Publications of T. Hagfors

Kildal, P.-S.; Baker, L. A.; Hagfors, T.: The Arecibo upgrading: Electrical design and expected performance of the dual-reflector feed system. Proc. IEEE 82, pp. 714 - 724 (1994)

Mishin, E.; Hagfors, T.: On heat flow contribution to plasma line frequency in the F region. Journal Geophysical Research 99 (A4), pp. 6537 - 6539 (1994)

Isham, B.; Hagfors, T.: Observations of the temporal and spatial development of induced and natural plasma lines during HF modification experiments at Arecibo using chirped incoherent scatter radar. Journal Geophysical Research 98 (A8), pp. 13605 - 13625 (1993)

Kildal, P. S.; Johansson, M.; Hagfors, T.; Giovanelli, R.: Analysis of a cluster feed for the Arecibo tri-reflector system using forward ray-tracing and aperture integration. IEEE Antennas and Propagation Magazine 41 (8), pp. 1019 - 1025 (1993)

Hagfors, T.; Schlegel, K.: Earth's ionosphere. In: The Century of Space Science, pp. 1559 - 1584 (Eds. Bleeker, J. A. M.; Geiss, J.; Huber, M. C. E.). Kluwer Academic Publ., Dordrecht (2001)

Hagfors, T.; Schlegel, K.: Earth's Ionosphere. In: The Century of Space Science (Eds. Bleeker, J. A. M.; Geiss, J.; Huber, M. C. E.). Kluwer Academic Publishers, Dordrecht, Netherlands (2001)

Hagfors, T.: Plasma fluctuations excited by charged particle motion and their detection by weak scattering of radio waves. In: Tech. Rpt. 97/53 on Incoherent Scatter: Theory, Practice and Science (collection of lectures given in Cargese, Corsica, 1995), pp. 1 - 32 (Ed. Alcaydé, D.). EISCAT Scientific Association, Kiruna, Sweden (1997)

Grill, M.; Honary, F.; Nielsen, E.; Hagfors, T.; Dekoulis, G.; Chapman, P.; Yamagishi, H.: A new imaging riometer based on mills cross technique. In: International Symposium on Communications Theory and Applications, 13 - 18 July 2003, pp. 26 - 31. HW communications Ltd (2003)

Hagfors, T.: Ground penetrating radar for planetary exploration. In: Remote Sensing Methodology for Earth Observation and Planetary Exploration, pp. 147 - 156 (Eds. Attema, E.; Schwehm, G.; Wilson, A.). ESA Publ. Div., Noordwijk (1998)

Kosch, M. J.; Hagfors, T.; Kohsiek, A.: Thermosphärische und mesosphärische neutrale Wind- und Temperaturmessungen mittels Fabry-Perot-Interferometer im Zusammenhang mit EISCAT. In: Kleinheubacher Berichte (1997), pp. 151 - 154. (1998)

Kosch, M. J.; Hagfors, T.; Kohsiek, A.; Rees, D.: The MPAE Fabry-Perot interferometer for neutral atmosphere and ionosphere interaction studies with EISCAT. In: XXIII General Assembly European Geophysical Society, Nice, France, 20-24 April. (1998)

Kosch, M. J.; Honary, F.; Stamatiou, N.; del Pozo, C.; Hagfors, T.: The morphology of auroral optical emissions, riometer absorption and energy of the precipitating particles. In: Proc. 25th Annual European Meeting on Atmospheric Studies by Optical Methods, Granada, Spain, 21-25 September 1998, pp. 50 - 53 (Eds. López-González, M. J.; López-Moreno, J. J.; López-Puertas, M.; López-Valverde, M. A.; Molina, A. et al.). Instituto de Astrofisico de Andalucia, Granada, Spain (1998)

Axford, W. I.; Hagfors, T.: 50 years of ionospheric research at the Max-Planck-Institut für Aeronomie. In: Modern Ionospheric Science, pp. 1 - 3 (Eds. Kohl, H.; Rüster, R.; Schlegel, K.). European Geophysical Society, Katlenburg-Lindau (1996)

Hagfors, T.: Neue Techniken der Astrophysik-Problemorientierte Planung-Entwicklung-Fachübergreifende Anwendung. In: Forschungsmanagement in der Physik (XIX), pp. 21 - 31. DPG, Bad Honnef (1995)

Kosch, M. J.; Kohsiek, A.; Schlegel, K.; Hagfors, T.: A new Fabry-Perot interferometer experiment for neutral atmosphere studies in conjunction with the EISCAT incoherent-backscatter radar system. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1997)

Kosch, M. J.; Hagfors, T.; Nielsen, E.: A new Digital All Sky Imager (DASI) experiment for optical auroral studies in conjunction with the STARE coherent radar system. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1996)

Nielsen, E.; Hagfors, T.: Spacecraft radar experiment for observations of the interior of a comet in the ROSETTA mission. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1995)

Nielsen, E.; Hagfors, T.; Kopka, H.; Trilling, D.: Thoughts on radio wave experiments for observations of the interior of comets in the international ROSETTA mission. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1995)

Culhane, J. L.; Hagfors, T.; Reid, G. C.; Southwood, D.; (eds.), E. T.-H.: Space Science Research in Norway - a Critial Evaluation. The Research Council of Norway, Oslo (1994)

Nielsen, E.; Axford, W. I.; Hagfors, T.; Kopka, H.; Armand, N. A.; Andrianov, V. A.; Shtern, D. J.; Breus, T.: The ``Long wavelength radar'' on the Mars-94 orbiter. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1994)