Curt Cutler
A5064808409- Pulsars and Gravitational Waves Research
- Geophysics and Gravity Measurements
- Gamma-ray bursts and supernovae
- Radio Astronomy Observations and Technology
- Cosmology and Gravitation Theories
- Astrophysical Phenomena and Observations
- Advanced Frequency and Time Standards
- Geophysics and Sensor Technology
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Astronomical Observations and Instrumentation
- Computational Physics and Python Applications
- High-pressure geophysics and materials
- Black Holes and Theoretical Physics
- Solar and Space Plasma Dynamics
- Seismic Waves and Analysis
- Astronomy and Astrophysical Research
- Cold Atom Physics and Bose-Einstein Condensates
- Adaptive optics and wavefront sensing
- Astro and Planetary Science
- Seismic Imaging and Inversion Techniques
- Particle Accelerators and Free-Electron Lasers
- Magnetic confinement fusion research
- Galaxies: Formation, Evolution, Phenomena
- History and Developments in Astronomy
University of Toronto
2025
Jet Propulsion Laboratory
2014-2024
California Institute of Technology
2012-2024
European Space Research and Technology Centre
2021
Goddard Space Flight Center
2006-2019
National Institute for Space Research
2009
Max Planck Institute for Gravitational Physics
1998-2006
LIGO Scientific Collaboration
2005-2006
Weber State University
2006
University of Birmingham
2006
Following the selection of The Gravitational Universe by ESA, and successful flight LISA Pathfinder, Consortium now proposes a 4 year mission in response to ESA's call for missions L3. observatory will be based on three arms with six active laser links, between identical spacecraft triangular formation separated 2.5 million km. is an all-sky monitor offer wide view dynamic cosmos using Waves as new unique messengers unveil Universe. It provides closest ever infant at TeV energy scales, has...
The most promising source of gravitational waves for the planned kilometer-size laser-interferometer detectors LIGO and VIRGO are merging compact binaries, i.e., neutron-star--neutron-star (NS-NS), neutron-star--black-hole (NS-BH), black-hole--black-hole (BH-BH) binaries. We investigate how accurately distance to masses spins two bodies will be measured from inspiral wave signals by three-detector LIGO-VIRGO network using ``advanced detectors'' (those present a few years after initial...
Abstract We report multiple lines of evidence for a stochastic signal that is correlated among 67 pulsars from the 15 yr pulsar timing data set collected by North American Nanohertz Observatory Gravitational Waves. The correlations follow Hellings–Downs pattern expected gravitational-wave background. presence such background with power-law spectrum favored over model only independent noises Bayes factor in excess 10 14 , and this same an uncorrelated common factors 200–1000, depending on...
Merging compact binaries are currently regarded as the most promising source of gravitational waves for planned Earth-based LIGO/VIRGO laser-interferometer detector system, and will be an important also similar, lower-frequency detectors that might flown in space (e.g., proposed LISA mission). During orbital inspiral, if one or both bodies rapidly rotating, general relativistic spin-orbit spin-spin coupling (i.e., "dragging inertial frames" by bodies' spins) cause binary's plane to precess....
Captures of stellar-mass compact objects (COs) by massive ($\sim 10^6 M_\odot$) black holes (MBHs) are potentially an important source for LISA, the proposed space-based gravitational-wave (GW) detector. The orbits inspiraling COs highly complicated; they can remain rather eccentric up until final plunge, and display extreme versions relativistic perihelion precession Lense-Thirring orbital plane. strongest capture signals will be ~10 times weaker than LISA's instrumental noise, but in...
Abstract The 15 yr pulsar timing data set collected by the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) shows positive evidence presence of a low-frequency gravitational-wave (GW) background. In this paper, we investigate potential cosmological interpretations signal, specifically cosmic inflation, scalar-induced GWs, first-order phase transitions, strings, and domain walls. We find that, with exception stable strings field theory origin, all these models can...
Gravitational-wave interferometers are expected to monitor the last three minutes of inspiral and final coalescence neutron star black hole binaries at distances approaching cosmological, where event rate may be many per year. Because binary's accumulated orbital phase can measured a fractional accuracy $\ll 10^{-3}$ relativistic effects large, waveforms will far more complex, carry information, harder model theoretically than has been expected. Theorists must begin now lay foundation for...
We calculate the angular resolution of planned LISA detector, a space-based laser interferometer for measuring low-frequency gravitational waves from galactic and extragalactic sources. is not pointed instrument; it an all-sky monitor with quadrupolar beam pattern. will measure simultaneously both polarization components incoming waves, so data consist two time series. All physical properties source, including its position, must be extracted these LISA's therefore fixed quantity, but rather...
Black hole binaries with extreme (≳104:1) or intermediate (∼102–104:1) mass ratios are among the most interesting gravitational wave sources that expected to be detected by proposed laser interferometer space antenna (LISA). These have potential tell us much about astrophysics, but also of unique importance for testing aspects general theory relativity in strong field regime. Here we discuss these from perspectives data analysis and applications relativity, providing both a description...
Gravitational radiation drives an instability in the $r$-modes of young rapidly rotating neutron stars. This is expected to carry away most angular momentum star by gravitational emission, leaving a at about 100 Hz. In this paper we model simple way development and evolution during year-long spindown phase. allows us predict general features resulting waveform. We show that formed Virgo cluster could be detected LIGO VIRGO wave detectors when they reach their ``enhanced'' level sensitivity,...
view Abstract Citations (379) References (40) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Tidal Interactions of Inspiraling Compact Binaries Bildsten, Lars ; Cutler, Curt We discuss the tidal interaction in neutron star-neutron star and star-black hole binaries argue that they will not be tidally locked during gravitational inspiral. More specifically, we show that, for inspiraling stars mass greater than about 1.2 solar mass, shortest possible...
The NANOGrav 15-year data set shows evidence for the presence of a low-frequency gravitational-wave background (GWB). While many physical processes can source such gravitational waves, here we analyze signal as coming from population supermassive black hole (SMBH) binaries distributed throughout Universe. We show that astrophysically motivated models SMBH binary populations are able to reproduce both amplitude and shape observed spectrum. multiple model variations GWB spectrum at our current...
Abstract The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohertz gravitational-wave background (GWB). Given that each PTA made different choices in modeling their data, we perform comparison GWB individual noise parameters across results reported from PTAs constitute International Pulsar Timing Array (IPTA). We show despite making choices, there is no significant...
Motivated by the remarkably narrow range of measured spin frequencies ∼20 accreting (and weakly magnetic) neutron stars in Galaxy, Bildsten conjectured that their spin-up had been halted emission gravitational waves. If so, then brightest persistent X-ray source on sky, Scorpius X-1, should be detected wave interferometers within 10 years. pointed out small non-axisymmetric temperature variations accreted crust will lead to ‘wavy’ electron capture layers, and resulting horizontal density...
We show that NS's with large toroidal B-fields tend naturally to evolve into potent gravitational-wave (gw) emitters. The field B_t tends distort the NS a prolate shape, and this magnetic distortion can easily dominate over oblateness ``frozen into'' crust. An elastic frozen-in B-field of magnitude is clearly secularly unstable: wobble angle between angular momentum J^i star's axis n_B^i grow on dissipation timescale until are orthogonal. This final orientation optimal one for emission....
The GEO 600 laser interferometer with m armlength is part of a worldwide network gravitational wave detectors. Due to the use advanced technologies like multiple pendulum suspensions monolithic last stage and signal recycling, anticipated sensitivity close initial detectors several kilometres armlength. This paper describes subsystems 600, status detector by September 2001 plans towards first science run.
view Abstract Citations (220) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Effect of Viscosity on Neutron Star Oscillations Cutler, Curt ; Lindblom, Lee rate at which neutron star oscillations are damped by the presence viscosity and thermal conductivity in matter is computed. Fully relativistic equations used to describe oscillations, best available expressions for dissipation coefficients matter, effects superfluidity these mechanisms...
One of the most exciting prospects for LISA gravitational wave observatory is detection radiation from inspiral a compact object into supermassive black hole. The large parameter space and low amplitude signal make these sources computationally challenging. We outline here first-cut data analysis scheme that assumes realistic computational resources. In context this scheme, we estimate signal-to-noise ratio source requires to pass our thresholds be detected. Combining with an population in...
We investigate the computational requirements for all-sky, all-frequency searches gravitational waves from spinning neutron stars, using archived data interferometric wave detectors such as LIGO. These sources are expected to be weak, so optimal strategy involves coherent accumulation of signal-to-noise Fourier transforms long stretches (months years). Earth-motion-induced Doppler shifts, and intrinsic pulsar spindown, will reduce narrow-band by spreading power across many frequency bins;...
Inspirals of stellar-mass compact objects (COs) into $\ensuremath{\sim}{10}^{6}{M}_{\ensuremath{\bigodot}}$ black holes are especially interesting sources gravitational waves for the planned Laser Interferometer Space Antenna (LISA). The orbits these extreme-mass-ratio inspirals (EMRIs) highly relativistic, displaying extreme versions both perihelion precession and Lense-Thirring orbital plane. We investigate question whether emitted waveforms can be used to strongly constrain geometry...
We show that the Big Bang Observer (BBO), a proposed space-based gravitational-wave (GW) detector, would provide ultra-precise measurements of cosmological parameters. By detecting ~300,000 compact-star binaries, and utilizing them as standard sirens, BBO determine Hubble constant to 0.1%, dark energy parameters w_0 w_a ~0.01 0.1,resp. BBO's dark-energy figure-of-merit be approximately an order magnitude better than all other missions. To date, has been designed with primary goal searching...
A particle of mass \ensuremath{\mu} moves, in the absence external forces, geometry a nonrotating black hole M. The system (black plus particle) emits gravitational waves, and particle's orbit evolves under radiation reaction. aim this paper is to calculate evolution. Our calculations are carried out assumptions that \ensuremath{\mu}/M\ensuremath{\ll}1, bound, reaction takes place over time scale much longer than orbital period. bound orbits Schwarzschild spacetime can be fully...