Results 31 to 40 of about 11,539 (164)
Simulating Siberian Radioheliograph response to the quiet Sun
Solar-Terrestrial Physics, 2018 The Siberian Radioheliograph (SRH) correlation plot is the time dependence of the sum of absolute values of complex correlations over all baselines. These plots are built for each operating frequency of SRH.
Lesovoi S.V., Kobets V.S.
doaj +1 more source
The Astrophysical Journal LettersWe present an interpretation of the recent Daniel K. Inouye Solar Telescope (DKIST) observations of propagating wave fronts in the lower solar atmosphere.
Shah Mohammad Bahauddin +7 more
doaj +1 more source
Observations of coronal holes with the Siberian Radioheliograph
Solar-Terrestrial PhysicsMulti-wavelength observations of a coronal hole (CH) with two-dimensional spatial resolution have been made for the first time in the frequency range from 2.8 to 12 GHz.
Globa M. V. +2 more
doaj +1 more source
Magnetic Topology and Loop Statistics in Observed Coronal Holes Using Potential Field Modeling
The Astrophysical JournalPotential field source surface (PFSS) models are widely used to study the solar corona and form the basis for solar wind forecasting, yet they often fail to reproduce observed properties of coronal holes.
Stephan G. Heinemann +2 more
doaj +1 more source
EVIDENCE FOR WAVE HEATING OF THE QUIET-SUN CORONA
The Astrophysical Journal, 2014 Submitted to the Astrophysical ...
Hahn, Michael, Savin, Daniel Wolf
openaire +4 more sources
The Astrophysical JournalOur study of H α line profiles of rapid blue- and redshifted excursions measured with Goode Solar Telescope revealed an asymmetrical three-peak structure present in the blue wing of the H α line, suggesting complex internal velocity fields that may ...
Vasyl Yurchyshyn +6 more
doaj +1 more source
Incoherent Solar Radio Emission
Frontiers in Astronomy and Space Sciences, 2020 Incoherent solar radio radiation comes from the free-free, gyroresonance, and gyrosynchrotron emission mechanisms. Free-free is primarily produced from Coulomb collisions between thermal electrons and ions.
Alexander Nindos
doaj +1 more source
Modulation of Cosmic-Ray Antiprotons in the Heliosphere: Simulations for a Solar Cycle
The Astrophysical Journal, 2023 The precision measurements of galactic cosmic-ray protons from the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics and the Alpha Magnetic Spectrometer are reproduced using a well-established three-dimensional numerical model for ...
O. P. M. Aslam +3 more
doaj +1 more source
Inferring depth-dependent plasma motions from surface observations using the DeepVel neural network
Journal of Space Weather and Space Climate, 2021 Coverage of plasma motions is limited to the line-of-sight component at the Sun’s surface. Multiple tracking and inversion methods were developed to infer the transverse motions from observational data.
Tremblay Benoit +4 more
doaj +1 more source
Cosmogenic radionuclides reveal an extreme solar particle storm near a solar minimum 9125 years BP
Nature Communications, 2022 Cosmogenic radionuclides from ice cores and tree rings indicate that an extreme solar proton event has hit Earth about 9200 years ago. Contrary to expectations, the event occurred during a quiet phase of the Sun within the 11 year solar cycle.
Chiara I. Paleari +12 more
doaj +1 more source