Results 51 to 60 of about 20,006 (198)

Superconducting Terahertz Receivers for Space and Ground-based Radio Astronomy [PDF]

, 2020
The main task of the RFBR_BRICS project 'Superconducting terahertz receivers for space and ground radio astronomy' is the development of terahertz technologies and the creation of superconductor-insulator-superconductor (SIS) receivers with quantum ...
Andrey Baryshev, Wang, Huabing, Shi, Sheng Cai, Baryshev, Andrey, Michael Fominsky, Lyudmila Filippenko, Rudakov, Kirill, Fominsky, Michael, Fourie, Coenrad, Jacques Lepine, Valery Koshelets, Kirill Rudakov, Huabing Wang, Koshelets, Valery, Sheng-Cai Shi, Lepine, Jacques, Filippenko, Lyudmila, Coenrad Fourie   +17 more
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Unveiling the power of multimodal large language models for radio astronomical image understanding and question answering

Machine Learning: Science and Technology
Although multimodal large language models (MLLMs) have shown remarkable achievements across various scientific domains, their applications in radio astronomy remain largely unexplored.
Fuyong Zhao, Yuyang Li, Zhenyu Liu, Panfeng Chen, Cunshi Wang, Jifeng Liu, Hui Li, Yanhao Wang   +7 more
doaj   +1 more source

Neural cross-correlation for radio astronomy [PDF]

, 2010
Includes abstract.Includes bibliographical references (leaves 56-62).Correlation engines are essential elements of most signal processing systems.
Ngongoni, Chipo Nancy
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PURIFY: a new algorithmic framework for next-generation radio-interferometric imaging [PDF]

, 2014
In recent works, compressed sensing (CS) and convex opti- mization techniques have been applied to radio-interferometric imaging showing the potential to outperform state-of-the-art imaging algorithms in the field. We review our latest con- tributions [1,
Wiaux, Yves; id_orcid, Yves Wiaux, Jason D. McEwen, Carrillo, Rafael E, McEwen, Jason, Carrillo, Rafael, Rafael E. Carrillo, McEwen, Jason D, Wiaux, Yves   +8 more
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SEASONAL VARIATIONS OF THE IONOSPHERE SCINTILLATIONS PARAMETERS OBTAINED FROM THE LONG OBSERVATIONS OF THE POWER COSMIC RADIO SOURCES AT THE DECAMETER WAVE RANGE

Odessa Astronomical Publications, 2016
Observations of the four power cosmic radio sources were carried out on the radio telescope (RT) URAN-4 during 1987-1990 and 1998-2007 at the frequencies 20 and 25 MHz.
O. A. Lytvynenko, S. K. Panishko
doaj   +1 more source

GPU-based acceleration of radio interferometry point source visibility simulations in the MeqTrees framework [PDF]

, 2013
Modern radio interferometer arrays are powerful tools for obtaining high resolution images of low frequency electromagnetic radiation signals in deep space.
Baxter, Richard, Baxter, Richard Jonathan   +1 more
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An Analysis of Embedding Impedance for Q-Band Waveguide Gunn Oscillator With Resonance Post [PDF]

Journal of Astronomy and Space Sciences, 2001
The oscillation frequency tuning range of waveguide Gunn oscillator and its stability depend sensitively on the dimensions of the resonator. Therefore the embedding impedances with the various dimensions of the resonator for Q-band (33~50 GHz) Gunn ...
Hyungjoo Kim, Seogtae Han, Taiseong Kim, Kwangdong Kim, Changhoon Lee, Moonhee Chung, Yonggi Kim   +6 more
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THE STUDY OF EXTRAGALACTIC SOURCES 3C 446 AND 3C 345 WITH USING THE SINGULAR SPECTRUM AND WAVELET ANALYSIS

Odessa Astronomical Publications, 2016
We investigated the data of monitoring of flux density of extragalactic sources 3С446 and 3C345, which was held on 26-meter radio telescope of University of Michigan at frequencies 14.5, 8 and 4.8 GHz.
G. I. Donskykh, M. I. Ryabov, A. L. Sukharev, M. F. Aller   +3 more
doaj   +1 more source

What is Radio Astronomy? [PDF]

This website contains information on radio astronomy, the NRAO, how telescopes work, the history and discovery of radio astronomy, and the radio communication process.

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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