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Two-dimensional cellular automaton model for the evolution of active region coronal plasmas
(Iop Publishing, 2015-02)
We study a two-dimensional cellular automaton (CA) model for the evolution of coronal loop plasmas. The model is based on the idea that coronal loops are made of elementary magnetic strands that are tangled and stressed ...
A nanoflare based cellular automaton model and the observed properties of the coronal plasma
(Iop Publishing, 2016-09-07)
We use the cellular automaton model described in López Fuentes & Klimchuk (2015, ApJ, 799, 128) to study the evolution of coronal loop plasmas. The model, based on the idea of a critical misalignment angle in tangled ...
Dynamical evolution of a magnetic cloud from the Sun to 5.4 AU
(EDP Sciences, 2011-07)
Context. Significant quantities of magnetized plasma are transported from the Sun to the interstellar medium via interplanetary coronal mass ejections (ICMEs). Magnetic clouds (MCs) are a particular subset of ICMEs, forming ...
A study of a coronal hole associated with a large filament eruption
(2017)
We report the results of a detailed study of an equatorial coronal hole and a dimming region related to the eruptions of a nearby large filament and subsequent coronal mass ejections (CMEs). The dynamic eruptions of the ...
Measuring the magnetic field of a trans-equatorial loop system using coronal seismology
(EDP Sciences, 2017-07)
Context. EIT waves are freely-propagating global pulses in the low corona which are strongly associated with the initial evolution of coronal mass ejections (CMEs). They are thought to be large-Amplitude, fast-mode ...
Correcting the effect of magnetic tongues on the tilt angle of bipolar active regions
(EDP Sciences, 2019-12)
Context. The magnetic polarities of bipolar active regions (ARs) exhibit elongations in line-of-sight magnetograms during their emergence. These elongations are referred to as magnetic tongues and attributed to the presence ...
Magnetic twist profile inside magnetic clouds derived with a superposed epoch analysis
(EDP Sciences, 2020-03)
Context. Magnetic clouds (MCs) are large-scale interplanetary transient structures in the heliosphere that travel from the Sun into the interplanetary medium. The internal magnetic field lines inside the MCs are twisted, ...
Energy input flux in the global quiet-sun corona
(IOP Publishing, 2017-07)
We present first results of a novel technique that provides, for the first time, constraints on the energy input flux at the coronal base (r ∼ 1.025 R o) of the quiet Sun at a global scale. By combining differential emission ...
The Recovery of CME-Related Dimmings and the ICME's Enduring Magnetic Connection to the Sun
(Springer, 2008-11)
It is generally accepted that transient coronal holes (TCHs, dimmings) correspond to the magnetic footpoints of CMEs that remain rooted in the Sun as the CME expands out into the interplanetary space. However, the observation ...
Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows
(IOP Publishing, 2009-11)
Hinode´s EUV Imaging Spectrometer (EIS) has discovered ubiquitous outflows of a few to 50 km s<sup>-1</sup> from active regions (ARs). These outflows are most prominent at the AR boundary and appear over monopolar magnetic ...