Conformal Cosmology and the Pioneer Anomaly

Abstract

We review the fundamental results of a new cosmological model, based on conformal gravity, and apply them to the analysis of the early data of the Pioneer anomaly. We show that our conformal cosmology can naturally explain the anomalous acceleration of the Pioneer 10 and 11 spacecraft, in terms of a local blueshift region extending around the solar system and therefore affecting the frequencies of the navigational radio signals exchanged between Earth and the spacecraft. On the contrary, conformal gravity corrections alone would not be able to account for dynamical effects of such magnitude to be capable of producing the observed Pioneer acceleration. By using our model, we explain the numerical coincidence between the value of the anomalous acceleration and the Hubble constant at the present epoch and also confirm our previous determination of the cosmological parameters gamma ~ 10^(-28) cm^(-1) and delta ~ 10^(-4) - 10^(-5). New Pioneer data are expected to be publicly available in the near future, which might enable more precise evaluations of these parameters.

24 pages, including 3 figures

References in corpus (20)

• Impact of a global quadratic potential on galactic rotation curves
• Model for gravity at large distances
• High precision thermal modeling of complex systems with application to the flyby and Pioneer anomaly
• The Energy Transfer Process in Planetary Flybys
• Thermal Analysis of the Pioneer Anomaly: A method to estimate radiative momentum transfer
• Support for temporally varying behavior of the Pioneer anomaly from the extended Pioneer 10 and 11 Doppler data sets
• On the recently determined anomalous perihelion precession of Saturn
• On the anomalous secular increase of the eccentricity of the orbit of the Moon
• Could the Pioneer anomaly have a gravitational origin?
• Solar system constraints on Rindler acceleration
• Study of the Pioneer Anomaly: A Problem Set
• Can the Pioneer anomaly be of gravitational origin? A phenomenological answer
• Testing Gravity in the Outer Solar System: Results from Trans-Neptunian Objects
• An Empirical Explanation of the Anomalous Increases in the Astronomical Unit and the Lunar Eccentricity
• Thermal recoil force, telemetry, and the Pioneer anomaly
• Solar system constraints on a Rindler-type extra-acceleration from modified gravity at large distances
• Independent analysis of the orbits of Pioneer 10 and 11
• The Pioneer Anomaly: Seeking an explanation in newly recovered data
• Cosmology in the Solar System: Pioneer effect is not cosmological
• Search for a Solution of the Pioneer Anomaly

Cited by in corpus (6)

• Gravitational Anomalies in the Solar System?
• Wormhole geometries in fourth-order conformal Weyl gravity
• Astrophysical Tests of Kinematical Conformal Cosmology in Fourth-Order Conformal Weyl Gravity
• Re-Examination of Globally Flat Space-Time
• Pioneer 10 and 11 Spacecraft Anomalous Acceleration in the light of the Nonsymmetric Kaluza-Klein (Jordan-Thiry) Theory
• On the possible onset of the Pioneer anomaly