Nielsen, E.; del Pozo, C. F.; Williams, P. J. S.: VHF coherent radar signals from the E region ionosphere and the relationship to electron drift velocity and ion acoustic velocity. Journal Geophysical Research 107 (A6), 1012 (2002)
Timofeev, E. E.; Vallinkoski, M. K.; Pollari, P.; Kangas, J.; Virdi, T.; Williams, P. J. S.; Nielsen, E.: Flow angle dependence of 1-m ionospheric plasma wave turbulence for near-threshold radar echo electric field. Journal Geophysical Research 107 (A10), 1286 (2002)
Timofeev, E. E.; Vallinkoski, M. K.; Pollari, P.; Kangas, J.; Virdi, T.; Williams, P. J. S.; Nielsen, E.: Correction to: Flow angle dependence of 1-m ionospheric plasma wave turbulence for near-threshold radar echo electric field. Journal Geophysical Research 107 (A12), 1450 (2002)
Kosch, M. J.; Nielsen, E.: Statistical average estimates of high latitude field-aligned currents from the STARE and SABRE coherent VHF radar system. Advances in Space Research 27, pp. 1239 - 1244 (2001)
Nielsen, E.: Direct experimental test of Joule heating damping of a Pc5 pulsation using the STARE radar system. Journal Geophysical Research 106, pp. 25835 - 25845 (2001)
Nielsen, E.; Honary, F.: Observations of ionospheric flows and particle precipitation following a Sudden Commencement. Annales Geophysicae 18 (8), pp. 908 - 917 (2000)
Barbin, Y.; Kofman, W.; Nielsen, E.; Hagfors, T.; Seu, R.; Picardi, G.; Svedhem, H.: The CONSERT instrument for the ROSETTA mission. Advances in Space Research 24, pp. 1115 - 1126 (1999)
Nielsen, E.; Bruns, M.; Pardowitz, I.; Perplies, H.; Bemmann, L.; Janhunen, P.; Huuskonen, A.: STARE: Observations of a field-aligned line current. Geophysical Research Letters 26, pp. 21 - 24 (1999)
Barr, R.; Stubbe, P.; Rietveld, M. T.; Nielsen, E.: Enhanced ELF wave generation efficiency using `O' mode HF heating in the ionosphere: An instrumental explanation. Geophysical Research Letters 25, p. 3489 (1998)
Kosch, M. J.; Hagfors, T.; Nielsen, E.: A new digital all-sky imager experiment for optical auroral studies in conjunction with the Scandinavian twin auroral radar experiment. Review of Scientific Instruments 69, pp. 578 - 584 (1998)
Kosch, M. J.; Scourfield, M. W. J.; Nielsen, E.: A self-consistent explanation for a plasma flow vortex associated with the brightening of an auroral arc. Journal Geophysical Research 103, pp. 29383 - 29391 (1998)
Nielsen, E.; Hagfors, T.: Plans for a new Rio-Imager experiment in Northern Scandinavia. Journal of Atmospheric and Solar-Terrestrial Physics 59, pp. 939 - 949 (1997)
Mishra, S. P.; Nielsen, E.: Response of ionospheric electric fields to variations in the interplanetary field. Annales Geophysicae 14 (8), pp. 794 - 802 (1996)
Chen, P.-R.; Yi, L.; Nielsen, E.: Variations of the mean phase velocity of 1-m ionospheric plasma waves with the plasma electron temperature. Journal Geophysical Research 100, pp. 1647 - 1652 (1995)
Elphinstone, R. D.; Hearn, D. J.; Cogger, L. L.; Murphree, J. S.; Singer, H.; Sergeev, V.; Mursula, K.; Klumpar, D. M.; Reeves, G. D.; Johnson, M.et al.; Ohtani, S.; Potemra, T. A.; Sandahl, I.; Nielsen, E.; Persson, M.; Opgenoorth, H.; Newell, P. T.; Feldstein, Y. I.: Observations in the vicinity of substorm onset: Implications for the substorm process. Journal Geophysical Research 100, pp. 7937 - 7969 (1995)
Greenwald, R. A.; Baker, K. B.; Dudeney, J. R.; Pinnock, M.; Jones, T. B.; Thomas, E. C.; Villain, J.-P.; Cerisier, J.-C.; Senior, C.; Hanuise, C.et al.; Hunsucker, R. D.; Sofko, G.; Koehler, J.; Nielsen, E.; Pellinen, R.; Walker, A. D. M.; Saot, N.; Yamagishi, H.: DARN/SUPERDARN: A global view of the dynamics of high-latitude convection. Space Science Reviews 71, pp. 761 - 796 (1995)
Kosch, M. J.; Nielsen, E.: Coherent radar estimates of average high-latitude ionospheric Joule heating. Journal Geophysical Research 100, pp. 12201 - 12215 (1995)
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
Using unique observational data and computer simulations, the MPS scientist is striving to understand the incredibly hot temperatures in the solar corona.
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.