Results 71 to 80 of about 237,261 (271)

Period changes in six contact binaries: WZ And, V803 Aql, DF Hya, PY Lyr, FZ Ori, and AH Tau

, 2008
Six contact binaries lacking a period analysis have been chosen to search for the presence of a third body. The O-C diagrams of these binaries were analyzed with the least-squares method by using all available times of minima.
A. Liakos, Alawy, Albayrak, Applegate, Binnendijk, Borkovits, Brancewicz, Brát, Byboth, Cook, Frieboes-Conde, Hall, Harmanec, Hoffman, Hoffmeister, Irwin, K. Gazeas, Kholopov, Kwee, Lanza, Lanza, Liu, Liu, Lucy, M. Wolf, Malkov, Manimanis, Mayer, Niarchos, Oh, P. Niarchos, P. Zasche, Pribulla, Rafert, Rovithis-Livaniou, Rukmini, Samec, Shapley, Shaw, Srivastava, Sterken, V. Manimanis, van Hamme, Wolf, Woltjer, Yang, Zasche, Zavala, Zessewitsch, Zhang, Zhang   +50 more
core   +1 more source

Realization of Complex‐Shaped Magnetic Nanotubes with 3D Printing and Electrodeposition

Advanced Functional Materials, EarlyView.
Complex‐shaped magnetic nanotubes were fabricated by coating three‐dimensional nanoscaffolds fabricated with focused electron beam induced deposition with a magnetic coating via electrodeposition. X‐ray magnetic microscopy and simulations revealed an azimuthal magnetic configuration within the nanotubes and pinning of domain walls at curved vertices ...
Claudia Fernández‐González, Pamela Morales‐Fernández, Luke Alexander Turnbull, Claas Abert, Dieter Suess, Michael Foerster, Miguel Á. Niño, Pawel Nita, Anna Mandziak, Simone Finizio, Nuria Bagués, Eva Pereiro, Amalio Fernández‐Pacheco, Lucas Pérez, Sandra Ruiz‐Gómez, Claire Donnelly   +15 more
wiley   +1 more source

Integrated Study of X-Ray Spectrum and Time Lags for HBL Mrk 421 within the Framework of the Multiple-zone Leptonic Model

The Astrophysical Journal
We present the timing analysis of 10 archived XMM-Newton observations with an exposure of >40 ks of Markarian 421. Mrk 421 is the brightest high-frequency-peaked BL Lac object emitting in X-rays produced by electrons accelerated in the innermost regions ...
Wen Hu, Jia-Lai Kang, Zhen-Yi Cai, Jun-Xian Wang, Zhen-Bo Su, Guang-Cheng Xiao   +5 more
doaj   +1 more source

Systematic variation of the 12CO/13CO ratio as a function of star-formation rate surface density [PDF]

, 2014
We show that the12CO/13CO intensity ratio in nearby galaxies varies systematically as a function of the star formation rate surface density and gas surface density.
Davis, Timothy A.
core   +2 more sources

A Comparative Analysis of Plasmonic and Dielectric Metasurface Sensing Platforms Powered by Bound States in the Continuum

Advanced Functional Materials, EarlyView.
This work reveals a fundamental trade‐off between plasmonic and dielectric metasurfaces for molecular sensing. A clear performance crossover is identified: dielectric metasurfaces excel in air, while plasmonic metasurfaces dominate in lossy solvents. These results establish design rules for infrared metasurface sensors and enable optimized performance ...
Tao Jiang, Angana Bhattacharya, Martin Barkey, Andreas Aigner, Lina Rohrer, Thomas Weber, Juan Wang, Stefan A. Maier, Andreas Tittl   +8 more
wiley   +1 more source

A Combined TESS and Ground-based Study of Transit Timing Variations in HAT-P-16, TOI-1516 and TOI-2046 Systems

The Astronomical Journal
We present new results for the hot Jupiters HAT-P-16b, TOI-1516b, and TOI-2046b, based on photometric observations collected using both space- and ground-based facilities.
E. Sonbas, K. Kaplan, M. Tanriver, A. Keskin, K. Dhuga, A. Bulut, E. Göğüş, W. Ogłoza   +7 more
doaj   +1 more source

The Colour of the Night Sky

Journal of Imaging, 2020
The measurement of night sky quality has become an important task in night sky conservation. Modern measurement techniques involve mainly a calibrated digital camera or a spectroradiometer.
Zoltán Kolláth, Dénes Száz, Kai Pong Tong, Kornél Kolláth   +3 more
doaj   +1 more source

Measuring space-time variation of the fundamental constants with redshifted submillimetre transitions of neutral carbon

, 2011
We compare the redshifts of neutral carbon and carbon monoxide in the redshifted sources in which the fine structure transition of neutral carbon, [CI], has been detected, in order to measure space-time variation of the fundamental constants.
A. A. Stark, A. Tanna, Ao, Barvainis, Berengut, Bertoldi, Blain, Blain, Bothwell, Casey, Cooksy, Coppin, Cowie, Cox, Curran, Curran, Daddi, Daddi, Danielson, De Breuck, De Breuck, Downes, Downes, Emonts, Engargiola, F. E. Koch, Frayer, Frayer, Frayer, Garrett, Genzel, Gerin, Greve, Hainline, Henkel, Ikeda, Iono, Iono, Israel, Ivison, J. C. Berengut, J. K. Webb, Kanekar, Klamer, Klein, Kneib, Lestrade, Lestrade, Levshakov, Levshakov, Maiolino, Maiolino, Murphy, Murphy, Ofek, Ohta, Ojha, Omont, Papadopoulos, Papadopoulos, Papadopoulos, Pety, Riechers, Riechers, Riechers, S. J. Curran, Scoville, Sheth, Solomon, Spergel, Stutzki, Tacconi, Tacconi, Uzan, V. V. Flambaum, Walter, Walter, Weiß, Weiß, Weiß, White, Willott, Yamamoto, Yan   +83 more
core   +1 more source

Stationary and impulsive injection of electron beams in converging magnetic field [PDF]

, 2009
In this work we study time-dependent precipitation of an electron beam injected into a flaring atmosphere with a converging magnetic field by considering collisional and Ohmic losses with anisotropic scattering and pitch angle diffusion.
Siversky, Taras V., Zharkova, Valentina V.   +1 more
core   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source