Results 101 to 110 of about 958,871 (209)
Near-ultraviolet Spectropolarimetry as a Tracer of Magnetic Markers of Flux Rope Formation
The Astrophysical JournalWe investigate the suitability of the combined spectral windows of Mg ii h and k and the Fe ii lines around 261 nm as magnetic markers of filament formation.
David Afonso Delgado +3 more
doaj +1 more source
Solar wind Acceleration from the Upper Chromosphere to the Corona in Coronal Hole Regions [PDF]
, 1998 The dynamic behavior of the plasma in the chromosphere/transition region /inner corona is vital for the acceleration of the solar wind. With new theoretical descriptions of the solar atmosphere and corona, and the increased observational possibilities ...
Esser, Ruth
core
The differential rotation of the chromosphere and the quiet chromosphere in the falling and rising period of a solar cycle [PDF]
The full-disk chromosphere was routinely monitored in the He I 10830\AA\, line at the National Solar Observatory/Kitt Peak from 2004 Nov. to 2013 March, and thereby, synoptic maps of He I line intensity from Carrington rotations 2032 to 2135 were ...
Xu, JC, Li, KJ
core +1 more source
Solar Flare Ribbon Fronts. II. Evolution of Heating Rates in Individual Flare Footpoints
The Astrophysical JournalSolar flare ribbon fronts appear ahead of the bright structures that normally characterize solar flares, and can persist for an extended period of time in spatially localized patches before transitioning to “regular” bright ribbons. They likely represent
Graham S. Kerr +3 more
doaj +1 more source
The Astrophysical JournalA proposed mechanism for solar chromospheric heating is magnetohydrodynamic waves propagating upward along magnetic field lines and dissipating their energy in the chromosphere.
Mayu Koyama, Toshifumi Shimizu
doaj +1 more source
Astronomy & AstrophysicsContext. The solar chromosphere is a dynamic and crucial interface between the solar interior and its interplanetary environment, regulating how energy is locally deposited into heat and transported into the upper atmospheric layers.
Noraz Q., Carlsson M., Aulanier G.
doaj +1 more source
Multiwavelength Observations of Substructures in Solar Flare Ribbons
The Astrophysical JournalSolar flare ribbons are extensive brightenings in the chromosphere during flares, often showing fine-scale structuring that reflects the underlying energy release. Using high-cadence imaging from the Swedish 1 m Solar Telescope/CRISP during an X1.5-class
Vishal Singh +8 more
doaj +1 more source
Physics OpenSolar UV radiation influence the Earth's climate and upper atmosphere. The UV emission from the Sun modulates with the sunspot cycle with an 11-year periodicity.
(G) Chandrika +2 more
doaj +1 more source
Dynamics of the Quiet Solar Chromosphere [PDF]
, 1999 The solar chromosphere has never been static although it was often modeled so.Even the quiet-sun internetwork chromosphere has become thoroughly dynamic with the acoustic shock interpretation of the Ca II K 2V grains.
Rutten, R.J. +3 more
core +1 more source
The Astrophysical JournalRotation is one of the fundamental characteristics of the Sun, and it plays a crucial role in understanding the magnetic activities and dynamo processes.
Ruoxue Sha +6 more
doaj +1 more source