Results 41 to 50 of about 43,284 (218)
Decayless Oscillations in Solar Coronal Bright Points [PDF]
Astrophysical Journal, 2022 Decayless kink oscillations of solar coronal loops (or decayless oscillations for short) have attracted great attention since their discovery. Coronal bright points (CBPs) are mini-active regions and consist of loops with a small size. However, decayless
Yuhang Gao +3 more
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Modelling of Solar Coronal Loops [PDF]
Highlights of Astronomy, 1992 Modelling of coronal active regions in terms of loop structures began around 1974 (see Jordan 1975) and was stimulated by images of the corona in X-rays and the uv, obtained from rocket flights. Vaiana was a pioneer in this field (see Vaiana et al. 1973). The Skylab missions provided a fuller range of imaging and spectroscopic observations, and much of
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Fleeting Small-scale Surface Magnetic Fields Build the Quiet-Sun Corona
The Astrophysical Journal Letters, 2023 Arch-like loop structures filled with million Kelvin hot plasma form the building blocks of the quiet-Sun corona. Both high-resolution observations and magnetoconvection simulations show the ubiquitous presence of magnetic fields on the solar surface on ...
L. P. Chitta +21 more
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From Coronal Holes to Pulsars and Back Again: Learning the Importance of Data
Frontiers in Astronomy and Space Sciences, 2022 Although wanting to become an astronomer from an early age, I ended up in solar physics purely by chance, after first working in high-energy astrophysics.
Y.-M. Wang
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Astrophysical Journal, 2019 Rapidly decaying oscillations of the thermal emission detected in the decay phase of solar and stellar flares are usually interpreted as standing or sloshing (reflecting) slow magnetoacoustic oscillations.
V. Nakariakov +5 more
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Solar coronal heating from small-scale magnetic braids [PDF]
Astronomy & Astrophysics, 2022 Relaxation of braided coronal magnetic fields through reconnection is thought to be a source of energy to heat plasma in active region coronal loops. However, observations of active region coronal heating associated with an untangling of magnetic braids ...
L. P. Chitta +21 more
semanticscholar +1 more source
3D Solar Coronal Loop Reconstructions with Machine Learning
The Astrophysical Journal Letters, 2021 Abstract The magnetic field plays an essential role in the initiation and evolution of different solar phenomena in the corona. The structure and evolution of the 3D coronal magnetic field are still not very well known. A way to ascertain the 3D structure of the coronal magnetic field is by performing magnetic field extrapolations from ...
Iulia Chifu, Ricardo Gafeira
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The Astrophysical Journal, 2022 A challenge in characterizing active region (AR) coronal heating is in separating transient (bursty) loop heating from the diffuse background (steady) heating.
Sanjiv K. Tiwari +4 more
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Repeated Coronal Condensations Caused by Magnetic Reconnection between Solar Coronal Loops
Astrophysical Journal, 2018 We recently presented coronal condensations, caused by magnetic reconnection (MR) between coronal loops from extreme ultraviolet observations, over the course of one day, on 2012 January 19.
Leping Li +7 more
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The Polytropic Index of Solar Coronal Plasma in Sunspot Fan Loops and Its Temperature Dependence [PDF]
Astrophysical Journal, 2018 Observations of slow magneto-acoustic waves have been demonstrated to possess a number of applications in coronal seismology. Determination of the polytropic index (γ) is one such important application.
S. Prasad +4 more
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