Results 21 to 30 of about 107,429 (338)
Two dimensional time evolution of beam-plasma instability in the presence of binary collisions [PDF]
, 2016 Energetic electrons produced during solar flares are known to be responsible for generating solar type III radio bursts. The radio emission is a byproduct of Langmuir wave generation via beam-plasma interaction and nonlinear wave-wave and wave-particle ...
Kontar, Eduard +3 more
core +2 more sources
Structure of the Solar Atmosphere: A Radio Perspective
Frontiers in Astronomy and Space Sciences, 2020 Solar radio emission has been providing information about the Sun for over half a century. In order to fully exploit this information, one needs to have a broader view of the solar atmosphere, which cannot be provided by radio observations alone.
Costas E. Alissandrakis
doaj +1 more source
On the association of solar radio emission and solar prominences. [PDF]
The Astronomical Journal, 1956 Prominence cinematograms made at Sacramento Peak and climax in the years 1949?55 have been examined and compared with the solar radio records at 167 Mc/s. No close connexion was found between limb events and radio events, but some eruptions were found to be associated with simultaneous radio bursts. Three such cases are discussed in detail.
JP Wild, H Zirin
openaire +1 more source
Periodic Bursts of Coherent Radio Emission from an Ultracool Dwarf [PDF]
, 2007 We report the detection of periodic (p = 1.96 hours) bursts of extremely bright, 100% circularly polarized, coherent radio emission from the M9 dwarf TVLM 513-46546. Simultaneous photometric monitoring observations have established this periodicity to be
A. Antonova +13 more
core +2 more sources
Multiwave Siberian Radioheliograph
Solar-Terrestrial Physics, 2020 The article discusses characteristics, fundamental and applied tasks of the Siberian Radioheliograph that is developed at the ISTP SB RAS Radio Astrophysical Observatory and spectropolarimetric complex that measures the total flux of solar radio emission.
Altyntsev A.T. +13 more
doaj +1 more source
The Astrophysical Journal, 2023 Understanding electron acceleration associated with magnetic energy release at subsecond scales presents major challenges in solar physics. Solar radio spikes observed as subsecond, narrow-bandwidth bursts with Δ f / f ∼ 10 ^−3 –10 ^−2 are indicative of ...
Daniel L. Clarkson +5 more
doaj +1 more source
A Search for Active Galactic Nuclei in Sc Galaxies with H II Spectra [PDF]
, 2002 (Abridged) We have searched for nuclear radio emission from a statistically complete sample of 40 Sc galaxies within 30 Mpc that are optically classified as star-forming objects, in order to determine whether weak AGNs might be present.
Baars J. W. M. +5 more
core +2 more sources
The Astrophysical Journal Letters, 2023 Many particles are accelerated during solar flares. To understand the acceleration and propagation processes of electrons, we require the pitch-angle distributions of the particles.
Keitarou Matsumoto +2 more
doaj +1 more source
Electromagnetic Simulations of Solar Radio Emissions [PDF]
Journal of Geophysical Research: Space Physics, 2019 AbstractSolar radio emissions are electromagnetic waves emitted in the solar wind as a consequence of electron beams accelerated during solar flares or interplanetary shocks such as interplanetary coronal mass ejections. Different physical mechanisms have been suggested to describe their origin. A good understanding of the emission process would enable
Henri, Pierre +4 more
openaire +2 more sources
Solar Radio Bursts Associated with In Situ Detected Energetic Electrons in Solar Cycles 23 and 24
Universe, 2022 The first comprehensive analysis between the in situ detected solar energetic electrons (SEEs) from ACE/EPAM satellite and remotely observed radio signatures in solar cycles (SCs) 23 and 24 (1997–2019) is presented.
Rositsa Miteva +2 more
doaj +1 more source