Interplanetary plasma turbulence and the Doppler detection of a gravitational wave background

Details Interplanetary plasma turbulence and the Doppler detection of a gravitational wave background Interplanetary plasma turbulence and the Doppler detection of a gravitational wave background

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...157..346d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 157, no. 2, March 1986, p. 346-352.

Astronomy and Astrophysics

Astrophysics

3

Gravitational Waves, Interplanetary Medium, Plasma Turbulence, Solar Wind, Astronomical Models, Background Radiation, Doppler Effect, Signal To Noise Ratios, Spectrum Analysis

Scientific paper

The authors discuss the role of the interplanetary plasma turbulence in the planned experiments for the detection of a gravitational wave background by means of a Doppler tracking of interplanetary spacecraft. They have in mind, in particular, the usual radio link configuration with a single frequency uplink and a double frequency downlink. They construct a new observable quantity (a linear combination of the S- and X-band Doppler shift) which strongly increases the signal to noise ratio at frequencies smaller than the reciprocal of an Earth-spacecraft light time. Next they employ a previously developed model of interplanetary turbulence to calculate the minimum energy spectral density of the background which can be detected against plasma noise. They point out the importance of the low frequency part of the spectrum, where the sensitivity of the experiment increases and the limits obtained for the gravitational background energy density should be more interesting.

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