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View article: The Doppler boosted LISA response to gravitational waves
The Doppler boosted LISA response to gravitational waves Open
The future space-based gravitational wave observatory LISA is expected to detect massive black hole binaries (MBHBs) with high signal-to-noise ratios (SNRs), ranging up to thousands. Such high-precision observations require accurate modeli…
View article: Search for QCD Coupled Axion Dark Matter with Data from the MICROSCOPE Space Experiment
Search for QCD Coupled Axion Dark Matter with Data from the MICROSCOPE Space Experiment Open
Axion dark matter coupled via QCD induces a nonzero differential acceleration between test masses of different composition. Tests of the equivalence principle, like the recent MICROSCOPE space mission, are sensitive to such a signal. We us…
View article: Optimal design of interpolation methods for time-delay interferometry
Optimal design of interpolation methods for time-delay interferometry Open
Time-delay interferometry (TDI) suppresses laser frequency noise by forming linear combinations of time-shifted interferometric measurements. The time-shift operation is implemented by interpolating discretely sampled data. To enable in-ba…
View article: Probing the axion–photon coupling with space-based gravitational wave detectors
Probing the axion–photon coupling with space-based gravitational wave detectors Open
We propose a simple modification of space-based gravitational wave (GW) detector optical benches which would enable the measurement of vacuum birefringence of light induced by axion dark matter through its coupling to electromagnetism. Spe…
View article: Violation of the equivalence principle induced by oscillating rest mass and transition frequency, and its detection in atom interferometers
Violation of the equivalence principle induced by oscillating rest mass and transition frequency, and its detection in atom interferometers Open
We present a theoretical investigation of the expected experimental signals produced by freely falling atoms with time oscillating mass and transition frequency. These oscillations could be produced in a variety of models, in particular, m…
View article: Improved modeling for dark photon detection with dish antennas
Improved modeling for dark photon detection with dish antennas Open
A vector dark matter candidate, also known as dark photon, would induce an oscillating electric field through kinetic mixing. One detection strategy uses a spherical reflector to focus the induced emission at its center of curvature. First…
View article: On the tension between the radial acceleration relation and Solar system quadrupole in modified gravity MOND
On the tension between the radial acceleration relation and Solar system quadrupole in modified gravity MOND Open
Modified Newtonian dynamics (MOND), postulating a breakdown of Newtonian mechanics at low accelerations, has considerable success at explaining galaxy kinematics. However, the quadrupole of the gravitational field of the Solar system (SS) …
View article: Searching for large dark matter clumps using the Galileo Satnav clock variations
Searching for large dark matter clumps using the Galileo Satnav clock variations Open
This study presents bounds on transient variations of fundamental constants, with typical timescales ranging from minutes to months, using clocks in space. The underlying phenomenology describing such transient variations relies on models …
View article: Ranging sensor fusion in LISA data processing: Treatment of ambiguities, noise, and onboard delays in LISA ranging observables
Ranging sensor fusion in LISA data processing: Treatment of ambiguities, noise, and onboard delays in LISA ranging observables Open
Interspacecraft ranging is crucial for the suppression of laser frequency noise via time-delay interferometry (TDI). So far, the effects of onboard delays and ambiguities on the Laser Interferometer Space Antenna (LISA) ranging observables…
View article: On the tension between the Radial Acceleration Relation and Solar System quadrupole in modified gravity MOND
On the tension between the Radial Acceleration Relation and Solar System quadrupole in modified gravity MOND Open
Modified Newtonian Dynamics (MOND), postulating a breakdown of Newtonian mechanics at low accelerations, has considerable success at explaining galaxy kinematics. However, the quadrupole of the gravitational field of the Solar System (SS) …
View article: Constraining a Companion of the Galactic Center Black Hole Sgr A*
Constraining a Companion of the Galactic Center Black Hole Sgr A* Open
We use 23 yr of astrometric and radial velocity data on the orbit of the star S0-2 to constrain a hypothetical intermediate-mass black hole orbiting the massive black hole Sgr A* at the Galactic center. The data place upper limits on varia…
View article: Search for vector dark matter in microwave cavities with Rydberg atoms
Search for vector dark matter in microwave cavities with Rydberg atoms Open
We propose a novel experiment to search for dark matter, based on the\napplication of an electric field inside a microwave cavity and electrometry\nusing Rydberg atoms. We show that this kind of experiment could be extremely\nuseful for de…
View article: Ranging Sensor Fusion in LISA Data Processing: Treatment of Ambiguities, Noise, and On-Board Delays in LISA Ranging Observables
Ranging Sensor Fusion in LISA Data Processing: Treatment of Ambiguities, Noise, and On-Board Delays in LISA Ranging Observables Open
Interspacecraft ranging is crucial for the suppression of laser frequency noise via time-delay interferometry (TDI). So far, the effects of on-board delays and ambiguities on the LISA ranging observables were neglected in LISA modelling an…
View article: End-to-end simulation and analysis pipeline for LISA
End-to-end simulation and analysis pipeline for LISA Open
The data produced by the future space-based millihertz gravitational-wave detector LISA will require nontrivial pre-processing, which might affect the science results. It is crucial to demonstrate the feasibility of such processing algorit…
View article: Evidence of a Decreased Binary Fraction for Massive Stars within 20 milliparsecs of the Supermassive Black Hole at the Galactic Center
Evidence of a Decreased Binary Fraction for Massive Stars within 20 milliparsecs of the Supermassive Black Hole at the Galactic Center Open
We present the results of the first systematic search for spectroscopic binaries within the central 2 × 3 arcsec 2 around the supermassive black hole at the center of the Milky Way galaxy. This survey is based primarily on over a decade of…
View article: Evidence of a Decreased Binary Fraction for Massive Stars Within 20 Milliparsecs of the Supermassive Black Hole at the Galactic Center
Evidence of a Decreased Binary Fraction for Massive Stars Within 20 Milliparsecs of the Supermassive Black Hole at the Galactic Center Open
We present the results of the first systematic search for spectroscopic binaries within the central 2 x 3 arcsec$^2$ around the supermassive black hole at the center of the Milky Way galaxy. This survey is based primarily on over a decade …
View article: What’s in LISA data? End-to-end simulation and analysis pipeline for LISA
What’s in LISA data? End-to-end simulation and analysis pipeline for LISA Open
International audience
View article: The Swansong of the Galactic Center Source X7: An Extreme Example of Tidal Evolution near the Supermassive Black Hole
The Swansong of the Galactic Center Source X7: An Extreme Example of Tidal Evolution near the Supermassive Black Hole Open
We present two decades of new high-angular-resolution near-infrared data from the W. M. Keck Observatory that reveal extreme evolution in X7, an elongated dust and gas feature, presently located half an arcsecond from the Galactic Center s…
View article: The Swansong of the Galactic Center Source X7: An Extreme Example of Tidal Evolution near the Supermassive Black Hole
The Swansong of the Galactic Center Source X7: An Extreme Example of Tidal Evolution near the Supermassive Black Hole Open
We present two decades of new high-angular-resolution near-infrared data from the W. M. Keck Observatory that reveal extreme evolution in X7, an elongated dust and gas feature, presently located half an arcsecond from the Galactic Center s…
View article: Relativistic contributions to the rotation of Mars
Relativistic contributions to the rotation of Mars Open
Context. The orientation and rotation of Mars can be described by a set of Euler angles (longitude, obliquity, and rotation angles) and estimated from radioscience data (tracking of orbiters and landers), which can then be used to infer th…
View article: INPOP Planetary ephemerides and applications in the frame of the BepiColombo mission including new constraints on the graviton mass and dilaton parameters
INPOP Planetary ephemerides and applications in the frame of the BepiColombo mission including new constraints on the graviton mass and dilaton parameters Open
We present here the new results obtained with the INPOP planetary ephemerides and BepiColombo radio-science simulations. We give new constraints for the classic General Relativity tests in terms of violation of the PPN parameters $β$ and $…
View article: Relativistic contributions to Mars rotation
Relativistic contributions to Mars rotation Open
Context: The orientation and rotation of Mars, which can be described by a set of Euler angles, is estimated from radioscience data and is then used to infer Mars internal properties. The data are analyzed using a modeling expressed within…
View article: Relativistic variations in Mars rotation
Relativistic variations in Mars rotation Open
<p><strong>Introduction</strong></p> <p>The orientation of Mars with respect to its orbit can be described with a set of Euler angles (longitude &#968;, obliquity &#949;, and rotation &#966;). The …
View article: Time-delay interferometry without clock synchronization
Time-delay interferometry without clock synchronization Open
International audience
View article: Constraining massless dilaton theory at Solar system scales with the planetary ephemeris INPOP
Constraining massless dilaton theory at Solar system scales with the planetary ephemeris INPOP Open
We expose the phenomenology of the massless dilaton theory in the Solar\nsystem for a non universal quadratic coupling between the scalar field which\nrepresents the dilaton, and the matter. Modified post-Newtonian equations of\nmotion of …
View article: Time delay interferometry without clock synchronisation
Time delay interferometry without clock synchronisation Open
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 believed that TDI can only be applied once all phase or freque…
View article: Exploring the foundations of the physical universe with space tests of the equivalence principle
Exploring the foundations of the physical universe with space tests of the equivalence principle Open
We present the scientific motivation for future space tests of the equivalence principle, and in particular the universality of free fall, at the 10 − 17 level or better. Two possible mission scenarios, one based on quantum technologies, t…
View article: The local dark sector
The local dark sector Open
We speculate on the development and availability of new innovative propulsion techniques in the 2040s, that will allow us to fly a spacecraft outside the Solar System (at 150 AU and more) in a reasonable amount of time, in order to directl…
View article: Searching for Dark Matter with an Optical Cavity and an Unequal-Delay Interferometer
Searching for Dark Matter with an Optical Cavity and an Unequal-Delay Interferometer Open
We propose a new type of experiment that compares the frequency of a clock (an ultrastable optical cavity in this case) at time t to its own frequency some time t-T earlier, by "storing" the output signal (photons) in a fiber delay line. I…