6 papers
Coronal Mass Ejections and the Solar Cycle Variation of the Sun's Open Flux
Y. -M. Wang, N. R. Sheeley
The strength of the radial component of the interplanetary magnetic field (IMF), which is a measure of the Sun's total open flux, is observed to vary by roughly a factor of two ove…
Further Evidence for Looplike Fine Structure inside "Unipolar" Active Region Plages
Y. -M. Wang, I. Ugarte-Urra, J. W. Reep
Earlier studies using extreme-ultraviolet images and line-of-sight magnetograms from the Solar Dynamics Observatory (SDO) have suggested that active region (AR) plages and strong n…
Observations of Slow Solar Wind from Equatorial Coronal Holes
Y. -M. Wang, Y. -K. Ko
Because of its distinctive compositional properties and variability, low-speed ( km s) solar wind is widely believed to originate from coronal streamers, unlik…
Small-scale Flux Emergence, Coronal Hole Heating, and Flux-tube Expansion: A Hybrid Solar Wind Model
Y. -M. Wang
Extreme-ultraviolet images from the Solar Dynamics Observatory often show looplike fine structure to be present where no minority-polarity flux is visible in magnetograms, suggesti…
Instability of P-waves just below the transition region in a global solar wind simulation
R. Grappin, J. Léorat, R. Pinto +1
We investigate how wave propagation is modified by the presence of heat sources and sinks, in the simple 1D, hydrodynamical case, including chromosphere and solar wind. We integrat…
Periodicities in Solar Coronal Mass Ejections
Y. -Q. Lou, Y. -M. Wang, Z. Fan +2
Mid-term quasi-periodicities in solar coronal mass ejections (CMEs) during the most recent solar maximum cycle 23 are reported here for the first time using the four-year data (Feb…