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273 papers · 1 filter

gr-qc2026

Late-Transition Interacting Thawer Dark Energy: Model Definition and Benchmark Consistency Tests

Slava G. Turyshev, Diogo H. F. de Souza

We formulate the late-transition interacting thawer (LTIT) as a late-activating, variable-coupling realization of coupled quintessence in which a canonical scalar field couples con…

gr-qc2026

Improved constraints on modified Newtonian gravity from Cassini radio tracking data

R. S. Park, A. Hees, B. Famaey +2

We report an updated constraint on the Solar System quadrupole parameter , which encodes the external field effect predicted by modified gravity versions of the modified Newto…

gr-qc2025★ 2 cited

Fundamental Physics in 2025: Status, Decisive Targets, and Path Forward

Slava G. Turyshev

Fundamental physics today is best defined operationally: it is the program of identifying the microscopic degrees of freedom, symmetries, and dynamical laws that (i) reproduce the…

gr-qc2025

Fundamental Noise and Gravitational-Wave Sensitivity of the Laser Interferometer Lunar Antenna (LILA)

Teviet Creighton, Philippe Lognonné, Mark P. Panning +3

The Earth's Moon presents a uniquely advantageous environment for detecting astrophysical gravitational waves (GWs) in the frequency range of millihertz to decihertz. Unlike Terres…

gr-qc2025★ 1 cited

Modulation-assisted time-delay interferometric ranging for LISA

Jean-Baptiste Bayle, Martin Staab, Samuel P. Francis +3

Laser Interferometer Space Antenna LISA represents the next frontier in gravitationalwave GW astronomy targeting the detection of millihertz gravitational signals Central to LISAs…

gr-qc2024★ 5 cited

Searching for new physics in the solar system with tetrahedral spacecraft formations

Slava G. Turyshev, Sheng-wey Chiow, Nan Yu

Tetrahedral configurations of spacecraft on unperturbed heliocentric orbits allow for highly precise observations of small spatial changes in the gravitational field, especially th…

gr-qc2024★ 15 cited

Photon Counting Interferometry to Detect Geontropic Space-Time Fluctuations with GQuEST

Sander M. Vermeulen, Torrey Cullen, Daniel Grass +8

The GQuEST (Gravity from the Quantum Entanglement of Space-Time) experiment uses tabletop-scale Michelson laser interferometers to probe for fluctuations in space-time. We present…

gr-qc2024★ 2 cited

Search for gravitationally lensed interstellar transmissions

Slava G. Turyshev

We explore interstellar light transmission facilitated by gravitational lensing, focusing on axially-symmetric lensing configurations where the transmitter, lens, and receiver are…

gr-qc2023★ 8 cited

Gravitational lensing for interstellar power transmission

Slava G. Turyshev

We investigate the propagation of monochromatic electromagnetic waves through multiple, well-separated, monopole gravitational lenses in the thin-lens/eikonal approximation. For th…

gr-qc2023★ 17 cited

How to Detect an Astrophysical Nanohertz Gravitational-Wave Background

Bence Bécsy, Neil J. Cornish, Patrick M. Meyers +93

Analysis of pulsar timing data have provided evidence for a stochastic gravitational wave background in the nHz frequency band. The most plausible source of such a background is th…

gr-qc2023★ 8 cited

Spherical harmonics representation of the gravitational phase shift

Slava G. Turyshev, Viktor T. Toth

We investigate the general relativistic phase of an electromagnetic wave as it propagates in the gravitational field of the Earth, which is modeled as an isolated, weakly aspherica…

gr-qc2023★ 76 cited

Searching for continuous Gravitational Waves in the second data release of the International Pulsar Timing Array

M. Falxa, S. Babak, P. T. Baker +123

The International Pulsar Timing Array 2nd data release is the combination of datasets from worldwide collaborations. In this study, we search for continuous waves: gravitational wa…

gr-qc2022★ 39 cited

Accurate characterization of the stochastic gravitational-wave background with pulsar timing arrays by likelihood reweighting

Sophie Hourihane, Patrick Meyers, Aaron Johnson +2

An isotropic stochastic background of nanohertz gravitational waves creates excess residual power in pulsar-timing-array datasets, with characteristic inter-pulsar correlations des…

gr-qc2022★ 8 cited

Testing the gravitational redshift with an inner Solar System probe: the VERITAS case

Fabrizio De Marchi, Gael Cascioli, Todd Ely +4

The NASA Discovery-class mission VERITAS, selected in June 2021, will be launched towards Venus after 2027. In addition to the science instrumentation that will build global founda…

gr-qc2022★ 35 cited

Constraining the Stochastic Gravitational Wave Background with Photometric Surveys

Yijun Wang, Kris Pardo, Tzu-Ching Chang +1

The detection of the Stochastic Gravitational Wave Background (SGWB) is essential for understanding black hole populations, especially for supermassive black hole binaries. The rec…

gr-qc2022★ 51 cited

Assessing the data-analysis impact of LISA orbit approximations using a GPU-accelerated response model

Michael L. Katz, Jean-Baptiste Bayle, Alvin J. K. Chua +1

The analysis of gravitational wave (GW) datasets is based on the comparison of measured time series with theoretical templates of the detector's response to a variety of source par…

gr-qc2022★ 32 cited

Time delay interferometry without clock synchronisation

Olaf Hartwig, Jean-Baptiste Bayle, Martin Staab +3

Time-delay interferometry (TDI) is a data processing technique for LISA designed to suppress the otherwise overwhelming laser noise by several orders of magnitude. It is widely bel…

gr-qc2022★ 3 cited

Toolkit for Scalar Fields in Universes with finite-dimensional Hilbert Space

Oliver Friedrich, Ashmeet Singh, Olivier Doré

The holographic principle suggests that the Hilbert space of quantum gravity is locally finite-dimensional. Motivated by this point-of-view, and its application to the observable U…

gr-qc2021★ 53 cited

Detection and characterization of instrumental transients in LISA Pathfinder and their projection to LISA

Quentin Baghi, Natalia Korsakova, Jacob Slutsky +3

The LISA Pathfinder (LPF) mission succeeded outstandingly in demonstrating key technological aspects of future space-borne gravitational-wave detectors, such as the Laser Interfero…

gr-qc2021★ 13 cited

Navigating stellar wobbles for imaging with the solar gravitational lens

Slava G. Turyshev, Viktor T. Toth

The solar gravitational lens (SGL) offers unique capabilities for high-resolution imaging of faint, distant objects, such as exoplanets. In the near future, a spacecraft carrying a…

gr-qc2021★ 25 cited

Enhanced Frequency noise suppression for LISA by combining cavity and arm locking control systems

Jobin Thomas Valliyakalayil, Andrew J. H. Sutton, Robert E. Spero +2

This paper presents a novel method for laser frequency stabilisation in the Laser Interferometer Space Antenna (LISA) mission by locking a laser to two stable length references - t…

gr-qc2021★ 62 cited

The NANOGrav 12.5-year data set: Search for Non-Einsteinian Polarization Modes in theGravitational-Wave Background

Zaven Arzoumanian, Paul T. Baker, Harsha Blumer +68

We search NANOGrav's 12.5-year data set for evidence of a gravitational wave background (GWB) with all the spatial correlations allowed by general metric theories of gravity. We fi…

gr-qc2021★ 42 cited

Non-local parameter degeneracy in the intrinsic space of gravitational-wave signals from extreme-mass-ratio inspirals

Alvin J. K. Chua, Curt J. Cutler

Extreme-mass-ratio inspirals will be prized sources for the upcoming space-based gravitational-wave observatory LISA. The hunt for these is beset by many open theoretical and compu…

gr-qc2021★ 7 cited

Efficient trace-free decomposition of symmetric tensors of arbitrary rank

Viktor T. Toth, Slava G. Turyshev

Symmetric trace-free tensors are used in many areas of physics, including electromagnetism, relativistic celestial mechanics and geodesy, as well as in the study of gravitational r…