Estimating Radiative Momentum Transfer Through a Thermal Analysis of the Pioneer Anomaly

Bertolami, Orfeu; Francisco, Frederico; Gil, P. J. S.; Páramos, Jorge

doi:10.1007/s11214-009-9589-3

Cited by 37 publications

(56 citation statements)

References 15 publications

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“…It was asserted that recoil of IR photons could account for 35% to 57% of the canonical value [38]. This result was considered as providing "a clear indication of the possible thermal origin of the so-called Pioneer anomaly".…”

Section: The Perplexing Pioneer Anomalymentioning

confidence: 99%

Astrophysics and Dark Matter Theory

Meessen¹

2017

JMP

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Space-Time Quantization implies that the cosmic dark matter gas is subjected to pressure effects. We prove this by accounting for the mass-density distribution of dark matter in galactic halos. It can be directly deduced from observed rotation curves and coincides with theoretical predictions for dark matter atmospheres in hydrostatic equilibrium. Through embedding, the pressure of the cosmic dark matter gas prevents also the gravitational collapse of the Oort cloud, globular star clusters and cosmic filaments. The Sun has only a very small dark matter atmosphere, but observations confirm that dark matter is orbiting around the Sun. Other facts are explained by planetary dark matter disks. Space-Time quantization accounts also for dark matter-electron interaction, which allowed already for direct detection of galactic dark matter particles.

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Section: The Perplexing Pioneer Anomalymentioning

confidence: 99%

Astrophysics and Dark Matter Theory

Meessen¹

2017

JMP

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“…[229][230][231][232] The fruits of such hard and heroic efforts were not long in coming. Indeed, by analyzing the new data, conviction that suitably designed thermal models could likely explain the PA 219,[232][233][234][235][236][237][238][239] began to make its way. In 2012, it was shown 240 that an appropriate model of the recoil force associated with an anisotropic emission of thermal radiation off the spacecraft is able to accommodate about 80% of the unexplained acceleration plaguing the telemetry of both the Pioneer probes as far as its magnitude, temporal behavior, and direction are concerned.…”

Section: The Pioneer Anomalymentioning

confidence: 99%

Gravitational anomalies in the solar system?

Iorio

2015

Int. J. Mod. Phys. D

100

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Mindful of the anomalous perihelion precession of Mercury discovered by U. Le Verrier in the second half of the nineteenth century and its successful explanation by A. Einstein with his General Theory of Relativity in the early years of the twentieth century, discrepancies among observed effects in our Solar system and their theoretical predictions on the basis of the currently accepted laws of gravitation applied to known matter-energy distributions have the potential of paving the way for remarkable advances in fundamental physics. This is particularly important now more than ever, given that most of the universe seems to be made of unknown substances dubbed Dark Matter and Dark Energy. Should this not be directly the case, Solar system's anomalies could anyhow lead to advancements in either cumulative science, as shown to us by the discovery of Neptune in the first half of the nineteenth century, and technology itself. Moreover, investigations in one of such directions can serendipitously enrich the other one as well. The current status of some alleged gravitational anomalies in the Solar system is critically reviewed. They are: a) Possible anomalous advances of planetary perihelia; b) Unexplained orbital residuals of a recently discovered moon of Uranus (Mab); c) The lingering unexplained secular increase of the eccentricity of the orbit of the Moon; d) The so-called Faint Young Sun Paradox; e) The secular decrease of the mass parameter of the Sun; f) The Flyby Anomaly; g) The Pioneer Anomaly; and h) The anomalous secular increase of the astronomical unit

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“…Although it can be argued that this simplicity and transparency was achieved at the expense of the accuracy of the method, a series of test cases were performed to demonstrate the robustness of the results [13,14]. These test cases validate our approach, as they show that, for reasonable assumptions, the possible lack of accuracy caused by our modeling approach is much smaller than the accuracy in the characterization of the acceleration itself.…”

Section: Motivationmentioning

confidence: 70%

“…The first results were published by our team in 2008 [13,14]. The estimate was performed using a method based in a distribution of point-like Lambertian and isotropic radiation sources.…”

Section: Thermal Effectsmentioning

confidence: 99%

An underestimated onboard generated recoil force contributing to the Pioneer anomaly

Schläppi

Altwegg

Riesen

et al. 2012

Advances in Space Research

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We present an improved method to compute the radiative momentum transfer in the Pioneer 10 & 11 spacecraft that takes into account both diffusive and specular reflection. The method allows for more reliable results regarding the thermal acceleration of the deep-space probes, confirming previous findings. A parametric analysis is performed in order to set an upper and lower-bound for the thermal acceleration and its evolution with time.

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Estimating Radiative Momentum Transfer Through a Thermal Analysis of the Pioneer Anomaly

Cited by 37 publications

References 15 publications

Astrophysics and Dark Matter Theory

Astrophysics and Dark Matter Theory

Gravitational anomalies in the solar system?

An underestimated onboard generated recoil force contributing to the Pioneer anomaly

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