Results 31 to 40 of about 1,965,723 (227)

A novel fine spectral structure of solar radio bursts with periodic beaded stripes observed by CBSm of CMP-II [PDF]

open access: yesScience China Physics Mechanics and Astronomy
A novel fine spectral structure in solar radio bursts has been discovered using the Chashan broadband solar radio spectrometer at meter wavelengths (CBSm), an instrument of the Chinese Meridian Project-Phase II (CMP-II).
Chuan-Yang Li   +13 more
semanticscholar   +1 more source

HIGH-FREQUENCY CUTOFF IN TYPE III BURSTS

open access: yesOdessa Astronomical Publications, 2016
In this article we report about a group of solar bursts with high-frequency cutoff, observed on 19 August of 2012 near 8:23 UT, simultaneously by three different radio telescopes: the Ukrainian decameter radio telescope (8-33 MHz), the French Nançay ...
A. A. Stanislavsky   +3 more
doaj   +1 more source

Highlights of Solar Observations with Two Brazilian Radio Telescopes

open access: yesBrazilian Journal of Geophysics, 2022
Solar radio emission originates from the solar atmosphere, and basically consists of emission from the quiet Sun, active regions, and flares. The slowly varying emission from the quiet solar atmosphere follows the periodicity of the 11 years Solar Activity Cycle.
openaire   +1 more source

Study of the equatorial ionosphere using the giant metrewave radio telescope (GMRT) at sub-GHz frequencies [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2022
Radio interferometers, which are designed to observe astrophysical objects in the universe, can also be used to study the Earth’s ionosphere. Radio interferometers like the Giant Metrewave Radio Telescope (GMRT) detect variations in ionospheric total ...
S. Mangla, A. Datta
semanticscholar   +1 more source

Identifying 8 mm Radio Brightenings During the Solar Activity Minimum

open access: yes, 2020
Strong solar radio brightenings have been extensively studied in the past, and their correlation to the sunspots and active regions are already well known.
Tornikoski, Merja   +2 more
core   +1 more source

STRUCTURE OF VARIABILITY INDEXES OF COSMIC WEATHER AS APPLIED TO DATA MONITORING OF FLUXES OF RADIO SOURCES AT THE “URAN-4” RADIO TELESCOPE

open access: yesRadio Physics and Radio Astronomy, 2017
Purpose: Investigation of the effects of the influence of solar and geomagnetic activity on the state of the Earth’s upper atmosphere by the method of “transmission through” it with the radiation of cosmic radio sources.
L. I. Sobitniak   +3 more
doaj   +1 more source

Observation and Modeling of Small Spatial Structures of Solar Radio Noise Storms Using the uGMRT [PDF]

open access: yesSolar Physics
One of the most commonly observed solar radio sources in the metric and decametric wavelengths is the solar noise storm. These are generally associated with active regions and are believed to be powered by the plasma emission mechanism.
Surajit Mondal   +4 more
semanticscholar   +1 more source

Solar observing system for radio frequencies 5–120 MHz

open access: yes, 2020
The Aalto University Metsähovi Radio Observatory (MRO) in Finland installed and started operating a new low-frequency solar radio monitoring instrument in October 2017.
Tornikoski, M.   +6 more
core   +1 more source

Solar radioastronomy with the LOFAR (low frequency array) radio telescope [PDF]

open access: yesSPIE Proceedings, 2003
The Low Frequency Array (LOFAR) will be a radio astronomy interferometric array operating in the approximate frequency range 10-240 MHz. It will have a large collecting area achieved using active dipole techniques, and will have maximum baselines of up to 500 km to attain excellent spatial resolution at long wavelengths. The Sun will always be in LOFAR'
Stephen White   +2 more
openaire   +1 more source

Open flux estimates in Saturn's magnetosphere during the January 2004 Cassini-HST campaign, and implications for reconnection rates [PDF]

open access: yes, 2005
During 8–30 January 2004, a sequence of 68 UV images of Saturn's southern aurora was obtained by the Hubble Space Telescope (HST), coordinated for the first time with measurements of the upstream interplanetary conditions made by the Cassini spacecraft ...
Badman, S. V.   +6 more
core   +5 more sources

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