Results 101 to 110 of about 1,198,926 (208)

Responses of a Coronal Hole to a Fast Flare-driven Coronal Wave

The Astrophysical Journal Letters
Coronal waves, significant solar phenomena, act as diagnostic tools for scientists studying solar atmosphere properties. Here, we present a novel observation detailing how a coronal wave event, associated with an X5.0 class flare, influenced the ...
Xiaofan Zhang, Huadong Chen, Guiping Zhou, Li Feng, Yang Su, Jinhan Guo, Leping Li, Wei Lin, Suli Ma, Yuandeng Shen, Ruisheng Zheng, Suo Liu, Xianyong Bai, Yuanyong Deng, Jingxiu Wang   +14 more
doaj   +1 more source

Source Materials and Heating of Alfvénic Slow and Hot Solar Wind Revealed by Heavy Ions

The Astrophysical Journal
This work quantitatively studies the differences of heavy ions among non-Alfvénic slow wind (N-ASSW), classical fast wind (FSW), and Alfvénic slow and hot wind (ASSW and AHSW) by effect size and Kolmogorov–Smirnov statistic.
Shuyi Meng, Shuo Yao
doaj   +1 more source

Multi-Thermal Segmentation of Solar Coronal Holes

, 2016
Here we present a poster describing a new multi-thermal segmentation method, to extract coronal boundaries from that of the quiet Sun.Our method uses 3 wavebands (171A, 193A and 211A) to exctract coronal holes and their ...
Garton, Tadhg, Gallagher, Peter
openaire   +1 more source

First imaging of corotating interaction regions using the STEREO spacecraft [PDF]

, 2008
Plasma parcels are observed propagating from the Sun out to the large coronal heights monitored by the Heliospheric Imagers (HI) instruments onboard the NASA STEREO spacecraft during September 2007. The source region of these out-flowing parcels is found
Eyles, C. J., Davies, J. A., Rouillard, A. P., Bewsher, D., Forsyth, R. J., Harrison, R. A., Rees, A., Hapgood, M., Lockwood, M., Crothers, S. R., Perry, C. H., Davis, C. J.   +11 more
core   +1 more source

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

A solar storm observed from the Sun to Venus using the STEREO, Venus Express, and MESSENGER spacecraft [PDF]

, 2009
The suite of SECCHI optical imaging instruments on the STEREO-A spacecraft is used to track a solar storm, consisting of several coronal mass ejections (CMEs) and other coronal loops, as it propagates from the Sun into the heliosphere during May 2007 ...
Anderson, B., Tsang, S., Harrison, R. A., Lockwood, M., Savani, N. P., Eyles, C. J., Jones, G. H., Frahm, R. A., Forsyth, R. J., Thernisien, A., Howard, R. A., Whittaker, I., Carr, C. M., Rouillard, A. P., Fraenz, M., Brown, D. S., Hapgood, M., Coates, A. J., Zhang, T. -L., Crothers, S. R., Grande, M., Davies, J. A., Sheeley, N. R., Bewsher, D., Winningham, J. D., Davis, C. J.   +25 more
core   +1 more source

Solar influences in the heliosphere: understanding coronal mass ejections and their associated magnetic clouds [PDF]

, 2011
Coronal mass ejections (CMEs) are large-scale explosions on the Sun that expel plasma and magnetic field into the heliosphere. The interplanetary counterparts of CMEs, termed interplanetary CMEs (ICMEs), are often directly observed by spacecraft ...
Steed, K.
core  

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

Solar Coronal Rotation from 1973 to 2017: An Analytical Approach Based on Coronal Hole Areas

The Astrophysical Journal
Solar coronal rotation exhibits significant complexity, and its relationship with the 11 yr solar cycle remains poorly understood. Using 597 McIntosh synoptic maps (CR1601–CR2197), we construct the temporal evolution of coronal rotation by performing ...
Zhijun Zhao, Yalin Li, Nanbin Xiang, Linhua Deng, Haijing Zhou, Xinhua Zhao   +5 more
doaj   +1 more source