Results 131 to 140 of about 7,690,788 (272)

State-space algorithm for detecting the nanohertz gravitational wave background

Monthly Notices of the Royal Astronomical Society
ABSTRACT The stochastic gravitational wave background (SGWB) can be observed in the nanohertz band using a pulsar timing array (PTA). Here, a computationally efficient state-space framework is developed for analysing SGWB data, in which the stochastic gravitational wave strain at Earth is tracked with a non-linear Kalman filter and ...
Tom Kimpson, Andrew Melatos, Joseph O’Leary, Julian B Carlin, Robin J Evans, William Moran, Tong Cheunchitra, Wenhao Dong, Liam Dunn, Julian Greentree, Nicholas J O’Neill, Sofia Suvorova, Kok Hong Thong, Andrés F Vargas   +13 more
openaire   +2 more sources

Earth-orbiting resonant-mass gravitational wave detectors [PDF]

, 1989
Earth-based gravitational wave detectors suffer from the need to support the large antenna masses against the earth's gravity without transmitting a significant amount of seismic noise.
Paik, Ho Jung
core  

Scaling turbulence drives the general circulation

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The NOAA Gulfstream SP4, which deployed the GPS dropsondes over the NE Pacific Ocean as part of the Winter Storms Project during the January–March periods of 2004, 2005 and 2006. Abstract Statistical multifractal analysis of airborne and dropsonde observations is used to show that persistence of velocity after molecular collisions breaks the continuous
Adrian F. Tuck
wiley   +1 more source

High-Performance Telescope System Design for Space-Based Gravitational Waves Detection

Sensors
Space-based gravitational wave (GW) detection employs the Michelson interferometry principle to construct ultra-long baseline laser interferometers in space for detecting GW signals with a frequency band of 10−4–1 Hz.
Huiru Ji, Lujia Zhao, Zichao Fan, Rundong Fan, Jiamin Cao, Yan Mo, Hao Tan, Zhiyu Jiang, Donglin Ma   +8 more
doaj   +1 more source

Dry intrusions and warm‐core development in Medicanes: Insights from a multi‐case analysis and the peculiar evolution of Ianos

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Mediterranean tropical‐like cyclones show a clear seasonality, with September cyclones exhibiting the deepest convection and Ianos representing the most extreme case. While one or more dry intrusions are typically detected during the cyclone life cycle, Ianos instead features two much weaker descending airflows.
Daniele Nigro, Lorenzo Giovannini, Simona Bordoni, Stavros Dafis, Mario Marcello Miglietta   +4 more
wiley   +1 more source

Evolution of sea fog based on meteorological and oceanographic observations during FATIMA Yellow Sea campaign

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study presents a conceptual framework linking sea‐water temperature Tw gradients to the formation and persistence of sea fog in the southeastern Yellow Sea. Over cold waters maintained by tidal mixing, downward latent heat flux enhances lower‐level stability and sustains persistent sea fog, whereas over warmer waters, upward fluxes and thermal ...
Jae‐yong Lee, Kyung‐Il Chang, Kyung Man Kim, Ismail Gultepe, Harindra J. S. Fernando   +4 more
wiley   +1 more source

Overlap reduction function for pulsar timing arrays in an expanding Universe

European Physical Journal C: Particles and Fields
Since it was confirmed two decades ago that the expansion of the Universe is accelerating, it would be of theoretical interests to figure out what is the influence from cosmological constant on detection of stochastic gravitational wave background.
Qing-Hua Zhu
doaj   +1 more source

Design and Testing of a Minimal Configuration Underwater Micro‐Glider: Automating Lake and Reservoir Monitoring

Journal of Field Robotics, EarlyView.
ABSTRACT Uncrewed underwater vehicles (UUVs) have transformed oceanographic research through autonomous data gathering. Similarly, lake and other aquatic research can potentially be automated and transformed. However, UUVs would need to be smaller, lighter, less complex, and cheaper than currently available to make them more practical and user‐friendly
James M Rand, Alan Hunter, Danielle Wain, Lee D Bryant   +3 more
wiley   +1 more source

Analysis of flood events in the Three Gorges Reservoir Region using the coupled VIC‐CaMaFlood hydrological model

River, EarlyView.
Abstract In recent years, the Three Gorges Reservoir Region (TGRR) has been increasingly affected by climate change, with frequent flood events posing challenges to regional flood control. The NO.1 flood of the Daning River in 2024 further highlights the severity of flood risks in the region.
Wenlong Song, Tianshi Feng, Qiang Zhang, Yixin Sun, Yizhu Lu, Xingdong Li, Hongjie Liu, Rongjie Gui, Long Chen   +8 more
wiley   +1 more source

A Compact Annular Electrostatic Clutch Joint: Dynamic Response Modeling and Time‐Sharing Control for Underactuated Robots

SmartBot, EarlyView.
Electrostatic clutches offer programmable variable stiffness for multi‐DOF robots, but their continuous motion is usually bottlenecked by spatial constraints and detachment delays. Here, the authors report a compact annular electrostatic clutch joint with a biphasic amplitude‐frequency modulation strategy to rapidly mitigate residual polarization ...
Haochen Yong, Jian Wang, Zhisheng Xia, Zhexuan Li, Han Ding, Zhigang Wu   +5 more
wiley   +1 more source