Mann, G.; Classen, H. T.; Keppler, E.; Roelof, E. C.: On electron acceleration at CIR related shock waves. Astronomy and Astrophysics 391, pp. 749 - 756 (2002)
Heber, B.; Keppler, E.; Marsden, R.; Tranquille, C.; Blake, B. J.; Fränz, M.: The Evolution of the anomalous cosmic ray oxygen spectra during U}lysses slow descent in 1995 to 1998: {COSPIN/LET} and {EPAC observations. Space Science Reviews 97, pp. 363 - 366 (2001)
Heber, B.; Keppler, E.; Marsden, R.-G.; Tranquille, C.; Blake, B.; Fränz, M.: The evolution of the anomalous cosmic ray oxygen spectra from 1995 to 1998: Ulysses observations. Space Science Reviews 97, pp. 363 - 366 (2001)
Classen, H.-T.; Mann, G.; Forsyth, R. J.; Keppler, E.: Low frequency plasma turbulence and higher energy particles at CIR-related shock waves. Astronomy and Astrophysics 347, pp. 313 - 320 (1999)
Fränz, M.; Keppler, E.; Lauth, U.; Reuss, M. K.; Mason, G. M.; Mazur, J. E.: Energetic particle abundances at CIR shocks. Geophysical Research Letters 26 (1), pp. 17 - 20 (1999)
Kunow, H.; Lee, M. A.; Forsyth, R. J.; Heber, B.; Horbury, T. S.; Keppler, E.; Kota, J.; Lou, Y.-Q.; McKibben, R. B.; Paizis, C.et al.; Potgieter Roelof, E. C.; Sanderson, T. R.; Simnett, G. M.; von Steiger, R.; Tsurutani, B. T.; Wimmer-Schweingruber, R. F.; Jokipii, J. R.: Corotating Interaction Regions at high latitudes. Space Science Reviews 89, pp. 221 - 268 (1999)
Mason, G. M.; Gloeckler, G.; Hilchenbach, M.; Kallenbach, R.; Keppler, E.: Origin, Injection and Acceleration of CIR Particles: Observations - Composition: Averages, Time Variations; Radial and Latitude Variations. Space Science Reviews 89 (1-2), pp. 351 - 359 (1999)
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.; Keppler, E.; Klecker, B.; Kunow, H.; Mann, G.; Richardson, I. G.; Sanderson, T. R.; Simnett, G. M.; Wang, Y.-M.; Wimmer-Schweingruber, R. F.; Fränz, M.; Mazur, J. E.: Origin, injection, and acceleration of CIR particles: Observations. Space Science Reviews 89, pp. 327 - 367 (1999)
Classen, H. T.; Mann, G.; Keppler, E.: Particle acceleration efficiency and MHD characteristics of CIR-related shocks. Astronomy and Astrophysics 335, pp. 1101 - 1110 (1998)
Keppler, E.: What causes the variations of the peak intensity of CIR accelerated energetic ion fluxes? Annales Geophysicae 16 (12), pp. 1552 - 1556 (1998)
Keppler, E.: The acceleration of charged particles in Corotating Interaction Regions (CIR) - A review with particular emphasis on the Ulysses mission. Surveys in Geophysics 19, pp. 211 - 278 (1998)
Keppler, E.: The acceleration of charged particles in Corotating Interaction Regions (CIR) - A review with particular emphasis on the ULYSSES mission -. Mitt. a.d. MPI für Aeronomie (MPAE-W-813-98-04) (1998)
Blake, J. B.; Looper, M. D.; Keppler, E.; Heber, B.; Kunow, H.; Quenby, J. J.: Ulysses observations of short-period (( 30 days) modulation of the galactic cosmic rays. Geophysical Research Letters 24, pp. 671 - 674 (1997)
Fränz, M.; Burgess, D.; Keppler, E.; Reuss, M. K.; Blake, J. B.: Energetic particle anisotropies and remote magnetic connection at high solar latitudes. Advances in Space Research 19, pp. 855 - 858 (1997)
Krupp, N.; Keppler, E.; Seidel, R.; Woch, J.; Korth, A.; Cheng, A. F.; Hawkins III, S. E.; Lanzerotti, L. J.; Maclennan, C. G.; Dougherty, M. K.: Field-aligned particle streaming in the duskside high latitude Jovian magnetosphere. Advances in Space Research 20, pp. (2)225 - (2)228 (1997)
Seidel, R.; Keppler, E.; Krupp, N.; Woch, J.; Hawkins III, S. E.; Lanzerotti, L. J.; Dougherty, M. K.: Energetic electron beams in the duskside Jovian magnetosphere: Ulysses EPAC and HI-SCALE measurements. Planetary and Space Science 45, pp. 1473 - 1480 (1997)
Images from ESA’s Solar Orbiter offer the best look yet at a source region of the solar wind - and challenge our view of the continuous particle stream from the Sun.
Deciphering the magnetic origins of the Sun's hot corona: developing a framework for coronal heating by probing the elusive photosphere-corona connection
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For the first time, images of the Sun have been taken from a distance of only 77 million kilometres enabling a completely new view of our star possible.
In his doctoral thesis, Sudip Mandal investigated how special pressure waves help maintain temperatures of several million degrees in the outermost solar atmosphere.