Is There Still Something Left That Gravity Probe B Can Measure? by Lorenzo Iorio

“…We apply our results to the past spaceborne Gravity Probe B (GP-B) mission by finding a secular rate of its spin’s declination <inline-formula> <math display="inline"> <semantics> <mi>δ</mi> </semantics> </math> </inline-formula> which may be as large as ≲30–40<inline-formula> <math display="inline"> <semantics> <mrow> <mspace width="0.166667em"></mspace> <mi>milliarcseconds</mi> <mspace width="0.166667em"></mspace> <mi>per</mi> <mspace width="0.166667em"></mspace> <mi>year</mi> <mspace width="0.166667em"></mspace> <mfenced separators="" open="(" close=")"> <mi>mas</mi> <mspace width="0.166667em"></mspace> <msup> <mi>yr</mi> <mrow> <mo>−</mo> <mn>1</mn> </mrow> </msup> </mfenced> </mrow> </semantics> </math> </inline-formula>, depending on the initial orbital phase <inline-formula> <math display="inline"> <semantics> <msub> <mi>f</mi> <mn>0</mn> </msub> </semantics> </math> </inline-formula>. …”
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Geodetic precession and frame dragging observed far from massive objects and close to a gyroscope by Trenčevski Kostadin, Celakoska Emilija

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Constraints on ultralight axions, vector gauge bosons, and unparticles from geodetic and frame-dragging measurements by Tanmay Kumar Poddar

“…Abstract The geodetic and frame-dragging effects are the direct consequences of the spacetime curvature near Earth which can be probed from the Gravity probe B (GP-B) satellite. The satellite result matches quite well with Einstein’s general relativistic result. …”
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Constraints on Non-Standard Gravitomagnetism by the Anomalous Perihelion Precession of the Planets by Luis Acedo

“…We find that an extra component of the gravitomagnetic field not predicted by General Relativity could explain the reported anomalies without conflicting with the Gravity Probe B experiment and the orbits of the geodynamics satellites.…”
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Post-Newtonian limit: second-order Jefimenko equations by David Pérez Carlos, Augusto Espinoza, Andrew Chubykalo

“…The Heaviside field is known in general relativity as Lense-Thirring effect or gravitomagnetism (The Heaviside field is the gravitational analogous of the magnetic field in the electromagnetic theory, its existence was proved employing the Gravity Probe B launched by NASA (See, for example, [11, 12]). …”
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Tests of Lorentz Symmetry in the Gravitational Sector by Aurélien Hees, Quentin G. Bailey, Adrien Bourgoin, Hélène Pihan-Le Bars, Christine Guerlin, Christophe Le Poncin-Lafitte

“…Furthermore, we discuss the latest constraints obtained within this formalism including analyses of the following measurements: atomic gravimetry, Lunar Laser Ranging, Very Long Baseline Interferometry, planetary ephemerides, Gravity Probe B, binary pulsars, high energy cosmic rays, … In addition, we propose a combined analysis of all these results. …”
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Constraining gravitational and cosmological parameters with astrophysical data by Mao, Yi, Ph. D. Massachusetts Institute of Technology

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Minimum Number of Observation Points for LEO Satellite Orbit Estimation by OWL Network by Maru Park, Jung Hyun Jo, Sungki Cho, Jin Choi, Chun-Hwey Kim, Jang-Hyun Park, Hong-Suh Yim, Young-Jun Choi, Hong-Kyu Moon, Young-Ho Bae, Sun-Youp Park, Ji-Hye Kim, Dong-Goo Roh, Hyun-Jung Jang, Young-Sik Park, Min-Ji Jeong

“…In this study, the observed targets were Gravity Probe B, COSMOS 1455, COSMOS 1726, COSMOS 2428, SEASAT 1, ATV-5, and CryoSat-2 (all in LEO). …”
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