Results 11 to 20 of about 888,183 (252)

Cryogenic Systems for Astronomical Research in the Special Astrophysical Observatory of the Russian Academy of Sciences

open access: yesPhotonics, 2023
This article presents the main results and new plans for the development of receivers which are cooled cryogenically to deep cryogenic temperatures and used in optical and radio astronomy research at the Special Astrophysical Observatory of the Russian ...
Yurii Balega   +17 more
doaj   +1 more source

The Tian Ma 65-m Telescope Automatic Early Warning System

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The Tian Ma Radio Telescope (TMRT), which is mainly used for deep space exploration and radio astronomy observations, is the largest fully steerable radio telescope in Asia. For promoting the automation of the telescope, an automatic early warning system
Shang-Guan Wei-Hua   +5 more
doaj   +1 more source

Simulation of Small Radio Telescope Antenna Parameters at Frequency of 1.42 GHz

open access: yesIraqi Journal of Physics, 2022
The paper presents an overview of theoretical aspects of small radio telescope antenna parameters. The basic parameters include antenna beamwidth, antenna gain, aperture efficiency, and antenna temperature.
Uday E Jallod   +2 more
doaj   +1 more source

Can the China's fast telescope detect extraterrestrial von-Neumann probes? [PDF]

open access: yesSerbian Astronomical Journal, 2021
In the present paper we consider the Type-2.x and Type-3.x extraterrestrial von- Neumann probes and study the problem of their detectability by the world's largest single-dish radio telescope: the Five-hundred-meter Aperture Spherical Radio ...
Osmanov Z.N.
doaj   +1 more source

New Cable Delay Measurement System for VGOS Stations

open access: yesSensors, 2022
This paper presents the new cable delay measurement system (CDMS) designed at Yebes Observatory (IGN, Spain), which is required for the VLBI Global Observing System (VGOS) stations.
Pablo García-Carreño   +6 more
doaj   +1 more source

A search for fast radio bursts associated with gamma-ray bursts using the YNAO 40-m radio telescope [PDF]

open access: yesSerbian Astronomical Journal, 2023
We report on the search results of Fast Radio Bursts (FRBs) from three Gamma- ray Bursts (GRBs) at 2256 MHz using the 40-m radio telescope located at the YunNan Astronomical Observatory (YNAO).
Zhang Y.F.   +7 more
doaj   +1 more source

Observation of radio emissions from electron beams using an ice target [PDF]

open access: yesEPJ Web of Conferences, 2019
To observe high energy cosmogenic neutrinos above 50 PeV, the large neutrino telescope ARA is being built at the South Pole. The ARA telescope detects neutrinos by observing radio signals by the Askaryan effect.
Mase Keiichi   +14 more
doaj   +1 more source

FAST: Its Scientific Achievements and Prospects

open access: yesThe Innovation, 2020
FAST is the largest single-dish radio telescope in the world. The characteristics of FAST are presented and analyzed in the context of the parameter space to show how FAST science achievements are affected.
Lei Qian   +5 more
doaj   +1 more source

Radio Frequency Interference Monitoring at Sardinia Radio Telescope [PDF]

open access: yes, 2018
Radio frequency interference monitoring is a crucial task to protect the radio astronomical observations from artificial signals. This task started at the Sardinia Radio Telescope in the early 2000s and still successfully continues by monitoring the ...
BOLLI, Pietro   +5 more
core   +1 more source

Synthetic aperture radio telescopes [PDF]

open access: yesIEEE Signal Processing Magazine, 2010
Next-generation radio telescopes will be much larger, more sensitive, have a much larger observation bandwidth, and will be capable of pointing multiple beams simultaneously. Obtaining the sensitivity, resolution, and dynamic range supported by the receivers requires the development of new signal processing techniques for array and atmospheric ...
Ronny Levanda, Amir Leshem
openaire   +2 more sources

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