Results 21 to 30 of about 34,250 (159)

General relativity and relativistic astrophysics

, 2016
Einstein established the theory of general relativity and the corresponding field equation in 1915 and its vacuum solutions were obtained by Schwarzschild and Kerr for, respectively, static and rotating black holes, in 1916 and 1963, respectively.
Mukhopadhyay, Banibrata
core   +1 more source

Observation of collapsing radiative shocks in laboratory experiments [PDF]

, 2006
This article reports the observation of the dense, collapsed layer produced by a radiative shock in a laboratory experiment. The experiment uses laser irradiation to accelerate a thin layer of solid-density material to above 100 km/s100km∕s, the first to
Boehly, T., Boireau, L., Bouquet, S., Dannenberg, K. K., Drake, R. Paul, Glendinning, S. Gail, Greenough, J., Grosskopf, M., Harding, Eric C., Knauer, J. P., Koenig, M., Kremer, D. J., Leibrandt, D. R., Perry, T. S., Reighard, A. B., Remington, Bruce A., Vinci, T.   +16 more
core   +3 more sources

Laser Cosmology

, 2014
Recent years have seen tremendous progress in our understanding of the cosmos, which in turn points to even deeper questions to be further addressed. Concurrently the laser technology has undergone dramatic revolutions, providing exciting opportunity for
Chen, Pisin
core   +1 more source

Fundamental Physics and Relativistic Laboratory Astrophysics with Extreme Power Lasers

, 2012
The prospects of using extreme relativistic laser-matter interactions for laboratory astrophysics are discussed. Laser-driven process simulation of matter dynamics at ultra-high energy density is proposed for the studies of astrophysical compact objects ...
Bulanov, S. V., Esirkepov, T. Zh.
core   +1 more source

Magnetic Reconnection in Extreme Astrophysical Environments

, 2011
Magnetic reconnection is a basic plasma process of dramatic rearrangement of magnetic topology, often leading to a violent release of magnetic energy. It is important in magnetic fusion and in space and solar physics --- areas that have so far provided ...
A. Bhattacharjee, A. Brandenburg, A. Burrows, A. Lazarian, A. Spitkovsky, A.A. Ballegooijen van, A.A. Galeev, A.I. MacFadyen, A.K. Harding, A.P. Goodson, A.R. Choudhuri, B. Paczynski, B. Warner, B.D. Farris, B.F. Liu, B.N. Rogers, C. Thompson, C. Thompson, C. Thompson, C. Thompson, C.A. Tout, C.H. Jaroschek, C.H. Jaroschek, C.H. Jaroschek, C.K. Li, C.R. D’Angelo, D. Biskamp, D. Giannios, D. Giannios, D. Giannios, D. Giannios, D. Giannios, D. Lynden-Bell, D. Proga, D.A. Larrabee, D.A. Uzdensky, D.A. Uzdensky, D.A. Uzdensky, D.A. Uzdensky, D.A. Uzdensky, D.A. Uzdensky, D.A. Uzdensky, D.A. Uzdensky, D.A. Uzdensky, D.A. Uzdensky, D.A. Uzdensky, D.A. Uzdensky, D.M. Palmer, Dmitri A. Uzdensky, E.D. Feigelson, E.G. Blackman, E.G. Zweibel, E.G. Zweibel, E.N. Parker, E.N. Parker, E.P. Mazets, F. Haardt, F. Heitsch, F.C. Michel, F.S. Mozer, F.V. Coroniti, G. Drenkhahn, H. Herold, H. Lesch, H.C. Spruit, H.E. Petschek, H.K. Lee, I. Contopoulos, J. Birn, J. Goodman, J. Pétri, J.G. Kirk, J.J. Aly, K. Shibata, L.S. Shepherd, M. Hesse, M. Lyutikov, M. Lyutikov, M. Lyutikov, M. Lyutikov, M. Lyutikov, M. Lyutikov, M. Lyutikov, M. Lyutikov, M. Umizaki, M. Yamada, M. Yamada, M. Øieroset, M.H.P.M. Putten van, M.H.P.M. Putten van, M.J. Rees, M.M. Romanova, M.M. Romanova, M.R. Hayashi, M.V. Medvedev, N. Bessho, N. Bessho, N. Vlahakis, N. Watanabe, N.F. Loureiro, P. Meszaros, P.A. Cassak, P.A. Cassak, P.A. Cassak, P.A. Cassak, P.A. Cassak, P.A. Sweet, P.M. Nilson, P.M. Woods, R. Samtaney, R. Schopper, R.G. Kleva, R.P. Drake, R.S. Steinolfson, S. Zenitani, S. Zenitani, S. Zenitani, S. Zenitani, S. Zenitani, S.E. Woosley, S.S. Komissarov, S.S. Komissarov, T. Matteo Di, T. Padmanabhan, T.D. Phan, V.L. Dorman, W. Daughton, W. Liu, Y. Huang, Y. Lyubarsky, Y. Masada, Y.E. Lyubarskii, Y.E. Lyubarsky, Y.E. Lyubarsky, Z.W. Ma   +134 more
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Artificial Neuron Based on Electrical Anisotropy from WSe2 Field Effect Transistors

Advanced Science, EarlyView.
An artificial neuron was realized based on the anisotropic mobility of WSe2. Dendritic and axon‐multisynaptic performance of a neuron was achieved with optical and voltage pulses. Recognition accuracy of handwritten digits was obtained to 97% based on the synaptic weight of an artificial neuron.
Qi Sun, Ping Chen, Kun Lv, Chuanwen Chen, Jinsheng Zhu, Zhiling Chen, Yaxian Lu, Ni Zhang, Zongqian Tan, Tao Lin, Caofeng Pan   +10 more
wiley   +1 more source

End of a Dark Age?

, 2016
We argue that dark matter and dark energy phenomena associated with galactic rotation curves, X-ray cluster mass profiles, and type Ia supernova data can be accounted for via small corrections to idealized general relativistic spacetime geometries due to
McDevitt, Timothy, Silberstein, Michael, Sten, A. K., Stuckey, W. M.   +3 more
core   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

Advanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown, Mathilda Avirett‐Mackenzie, Carolin Villforth, Georgios Exarchakis   +3 more
wiley   +1 more source

Chemical Doping Engineering of Polarization and Topological Textures in van der Waals Ferroelectric CuInP2S6

Advanced Science, EarlyView.
Our work reports that Li⁺ doping in CuInP2S₆ induces coexistence of high‐ and low‐polarization states, which fosters a rich spectrum of topological polar textures, such as bubbles and labyrinth domains. An unconventional flexoelectric effect is also discovered, where strain gradients can mechanically manipulate these polarization states and their ...
Lei Gao, Wenhao Li, Fei Sun, Ziyi Zhou, Zhihao Shen, Jianwei Liang, He Jiang, Weiming Xiong, Weijin Chen, Xiaoyue Zhang, Yi Zhang, Xinzhi Liu, Yue Zheng   +12 more
wiley   +1 more source

Beyond Silicon: Toward Sustainable, NIR‐II, and Conformable Organic Photodiodes

Advanced Energy Materials, EarlyView.
In this perspective, a strategic shift in organic photodetector (OPD) research is proposed: instead of the incremental advances in silicon's stronghold arena, the most impactful future for OPDs lies in addressing silicon's intrinsic limitations, i.e., detection in the longer wavelength range above silicon's coverage (>1100 nm, termed as near infrared ...
Hrisheekesh Thachoth Chandran, Jiaming Huang, Hao Xia, Rakesh Rajendran Nair, Shen Xing, Gang Li, Karl Leo, Johannes Benduhn   +7 more
wiley   +1 more source