Results 121 to 130 of about 10,692 (216)

Solar jet-coronal hole collision and a related coronal mass ejection

, 2016
Jets are defined as impulsive, well-collimated upflows, occurring in different layers of the solar atmosphere with different scales. Their relationship with coronal mass ejections (CMEs), another type of solar impulsive events, remains elusive. Using the high-quality imaging data of AIA/SDO, here we show a well-observed coronal jet event, in which part
Zheng, Ruisheng, Chen, Yao, Du, Guohui, Li, Chuanyang   +3 more
openaire   +2 more sources

Simulation of Thermal Nonequilibrium Cycles in the Solar Wind

The Astrophysical Journal
Thermal nonequilibrium (TNE) is a condition of the plasma in the solar corona in which the local rate of energy loss due to radiation increases to the point that it cannot be sustained by the various heating terms acting on the plasma, precluding the ...
Roger B. Scott, Jeffrey W. Reep, Mark G. Linton, Stephen J. Bradshaw   +3 more
doaj   +1 more source

The observation of possible reconnection events in the boundary changes of solar coronal holes [PDF]

Coronal holes are large scale regions of magnetically open fields which are easily observed in solar soft X-ray images. The boundaries of coronal holes are separatrices between large scale regions of open and closed magnetic fields where one might expect
Kahler, S. W., Moses, J. Daniel
core   +1 more source

Investigating the Behavior and Spatiotemporal Variations of Green-line Emission in the Solar Corona

The Astrophysical Journal Supplement Series
Understanding coronal structure and dynamics can be facilitated by analyzing green-line emission, which enables the investigation of diverse coronal structures such as coronal loops, streamers, coronal holes, and various eruptions in the solar atmosphere.
Jacob Oloketuyi, Yu Liu, Linhua Deng, Abouazza Elmhamdi, Fengrong Zhu, Ayodeji Ibitoye, Opeyemi Omole, Feiyang Sha, Qiang Liu   +8 more
doaj   +1 more source

Predicting the Solar Wind Speed and Interplanetary Sector Structure during Solar Cycles 21–25

The Astrophysical Journal
We use potential-field source-surface (PFSS) extrapolations of photospheric field data to predict the solar wind speed and interplanetary sector structure at Earth during solar cycles 21–25, and compare the results with in situ measurements.
Y.-M. Wang, N. R. Sheeley Jr.
doaj   +1 more source

Connecting Solar Wind Velocity Spikes Measured by Solar Orbiter and Coronal Brightenings Observed by SDO

The Astrophysical Journal Letters
The Parker Solar Probe's discovery that magnetic switchbacks and velocity spikes in the young solar wind are abundant has prompted intensive research into their origin(s) and formation mechanism(s) in the solar atmosphere.
Chuanpeng Hou, Alexis P. Rouillard, Jiansen He, Bahaeddine Gannouni, Victor Réville, Philippe Louarn, Andrey Fedorov, Lubomír Přech, Christopher J. Owen, Daniel Verscharen, Raffaella D’Amicis, Luca Sorriso-Valvo, Naïs Fargette, Jesse Coburn, Vincent Génot, Jim M. Raines, Roberto Bruno, Stefano Livi, Benoit Lavraud, Nicolas André, Gabriel Fruit, Rungployphan Kieokaew, Illya Plotnikov, Emmanuel Penou, Alain Barthe, Dhiren Kataria, Matthieu Berthomier, Frederic Allegrini, Vito Fortunato, Gennaro Mele, Timothy Horbury   +30 more
doaj   +1 more source

Identifying Coronal Sources of L1 Solar Wind Disturbances Using the Fisk Heliospheric Magnetic Field and Potential Field Extrapolations during Three Solar Minima

The Astrophysical Journal
The solar minima between solar cycles 22–23, 23–24, and 24–25 are the best observed minima on record. In situ solar wind and interplanetary magnetic field measurements by the Wind and ACE spacecraft at L1 with 1 hr cadence are explored using wavelet ...
P. J. Steyn, D. Johnson, G. J. J. Botha, S. Régnier   +3 more
doaj   +1 more source

Interaction of minor ions with fast and slow shocks [PDF]

The coronal slow shock was predicted to exist embedded in large coronal holes at 4 to 10 solar radii. A three-fluid model was used to study the jumps in minor ions propertes across the coronal slow shock.
Whang, Y. C.
core   +1 more source

Spectroscopic Observations of the Solar Corona during the 2017 August 21 Total Solar Eclipse: Comparison of Spectral Line Widths and Doppler Shifts between Open and Closed Magnetic Structures

The Astrophysical Journal
The spectroscopic observations presented here were acquired during the 2017 August 21 total solar eclipse (TSE) with a three-channel partially multiplexed imaging spectrometer operating at extremely high orders (>50). The 4 R _⊙ extent of the slit in the
Yingjie Zhu, Shadia R. Habbal, Adalbert Ding, Bryan Yamashiro, Enrico Landi, Benjamin Boe, Sage Constantinou, Michael Nassir   +7 more
doaj   +1 more source

The SWAP Filter: A Simple Azimuthally Varying Radial Filter for Wide-Field EUV Solar Images. [PDF]

Sol Phys, 2023
Seaton DB, Berghmans D, Bloomfield DS, De Groof A, D'Huys E, Nicula B, Rachmeler LA, West MJ.   +7 more
europepmc   +1 more source