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  1. No Access

    Chapter and Conference Paper

    Recent observations of PKS1830-211

    The discovery of a remarkably strong gravitational lens/Einstein ring in the flat-spectrum radio source PKS1830-211 was reported recently by Jauncey et al. (1991). For the past three years this source has been th...

    D. L. Jauncey, J. E. Reynolds, A. K. Tzioumis, E. M. Sadler… in Gravitational Lenses (1992)

  2. No Access

    Chapter and Conference Paper

    Dust distribution of comet P/Halley’s inner coma determined from the Giotto Radio-Science Experiment

    Measurements of the Giotto Radio-Science Experiment, consisting of the Doppler frequency shift and the intensity level of the X-band downlink signal of the Giotto spacecraft during Halley encounter, are analys...

    P. Edenhofer, M. K. Bird, J. P. Brenkle, H. Buschert… in Exploration of Halley’s Comet (1988)

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    Article

    The mean coronal magnetic field determined from HELIOS Faraday rotation measurements

    Coronal Faraday rotation of the linearly polarized carrier signals of the HELIOS spacecraft was recorded during the regularly occurring solar occultations over almost a complete solar cycle from 1975 to 1984. ...

    M. Pätzold, M. K. Bird, H. Volland, G. S. Levy, B. L. Seidel… in Solar Physics (1987)

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    Article

    White-light and radio sounding observations of coronal transients

    A concerted search for coronal transients was conducted with the ‘Solwind’ coronagraph during the solar occultations of the two Helios spacecraft in October/November 1979. The polarization angle and bandwidth ...

    M. K. Bird, H. Volland, R. A. Howard, M. J. Koomen, D. J. Michels… in Solar Physics (1985)

  5. No Access

    Chapter

    The Cross Sectional Magnetic Profile of a Coronal Transient

    The role of the magnetic field in a coronal mass ejection event has not been unequivocally defined, and may in fact be quite variable in view of the large variety of shapes and sizes of coronal transients. Mea...

    M. K. Bird, H. Volland, B. L. Seidel, C. T. Stelzried in Solar and Interplanetary Dynamics (1980)

  6. No Access

    Article

    Deflection of polarised radiation: relative phase delay technique

    THE weak equivalence principle states that the world line of a freely falling test particle is independent of its structure and composition. Until recently1,2, experiments designed to detect variations in the geo...

    BRIAN DENNISON, GARY MELNICK, MARTIN HARWIT, T. SATO, C. T. STELZRIED… in Nature (1978)

  7. No Access

    Article

    The quasi-stationary coronal magnetic field and electron density as determined from a Faraday rotation experiment

    Pioneer VI was launched into a circumsolar orbit on December 16, 1965, and was occulted by the sun in the latter half of November, 1968. During the occultation period, the 2292-MHz S-band telemetry carrier und...

    C. T. Stelzried, G. S. Levy, T. Sato, W. V. T. Rusch, J. E. Ohlson… in Solar Physics (1970)