Tests of the gravitational redshift effect in space-born and ground-based experiments

2018 ◽  
Vol 24 (1) ◽  
pp. 31-48
Author(s):  
I.B. Vavilova ◽  
Keyword(s):  
Gravitational Redshift

The Equivalence Principle

2018 ◽  
Author(s):  
David M. Wittman
Keyword(s):  
General Relativity ◽  
Special Relativity ◽  
Equivalence Principle ◽  
Time Dilation ◽  
Gravitational Redshift ◽  
Coordinate Systems ◽  
Spacetime Metric

The equivalence principle is an important thinking tool to bootstrap our thinking from the inertial coordinate systems of special relativity to the more complex coordinate systems that must be used in the presence of gravity (general relativity). The equivalence principle posits that at a given event gravity accelerates everything equally, so gravity is equivalent to an accelerating coordinate system.This conjecture is well supported by precise experiments, so we explore the consequences in depth: gravity curves the trajectory of light as it does other projectiles; the effects of gravity disappear in a freely falling laboratory; and gravitymakes time runmore slowly in the basement than in the attic—a gravitational form of time dilation. We show how this is observable via gravitational redshift. Subsequent chapters will build on this to show how the spacetime metric varies with location.

scholarly journals Observational Constraints on the Surface Gravitational Redshift of a Neutron Star

2017 ◽  
Author(s):  
Masachika Iwai ◽  
Tadayasu Dotani ◽  
Masanobu Ozaki ◽  
Yoshitomo Maeda ◽  
Hideyuki Mori ◽  
...  
Keyword(s):  
Neutron Star ◽  
Gravitational Redshift ◽  
Observational Constraints

All classical predictions of general relativity from special relativistic Hamiltonian dynamics

2018 ◽  
Vol 33 (29) ◽  
pp. 1850169
Author(s):  
J. H. Field
Keyword(s):  
General Relativity ◽  
Euclidean Space ◽  
Hamiltonian Dynamics ◽  
Gravitational Redshift ◽  
Newtonian Mechanics ◽  
Light Deflection ◽  
Schwarzschild Metric ◽  
Related Literature ◽  
General Relativistic ◽  
Relativistic Hamiltonian Dynamics

Previous special relativistic calculations of gravitational redshift, light deflection and Shapiro delay are extended to include perigee advance. The three classical, order G, post-Newtonian predictions of general relativity as well as general relativistic light-speed-variation are therefore shown to be also consequences of special relativistic Newtonian mechanics in Euclidean space. The calculations are compared to general relativistic ones based on the Schwarzschild metric equation, and related literature is critically reviewed.

scholarly journals Optical approach to gravitational redshift

2011 ◽  
Vol 336 (2) ◽  
pp. 347-355
Author(s):  
Yong Gwan Yi
Keyword(s):  
Gravitational Redshift

A quantum mechanical interpretation of gravitational redshift of electromagnetic wave

Optik ◽  
2018 ◽  
Vol 174 ◽  
pp. 636-641 ◽  
Author(s):  
Donald C. Chang
Keyword(s):  
Electromagnetic Wave ◽  
Gravitational Redshift ◽  
Quantum Mechanical ◽  
Mechanical Interpretation

An improved approach for testing gravitational redshift via spacecraft based three frequency links combination

2021 ◽  
Author(s):  
Ziyu Shen ◽  
Wen-Bin Shen ◽  
Lin He ◽  
Tengxu Zhang ◽  
Zhan Cai
Keyword(s):  
International Space Station ◽  
Gravitational Potential ◽  
Natural Science ◽  
Space Station ◽  
Gravitational Redshift ◽  
New Approach ◽  
International Space ◽  
Hardware Requirement ◽  
Ground Station ◽  
Gravity Probe

<p>We propose a new approach for testing the gravitational redshift based on frequency signals transmission between a spacecraft and a ground station. By a combination of one uplink signal and two downlink signals, the gravitational redshift can be tested at about 6.5×10<sup>-6</sup> level for a GNSS satellite (the signals’ frequencies are about 1.2~1.6 GHz), and about 2.2×10<sup>-6</sup> level for the International Space Station (the signals’ frequencies are up to 14.7 GHz), under the assumption that the clock accuracy is about 10<sup>-17</sup> level. For better desinged cases the accuracy of gravitational redshift test can be improved to several parts in 10<sup>-8</sup> level (the signals’ frequencies are about 8~12 GHz). Compared to the scheme of Gravity Probe-A (GP-A) experiment conducted in1976, the new approach does not require any onboard signal transponders, and the frequency values of the three links can be quite arbitrarily given. As the hardware requirement is reduced, a number of spacecrafts could be chosen as candidates for a gravitational redshift experiment. This approach could also be used in gravitational potential determination, which has prospective applications in geodesy. This study is supported by National Natural Science Foundation of China (NSFC) (grant Nos. 42030105, 41721003, 41631072, 41874023, 41804012), Space Station Project (2020)228, and Natural Science Foundation of Hubei Province(grant No. 2019CFB611).</p>

Gravitational Redshift Test Using Rb Clocks Of Eccentric GPS Satellites

2021 ◽  
Author(s):  
Loghman Fathollahi ◽  
Falin Wu ◽  
Barbara Pongracic
Keyword(s):  
Gravitational Redshift ◽  
Gps Satellites

Red shift of photon frequency in the gravitational field

2021 ◽  
Author(s):  
Jin Tong Wang ◽  
Jiangdi Fan ◽  
Aaron X. Kan
Keyword(s):  
General Relativity ◽  
Quantum Mechanics ◽  
Gravitational Field ◽  
Gravitational Potential ◽  
Schrodinger Equation ◽  
Red Shift ◽  
Relativity Theory ◽  
Gravitational Redshift ◽  
General Relativity Theory ◽  
Photon Frequency

It has been well known that there is a redshift of photon frequency due to the gravitational potential. Scott et al. [Can. J. Phys. 44 (1966) 1639, https://doi.org/10.1139/p66-137 ] pointed out that general relativity theory predicts the gravitational redshift. However, using the quantum mechanics theory related to the photon Hamiltonian and photon Schrodinger equation, we calculate the redshift due to the gravitational potential. The result is exactly the same as that from the general relativity theory.

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