Results 121 to 130 of about 11,368 (206)

X-ray imaging of flare loops and coronal arches [PDF]

HXIS (Hard X-ray Imaging Spectrometer) results related to preflare, flare-decay, and post-flare phases in the solar corona are summarized. Particularly discussed are miniflares, long-lived X-ray enhancements along filament channels, flare precursors ...
Svestka, Z.
core   +1 more source

Solar Coronal Loops Resolved by Hinode and SDO

, 2012
Revised version accepted by ApJ ...
Brooks, David H., Warren, Harry P., Ugarte-Urra, Ignacio   +2 more
openaire   +2 more sources

Self-Consistent Heating of the Magnetically Closed Solar Corona: Generation of Nanoflares, Thermodynamic Response of the Plasma and Observational Signatures

The Astrophysical Journal
The energy that heats the magnetically closed solar corona originates in the complex motions of the massive photosphere. Turbulent photospheric convection slowly displaces the footpoints of coronal field lines, causing them to become twisted and tangled.
Craig D. Johnston, Lars K. S. Daldorff, James A. Klimchuk, Shanwlee Sow Mondal, Will T. Barnes, James E. Leake, Jack Reid, Jacob D. Parker   +7 more
doaj   +1 more source

Collisional damping of surface waves in the solar corona [PDF]

The damping of surface waves by viscosity and heat conduction is evaluated. For the solar corona, it is found that surface waves dissipate efficiently only if their periods are shorter than a few tens of seconds and only if the background magnetic field ...
Gordon, B. E., Hollweg, J. V.
core   +1 more source

Anomalous cross-field motions of solar coronal loops

Astronomy & Astrophysics
We present several examples of unusual evolutionary patterns in solar coronal loops that resemble cross-field drift motions. These loops were simultaneously observed from two vantage points by two different spacecraft: the High-Resolution Imager of the Extreme Ultraviolet Imager aboard the Solar Orbiter and the Atmospheric Imaging Assembly aboard the ...
Sudip Mandal, Hardi Peter, James A. Klimchuk, Lakshmi Pradeep Chitta   +3 more
openaire   +2 more sources

Modeling Solar Flares Using Tapered Coronal Loops

, 2014
Final presentations of the Center for Astrophysics HEA/SSP Solar Summer Intern Program.
openaire   +1 more source

Three Types of Solar Coronal Rain during Magnetic Reconnection between Open and Closed Magnetic Structures

The Astrophysical Journal
Coronal rain (CR) is a crucial part of the mass cycle between the corona and chromosphere. It includes flare-driven CR and two types of quiescent CR, along nonflaring active region closed loops and along open structures, separately, labeled as type I ...
Fangfang Qiao, Leping Li, Hui Tian, Zhenyong Hou, Hongqiang Song, Kaifan Ji, Zheng Sun   +6 more
doaj   +1 more source

Turbulent Suppression of Alfvénic Wave Resonances in Coronal Loops

The Astrophysical Journal
Alfvénic wave turbulence is a leading mechanism for explaining the heating of the solar corona and the acceleration of the solar wind. Alfvénic waves are observed to be prevalent throughout the inner corona.
Edris Tajfirouze, Richard Morton, Mahboubeh Asgari-Targhi   +2 more
doaj   +1 more source

The Hydrodynamic Thermal Continuum, with Applications to Stratified Atmospheres and 1D Coronal Loop Models

The Astrophysical Journal
Using both analytical and numerical means, we demonstrate that linear stability analysis of a hydrodynamic stratified atmosphere or a 1D coronal loop model in nonadiabatic settings features a thermal continuum corresponding to highly localized ...
Rony Keppens, Jordi De Jonghe, Adrian Kelly, Nicolas Brughmans, Hans Goedbloed   +4 more
doaj   +1 more source

Investigating the Behavior and Spatiotemporal Variations of Green-line Emission in the Solar Corona

The Astrophysical Journal Supplement Series
Understanding coronal structure and dynamics can be facilitated by analyzing green-line emission, which enables the investigation of diverse coronal structures such as coronal loops, streamers, coronal holes, and various eruptions in the solar atmosphere.
Jacob Oloketuyi, Yu Liu, Linhua Deng, Abouazza Elmhamdi, Fengrong Zhu, Ayodeji Ibitoye, Opeyemi Omole, Feiyang Sha, Qiang Liu   +8 more
doaj   +1 more source