125 citations · 205 across the 7 of their papers we have counts for
7 papers
Local Helioseismology of Emerging Active Regions: A Case Study
Alexander G. Kosovichev, Junwei Zhao, Stathis Ilonidis
Local helioseismology provides a unique opportunity to investigate the subsurface structure and dynamics of active regions and their effect on the large-scale flows and global circ…
Predicting Coronal Mass Ejections Using Machine Learning Methods
Monica G. Bobra, Stathis Ilonidis
Of all the activity observed on the Sun, two of the most energetic events are flares and Coronal Mass Ejections (CMEs). Usually, solar active regions that produce large flares will…
Probing the Shallow Convection Zone: Rising Motion of Subsurface Magnetic Fields in the Solar Active Region
Shin Toriumi, Stathis Ilonidis, Takashi Sekii +1
In this Letter we present a seismological detection of a rising motion of magnetic flux in the shallow convection zone of the Sun, and show estimates of the emerging speed and its…
Helioseismic Detection of Emerging Magnetic Flux
Stathis Ilonidis, Junwei Zhao, Alexander G. Kosovichev
Investigating the properties of magnetic flux emergence is one of the most important problems of solar physics. In this study we present a newly developed deep-focus time-distance…
Towards Waveform Heliotomography: Observing Interactions of Helioseismic Waves with a Sunspot
Junwei Zhao, Alexander G. Kosovichev, Stathis Ilonidis
We investigate how helioseismic waves that originate from effective point sources interact with a sunspot. These waves are reconstructed from observed stochastic wavefields on the…
Determining Absorption, Emissivity Reduction, and Local Suppression Coefficients inside Sunspots
Stathis Ilonidis, Junwei Zhao
The power of solar acoustic waves is reduced inside sunspots mainly due to absorption, emissivity reduction, and local suppression. The coefficients of these power-reduction mechan…