Results 81 to 90 of about 11,319 (196)

Signatures of Damping Nonlinear Oscillations by Kelvin–Helmholtz Instability–induced Turbulence in Synthetic Observations

The Astrophysical Journal
Large-amplitude decaying kink oscillations of coronal loops are strongly influenced by nonlinear processes such as Kelvin–Helmholtz instability (KHI) and turbulence, although comprehensive theoretical understanding and observational confirmation remain ...
Sihui Zhong, Andrew Hillier, Iñigo Arregui   +2 more
doaj   +1 more source

Investigating the Correlation Between Inclination of Coronal Loops and Solar Flare Activity [PDF]

, 2015
The purpose of this research is to investigate changes in the coronal loop structures during the life cycle of a solar flare. Coronal loops are intricate and complicated magnetic features on the solar surface that are the source of large solar flares ...
Mann, John-Paul
core   +1 more source

Catastrophic cooling in solar coronal loops

, 2005
thesis
openaire   +2 more sources

Observations of Active Region Loops with the EUV Imaging Spectrometer on Hinode

, 2008
Previous solar observations have shown that coronal loops near 1 MK are difficult to reconcile with simple heating models. These loops have lifetimes that are long relative to a radiative cooling time, suggesting quasi-steady heating.
Aschwanden, Aschwanden, Aschwanden, David H. Brooks, David R. Williams, George A. Doschek, Harry P. Warren, Ignacio Ugarte-Urra, Kashyap, Landi, Landi, Lenz, Mok, Patsourakos, Patsourakos, Reale, Schmelz, Warren, Warren, Winebarger   +19 more
core   +1 more source

Solar stereoscopy - where are we and what developments do we require to progress? [PDF]

, 2009
Observations from the two STEREO-spacecraft give us for the first time the possibility to use stereoscopic methods to reconstruct the 3D solar corona. Classical stereoscopy works best for solid objects with clear edges.
Feng, L., Inhester, B., Wiegelmann, T.
core   +2 more sources

Disentangling Thermal and Abundance Characteristics in a Solar Flare Using SDO/AIA, Hinode/XRT, and MinXSS-1 Observations

The Astrophysical Journal
We investigate the thermal properties of a solar flare by the observations of the soft X-ray Telescope on board Hinode and the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory. Our analysis reveals a tenuous but hot plasma cloud
Xiaoyan Xie, Anna Chen, Crisel Suarez, Katharine K. Reeves, Soumya Roy, Christopher S. Moore, Nishu Karna, Joy Velasquez   +7 more
doaj   +1 more source

A solar active region loop compared with a 2D MHD model

, 2005
We analyzed a coronal loop observed with the Normal Incidence Spectrometer (NIS), which is part of the Coronal Diagnostic Spectrometer (CDS) on board the Solar and Heliospheric Observatory (SOHO).
Aschwanden, Aschwanden, Aschwanden, Aschwanden, Bradshaw, Bradshaw, Brekke, Brekke, C. Gontikakis, Del Zanna, Del Zanna, Dere, Dere, Fludra, Fludra, Foukal, Foukal, Fredvik, G. J. D. Petrie, Gudiksen, H. C. Dara, Habbal, Judge, K. Tsinganos, Kjeldseth-Moe, Landini, Lenz, Mariska, Martens, Mazzotta, Patsourakos, Peter, Petrie, Petrie, Reale, Rosner, Sakai, Schmelz, Sheeley, Spadaro, Winebarger   +40 more
core   +1 more source

On the Intermittency of Hot Plasma Loops in the Solar Corona

The Astrophysical Journal
A recent analysis has suggested that the heating of plasma loops in the solar corona depends not just on the Poynting flux but also on processes yet to be identified.
Philip G. Judge, N. Paul M. Kuin
doaj   +1 more source

3D Reconstruction of Coronal Loops by the Principal Component Analysis

Entropy, 2013
Knowing the three dimensional structure of plasma filaments in the uppermost part of the solar atmosphere, known as coronal loops, and especially their length, is an important parameter in the wave-based diagnostics of this part of the Sun.
Erwin Verwichte, Valery M. Nakariakov, Giuseppe Nisticò   +2 more
doaj   +1 more source

Magnetic Waves In Solar Coronal Loops

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