Results 51 to 60 of about 1,547,930 (199)

Perturbative Analytical Construction of Bowen–York Initial Data for Binary Black Holes up to Third Order in Spin and Linear Momentum

open access: yesFortschritte der Physik, Volume 74, Issue 8, August 2026.
ABSTRACT We analytically construct initial data for binary black hole systems by solving the Einstein constraint equations within the Bowen–York framework. Allowing for arbitrarily oriented linear momenta and spins, we obtain a perturbative solution of the vacuum Hamiltonian constraint up to third order in the source parameters. Our solution explicitly
Leyla Ogurol, Tore Boybeyi, Bayram Tekin
wiley   +1 more source

A Transdimensional Sampling Framework for Pulsar Timing Noise Modeling

open access: yesThe Astrophysical Journal
A careful characterisation of the noise processes in pulsar timing data is a prerequisite for pulsar timing array experiments. While single-pulsar noise analyses are crucial for both gravitational-wave searches and astrophysical studies, they are often ...
Valentina Di Marco   +5 more
doaj   +1 more source

Research on High-Stability Composite Control Methods for Telescope Pointing Systems under Multiple Disturbances

open access: yesSensors
During the operation of space gravitational wave detectors, the constellation configuration formed by three satellites gradually deviates from the ideal 60° angle due to the periodic variations in orbits.
Rui Zhang   +9 more
doaj   +1 more source

Nuclear Physics with Gravitational Waves from Neutron Stars Disrupted by Black Holes

open access: yesThe Astrophysical Journal Letters, 2023
Gravitational waves from neutron star–black hole (NSBH) mergers that undergo tidal disruption provide a potential avenue to study the equation of state of neutron stars and hence the behavior of matter at its most extreme densities.
Teagan A. Clarke   +3 more
doaj   +1 more source

Questioning Your Brilliance in Physics: Differential Shifts in Fixed Mindsets by Grade and Gender

open access: yesJournal of Research in Science Teaching, Volume 63, Issue 6, Page 514-530, August 2026.
ABSTRACT Students' domain‐specific mindsets and their beliefs about their capacity to improve through effort play a crucial role in shaping their experiences and decisions to persist in STEM disciplines. Physics is generally seen as a field requiring innate brilliance, which can reinforce fixed mindsets, particularly after initial setbacks in ...
Fargol Seifollahi   +2 more
wiley   +1 more source

Gravitational wave astronomy: the current status

open access: yes, 2015
In the centenary year of Einstein’s General Theory of Relativity, this paper reviews the current status of gravitational wave astronomy across a spectrum which stretches from attohertz to kilohertz frequencies. Sect.
Zhu, Z.   +104 more
core   +2 more sources

Orbital Eccentricity in a Neutron Star–Black Hole Merger

open access: yesThe Astrophysical Journal Letters
The observation of gravitational waves (GWs) from merging black holes and neutron stars provides a unique opportunity to discern information about their astrophysical environment. Two signatures that are considered powerful tracers to distinguish between
Gonzalo Morras   +2 more
doaj   +1 more source

Lunar Trailblazer Spacecraft Tracking and Mission Recovery Attempt: Characterization of Status and Behavior of a Non‐Cooperative Object in Cis‐Lunar Space

open access: yesEarth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Unexpectedly following launch, the Lunar Trailblazer mission experienced software anomalies that led it to orient solar panels away from the sun and lose communication with Earth. This paper describes efforts to determine the spacecraft state and attempt recovery of the mission's science at the Moon.
B. L. Ehlmann   +28 more
wiley   +1 more source

Wave Climate, Geotechnical and Geophysical Analysis of the Tillamook Jetties [PDF]

open access: yes
Wave Energy AS (WE) is an ocean energy company from Norway established to develop, test, market and commercialize the patented SSG™ wave energy converter technology.
Wave Energy AS, Bakke, Monica
core   +6 more sources

Comparing Monte Carlo Models of Impact Alteration of Planetary Atmospheres

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract One process that affects atmospheric surface pressure is impact bombardment. The evolution of a planet's atmosphere under impact bombardment is an open question. We use a Monte Carlo method to evolve a range (0.006–92.5 bar) of initial atmospheres at Mars, Earth, and Venus under bombardment of 5×106 $5\times 1{0}^{6}$ impactors using seven ...
M. R. Huffman   +4 more
wiley   +1 more source

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