Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Peter, Edenhofer"'
Publikováno v:
Planetary and Space Science. 55:1886-1895
The signal strength of the Huygens Probe Channel B transmission to the Cassini Orbiter was monitored during the Probe descent through Titan's atmosphere on 14 January 2005. A model of the Probe motion during the mission was constructed to include Pro
Autor:
Wlodek, Kofman, Alain, Herique, Yves, Barbin, Jean-Pierre, Barriot, Valérie, Ciarletti, Stephen, Clifford, Peter, Edenhofer, Charles, Elachi, Christelle, Eyraud, Jean-Pierre, Goutail, Essam, Heggy, Laurent, Jorda, Jérémie, Lasue, Anny-Chantal, Levasseur-Regourd, Erling, Nielsen, Pierre, Pasquero, Frank, Preusker, Pascal, Puget, Dirk, Plettemeier, Yves, Rogez, Holger, Sierks, Christoph, Statz, Hakan, Svedhem, Iwan, Williams, Sonia, Zine, Jakob, Van Zyl
Publikováno v:
Science (New York, N.Y.). 349(6247)
The Philae lander provides a unique opportunity to investigate the internal structure of a comet nucleus, providing information about its formation and evolution in the early solar system. We present Comet Nucleus Sounding Experiment by Radiowave Tra
Autor:
Jean Pierre Goutail, Alain Herique, Charles Elachi, Holger Sierks, Pascal Puget, Jérémie Lasue, Laurent Jorda, Yves Rogez, Wlodek Kofman, Dirk Plettemeier, Christoph Statz, Iwan P. Williams, Christelle Eyraud, Pierre Pasquero, Stephen M. Clifford, Frank Preusker, Håkan Svedhem, Jakob van Zyl, Essam Heggy, Jean-Pierre Barriot, Valérie Ciarletti, Yves Barbin, Erling Nielsen, Peter Edenhofer, Sonia Zine, Anny Chantal Levasseur-Regourd
Publikováno v:
Science
Science, American Association for the Advancement of Science, 2015, 349 (6247), pp.aab0639. ⟨10.1126/science.aab0639⟩
Science, 2015, 349 (6247), pp.aab0639. ⟨10.1126/science.aab0639⟩
Science, American Association for the Advancement of Science, 2015, 349 (6247), pp.aab0639. ⟨10.1126/science.aab0639⟩
Science, 2015, 349 (6247), pp.aab0639. ⟨10.1126/science.aab0639⟩
International audience; The Philae lander provides a unique opportunity to investigate the internal structure of a comet nucleus, providing information about its formation and evolution in the early solar system. We present Comet Nucleus Sounding Exp
Autor:
Peter Edenhofer, I.V. Chashei, V.K. Rudash, A. I. Efimov, Michael K. Bird, Dirk Plettemeier, V. E. Andreev
Publikováno v:
Advances in Space Research. 35:2189-2194
Measurements of solar wind velocity have been derived from simultaneous coronal sounding observations of radio amplitude scintillations at both S-band and X-band during the solar conjunction of the Ulysses spacecraft in August 1991. The signal amplit
Autor:
Dirk Plettemeier, A. I. Efimov, L. N. Samoznaev, Michael K. Bird, R. Wohlmuth, L. A. Lukanina, Peter Edenhofer, I. V. Chashei
Publikováno v:
Advances in Space Research. 36:1448-1453
Coronal sounding experiments were carried out using the S-band signals of the Galileo spacecraft during the period of high solar activity in 1999–2000. The parameter studied in this work is the frequency of the downlink carrier signal, which was re
Autor:
Peter Edenhofer, L. N. Samoznaev, A. I. Efimov, Michael K. Bird, V. E. Andreev, Dirk Plettemeier, R. Wohlmuth, I. V. Chashei
Publikováno v:
Astronomy Reports. 46:579-590
Radio sounding experiments on of the solar plasma were carried out by the GALILEO spacecraft using S-band (2295 MHz) signals in 1995–1996 a period of minimum solar activity. Equatorial regions at heliocentric distances of 7–80 solar radii were st
Autor:
V. E. Andreev, A. I. Efimov, Michael K. Bird, Peter Edenhofer, Dirk Plettemeier, R. Wohlmuth, L. N. Samoznaev, I. V. Chashei
Publikováno v:
Advances in Space Research. 30:447-452
Radio frequency fluctuations have been recorded using the Galileo carrier signal during the spacecraft's solar conjunctions. On these occasions the solar proximate point along the radio ray path to Earth ranged from 7 to 80 R⊙. Regions of low-speed
Autor:
Peter Edenhofer, A. I. Efimov, Dirk Plettemeier, Michael K. Bird, R. Wohlmuth, L. N. Samoznaev, V. E. Andreev
Publikováno v:
Advances in Space Research. 30:453-458
Coronal radio sounding experiments with spacecraft near solar conjunction show a steady tendency toward enhanced radio frequency fluctuations during the ingress phase with respect to the egress phase. This behavior can be explained by the higher mean
Autor:
Peter Edenhofer, Robert A. Preston, R. Dutta-Roy, William M. Folkner, G. L. Tyler, Luciano Iess, Michael K. Bird, Dirk Plettemeier, R. Wohlmuth, M. Heyl, Sami W. Asmar, David H. Atkinson, Michael Allison
Publikováno v:
Space Science Reviews. 104:613-640
A Doppler Wind Experiment (DWE) will be performed during the Titan atmospheric descent of the ESA Huygens Probe. The direction and strength of Titan's zonal winds will be determined with an accuracy better than 1 m s−1 from the start of mission at
Autor:
P. Janardhan, A. I. Efimov, Michael K. Bird, Martin Pätzold, J. Karl, V. K. Rudash, Dirk Plettemeier, Peter Edenhofer, R. Wohlmuth
Publikováno v:
Advances in Space Research. 26:785-788
Radio remote-sensing techniques have shown that the spectrum of irregularities of both the electron density and magnetic field are spatially anisotropic. New experimental data on the electron density irregularities have been obtained from simultaneou