ar X iv : g r - qc / 0 51 10 20 v 1 4 N ov 2 00 5 Gravity tests and the Pioneer anomaly Marc -
نویسنده
چکیده
Experimental tests of gravity performed in the solar system show a good agreement with general relativity. The latter is however challenged by the Pioneer anomaly which might be pointing at some modification of gravity law at ranges of the order of the size of the solar system. We introduce a metric extension of general relativity which, while preserving the equivalence principle, modifies the coupling between curvature and stress tensors and, therefore, the metric solution in the solar system. The “post-Einsteinian extension” replaces Newton gravitation constant by two running coupling constants, which depend on the scale and differ in the sectors of traceless and traced tensors, so that the metric solution is characterized by two gravitation potentials. The extended theory has the capability to preserve compatibility with gravity tests while accounting for the Pioneer anomaly. It can also be tested by new experiments or, maybe, by having a new look at data of already performed experiments. PACS: 04.20.-q, 04.80.Cc LPTENS-05/35
منابع مشابه
ar X iv : g r - qc / 0 41 10 77 v 1 1 5 N ov 2 00 4 The Pioneer Anomaly : The Data , its Meaning , and a Future Test
The radio-metric Doppler tracking data from the Pioneer 10/11 spacecraft, from between 20-70 AU, yields an unambiguous and independently confirmed anomalous blue shift drift of at = (2.92± 0.44)× 10−18 s/s2. It can be interpreted as being due to a constant acceleration of aP = (8.74± 1.33)× 10−8 cm/s2 directed towards the Sun. No systematic effect has been able to explain the anomaly, even thou...
متن کاملar X iv : g r - qc / 0 51 10 26 v 1 6 N ov 2 00 5 Gravitational solution to the Pioneer 10 / 11 anomaly
A fully relativistic modified gravitational theory including a fifth force skew symmetric field is fitted to the Pioneer 10/11 anomalous acceleration. The theory allows for a variation with distance scales of the gravitational constant G, the fifth force skew symmetric field coupling strength ω and the mass of the skew symmetric field μ = 1/λ. A fit to the available anomalous acceleration data ...
متن کاملar X iv : g r - qc / 0 41 10 77 v 2 2 2 N ov 2 00 4 The Pioneer Anomaly : The Data , its Meaning , and a Future Test
The radio-metric Doppler tracking data from the Pioneer 10/11 spacecraft, from between 20-70 AU, yields an unambiguous and independently confirmed anomalous blue shift drift of at = (2.92± 0.44)× 10−18 s/s2. It can be interpreted as being due to a constant acceleration of aP = (8.74± 1.33)× 10−8 cm/s2 directed towards the Sun. No systematic effect has been able to explain the anomaly, even thou...
متن کاملar X iv : g r - qc / 0 51 10 40 v 1 8 N ov 2 00 5 Canonical gauge - invariant variables for scalar perturbations in synchronous coordinates
Under an appropriate change of the perturbation variable LifshitzKhalatnikov propagation equations for the scalar perturbation reduce to d’Alembert equation. The change of variables is based on the Darboux transform.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005