Results 1 to 10 of about 11,558 (116)

Quiet Sun magnetic fields: an observational view

Living Reviews in Solar Physics, 2019
The quiet Sun is the region of the solar surface outside of sunspots, pores, and plages. In continuum intensity it appears dominated by granular convection.
David Orozco Suarez
exaly   +3 more sources

Placing limits on long-term variations in quiet-Sun irradiance and their contribution to total solar irradiance and solar radiative forcing of climate [PDF]

Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2020
William Ball, Mike Lockwood
exaly   +2 more sources

Solar-cycle and Latitude Variations in the Internetwork Magnetism

The Astrophysical Journal, 2023
The importance of the quiet-Sun magnetism is that it is always there to a greater or lesser extent, being a constant provider of energy, independently of the solar cycle phase. The open questions about the quiet-Sun magnetism include those related to its
J. C. Trelles Arjona, M. J. Martínez González, B. Ruiz Cobo   +2 more
doaj   +1 more source

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, Divya Oberoi, Ayan Biswas   +2 more
doaj   +1 more source

A New Component from the Quiet Sun from Radio to Gamma Rays: Synchrotron Radiation by Galactic Cosmic-Ray Electrons

The Astrophysical Journal, 2023
The quiet Sun, i.e., in its nonflaring state or nonflaring regions, emits thermal radiation from radio to ultraviolet. The quiet Sun also produces nonthermal radiation observed in gamma rays due to interactions of Galactic cosmic rays (GCRs) with the ...
Elena Orlando, Vahe’ Petrosian, Andrew Strong   +2 more
doaj   +1 more source

Transport of Cosmic-Ray Electrons from 1 au to the Sun

The Astrophysical Journal, 2023
Gamma rays are produced by cosmic-ray (CR) protons interacting with the particles at the solar photosphere and by CR electrons and positrons (CRes) via inverse Compton scattering of solar photons.
Vahé Petrosian, Elena Orlando, Andrew Strong   +2 more
doaj   +1 more source

Fleeting Small-scale Surface Magnetic Fields Build the Quiet-Sun Corona

The Astrophysical Journal Letters, 2023
Arch-like loop structures filled with million Kelvin hot plasma form the building blocks of the quiet-Sun corona. Both high-resolution observations and magnetoconvection simulations show the ubiquitous presence of magnetic fields on the solar surface on ...
L. P. Chitta, S. K. Solanki, J. C. del Toro Iniesta, J. Woch, D. Calchetti, A. Gandorfer, J. Hirzberger, F. Kahil, G. Valori, D. Orozco Suárez, H. Strecker, T. Appourchaux, R. Volkmer, H. Peter, S. Mandal, R. Aznar Cuadrado, L. Teriaca, U. Schühle, D. Berghmans, C. Verbeeck, A. N. Zhukov, E. R. Priest   +21 more
doaj   +1 more source

The dynamic chromosphere at millimeter wavelengths

Frontiers in Astronomy and Space Sciences, 2022
The chromosphere is one of the most complex and dynamic layers of the solar atmosphere. The dynamic phenomena occur on different spatial and temporal scales, not only in active regions but also in the so-called quiet Sun.
Alexander Nindos, Spiros Patsourakos, Shahin Jafarzadeh, Shahin Jafarzadeh, Masumi Shimojo, Masumi Shimojo   +5 more
doaj   +1 more source

Quantifying and containing the curse of high resolution coronal imaging [PDF]

Annales Geophysicae, 2008
Future missions such as Solar Orbiter (SO), InterHelioprobe, or Solar Probe aim at approaching the Sun closer than ever before, with on board some high resolution imagers (HRI) having a subsecond cadence and a pixel area of about (80 km)2 at the Sun ...
V. Delouille, P. Chainais, J.-F. Hochedez   +2 more
doaj   +1 more source

Chromosphere of the quiet Sun

Astronomy & Astrophysics
Context. The couplings between the photosphere, chromosphere, and corona in the quiet Sun (QS) are governed by a complex interplay between magnetic structuring, heating, mass-loading, and radiative cooling.
Noraz Q., Carlsson M., Aulanier G.
doaj   +3 more sources