. P.: Perpendicular transport of low-energy corotating interaction region – associated nuclei, Astrophys. J., 490, 115–118, 1997.; Fisk, L. A. and Gloeckler, G.: The common spectrum for accelerated ions in the quiet-time solar wind, Astrophys. J., 640, 79–82, 2006.; Fisk, L. A. and Lee, M. A.: Shock acceleration of energetic particles in corotating interaction regions in the solar wind, Astrophys. J., 237, 620–626, 1980.; Galvin, A. B., Kistler, L. M., Popecki, M. A., et al.: The Plasma and Suprathermal Ion Composition (PLASTIC) investigation on the STEREO observatories, Space Sci. Rev., 136, 437–486, 2008.; Giacalone, J. and Jokipii, J. R.: Spatial variation of accelerated pickup ions at co-rotating interaction regions, Geophys. Res. Lett., 24, 1723–1726, 1997.; Giacalone, J., Jokipii, J. R., and Kóta, J.: Particle acceleration in solar wind compression regions, Astrophys. J., 573, 845–850, 2002.; Gómez-Herrero, R., Klassen, A., Müller-Mellin, R., Heber, B., Wimmer-Schweingruber, R., and Böttcher, S: Recurrent CIR-accelerated ions observed by STEREO SEPT, J. Geophys. Res., 114, A05101, doi:10.1029/2008JA013755, 2009.; Gosling, J. T. and Pizzo, V. J.: Formation and evolution of corotating interaction regions and their three dimensional structure, Space Sci. Rev., 89, 21–52, 1999.; Hundhausen, A. J. and Gosling, J. T.: Solar wind structure at large heliocentric distances - an interpretation of Pioneer 10 observations, J. Geophys. Res., 81, 1436–1440, 1976.; Intriligator, D. S. and Siscoe, G. L.: Stream interfaces and energetic ions closer than expected: Analyses of Pioneers 10 and 11 observations, Geophys. Res. Lett., 21, 1117–1120, 1994.; Jian, L., Russell, C. T., Luhmann, J. G., and Skoug, R. M.: Properties of stream interactions at one AU during 1995–2004, Solar Phys., 239, 337–392, 2006.; Kaiser, M. L., Kucera, T. A., Davila, J. M., St. Cyr, O. C., Guhathakurta, M., and Christian, E.: The STEREO mission: An introduction, Space Sci. Rev., 136, 5–16, 2008.; Kallenbach, R., Geiss, J., Gloeckler, G., and von Steiger, R.: Pick-up ion measurements in the heliosphere – a review, Astrophys. Space Sci., 274, 97–114, 2000.; Klecker, B., Bogdanov, A. T., Galvin, A. T

 

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