Results 61 to 70 of about 107,429 (338)

Quiet solar corona: daily images at 8.8–10.7 cm wavelengths

Solar-Terrestrial Physics, 2023
We discuss results of test observations of the 3–6 GHz range array of the Siberian Radio Heliograph (SRH). A method for calibrating brightness temperatures of images was verified using measurements of the brightness temperature of the quiet Sun at a ...
Altyntsev A. T., Globa M. V., Meshalkina N. S.   +2 more
doaj   +1 more source

Optimized gyrosynchrotron algorithms and fast codes [PDF]

, 2010
Gyrosynchrotron (GS) emission of charged particles spiraling in magnetic fields plays an exceptionally important role in astrophysics. In particular, this mechanism makes a dominant contribution to the continuum solar and stellar radio emissions. However,
Alexey A. Kuznetsov, Eidman, Eidman, Gregory D. Fleishman, Klein, Melrose   +5 more
core   +1 more source

The Influence of Annealing on the Sb Layer in the Synthesis of [001]‐Oriented Sb2Se3 Film for Photoelectrochemical Hydrogen Gas Generation

Advanced Functional Materials, EarlyView.
[001]‐oriented Sb2Se3 film with improved crystallinity and adjusted composition is achieved via a new thermal treatment approach consisting of preliminary annealing of the Sb layer before its selenization. The findings of this work demonstrate enhanced charge carriers' transportation, a stable performance, and an improvement of H2 generation from ...
Magno B. Costa, Moisés A. de Araújo, Joaquim Puigdollers, Pablo Ortega, Teresa Andreu, Cristobal Voz, Edgardo Saucedo, Lucia H. Mascaro   +7 more
wiley   +1 more source

Particle-in-cell Simulation of Current-driven Solar Type III Radiation and Whistler Waves in a Core–strahl Plasma: Relevance to PSP and Other Space Observations

The Astrophysical Journal
The aim of this paper is to demonstrate that electron current oscillations may generate electromagnetic waves as type III radiation and whistler waves without the involvement of the classical plasma emission via the coalescence of waves. Particle-in-cell
Konrad Sauer, Kaijun Liu
doaj   +1 more source

A Survey for Transient Astronomical Radio Emission at 611 MHz

, 2003
We have constructed and operated the Survey for Transient Astronomical Radio Emission (STARE) to detect transient astronomical radio emission at 611 MHz originating from the sky over the northeastern United States.
Amy S., Askar’yan G. A., Askar’yan G. A., B. E. Corey, C. A. Katz, C. B. Moore, Hankins T., J. N. Hewitt, Kahn F., Mattox J., Usov V. V.   +10 more
core   +1 more source

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

Advanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang, Max Gießübel, Pankaj Dharpure, Andrea Albert, Vira Niestierkina, Paul Mulvaney, Mukundan Thelakkat, Jürgen Köhler   +7 more
wiley   +1 more source

A TimesNet-based Real-time Forecasting System for the F10.7 Index Using DRAO and Chinese Langfang Datasets

The Astrophysical Journal Supplement Series
In this paper, we construct the DRAO univariate dataset, the DRAO multivariate dataset, and the Chinese Langfang dataset. We develop and compare five deep learning models (TimesNet, iTransformer, PatchTST, N -Beats, BiGRU) and a benchmark artificial ...
Xuebao Li, Xiaojia Ji, Yanfang Zheng, Zixian Wu, Xuran Ma, Jinfang Wei, Liang Dong, Zamri Zainal Abidin, Shuainan Yan, Hongwei Ye, Dongyang Wang, Xusheng Huang, Yongshang Lv, Shunhuang Zhang, Honglei Jin, Tarik Abdul Latef, Noraisyah Mohamed Shah, Mohamadariff Othman, K.A. Noordin   +18 more
doaj   +1 more source

ON POLARIZATION PARAMETERS VARIABILITY OF OBSERVED GALACTIC RADIO EMISSION

Odessa Astronomical Publications, 2017
Correlations between the solar activity and the observed polarization of the galactic radio emission are discussed.
O. M. Kovalchuk, V. A. Razin, A. I. Teplykh   +2 more
doaj   +1 more source

Sawtooth oscillations in solar flare radio emission [PDF]

Astronomy & Astrophysics, 2001
For the first time, we found a spectral fine structure of solar meter wave radio burst emission which can be due to sawtooth oscillations in the hot flare plasma. This finding newly underlines an analogy between coronal and laboratory plasma processes. The sawteeth occur during the impulsive flare phase hard X-ray emission and consist of a sequence of ...
A. Klassen, H. Aurass, G. Mann
openaire   +1 more source

Emergence of Light‐Transforming Layered Hybrid Halide Perovskites

Advanced Functional Materials, EarlyView.
The emerging class of light‐transforming layered halide perovskite materials is reviewed, outlining challenges for their development and perspectives toward application in the future. Abstract Layered hybrid halide perovskites (LHPs) have attracted considerable attention in optoelectronics.
Ghewa AlSabeh, Jovana V. Milić
wiley   +1 more source