Results 81 to 90 of about 160,396 (265)

Characteristic extraction in numerical relativity: binary black hole merger waveforms at null infinity

, 2010
The accurate modeling of gravitational radiation is a key issue for gravitational wave astronomy. As simulation codes reach higher accuracy, systematic errors inherent in current numerical relativity wave-extraction methods become evident, and may lead ...
, , Ajith P, Ajith P, Ajith P, Allen G Camarda K Seidel E, Aylott B, B Szilágyi, Babiuc M, Baker J G van Meter J R McWilliams S T Centrella J Kelly B J, Bishop N, Bishop N T, Bishop N T, Brügmann B González J A Hannam M Husa S Sperhake U Tichy W, Buonanno A Cook G B Pretorius F, C Reisswig, Cook G B, D Pollney, Gonzalez J A Sperhake U Bruegmann B, Goodale T Allen G Lanfermann G Massó J Radke T Seidel E Shalf J, Gómez R, Herrmann F, N T Bishop, Nagar A, Pollney D Reisswig C Dorband N Schnetter E Diener P, Pollney D Reisswig C Schnetter E Dorband N Diener P, Reisswig C, Reisswig C, Rezzolla L, Schnetter E, Schnetter E, Smarr L, Szilágyi B   +32 more
core   +3 more sources

Current Switching of Topological Spin Chirality in the van der Waals Antiferromagnet Co1/3TaS2

Advanced Materials, EarlyView.
Spin chirality plays a central role in quantum magnetism, governing spin winding and generating real‐space Berry phases. We propose the intriguing concept of current‐switching spin chirality and demonstrate it via unconventional intrinsic self‐spin‐orbit‐torque in pristine Co1/3TaS2, purely by electrical current and with high energy efficiency.
Kai‐Xuan Zhang, Seungbok Lee, Woonghee Cho, Je‐Geun Park   +3 more
wiley   +1 more source

dolphin: A Fully Automated Forward-modeling Pipeline Powered by Artificial Intelligence for Galaxy-scale Strong Lenses

The Astrophysical Journal
Strong gravitational lensing is a powerful tool for probing the internal structure and evolution of galaxies, the nature of dark matter, and the expansion history of the Universe, among many other scientific applications.
Anowar J. Shajib, Nafis Sadik Nihal, Chin Yi Tan, Vedant Sahu, Simon Birrer, Tommaso Treu, Joshua Frieman   +6 more
doaj   +1 more source

Low frequency radio astronomy instrumentation, analysis, modelling and data publication

, 2022
Low frequency radio emissions (
openaire   +1 more source

Multi-wavelength analysis of the dust emission in the Small Magellanic Cloud

, 2004
We present an analysis of dust grain emission in the diffuse interstellar medium of the Small Magellanic Cloud (SMC). This study is motivated by the availability of 170 microns ISOPHOT data covering a large part of the SMC, with a resolution enabling to ...
Aguirre, Aumann, Azzopardi, Bernard, Bontekoe, Bouchet, Boulanger, Boulanger, Brüns, C. Bot, D. Egret, Desert, Dufour, Dwek, F. Boulanger, G. Lagache, Gabriel, Gabriel, Galliano, Giard, Hirashita, Hirashita, Issa, Kerton, Kessler, L. Cambrésy, Lagache, Lagache, Lagache, Lemke, Lequeux, Li, Lisenfeld, Mathis, Pagani, Rubio, Rubio, Sauvage, Sauvage, Schwering, Sofia, Sofia, Stanimirovic, Stanimirovic, Staveley-Smith, Tumlinson, Vangioni-Flam, Welty, Westerlund, Wheelock, Wilke, Wilke   +51 more
core   +2 more sources

Electric‐Current‐Assisted Nucleation of Zero‐Field Hopfion Rings

Advanced Materials, EarlyView.
This work reports a novel and efficient nucleation protocol for 3D localized topological magnetic solitons‐hopfion rings in chiral magnets using pulsed electric currents. By using Lorentz transmission electron microscopy and topological analysis, we report characteristic features and extraordinary stability of hopfion rings in zero or inverted external
Xiaowen Chen, Dongsheng Song, Filipp N. Rybakov, Nikolai S. Kiselev, Long Li, Wen Shi, Rui Wu, Xuewen Fu, Olle Eriksson, Stefan Blügel, Rafal E. Dunin‐Borkowski, Haifeng Du, Fengshan Zheng   +12 more
wiley   +1 more source

A Multibranch Deep Neural Network for the Superresolution of Solar Magnetograms

The Astrophysical Journal Supplement Series
The existing superresolution (SR) models for solar magnetograms are mostly borrowed from the SR models for natural images. They are less effective for processing solar magnetograms with a very large dynamic range and very rich image features.
Fengping Dou, Long Xu, Dong Zhao, Zhixiang Ren   +3 more
doaj   +1 more source

The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. VII. Properties of the Host Galaxy and Constraints on the Merger Timescale

, 2017
We present the properties of NGC 4993, the host galaxy of GW170817, the first gravitational wave (GW) event from the merger of a binary neutron star (BNS) system and the first with an electromagnetic (EM) counterpart.
Alexander, K. D., Annis, J., Berger, E., Blanchard, P. K., Brout, D., Brown, D. A., Chen, H. -Y., Chornock, R., Conroy, C., Cowperthwaite, P. S., Doctor, Z., Eftekhari, T., Fong, W., Frieman, J. A., Holz, D. E., Leja, J., Margutti, R., Metzger, B. D., Nicholl, M., Rest, A., Sako, M., Soares-Santos, M., Villar, V. A., Williams, P. K. G.   +23 more
core   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Mapping Galaxy Images across Ultraviolet, Visible, and Infrared Bands Using Generative Deep Learning

The Astrophysical Journal
We demonstrate that generative deep learning can translate galaxy observations across ultraviolet, visible, and infrared photometric bands. Leveraging mock observations from the Illustris simulations, we develop and validate a supervised image-to-image ...
Youssef Zaazou, Alex Bihlo, Terrence S. Tricco   +2 more
doaj   +1 more source