Results 101 to 110 of about 606 (135)

From hand-ground lenses to Xihe solar space missions: an interview of Professor Cheng Fang. [PDF]

Natl Sci Rev
Li C.
europepmc   +1 more source

RHESSI and Radio Imaging Observations of Microflares E2.3-0011-04

, 2005
We present the analysis of five microflares, three observed simultaneously by RHESSI in hard X-rays and Nobeyama RadioHeliograph (NoRH) in microwaves (17 GHz) and two observed by RHESSI and Nancay RadioHeliograph (NRH) at metric wavelengths (150-450 MHz).
Garaimov, V. I., Kundu, M. R., Schmahl, E. J., Trottet, G., Grigis, P.   +4 more
core  

A NEW PROJECT OF 8-CM RADIOHELIOGRAPH

A NEW PROJECT OF 8-CM RADIOHELIOGRAPH
An 8-cm radio heliograph is planned by adding 17 N-S elements to the existing interferometer. The mapping speed will be one frame in 40 seconds. It is characterized by its ability of correcting phase errors by data processing.
openaire   +1 more source

Baseline measurement for Chinese spectral radioheliograph

2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), 2014
The Chinese Spectral Radioheliograph (CSRH) is a solar-dedicated synthesis aperture telescope. The maximum baseline length determines the high resolution of synthetic aperture. With its antenna array aligned in a shape of triple-spiral arms spread in an area of about 10 square kilometers.
Donghao Liu
exaly   +5 more sources

Some of the next articles are maybe not open access.

Related searches:

The mark III Nan�ay radioheliograph The Radioheliograph Group

Solar Physics, 1983
A north-south array has been added to the Mark II Nancay Radioheliograph (Radioheliograph Group, 1977). This instrument gives at 169 MHz two one-dimensional images of the Sun in the east-west and north-south directions including measurement of the circular polarization ratio. The main performances of this instrument are high space and time resolutions,
A Raoult, M Pick, G Trottet
exaly   +2 more sources

The Chinese Spectral Radioheliograph—CSRH

Earth, Moon and Planets, 2008
A new Chinese radioheliograph project (CSRH) at multiple frequencies in the decimetric to centimeter wave range with ∼100 antennas of 2–5 m is proposed. A prototype study of 2-element interferometer was tested for overall design. The site survey for the CSRH array is carried out and a radio quiet region in Inner Mongolia of China appears promising.

exaly   +2 more sources

The nançay radioheliograph

, 2008
The Nancay Radioheliograph has been upgraded in order to provide high time resolution 2D images of the soler corona. This is due to its new digital correlator (Stokes I and V, 576 channels). Calibration has also been improved. The multifrequency operation remains almost unchanged. It allows simultaneous observations of up to 10 frequencies in the range
Alain Kerdraon, Jean-Marc Delouis
openaire   +2 more sources

EMC Study in Mingantu Spectral Radioheliograph

2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC), 2018
There are always the Electromagnetic compatibility (EMC) problems where the electromagnetic phenomenon exists. EMC is an inescapable problem in radio astronomy and also common problem for radio astronomical telescopes.
Yihua Yan
exaly   +2 more sources

The Polarization Performance of MingantU SpEctral Radioheliograph

2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC), 2018
The MUSER(MingantU SpEctral Radioheliograph) is a new radio interferometric array for solar delicated, which will be used to image the Sun with high spatial resolution, high time resolution and high frequency resolution. The antenna works with ultra-wide band dual-circular polarized feed to obtain high quality dual circular polarized image of the Sun ...
Yihua Yan
exaly   +2 more sources

The Nancay multifrequency radioheliograph: New observations

Advances in Space Research, 1988
Abstract The Nancay radioheliograph provides images of the sun on a north-south baseline at up to five frequencies between 150 and 450 MHz with time resolution up to 0.1 s. East-west images are also obtained at 164 MHz with a time resolution up to 0.02 s. This paper briefly presents the performances of the instrument and the observing modes.
G Trottet
exaly   +2 more sources