Results 51 to 60 of about 31,208 (318)

Unraveling the dynamics of magnetization in topological insulator-ferromagnet heterostructures via spin-orbit torque

npj Spintronics
Spin–orbit coupling is a relativistic effect coupling the orbital angular momentum with the spin, which determines the physical properties of condensed matter.
Taekoo Oh, Naoto Nagaosa
doaj   +1 more source

Orbit Determination via a Deeply- Coupled UKF/GNSS Filter [PDF]

فصلنامه علوم و فناوری فضایی, 2016
This paper is dedicated to determining the orbit of a satellite by using Unscented Kalman Filter (UKF), in which, a GNSS is used as the observation sensor.
MohammadAli Amiri Atashgah, Hamid Gazerpour, seyed Amirreza Roghangir   +2 more
doaj  

Dynamics, Simulation & Control of Orbital Modules for On-Orbit Assembly

IEEE Robotics and Automation Letters
THE economic benefit of distributed launches is driv-ing the assembly of orbital structures towards modular designs which are manufactured on earth and assembled in orbit [1]. To support the in-orbit assembly, the European Union has commissioned the ORU-BOAS project [2], which considers the deployment of orbital modules to perform life-extension ...
Mishra, Hrishik, Vicariotto, Tommaso, De Stefano, Marco, Mishra, Hrishik   +3 more
openaire   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Visual Navigation For On-Orbit Servicing Missions [PDF]

, 2013
Increasing complexity and costs of satellite missions promote the idea of looking for opportunities to extend the operational lifetime or to improve the performance of a satellite instead of simply replacing it by a new one.
Tzschichholz, Tristan, Boge, Toralf, Benninghoff, Heike   +2 more
core  

Towards robust aero-thermodynamic predictions for re-usable single-stage to orbit vehicles [PDF]

, 2012
Re-usable single stage to orbit launch vehicles promise to reduce the cost of access to space, but their success will be particularly reliant on accurate and robust modelling of their aero-thermodynamic characteristics.
Abdul Ahmad, Wuilbercq, Romain, Scanlon, Thomas, Romain Wuilbercq, Ahmad, Abdul Ossman, Thomas Scanlon, Richard Brown, Brown, Richard   +7 more
core   +1 more source

A generalized super-twisting algorithm-based adaptive fixed-time controller for spacecraft pose tracking

Open Astronomy
A generalized super-twisting second-order sliding mode adaptive fixed-time control law, which is used for spacecraft pose tracking in the presence of internal and external uncertainties, is proposed.
Gong Kejie, Wang Yong, Duan Yurui, Mei Yafei, Jiang Yu, Luo Da   +5 more
doaj   +1 more source

Strong variation of spin-orbit torques with relative spin relaxation rates in ferrimagnets

Nature Communications, 2023
There has been a lot of interest in using antiferromagnets for magnetic memories, due to their fast dynamics, and resilience to stray fields. Such a memory was supposed to be switched by a spin-orbit torque. Here, Zhu and Ralph find that as a ferrimagnet
Lijun Zhu, Daniel C. Ralph
doaj   +1 more source

Orbital dynamics of the solar basin

Journal of High Energy Physics
Abstract We study the dynamics of the solar basin — the accumulated population of weakly-interacting particles on bound orbits in the Solar System. We focus on particles starting off on Sun-crossing orbits, corresponding to initial conditions of production inside the Sun, and investigate their evolution over the age of the Solar ...
Cara Giovanetti, Robert Lasenby, Ken Van Tilburg   +2 more
openaire   +3 more sources

Orbital Dynamics of Cygnus X‐3 [PDF]

The Astrophysical Journal, 2000
Orbital-phased-resolved infrared spectra of Cygnus X-3 in outburst and quiescence, including tomographic analysis, are presented. We confirm the phasing of broad HeII and NV lines in quiescence, such that maximum blue shift corresponds to the X-ray minimum at phase = 0.00 +/- 0.04.
Hanson, M.M., Still, M.D., Fender, R.P.
openaire   +4 more sources