Results 101 to 110 of about 3,875 (223)

Current sheets in the solar corona : formation, fragmentation and heating

, 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
core  

Evaluating a proxy of the local entropy production rate on the solar photosphere [PDF]

, 2019
The evaluation of the entropy production rate on the solar photosphere and its probability distribution are the key issues for studying the non-equilibrium dynamics of the solar convection.
Consolini G., Penza V., Viavattene G., Del Moro D., Giovannelli L., Giannattasio F., Berrilli F.   +6 more
core   +1 more source

Horizontal magnetic fields in the solar photosphere

Astronomy Reports, 2009
15 pages, 7 figures, published by Astronomicheskii Zhurnal (in Russian) and Astronomy Reports (in English)
openaire   +2 more sources

Multi-height probing of horizontal flows in the solar photosphere

Astronomy & Astrophysics
Context. Optical flow methods aim to infer horizontal (transverse, in the general case) velocities in the solar atmosphere from the temporal changes in maps of physical quantities, such as intensity or magnetic field.
Kostić T., Milić I., Rempel M., Welsch B., Kazachenko M., Asensio Ramos A., Tremblay B.   +6 more
doaj   +1 more source

The investigation of quasi-separatrix layers in solar magnetic fields

, 2011
The structure of the magnetic field is often an important factor in many energetic processes in the solar corona. To determine the topology of the magnetic field features such as null points, separatrix surfaces, and separators must be found.
Restante, Anna Lisa
core  

MgIb(2) bright features in the solar photosphere

, 2000
The magnetic network is a key component of solar irradiance and of the energy transport toward the corona. These network structures are associated in the photosphere with bright magnetic elements, whose dynamics is determined by granulation.
Florio, A, Berrilli, F, Bruno, R, PIETROPAOLO, Ermanno, Consolini, G   +4 more
core  

Case Studies on Pre-eruptive X-class Flares using R-value in the Lower Solar Atmosphere

The Astrophysical Journal
The R -value is a measure of the strength of photospheric magnetic polarity inversion lines in active regions (ARs). This work investigates the possibility of a relation between R -value variations and the occurrence of X-class flares in ARs, not in the ...
Shreeyesh Biswal, Marianna B. Korsós, Manolis K. Georgoulis, Alexander Nindos, Spiros Patsourakos, Robertus Erdélyi   +5 more
doaj   +1 more source

G-band spectral synthesis and diagnostics of simulated solar magneto-convection

, 2004
Realistic simulations of radiative magneto-convection in the solar (sub)photosphere are used for a spectral synthesis of Fraunhofer's G band, which is dominated by spectral lines from the CH molecule.
Shelyag, S., S. K. Solanki, Vögler, Alexander, Berdyugina, S., Berdyugina, Svetlana, Solanki, S., M. Schüssler, Vögler, A., Solanki, S. K., Schüssler, M., Shelyag, Sergiy, Solanki, Sami K., Schüssler, Manfred, A. Vögler, S. Shelyag, S. V. Berdyugina   +15 more
core   +1 more source

A NUMERICAL APPROACH TO OHMIC LOSSES ASSESSMENT IN CONCENTRATING PHOTOVOLTAIC SYSTEMS

, 2012
It is well known that concentrator solar cells operating under concentration experience a number of physical effects which affect their performances. In particular, ohmic losses can determine a noticeable performance worsening of concentrator solar cells.
Pasquini, Matteo
core  

The Gondola for the Sunrise iii Balloon-Borne Solar Observatory

Publisher Copyright: © The Author(s) 2025.Sunrise iii is a balloon-borne solar observatory dedicated to investigating the physics governing the magnetism and dynamics in the lower solar atmosphere.
Korpi-Lagg, Andreas, Feller, Alex, Smitha, H. N., Bernasconi, Pietro, Bell, Alexander, Carpenter, Michael, Orozco Suárez, David, Schulze, Erich, Raouafi, Nour, Grauf, Bianca, Álvarez-Herrero, Alberto, Eaton, Harry, Gandorfer, Achim, Palo, Geoffrey, Katsukawa, Yukio, Martínez Pillet, Valentín, Carkhuff, Bliss, Vourlidas, Angelos, Young, Daniel, Coker, Robert, Riethmüller, Tino L., Berkefeld, Thomas, Solanki, Sami K., Kubo, Masahito, del Toro Iniesta, Jose Carlos   +24 more
core   +1 more source