Results 31 to 40 of about 14,709 (209)
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
The Magnetic Field in the Solar Atmosphere [PDF]
, 2014 This publication provides an overview of magnetic fields in the solar atmosphere with the focus lying on the corona. The solar magnetic field couples the solar interior with the visible surface of the Sun and with its atmosphere.
Solanki, Sami K. +2 more
core +2 more sources
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.
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A nanoflare heating model for the quiet solar corona [PDF]
Astronomy & Astrophysics, 2001 11 pages, 7 figures, updated spelling of 1st autor's ...
Mitra-Kraev, U., Benz, A. O.
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Tracking Nonradial Outflows in Extreme Ultraviolet and White Light Solar Images
The Astrophysical Journal, 2023 Understanding the solar corona requires knowledge of its dynamics through its various layers and subsequent connectivity to the heliosphere. This requires understanding the nature of the outflows and the physical transitions through the middle corona (∼1.
Nathalia Alzate +2 more
doaj +1 more source
Probing the Quiet Solar Atmosphere from the Photosphere to the Corona [PDF]
Solar Physics, 2018 We investigate the morphology and temporal variability of a quiet Sun network region in different solar layers. The emission in several EUV spectral lines through both raster and slot time series, recorded by EIS/Hinode is studied along with H$ $ observations and high resolution spectropolarimetric observations of the photospheric magnetic field.
Ioannis Kontogiannis +3 more
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First Radio Evidence for Impulsive Heating Contribution to the Quiet Solar Corona [PDF]
The Astrophysical Journal Letters, 2020 Abstract This Letter explores the relevance of nanoflare-based models for heating the quiet Sun corona. Using meterwave data from the Murchison Widefield Array, we present the first successful detection of impulsive emissions down to flux densities of ∼mSFU, about two orders of magnitude weaker than earlier attempts.
Surajit Mondal, Divya Oberoi, Atul Mohan
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Link between the chromospheric network and magnetic structures of the corona [PDF]
, 2006 Recent work suggested that the traditional picture of the corona above the quiet Sun being rooted in the magnetic concentrations of the chromospheric network alone is strongly questionable.
Beck +17 more
core +2 more sources
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
Radio impulsive events in quiet solar corona and Axion Quark Nugget Dark Matter [PDF]
Physical Review D, 2020 maths the published version (Phys. Rev. D). Additional comments on non- Poissonian clustering processes and on suppression of the impulsive radio events at low frequencies below 98 ...
Ge, Shuailiang +3 more
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