The Cassini Radio Science Investigations
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Cassini radio science gravitational wave ring occu↗
Engineering topics
Ambrosini, R.
Publications and source records attributed to Ambrosini, R..
Cassini Titan Radio Science
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Radio Frequency Instrument Subsystem (RFIS) Ultras↗
Search for Gravitational Wave Trains with the Spacecraft ULYSSES
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ULYSSESS gravitatinal wave mHz band Pearson method↗
Search for Gravitational Wave Trains with the Spacecraft Ulysses
We report on the search for periodic gravitational wave in the mHz band conducted with the spacecraft ULYSSES. Gravitational wave signals generally provide information about the distance of the source; ULYSSES' data have a.
gravitation galaxies: nuclei↗
Search for Gravitational Wave Trains with the Spacecraft ULYSSES
We report on the search for periodic gravitational wave in the mHz band conducted with the spacecraft ULYSSES.
gravitational wave trains↗
Doppler experiments with Cassini radio system
The radio system of the Cassini orbiter will include a K-alpha band downlink channel, mainly intended for telemetry. A K-alpha uplink has also been proposed to allow for a highly accurate gravitational wave experiment. The fourfold increase in frequency will reduce the plasma noise by a factor of 12 and will allow a Doppler accuracy better than 10 exp -15 for time scales of 10 exp 3 - 10 exp 4 s. Extensive Doppler measurements of the gravitational field of Saturn and its satellites can be performed, exploiting the induced change in the velocity of the spacecraft. Possible sources of low-frequency gravitational waves and errors in the Doppler link are discussed.
Comoretto, G.↗
The gravitational wave experiment
Since the optimum size of a gravitational wave detector is the wave length, interplanetary dimensions are needed for the mHz band of interest. Doppler tracking of Ulysses will provide the most sensitive attempt to date at the detection of gravitational waves in the low frequency band. The driving noise source is the fluctuations in the refractive index of interplanetary plasma. This dictates the timing of the experiment to be near solar opposition and sets the target accuracy for the fractional frequency change at 3.0 x 10 exp -14 for integration times of the order of 1000 sec. The instrumentation utilized by the experiment is distributed between the radio systems on the spacecraft and the seven participating ground stations of the Deep Space Network and Medicina. Preliminary analysis is available of the measurements taken during the Ulysses first opposition test.
Bertotti, B.↗