Results 1 to 10 of about 2,789 (225)

Multi-Scale Variability of Coronal Loops Set by Thermal Non-Equilibrium and Instability as a Probe for Coronal Heating

Frontiers in Astronomy and Space Sciences, 2022
Solar coronal loops are the building blocks of the solar corona. These dynamic structures are shaped by the magnetic field that expands into the solar atmosphere.
Patrick Antolin, Clara Froment
doaj   +3 more sources

Coronal Heating Rate in the Slow Solar Wind

The Astrophysical Journal Letters, 2023
This Letter reports the first observational estimate of the heating rate in the slowly expanding solar corona. The analysis exploits the simultaneous remote and local observations of the same coronal plasma volume, with the Solar Orbiter/Metis and the ...
Daniele Telloni, Marco Romoli, Marco Velli, Gary P. Zank, Laxman Adhikari, Cooper Downs, Aleksandr Burtovoi, Roberto Susino, Daniele Spadaro, Lingling Zhao, Alessandro Liberatore, Chen Shi, Yara De Leo, Lucia Abbo, Federica Frassati, Giovanna Jerse, Federico Landini, Gianalfredo Nicolini, Maurizio Pancrazzi, Giuliana Russano, Clementina Sasso, Vincenzo Andretta, Vania Da Deppo, Silvano Fineschi, Catia Grimani, Petr Heinzel, John D. Moses, Giampiero Naletto, Marco Stangalini, Luca Teriaca, Michela Uslenghi, Arkadiusz Berlicki, Roberto Bruno, Gerardo Capobianco, Giuseppe E. Capuano, Chiara Casini, Marta Casti, Paolo Chioetto, Alain J. Corso, Raffaella D’Amicis, Michele Fabi, Fabio Frassetto, Marina Giarrusso, Silvio Giordano, Salvo L. Guglielmino, Enrico Magli, Giuseppe Massone, Mauro Messerotti, Giuseppe Nisticò, Maria G. Pelizzo, Fabio Reale, Paolo Romano, Udo Schühle, Sami K. Solanki, Thomas Straus, Rita Ventura, Cosimo A. Volpicelli, Luca Zangrilli, Gaetano Zimbardo, Paola Zuppella, Stuart D. Bale, Justin C. Kasper   +61 more
doaj   +6 more sources

Prospective Implications of Extreme-ultraviolet Coronal Plumes for Magnetic-network Genesis of Coronal Heating, Coronal-hole Solar Wind, and Solar-wind Magnetic Field Switchbacks

The Astrophysical Journal Letters, 2023
We propose that coronal heating in EUV coronal plumes is weaker, not stronger, than in adjacent nonplume coronal magnetic funnels. This expectation stems from (i) the observation that an EUV plume is born as the magnetic flux at the foot of the plume’s ...
Ronald L. Moore, Sanjiv K. Tiwari, Navdeep K. Panesar, Alphonse C. Sterling   +3 more
doaj   +2 more sources

Solar Coronal Heating by Kinetic Alfvén Waves

The Astrophysical Journal
The utilization of the Cairns distribution serves as a vital tool for characterizing the nonthermal attributes commonly observed in space plasmas.
Syed Ayaz, Gang Li, Imran A. Khan
doaj   +3 more sources

Coronal Heating from Alfvén Wave Turbulence in Solar Coronal Loops

, 2020
This work is supported by the NSF-REU Solar Physics program at SAO, grant number AGS-1850750.
Hamann, Sydney
openaire   +3 more sources

Numerical Study of Divergence Cleaning and Coronal Heating/Acceleration Methods in the 3D COIN-TVD MHD Model

Frontiers in Physics, 2021
In the solar coronal numerical simulation, the coronal heating/acceleration and the magnetic divergence cleaning techniques are very important. The coronal–interplanetary total variation diminishing (COIN-TVD) magnetohydrodynamic (MHD) model is developed
Chang Liu, Chang Liu, Fang Shen, Fang Shen, Yousheng Liu, Yousheng Liu, Man Zhang, Man Zhang, Xiaojing Liu, Xiaojing Liu   +9 more
doaj   +1 more source

Deciphering Solar Coronal Heating: Energizing Small-scale Loops through Surface Convection

The Astrophysical Journal Letters, 2023
The solar atmosphere is filled with clusters of hot small-scale loops commonly known as coronal bright points (CBPs). These ubiquitous structures stand out in the Sun by their strong X-ray and/or extreme-ultraviolet (EUV) emission for hours to days ...
D. Nóbrega-Siverio, F. Moreno-Insertis, K. Galsgaard, K. Krikova, L. Rouppe van der Voort, R. Joshi, M. S. Madjarska   +6 more
doaj   +1 more source

The Role of High-frequency Transverse Oscillations in Coronal Heating

The Astrophysical Journal Letters, 2023
Transverse oscillations that do not show significant damping in solar coronal loops are found to be ubiquitous. Recently, the discovery of high-frequency transverse oscillations in small-scale loops has been accelerated by the Extreme Ultraviolet Imager ...
Daye Lim, Tom Van Doorsselaere, David Berghmans, Richard J. Morton, Vaibhav Pant, Sudip Mandal   +5 more
doaj   +1 more source

OBSERVING THE ROOTS OF SOLAR CORONAL HEATING—IN THE CHROMOSPHERE [PDF]

The Astrophysical Journal, 2009
14 pages, 5 figures, accepted for publication in ApJ ...
De Pontieu, Bart, McIntosh, Scott W., Hansteen, Viggo H., Schrijver, Carolus J.   +3 more
openaire   +2 more sources

Estimating Ion Temperatures at the Polar Coronal Hole Boundary

The Astrophysical Journal, 2023
The temperatures of the heavy ions ( T _i ) in the solar corona provide critical information about the heating mechanism of the million-degree corona.
Yingjie Zhu, Judit Szente, Enrico Landi
doaj   +1 more source