Solar Physics

, Volume 256, Issue 1–2, pp 393–408 | Cite as

In situ Observations of CIRs on STEREO, Wind, and ACE During 2007 – 2008

  • G. M. Mason
  • M. I. Desai
  • U. Mall
  • A. Korth
  • R. Bucik
  • T. T. von Rosenvinge
  • K. D. Simunac
Open Access
STEREO SCIENCE RESULTS AT SOLAR MINIMUM

Abstract

During the 2007 and 2008 solar minimum period, STEREO, Wind, and ACE observed numerous Corotating Interaction Regions (CIRs) over spatial separations that began with all the spacecraft close to Earth, through STEREO separation angles of ∼ 80 degrees in the fall of 2008. Over 35 CIR events were of sufficient intensity to allow measurement of He and heavy ion spectra using the IMPACT/SIT, EPACT/STEP and ACE/ULEIS instruments on STEREO, Wind, and ACE, respectively. In addition to differences between the spacecraft expected on the basis of simple corotation, we observed several events where there were markedly different time-intensity profiles from one spacecraft to the next. By comparing the energetic particle intensities and spectral shapes along with solar wind speed we examine the extent to which these differences are due to temporal evolution of the CIR or due to variations in connection to a relatively stable interaction region. Comparing CIRs in the 1996 – 1997 solar minimum period vs. 2007 – 2008, we find that the 2007 – 2008 period had many more CIRs, reflecting the presence of more high-speed solar wind streams, whereas 1997 had almost no CIR activity.

Keywords

Acceleration of particles Sun: abundances Solar wind Interplanetary medium Cosmic rays Shock waves 

References

  1. Baker, D.N.: 1995, Surv. Geophys. 16, 331 CrossRefADSGoogle Scholar
  2. Desai, M.I., Marsden, R.G., Sanderson, T.R., Balogh, A., Forsyth, R.J., Gosling, J.T.: 1998, J. Geophys. Res. 103, 2003. CrossRefADSGoogle Scholar
  3. Fisk, L.A., Jokipii, J.R.: 1999, Space Sci. Rev. 89, 115. CrossRefADSGoogle Scholar
  4. Fisk, L.A., Lee, M.A.: 1980, Astrophys. J. 237, 620. CrossRefADSGoogle Scholar
  5. Forsyth, R.J., Marsch, E.: 1999, Space Sci. Rev. 89, 7. CrossRefADSGoogle Scholar
  6. Galvin, A.B., Kistler, L.M., Popecki, M.A., Farrugia, C.J., Simunac, K.D.C., Ellis, L., Möbius, E., Lee, M.A., Boehm, M., Carroll, J., et al.: 2008, Space Sci. Rev. 136, 437. CrossRefADSGoogle Scholar
  7. Giacalone, J., Jokipii, J.R., Kóta, J.: 2002, Astrophys. J. 573, 845. CrossRefADSGoogle Scholar
  8. Gloeckler, G.: 1999, Space Sci. Rev. 89, 91. CrossRefADSGoogle Scholar
  9. Gloeckler, G., Hovestadt, D., Fisk, L.A.: 1979, Astrophys. J. 230, L191. CrossRefADSGoogle Scholar
  10. Gopalswamy, N., Yashiro, S., Michalek, G., Kaiser, M.L., Howard, R.A., Reames, D.V., Leske, R.L., von Rosenvinge, T.T.: 2002, Astrophys. J. 72, L103. CrossRefADSGoogle Scholar
  11. Gosling, J.T., Pizzo, V.J.: 1999, Space Sci. Rev. 89, 21. CrossRefADSGoogle Scholar
  12. Horbury, T.S., Schmidt, J.M.: 1999, Space Sci. Rev. 89, 61. CrossRefADSGoogle Scholar
  13. Jian, L., Russell, C.T., Luhmann, J., Skoug, R.M.: 2006, Solar Phys. 239, 337. CrossRefADSGoogle Scholar
  14. Leske, R.A., Mewaldt, R.A., Mason, G.M., Cohen, C.M.S., Cummings, A.C., Davis, A.J., Labrador, A.W., Miyasaka, H., Stone, E.C., Wiedenbeck, M.E., et al.: 2008, In: Li, G., Hu, Q., Verkhoglyadova, O., Zank, G.P., Lin, R.P., Luhmann, J. (eds.) Particle Acceleration and Transport in the Heliosphere and Beyond: 7th Annual International Astrophysics Conf., AIP Conf. Proc. 1039, 131. Google Scholar
  15. Mason, G.M., Sanderson, T.R.: 1999, Space Sci. Rev. 89, 77. CrossRefADSGoogle Scholar
  16. Mason, G.M., Mazur, J.E., Dwyer, J.R., Reames, D.V., von Rosenvinge, T.T.: 1997, Astrophys. J. 486, L149. CrossRefADSGoogle Scholar
  17. Mason, G.M., Gold, R.E., Krimigis, S.M., Andrews, J.E.M.B., Daley, K.A., Dwyer, J.R., Heuerman, K.F., James, T.L., Kennedy, M.J., LeFevere, T., et al.: 1998, Space Sci. Rev. 86, 409. CrossRefADSGoogle Scholar
  18. Mason, G.M., von Steiger, R., Decker, R.B., Desai, M.I., Dwyer, J.R., Fisk, L.A., Gloeckler, G., Gosling, J.T., Hilchenbach, M., Kallenbach, R., et al.: 1999, Space Sci. Rev. 89, 327. CrossRefADSGoogle Scholar
  19. Mason, G.M., Korth, A., Walpole, P.H., Desai, M.I., von Rosenvinge, T.T., Shuman, S.A.: 2008a, Space Sci. Rev. 136, 257. CrossRefADSGoogle Scholar
  20. Mason, G.M., Leske, R.A., Desai, M.I., Cohen, C.M.S., Dwyer, J.R., Mazuk, S., Mewaldt, R.A., Gold, R.E., Krimigis, S.M.: 2008b, Astrophys. J. 678, 1458. CrossRefADSGoogle Scholar
  21. McComas, D.J., Bame, S.J., Barker, P., Feldman, W.C., Phillips, J.L., Riley, P., Griffee, J.W.: 1998, Space Sci. Rev. 86, 563. CrossRefADSGoogle Scholar
  22. McCracken, K.G., Dreschhoff, G.A.M., Zeller, E.J., Smart, D.F., Shea, M.A.: 2001, J. Geophys. Res. 106, 21585. CrossRefADSGoogle Scholar
  23. Ogilvie, K.W., Chornay, D.J., Fritzenreiter, R.J., Hunsaker, F., Keller, J., Lobell, J., Miller, G., Scudder, J.D., Sittler, E.C. Jr., Torbert, R.B., et al.: 1995, Space Sci. Rev. 71, 55. CrossRefADSGoogle Scholar
  24. Reedy, R.C.: 1996, In: Balasubrahmanyan, K.S., Kiel, S.L., Smartt, R.N. (eds.) Solar Drivers of Interplanetary and Terrestrial Disturbances CS-95, Astron. Soc. Pac., San Francisco, 429. Google Scholar
  25. Richardson, I.G.: 2004, Space Sci. Rev. 111, 267. CrossRefADSGoogle Scholar
  26. Richardson, I.G., Barbier, L.M., Reames, D.V., von Rosenvinge, T.T.: 1993, J. Geophys. Res. 98, 13. CrossRefADSGoogle Scholar
  27. Sanderson, T.R., Lin, R.P., Larson, D.E., McCarthy, M.P., Parks, G.K., Bosqued, J.M., Lormant, N., Ogilvie, K., Lepping, R.P., Szabo, A., et al.: 1998, J. Geophys. Res. 103, 17235. CrossRefADSGoogle Scholar
  28. Scholer, M.: 1999, Space Sci. Rev. 89, 105. CrossRefADSGoogle Scholar
  29. Simnett, G.M., Sayle, K.A., Roelof, E.C., Tappin, S.J.: 1994, Geophys. Res. Lett. 21, 1561. CrossRefADSGoogle Scholar
  30. Van Hollebeke, M.A.I., Ma Sung, L.S., McDonald, F.B.: 1975, Solar Phys. 41, 189. CrossRefADSGoogle Scholar
  31. von Rosenvinge, T.T., Barbier, L.M., Karsch, J., Liberman, R., Madden, M.P., Nolan, T., Reames, D.V., Ryan, L., Singh, S., Trexel, H., et al.: 1995, Space. Sci. Rev. 71, 155. CrossRefADSGoogle Scholar

Copyright information

© The Author(s) 2009

Authors and Affiliations

  • G. M. Mason
    • 1
  • M. I. Desai
    • 2
  • U. Mall
    • 3
  • A. Korth
    • 3
  • R. Bucik
    • 3
  • T. T. von Rosenvinge
    • 4
  • K. D. Simunac
    • 5
  1. 1.The Johns Hopkins University Applied Physics LaboratoryLaurelUSA
  2. 2.Southwest Research InstituteSan AntonioUSA
  3. 3.Max-Planck-Institut für SonnensystemforschungKatlenburg-LindauGermany
  4. 4.NASA/Goddard Space Flight CenterGreenbeltUSA
  5. 5.Physics DepartmentUniv. of New HampshireDurhamUSA

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