Results 61 to 70 of about 870,817 (352)

Cosmic Magnetism in Centimeter and Meter Wavelength Radio Astronomy [PDF]

, 2017
Magnetic field is ubiquitous in the Universe and it plays essential roles in various astrophysical phenomena, yet its real origin and evolution are poorly known.
T. Akahori, H. Nakanishi, Y. Sofue, Y. Fujita, K. Ichiki, S. Ideguchi, O. Kameya, T. Kudoh, Yukitsugu Kudoh, M. Machida, Yoshimitsu Miyashita, H. Ohno, Takeaki Ozawa, Keitaro Takahashi, M. Takizawa, D. G. Yamazaki   +15 more
semanticscholar   +1 more source

Chemo‐Mechanical Coupling in Hydrogels: Dynamics in the Diffusion‐Limited Regime

Advanced Functional Materials, EarlyView.
A time‐dependent continuum model is developed to capture the transient swelling dynamics of chemo‐mechanical hydrogels. By coupling chemical reactions, solvent transport, and polymer deformation, volume phase transitions, reaction kinetics, and transient mechanical instabilities are analyzed.
Yao Xiong, Aaveg Aggarwal, Monica Olvera de la Cruz   +2 more
wiley   +1 more source

A Design Study of the 400MHz Wide-Band Digital Autocorrelation Spectrometer [PDF]

Journal of Astronomy and Space Sciences, 2002
In this paper, we performed the design study of a wide-band digital autocorrelation spectrometer for the observation study of an extra-galaxy's spectral lines and the survey research of the special radio sources in field of the radio astronomy ...
C. H. Lee, K. D. Kim, S. T. Han, T. S. Kim, H. K. Choi, D. Y. Byun, B. C. Koo   +6 more
doaj   +1 more source

SArdinia Roach2-based Digital Architecture for Radio Astronomy (SARDARA)

, 2018
The Sardinia Radio Telescope (SRT) is a 64-m, fully-steerable single-dish radio telescope that was recently commissioned both technically and scientifically with regard to the basic observing modes...
A. Melis, R. Concu, A. Trois, A. Possenti, A. Bocchinu, P. Bolli, M. Burgay, E. Carretti, P. Castangia, S. Casu, C. Pestellini, A. Corongiu, N. D'amico, E. Egron, F. Govoni, M. N. Iacolina, M. Murgia, A. Pellizzoni, D. Perrodin, M. Pilia, T. Pisanu, A. Poddighe, S. Poppi, I. Porceddu, A. Tarchi, V. Vacca, G. Aresu, M. Bachetti, M. Barbaro, A. Casula, A. Ladu, S. Leurini, F. Loi, S. Loru, P. Marongiu, P. Maxia, G. Mazzarella, C. Migoni, G. Montisci, G. Valente, G. Vargiu   +40 more
semanticscholar   +1 more source

Defects Dynamic in Photo‐Excited CeO2 and their Influence on CO2 Photoreduction

Advanced Functional Materials, EarlyView.
X‐ray photoelectron spectroscopy study under light excitation is presented to track the defect dynamic (Ce4+ to Ce3+) in CeO2. Surface enhanced Raman spectroscopy confirmed the key role of Ce3+ states in controlling charge and energy transfer across the CeO2‐dye molecule interface.
Rambabu Yalavarthi, Shashi B. Mishra, Olivier Henrotte, Emiliano Cortes   +3 more
wiley   +1 more source

THE DAILY 110 MHZ SKY SURVEY (BSA FIAN): ON-LINE DATABASE, SCIENCE AIMS AND FIRST RESULTS OF DATA PROCESSING

Odessa Astronomical Publications, 2016
From 2012 on radio telescope BSA FIAN multi beams diagram was started. It capable at July 2014 daily observing by 96 beams in declination -8 .. 42 degrees in the frequency band 109-111.5 MHz.
V. A. Samodurov, A. E. Rodin, M. A. Kitaeva, E. A. Isaev, D. V. Dumsky, D. D. Churakov, M. O. Manzyuk   +6 more
doaj   +1 more source

Manipulating Ferroelectric Topological Polar Structures with Twisted Light

Advanced Materials, EarlyView.
We demonstrate dynamic control of ferroelectric order in quasi‐2D CsBiNb2O7 using twisted ultraviolet light carrying orbital angular momentum. Our approach harnesses non‐resonant multiphoton absorption and induced strain to modulate topological of ferroelectric polarization textures.
Nimish P. Nazirkar, Viet Tran, Pascal Bassène, Atoumane Ndiaye, Julie Barringer, Jie Jiang, Wonsuk Cha, Ross Harder, Jian Shi, Moussa N'Gom, Edwin Fohtung   +10 more
wiley   +1 more source

DECAMETER PULSARS AND TRANSIENTS SURVEY OF THE NORTHERN SKY. STATUS, FIRST RESULTS, MULTIPARAMETRIC PIPELINE FOR CANDIDATE SELECTION

Odessa Astronomical Publications, 2016
We present the results of processing first 20% of Northern sky pulsars and transients survey using UTR-2 radio telescope. Data processing is done by an automatic pipeline that detects and outputs a large number of transient candidates (usually dispersed ...
V. V. Zakharenko, I. P. Kravtsov, I. Y. Vasylieva, S. S. Mykhailova, O. M. Ulyanov, A. I. Shevtsova, A. O. Skoryk, P. Zarka, O. O. Konovalenko   +8 more
doaj   +1 more source

Frequency Interpolation of LOFAR Embedded Element Patterns Using Spherical Wave Expansion

International Journal of Antennas and Propagation, 2021
This paper describes the use of spherical wave expansion (SWE) to model the embedded element patterns of the LOFAR low-band array. The goal is to reduce the amount of data needed to store the embedded element patterns.
M. J. Arts, D. S. Prinsloo, M. J. Bentum, A. B. Smolders   +3 more
doaj   +1 more source

Characterization of a Low-Frequency Radio Astronomy Prototype Array in Western Australia [PDF]

IEEE Transactions on Antennas and Propagation, 2015
We report characterization results for an engineering prototype of a next-generation low-frequency radio astronomy array. This prototype, which we refer to as the Aperture Array Verification System 0.5 (AAVS0.5), is a sparse pseudorandom array of 16 log ...
A. Sutinjo, T. Colegate, R. Wayth, P. Hall, E. D. L. Acedo, T. Booler, A. Faulkner, Lu Feng, N. Hurley-Walker, B. Juswardy, S. Padhi, N. Razavi-Ghods, M. Sokołowski, S. Tingay, J. B. D. Vaate   +14 more
semanticscholar   +1 more source