R. Frey
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View article: Improving cosmological reach of a gravitational wave observatory using Deep Loop Shaping
Improving cosmological reach of a gravitational wave observatory using Deep Loop Shaping Open
Improved low-frequency sensitivity of gravitational wave observatories would unlock study of intermediate-mass black hole mergers and binary black hole eccentricity and provide early warnings for multimessenger observations of binary neutr…
View article: Advanced LIGO detector performance in the fourth observing run
Advanced LIGO detector performance in the fourth observing run Open
On May 24, 2023, the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO), joined by the Advanced Virgo and KAGRA detectors, began the fourth observing run for a two-year-long dedicated search for gravitational waves. The LI…
View article: Searching High And Low For Exotic Particles At NUTEV
Searching High And Low For Exotic Particles At NUTEV Open
The E815 (NuTeV) neutrino experiment at Fermilab has conducted two direct searches for neutral heavy leptons by using a dedicated instrumented decay channel. The first search probed the existence of neutral heavy leptons possessing masses …
View article: Advanced LIGO detector performance in the fourth observing run
Advanced LIGO detector performance in the fourth observing run Open
On May 24th, 2023, the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO), joined by the Advanced Virgo and KAGRA detectors, began the fourth observing run for a two-year-long dedicated search for gravitational waves. The …
View article: Prospects for neutron star parameter estimation using gravitational waves from f modes associated with magnetar flares
Prospects for neutron star parameter estimation using gravitational waves from f modes associated with magnetar flares Open
Magnetar vibrational modes are theorized to be associated with energetic X-ray flares. Regular searches for gravitational waves from these modes have been performed by Advanced LIGO (Laser Interferometer Gravitational-wave Observatory) and…
View article: Automated evaluation of environmental coupling for Advanced LIGO gravitational wave detections
Automated evaluation of environmental coupling for Advanced LIGO gravitational wave detections Open
The extreme sensitivity required for direct observation of gravitational waves by the Advanced LIGO detectors means that environmental noise is increasingly likely to contaminate Advanced LIGO gravitational wave signals if left unaddressed…
View article: Automated Evaluation of Environmental Coupling for Advanced LIGO Gravitational Wave Detections
Automated Evaluation of Environmental Coupling for Advanced LIGO Gravitational Wave Detections Open
The extreme sensitivity required for direct observation of gravitational waves by the Advanced LIGO detectors means that environmental noise is increasingly likely to contaminate Advanced LIGO gravitational wave signals if left unaddressed…
View article: Broadband Quantum Enhancement of the LIGO Detectors with Frequency-Dependent Squeezing
Broadband Quantum Enhancement of the LIGO Detectors with Frequency-Dependent Squeezing Open
Quantum noise imposes a fundamental limitation on the sensitivity of interferometric gravitational-wave detectors like LIGO, manifesting as shot noise and quantum radiation pressure noise. Here, we present the first realization of frequenc…
View article: Prospects for Neutron Star Parameter Estimation using Gravitational Waves from f-modes Associated with Magnetar Flares
Prospects for Neutron Star Parameter Estimation using Gravitational Waves from f-modes Associated with Magnetar Flares Open
Magnetar vibrational modes are theorized to be associated with energetic X-ray flares. Regular searches for gravitational waves from these modes have been performed by Advanced LIGO and Advanced Virgo, with no detections so far. Presently,…
View article: Correlated 1–1000 Hz magnetic field fluctuations from lightning over Earth-scale distances and their impact on gravitational wave searches
Correlated 1–1000 Hz magnetic field fluctuations from lightning over Earth-scale distances and their impact on gravitational wave searches Open
International audience
View article: Correlated 1-1000 Hz magnetic field fluctuations from lightning over earth-scale distances and their impact on gravitational wave searches
Correlated 1-1000 Hz magnetic field fluctuations from lightning over earth-scale distances and their impact on gravitational wave searches Open
We report Earth-scale distance magnetic correlations from lightning strokes in the frequency range 1-1000 Hz at several distances ranging from 1100 to 9000 km. Noise sources which are correlated on Earth-scale distances can affect future s…
View article: LIGO detector characterization in the second and third observing runs
LIGO detector characterization in the second and third observing runs Open
\n The characterization of the Advanced LIGO detectors in the second and third observing runs has increased the sensitivity of the instruments, allowing for a higher number of detectable gravitational-wave signals, and provided confirmatio…
View article: Environmental noise in advanced LIGO detectors
Environmental noise in advanced LIGO detectors Open
The sensitivity of the Advanced LIGO detectors to gravitational waves can be
\naffected by environmental disturbances external to the detectors themselves.
\nSince the transition from the former initial LIGO phase, many improvements have
\…
View article: The International Linear Collider: Report to Snowmass 2021
The International Linear Collider: Report to Snowmass 2021 Open
The International Linear Collider (ILC) is on the table now as a new global energy-frontier accelerator laboratory taking data in the 2030s. The ILC addresses key questions for our current understanding of particle physics. It is based on …
View article: Strategy for Understanding the Higgs Physics: The Cool Copper Collider
Strategy for Understanding the Higgs Physics: The Cool Copper Collider Open
A program to build a lepton-collider Higgs factory, to precisely measure the couplings of the Higgs boson to other particles, followed by a higher energy run to establish the Higgs self-coupling and expand the new physics reach, is widely …
View article: Improving astrophysical parameter estimation via offline noise subtraction for Advanced LIGO
Improving astrophysical parameter estimation via offline noise subtraction for Advanced LIGO Open
The Advanced LIGO detectors have recently completed their second observation run successfully. The run lasted for approximately 10 months and led to multiple new discoveries. The sensitivity to gravitational waves was partially limited by …
View article: A silicon-tungsten electromagnetic calorimeter with integrated electronics for the International Linear Collider
A silicon-tungsten electromagnetic calorimeter with integrated electronics for the International Linear Collider Open
We present an update of the development of an electromagnetic calorimeter for the Silicon Detector concept for a future linear electron-positron collider. Mechanical progress for a full barrel calorimeter that provides a more complete basi…
View article: Identification and mitigation of narrow spectral artifacts that degrade searches for persistent gravitational waves in the first two observing runs of Advanced LIGO
Identification and mitigation of narrow spectral artifacts that degrade searches for persistent gravitational waves in the first two observing runs of Advanced LIGO Open
Searches are under way in Advanced LIGO and Virgo data for persistent gravitational waves from continuous sources, e.g. rapidly rotating galactic neutron stars, and stochastic sources, e.g. relic gravitational waves from the Big Bang or su…
View article: Advanced Virgo Status
Advanced Virgo Status Open
The Advanced Virgo project was funded in 2009 with the aim of improving the sensitivity of the Virgo interferometric detector for gravitational waves by a factor of ten, which corresponds to an increase in the detection rate by about three…
View article: The Potential of the ILC for Discovering New Particles
The Potential of the ILC for Discovering New Particles Open
This paper addresses the question of whether the International Linear Collider has the capability of discovering new particles that have not already been discovered at the CERN Large Hadron Collider. We summarize the various paths to disco…
View article: Physics Case for the 250 GeV Stage of the International Linear Collider
Physics Case for the 250 GeV Stage of the International Linear Collider Open
The International Linear Collider is now proposed with a staged machine design, with the first stage at 250 GeV with a luminosity goal of 2 ab$^{-1}$. In this paper, we review the physics expectations for this machine. These include precis…