Results 111 to 120 of about 1,149,927 (208)

On the Connection of Coronal Loop Plasma with the Ambient Magnetic Field

The Astrophysical Journal Letters
Solar coronal loops are magnetically confined plasma structures whose properties are closely linked to the ambient magnetic field. Using 3D magnetohydrodynamic simulations of kink-unstable coronal flux tubes, we investigate how the intensity of the ...
F. Reale, G. Cozzo, P. Pagano, P. Testa
doaj   +1 more source

Fast and periodic propagating disturbances along coronal loops detected with EUI on board Solar Orbiter

Astronomy & Astrophysics
Context. Recent high-resolution observations from the Solar Orbiter mission can help detect the indirect signatures of heating at the smallest scales. Aims.
Dolliou A., Mandal S., Barczynski K., Van Doorsselaere T., Berghmans D., Froment C., Auchère F., Antolin P., Eklund H., Zhu Y., Kraaikamp E., Verbeeck C.   +11 more
doaj   +1 more source

Multiple Episodes of Remote Brightenings Driven by a Coronal Extreme-ultraviolet Jet on the Sun

The Astrophysical Journal
Remote brightening (RB) is compact brightening at footpoints of magnetic loops, which are remotely connecting to and confining an eruption in the solar atmosphere.
Chao Zhang, Zhenghua Huang, Hengyuan Wei, Youqian Qi, Mijie Shi, Hui Fu, Xiuhui Zuo, Weixin Liu, Mingzhe Sun, Ming Xiong, Lidong Xia   +10 more
doaj   +1 more source

Spectroscopic Observations of 5303 Å Emission along a Preflare Solar Coronal Loop—Evidence for Plasma Upflows

The Astrophysical Journal
The Visible Emission Line Coronagraph on board Aditya-L1 provides continuous spectroscopic observations of the solar corona in the Fe XIV 5303 Å emission line, which are a valuable tool to understand the plasma properties and dynamics in the near-Sun ...
R. Ramesh, V. Muthu Priyal, Jagdev Singh, K. Sasikumar Raja, P. Savarimuthu, E. Yuvashree, S. Nagashree   +6 more
doaj   +1 more source

Spectroscopic Observations of Coronal Rain Formation and Evolution Following an X2 Solar Flare

The Astrophysical Journal
A significant impediment to solving the coronal heating problem is that we currently only observe active region loops in their cooling phase. Previous studies showed that the evolution of cooling loop densities and apex temperatures is insensitive to the
David H. Brooks, Jeffrey W. Reep, Ignacio Ugarte-Urra, John E. Unverferth, Harry P. Warren   +4 more
doaj   +1 more source

Spatiotemporal Low First Ionization Potential Abundance: A Catalyst for Coronal Condensation

The Astrophysical Journal
Radiative losses play a critical role in the cooling of plasmas. When chromospheric plasma is sufficiently heated, it can flow into coronal loops, which subsequently cool down due to radiation. From observations, we infer that this cooling does not occur
Luke Fushimi Benavitz, Jeffrey W. Reep, Lucas A. Tarr, Andy S.H. To   +3 more
doaj   +1 more source

A solar jet-induced perturbation propagating through coronal loops and in-loop electron beam transport as indicated by type II and type N radio bursts

Astronomy & Astrophysics
Aims. Solar type II radio bursts are commonly attributed to coronal shocks driven by coronal mass ejections (CMEs). However, some metric type II bursts have occasionally been reported to occur in the absence of a CME and to be associated with weak solar ...
Cui Yingli, Kong Xiangliang, Li Zhentong, Wang Bing, Duan Yadan, Zhong Ze, Ning Hao, Wu Zhao, Wang Manqing, Liu Yang, Yu Feiyu, Jiang Zelong, Chen Wei, Su Yang, Chen Yao   +14 more
doaj   +1 more source

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

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