A5061340059- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Cosmology and Gravitation Theories
- Astrophysical Phenomena and Observations
- Geophysics and Gravity Measurements
- Radio Astronomy Observations and Technology
- Astronomy and Astrophysical Research
- Geophysics and Sensor Technology
- Astrophysics and Cosmic Phenomena
- Space exploration and regulation
- Atomic and Subatomic Physics Research
- Seismic Waves and Analysis
- Adaptive optics and wavefront sensing
- Superconducting and THz Device Technology
- Black Holes and Theoretical Physics
- History and Developments in Astronomy
- Seismology and Earthquake Studies
- Meteorological Phenomena and Simulations
- Space Science and Extraterrestrial Life
- Cold Atom Physics and Bose-Einstein Condensates
- earthquake and tectonic studies
- Economic Growth and Productivity
- Global trade and economics
Friedrich Schiller University Jena
2021-2024
Pennsylvania State University
2020-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca
2024
Abstract The Einstein Telescope (ET), the European project for a third-generation gravitational-wave detector, has reference configuration based on triangular shape consisting of three nested detectors with 10 km arms, where each detector 'xylophone' made an interferometer tuned toward high frequencies, and low frequencies working at cryogenic temperature. Here, we examine scientific perspectives under possible variations this design. We perform detailed evaluation science case single...
This Horizon Study describes a next-generation ground-based gravitational-wave observatory: Cosmic Explorer. With ten times the sensitivity of Advanced LIGO, Explorer will push astronomy towards edge observable universe ($z \sim 100$). The goals this are to describe and evaluate design concepts for Explorer; plan United States' leadership in astronomy; envisage role international effort build "Third-Generation" (3G) observatory network that make discoveries transformative across astronomy,...
We present a new Python package, gwbench, implementing the well-established Fisher information formalism as fast and straightforward tool for purpose of gravitational-wave benchmarking, i.e. estimation signal-to-noise ratios measurement errors gravitational waves observed by network detectors. Such an infrastructure is necessary due to high computational cost Bayesian parameter methods which renders them less effective scientific assessment waveforms, detectors, networks especially when...
In this study, we use simple performance metrics to assess the science capabilities of future ground-based gravitational-wave detector networks-composed A+ or Voyager upgrades LIGO, Virgo, and KAGRA observatories proposed next generation such as Cosmic Explorer Einstein Telescope.These refer coalescences binary neutron stars (BNSs) black holes (BBHs) include: (i) network detection efficiency rate cosmological sources a function redshift, (ii) signalto-noise ratios accuracy with which...
In this paper, we explore the prospect for improving measurement accuracy of masses and radii neutron stars. We consider imminent long-term upgrades Laser Interferometer Gravitational-Wave Observatory (LIGO) Virgo, as well next-generation observatories---the Cosmic Explorer Einstein Telescope. find that star radius with single events will be constrained to within roughly 500 m current generation detectors their upgrades. This improve 200, 100 50 a network observatories contain one, two or...
Abstract Gravitational-wave observations by the laser interferometer gravitational-wave observatory (LIGO) and Virgo have provided us a new tool to explore Universe on all scales from nuclear physics cosmos massive potential further impact fundamental physics, astrophysics, cosmology for decades come. In this paper we studied science capabilities of network LIGO detectors when they reach their best possible sensitivity, called A <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"...
In this Letter, we show that multiband observations of stellar-mass binary black holes by the next generation ground-based observatories (3G) and space-based Laser Interferometer Space Antenna (LISA) would facilitate a comprehensive test general relativity simultaneously measuring all post-Newtonian coefficients. Multiband measure most known phasing coefficients to an accuracy below few percent-2 orders-of-magnitude better than best bounds achievable from even "golden" binaries in 3G or LISA...
Abstract The existence of primordial black holes (PBHs), which may form from the collapse matter overdensities shortly after Big Bang, is still under debate. Among potential signatures PBHs are gravitational waves (GWs) emitted binary hole (BBH) mergers at redshifts z ≳ 30, where formation astrophysical unlikely. Future ground-based GW detectors, Cosmic Explorer and Einstein Telescope, will be able to observe equal-mass BBH with total mass <mml:math...
Gravitational-wave astronomy has revolutionized humanity's view of the universe, a revolution driven by observations that no other field can make. This white paper describes an observatory builds on decades investment National Science Foundation and will drive discovery for to come: Cosmic Explorer. Major discoveries in are three related improvements: better sensitivity, higher precision, opening new observational windows. Explorer promises all deliver order-of-magnitude greater sensitivity...
Observations by the current generation of gravitational-wave detectors have been pivotal in expanding our understanding universe. Although tens exciting compact binary mergers observed, neutron star-black hole (NSBH) remained elusive until they were first confidently detected 2020. The number NSBH detections is expected to increase with sensitivity improvements and proposed construction new observatories over next decade. In this work, we explore detection measurement capabilities these...
Third-generation (3G) gravitational-wave detectors will observe thousands of coalescing neutron star binaries with unprecedented fidelity. Extracting the highest precision science from these signals is expected to be challenging owing both high signal-to-noise ratios and long-duration signals. We demonstrate that current Bayesian inference paradigms can extended analysis binary without breaking computational bank. construct reduced order models for $\sim 90\,\mathrm{minute}$ long signals,...
In this study, we use simple performance metrics to assess the science capabilities of future ground-based gravitational-wave detector networks -- composed A+ or Voyager upgrades LIGO, Virgo, and KAGRA observatories proposed next generation such as Cosmic Explorer Einstein Telescope. These refer coalescences binary neutron stars (BNSs) black holes (BBHs) include: (i) network detection efficiency rate cosmological sources a function redshift, (ii) signal-to-noise ratios accuracy with which...
Primordial black holes (PBHs) may form from the collapse of matter overdensities shortly after Big Bang. One identify their existence by observing gravitational wave (GW) emissions merging PBH binaries at high redshifts $z\gtrsim 30$, where astrophysical binary (BBHs) are unlikely to merge. The next-generation ground-based GW detectors, Cosmic Explorer and Einstein Telescope, will be able observe BBHs with total masses $\mathcal{O}(10-100)~M_{\odot}$ such redshifts. This paper serves as a...
Abstract After GW170817, kilonovae have become of great interest for the astronomical, astrophysics and nuclear physics communities, due to their potential in revealing key information on compact binary merger from which they emerge, such as fate central remnant or composition expelled material. Therefore, landscape models employed analysis is rapidly evolving, with multiple approaches being used different purposes. In this paper, we present xkn, a semi-analytic framework predicts interprets...
Gravitational waves from the coalescence of two black holes carry signature strong field dynamics binary holes. In this work we have used numerical relativity simulations and post-Newtonian theory to investigate dynamics. Post-Newtonian is a low-velocity expansion that assumes companion bodies be point-particles, while treats as extended objects with horizons fully captures their There priori no reason for waveforms computed using these disparate methods agree each other, especially at late...
Stellar-mass binary black holes will sweep through the frequency band of Laser Interferometer Space Antenna (LISA) for months to years before appearing in audio-band ground-based gravitational-wave detectors. One can expect several tens these events up a distance 500 Mpc each year. The LISA signal-to-noise ratio such sources even at close distances be too small blind search confidently detect them. However, next generation detectors, expected operational time LISA, observe them with ratios...
We describe realistic observing scenarios for early warning detection of binary neutron star mergers with the current generation ground-based gravitational-wave detectors as these approach design sensitivity. Using Fisher analysis, we estimate that Advanced LIGO and Virgo will detect one signal before merger in their fourth run provided they maintain a 70\% duty cycle. 60\% all observations 8\% those detectable 20 seconds be localized to $\lesssim 100 \thinspace \mathrm{deg}^2$. If KAGRA is...
Next-generation detectors are expected to be sensitive postmerger signals from binary neutron star coalescences and thus directly probe the remnant dynamics. We investigate scientific potential of detections with Einstein Telescope using full Bayesian analyses state-of-the-art waveform model ${\tt NRPMw}$. find that: (i) Postmerger signal-to-noise ratio (SNR) ${\sim}7$ can confidently detected a Bayes' factor $\log{\cal B}\simeq 5$ ($\rm e$-folded) posterior distributions report informative...
Precision cosmology is crucial to understand the different energy components in Universe and their evolution through cosmic time. Gravitational wave sources are standard sirens that can accurately map out distances Universe. Together with source redshift information, we then probe expansion history of We explore capabilities various gravitational-wave detector networks constrain cosmological models while employing separate waveform for inspiral post-merger part gravitational signal from...
Gravitational-wave observations by the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo have provided us a new tool to explore Universe on all scales from nuclear physics cosmos massive potential further impact fundamental physics, astrophysics, cosmology for decades come. In this paper we studied science capabilities of network LIGO detectors when they reach their best possible sensitivity, called A#, given infrastructure in which exist generation observatories that are...
Joint observations of gravitational waves and electromagnetic counterparts will answer questions about cosmology, gamma-ray bursts, the behavior matter at supranuclear densities. The addition a Southern-hemisphere gravitational-wave observatory to proposed global networks creates longer baseline, which is beneficial for sky localization. We analyze how an in Australia can enhance multimessenger astronomy capabilities future networks. estimate number binary neutron star mergers with joint...
Abstract The planned sensitivity upgrades to the LIGO and Virgo facilities could uniquely identify host galaxies of dark sirens —compact binary coalescences without any electromagnetic counterparts—within a redshift z = 0.1. This is aided by higher-order spherical harmonic modes present in gravitational-wave signal, which also improve distance estimation. In conjunction, higher will facilitate an accurate, independent measurement galaxy’s addition luminosity from observation infer...
In this paper, we explore the prospect for improving measurement accuracy of masses and radii neutron stars. We consider imminent long-term upgrades Laser Interferometer Gravitational-Wave Observatory (LIGO) Virgo, as well next-generation observatories -- Cosmic Explorer Einstein Telescope. find that star radius with single events will be constrained to within roughly 500m current generation detectors their upgrades. This improve 200m, 100m 50m a network contain one, two or three...
Next-generation terrestrial gravitational-wave observatories will detect $\mathcal{O}(10^{5})$ signals from compact binary coalescences every year. These can last for several hours in the detectors' sensitivity band and they be affected by multiple unresolved sources contributing to a confusion-noise background data. Using an information-matrix formalism, we estimate impact of confusion noise power spectral density broadening parameter estimates GW170817-like event. If our is neglected, find...