Results 31 to 40 of about 1,202,560 (191)
Current sheets in the solar corona : formation, fragmentation and heating [PDF]
, 2011 In this thesis we investigate current sheets in the solar corona. The well known 1D model for the tearing mode instability is presented, before progressing to 2D where we introduce a non-uniform resistivity.
Bowness, Ruth
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Characterizing the Spectral Structure of Weak Impulsive Narrowband Quiet Sun Emissions
The Astrophysical Journal, 2023 Weak Impulsive Narrowband Quiet Sun Emissions (WINQSEs) are a newly discovered class of radio emission from the solar corona. These emissions are characterized by their extremely impulsive, narrowband, and ubiquitous nature.
Surajit Mondal +3 more
doaj +1 more source
Micro-events in the active and quiet solar corona [PDF]
Advances in Space Research, 2003 The content of hot material in the corona is not constant. Soft X-ray and high-temperature EUV line observations show that new material, apparently heated and evaporated from the chromosphere, is frequently injected into the corona both in active and quiet regions. Active regions are found to exhibit transient brightenings, termed here microflares, due
Benz, Arnold O., Grigis, Paolo C.
openaire +2 more sources
Propagation and damping of MHD waves in the solar atmosphere [PDF]
, 2015 Quasi-periodic disturbances have been observed in the outer solar atmosphere for many years. Although first interpreted as upflows (Schrijver et al.
Kiddie, Greg
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A new approach to the maser emission in the solar corona [PDF]
, 2015 Aims. The electron plasma frequency ωpe and electron gyrofrequency Ωe are two parameters that allow us to describe the properties of a plasma and to constrain the physical phenomena at play, for instance, whether a maser instability develops.
Regnier, Stephane, S. Régnier
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Study of Radio Transients from the Quiet Sun during an Extremely Quiet Time
The Astrophysical Journal, 2023 In this work, we study a class of recently discovered meter-wave solar transients referred to as Weak Impulsive Narrowband Quiet Sun Emission (WINQSEs).
Surajit Mondal +2 more
doaj +1 more source
Small scale energy release driven by supergranular flows on the quiet Sun [PDF]
, 2007 In this article we present data and modelling for the quiet Sun that strongly suggest a ubiquitous small-scale atmospheric heating mechanism that is driven solely by converging supergranular flows. A possible energy source for such events is the power
Diver, D., Potts, H.E., Khan, J.
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Multi-scale statistical analysis of coronal solar activity [PDF]
Nonlinear Processes in Geophysics, 2016 Multi-filter images from the solar corona are used to obtain temperature maps that are analyzed using techniques based on proper orthogonal decomposition (POD) in order to extract dynamical and structural information at various scales.
D. Gamborino +2 more
doaj +1 more source
High-frequency Decayless Waves with Significant Energy in Solar Orbiter/EUI Observations
The Astrophysical Journal, 2023 High-frequency wave phenomena present a great deal of interest as one of the possible candidates to contribute to the energy input required to heat the corona as a part of the alternating current heating theory.
Elena Petrova +3 more
doaj +1 more source
Observational signatures of waves and flows in the solar corona [PDF]
, 2015 DM acknowledges support of a Royal Society University Research Fellowship and a KU Leuven Research Council senior research fellowship (SF/12/008). The research leading to these results has also received funding from the European Commission Seventh ...
Antolin, Patrick +3 more
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