The gravitational wave experiment

Details The gravitational wave experiment The gravitational wave experiment

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26as...92..431b&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 92, no. 2, Jan. 1992, p. 431-440.

Astronomy and Astrophysics

Astrophysics

12

Gravitational Waves, Interplanetary Medium, Solar Wind, Space Plasmas, Ulysses Mission, Deep Space, Energy Distribution, Relativistic Theory

Scientific paper

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.

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