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Possible effects are considered which would be caused by a hypothetical superstrong interaction of photons or massive bodies with single gravitons of the graviton background. If full cosmological redshift magnitudes are caused by the…

天体物理学 · 物理学 2015-06-24 Michael A. Ivanov

We study the gravitational Faraday rotation, on linearly polarized light rays emitted by a pulsar, orbiting another compact object. We relate the rotation angle to the orbital phase of the emitting pulsar, as well as to other parameters…

天体物理学 · 物理学 2008-11-26 Matteo Luca Ruggiero , Angelo Tartaglia

We reexamine non-Einsteinian effects observable in the orbital motion of low-orbit artificial Earth satellites. The motivations for doing so are twofold: (i) recent theoretical studies suggest that the correct theory of gravity might…

广义相对论与量子宇宙学 · 物理学 2011-08-11 Thibault Damour , Gilles Esposito-Farese

Extragalactic proper motions can reveal a variety of cosmological and local phenomena over a range of angular scales. These include observer-induced proper motions, such as the secular aberration drift caused by the solar acceleration about…

宇宙学与河外天体物理 · 物理学 2018-10-16 Jeremy Darling , Alexandra Truebenbach , Jennie Paine

Atomic wave interferometers are tied to a telescope pointing towards a faraway star in a nearly free falling satellite. Such a device is sensitive to the acceleration and the rotation relatively to the local inertial frame and to the tidal…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Philippe Tourrenc , Marie-Christine Angonin-Willaime , Xavier Ovido

The orbital Lense-Thirring precession is considered in the context of constraints for weak-field General Relativity involving the cosmological constant $\Lambda$. It is shown that according to the current accuracy of satellite measurements…

广义相对论与量子宇宙学 · 物理学 2020-10-06 A. Stepanian , Sh. Khlghatyan

As gravity is a long-range force, one might a priori expect the Universe's global matter distribution to select a preferred rest frame for local gravitational physics. At the post-Newtonian approximation, two parameters suffice to describe…

广义相对论与量子宇宙学 · 物理学 2009-12-30 Thibault Damour , Gilles Esposito-Farese

Two types of cosmology are discussed and their implications for the observed cmb (cosmic microwave background radiation) dipole are described. Theorems useful for understanding the cause for a cmb dipole are presented. Since the present…

天体物理学 · 物理学 2007-05-23 Yukio Tomozawa

Trajectories of photons of cosmic microwave background (CMB) from the surface of last scattering to us could be deflected by extremely low frequency primordial gravitational wave (PGW). With large scale structure (LSS) producing a smoothing…

高能天体物理现象 · 物理学 2024-06-25 Wenshuai Liu

The gravitomagnetic field generated by a rotating sphere is usually calculated from the ideal dipole model. However, for a sphere with a homogeneous mass density, this model is not generally valid. Trying to obtain a more accurate value of…

综合物理 · 物理学 2012-01-17 Jacob Biemond

This is a somewhat extended version of the original July 93 report. It is proved that the cosmological density perturbation is associated with a peculiar velocity field. This allows a simple formulation of cosmological perturbation theory,…

天体物理学 · 物理学 2010-11-01 Marco Bruni , David H. Lyth

General Relativity has had tremendous successes on both theoretical and experimental fronts for over a century by now. However, the theory contents are far from being exhausted. Only very recently, with gravitational wave detection from…

综合物理 · 物理学 2017-07-19 M. -N. Célérier , N. O. Santos , V. H. Satheeshkumar

We propose here an explanation of the Pioneer anomaly which is not in conflict with the cartography of the solar system. In our model, the spaceship does not suffer any extra acceleration but follows the trajectory predicted by standard…

广义相对论与量子宇宙学 · 物理学 2009-09-03 Antonio F. Ranada , Alfredo Tiemblo

We present a new measurement of the Lense-Thirring effect on the orbits of the geodetic satellites LAGEOS, LAGEOS II and LARES. This secular precession is a general relativity effect produced by the gravitomagnetic field of the Earth…

广义相对论与量子宇宙学 · 物理学 2019-10-07 David M. Lucchesi , Massimo Visco , Roberto Peron , Massimo Bassan , Giuseppe Pucacco , Carmen Pardini , Luciano Anselmo , Carmelo Magnafico

A passing gravitational wave causes a deflection in the apparent astrometric positions of distant stars. The effect of the speed of the gravitational wave on this astrometric shift is discussed. A stochastic background of gravitational…

广义相对论与量子宇宙学 · 物理学 2020-01-29 Deyan P. Mihaylov , Christopher J. Moore , Jonathan Gair , Anthony Lasenby , Gerard Gilmore

The origin of cosmic magnetic (B) fields remains an open question. It is generally believed that very weak primordial B fields are amplified by dynamo processes, but it appears unlikely that the amplification proceeds fast enough to account…

宇宙学与河外天体物理 · 物理学 2015-05-13 Ioannis Contopoulos , Dimitris M. Christodoulou , Demosthenes Kazanas , Denise C. Gabuzda

While many observations support the validity of Einstein's general relativity as the theory of gravity, there are yet many that suggest the presence of new physics. In order to explain the high-redshift supernovae Ia observations together…

天体物理学 · 物理学 2008-11-26 R. G. Vishwakarma

The total flux of outgoing radiation in a strong gravitational field decreases due to backscattering if the sources are close to an apparent horizon. It can cause detectable changes in the shape of signals. Backscattering could well be of…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Edward Malec , Niall O'Murchadha

We specify the four kinds of rotational cosmologies that are avaliable in Theoretical Cosmology. NASA spacecrafts has suffered from three anomalies. The Pioneers spacecrafts were decelerated, and their spin when not disturbed, was…

综合物理 · 物理学 2017-07-26 Marcelo Samuel Berman , Fernando de Mello Gomide

After an introduction on phenomena due to spin and mass-energy currents on clocks and photons, we review the 1995-2001 measurements of the gravitomagnetic field of Earth and Lense-Thirring effect obtained by analyzing the orbits of the two…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Ignazio Ciufolini