Results 81 to 90 of about 172,436 (251)

Perspectives on Astrophysics Based on Atomic, Molecular, and Optical (AMO) Techniques [PDF]

, 2018
About two generations ago, a large part of AMO science was dominated by experimental high energy collision studies and perturbative theoretical methods.
Babb, James F., Bellan, Paul M., Brogan, Crystal, Cami, Jan, Caselli, Paola, Corrales, Lia, Dominguez, Gerardo, Federman, Steven R., Fontes, Chris J., Freedman, Richard, Gibson, Brad, Golub, Leon, Gorczyca, Thomas W., Hahn, Michael, Hudson, Reggie L., Hörst, Sarah M., Kuhn, Jeffrey, Lawler, James E., Leutenegger, Maurice A., Marler, Joan P., McCarthy, Michael C., McGuire, Brett A., Milam, Stefanie N., Murphy, Nicholas A., Nave, Gillian, Norton, Aimee A., Papol, Anthony, Raymond, John C., Salama, Farid, Savin, Daniel Wolf, Sciamma-O'Brien, Ella M., Smith, Randall, Sosolik, Chad, Sousa-Silva, Clara, Stancil, Phillip C., Timmes, Frank, Trimble, Virginia L., Wargelin, Bradford J.   +37 more
core   +1 more source

Symmetry‐Driven Unconventional Magnetoelectric Coupling in Perovskite Altermagnets: From Bulk to the Two‐Dimensional Limit

Advanced Science, EarlyView.
The symmetry‐driven coexistence of altermagnetism and (anti)ferroelectricity in perovskites shows a strong dimensional dependence. Upon reducing the system from bulk to the two‐dimensional limit, only C‐type antiferromagnetic order retains ferroelectrically switchable altermagnetism, whereas A‐ and G‐type orders become conventional antiferromagnets ...
Zhou Cui, Ziye Zhu, Xunkai Duan, Bowen Hao, Xianzhang Chen, Jiayong Zhang, Tong Zhou   +6 more
wiley   +1 more source

Simulating the Ring-shaped Line-of-sight Flows in Prominence-cavity Systems

The Astrophysical Journal
Line-of-sight oriented flows with several red and blue Doppler-shifted rings in coronal cavities have been observed by the Coronal Multi-channel Polarimeter (CoMP) but rarely explained.
Tie Liu, Yang Guo, Yingna Su, Jinhan Guo, Yiwei Ni, Ye Qiu, Jie Zhao, Chuan Li, Haisheng Ji, Pengfei Chen, Mingde Ding   +10 more
doaj   +1 more source

Biomimetic Polymerization of Tellurocysteine: Breaking the Natural Amino Acid Radioprotection Limitation

Advanced Science, EarlyView.
Inspired by natural amino acid polymer‐melanin systems, this study strategically incorporated tellurocysteine to develop advanced radiation‐shielding materials. This approach transformed the primary interaction mechanism between melanin‐based materials and incident photons from Compton scattering to the photoelectric effect. Tellurocysteine‐polymerized
Wei Chen, Hanjie Zhu, Yue Zhang, Yuqing Qiao, Ruotong Deng, Huaping Xu, Wei Cao   +6 more
wiley   +1 more source

The AllWISE Catalog as an Infrared Celestial Reference Frame in the Gaia Era

The Astronomical Journal
The launch of Gaia in 2013 December ushered in a new era of space astrometry, allowing for fundamental reference research at an unprecedented level of precision.
J.-C. Liu, N. Liu, Z. Zhu, J. Yao, I. Nurul Huda, Z.-W. Wang   +5 more
doaj   +1 more source

NASA thesaurus: Astronomy vocabulary [PDF]

A terminology of descriptors used by the NASA Scientific and Technical information effort to index documents in the area of astronomy is presented. The terms are listed in hierarchical format derived from the 1988 edition of the NASA Thesaurus Volume 1 --

core   +1 more source

Chiral‐Encoded Pt‐Ir Surfaces as Apparent Spin Filter for Enhanced Oxygen Reduction

Advanced Science, EarlyView.
The Chiral‐Induced Spin Selectivity (CISS) effect is employed in chiral‐encoded mesoporous Platinum‐Iridium (Pt‐Ir) electrocatalysts to enhance the oxygen reduction reaction (ORR). A break in spin symmetry leads to a substantial antagonistic difference in activity (>200%) when comparing two enantiomorphs of the same electrode.
Zikkawas Pasom, Krissanapat Yomthong, Sopon Butcha, Jonas Fransson, Chularat Wattanakit, Alexander Kuhn   +5 more
wiley   +1 more source

Memristive Physical Reservoir Computing

Advanced Science, EarlyView.
Memristors’ nonlinear dynamics and input‐dependent memory effects make them ideal candidates for high‐performance physical reservoir computing (RC). Based on their conductance modulation, memristors can be classified as electronic or optoelectronic types.
Dian Jiao, Ziyuan Wang, Jingrui Wang, Li Zhang, Xianhua Wei, Lingxiang Hu, Zongxiao Li, Athanasios V. Vasilakos, Zhizhen Ye, Fei Zhuge   +9 more
wiley   +1 more source

The complex relationships between active galactic nuclei, bars, and bulges

Astronomy & Astrophysics
Context. Via scaling relations, it is well known that active galactic nuclei (AGNs) and bulges are linked. This link was thought to be driven by mergers, but recent studies show that secular processes are the dominant mechanism of supermassive black hole
Garland I. L., Best H., Fortson L. F., Géron T., Lintott C. J., O’Ryan D., Simmons B. D., Smethurst R. J., Viskotová M., Walmsley M., Werner N., Zajaček M.   +11 more
doaj   +1 more source