145 citations · 535 across the 19 of their papers we have counts for
19 papers
Effects of partial ionization on magnetic flux emergence in the Sun
Georgios Chouliaras, P. Syntelis, V. Archontis
We have performed 3-D numerical simulations to investigate the effect of partial ionization on the process of magnetic flux emergence. In our study, we have modified the single-flu…
Chromospheric and coronal heating and jet acceleration due to reconnection driven by flux cancellation. II. Cancellation of two magnetic polarities of unequal flux
P. Syntelis, E. R. Priest
Context. Recent observations have shown that magnetic flux cancellation occurs at the photosphere more frequently than previously thought. Aims. In order to understand the energy r…
Chromospheric and coronal heating and jet acceleration due to reconnection driven by flux cancellation. I. At a three-dimensional current sheet
E. R. Priest, P. Syntelis
Context. The recent discovery of much greater magnetic flux cancellation taking place at the photosphere than previously realised has led us in our previous works to suggest magnet…
Differential Emission Measure Evolution as a Precursor of Solar Flares
C. Gontikakis, I. Kontogiannis, M. K. Georgoulis +4
We analyse the temporal evolution of the Differential Emission Measure (DEM) of solar active regions and explore its usage in solar flare prediction. The DEM maps are provided by t…
Decoding the Pre-Eruptive Magnetic Field Configurations of Coronal Mass Ejections
S. Patsourakos, A. Vourlidas, T. Török +15
A clear understanding of the nature of the pre-eruptive magnetic field configurations of Coronal Mass Ejections (CMEs) is required for understanding and eventually predicting solar…
On the Lorentz Force and Torque of Solar Photospheric Emerging Magnetic Fields
Aiying Duan, Chaowei Jiang, Shin Toriumi +1
Magnetic flux generated and intensified by the solar dynamo emerges into the solar atmosphere, forming active regions (ARs) including sunspots. Existing theories of flux emergence…
A Cancellation Nanoflare Model for Solar Chromospheric and Coronal Heating III. 3D Simulations and Atmospheric Response
P. Syntelis, E. R. Priest
Inspired by recent observations suggesting that photospheric magnetic flux cancellation occurs much more frequently than previously thought, we analytically estimated the energy re…
Kelvin-Helmholtz instability and Alfvenic vortex shedding in solar eruptions
P. Syntelis, P. Antolin
We report on a three-dimensional MHD numerical experiment of a small scale coronal mass ejection (CME) -like eruption propagating though a non-magnetized solar atmosphere. We find…
Eruptions and Flaring Activity in Emerging Quadrupolar Regions
P. Syntelis, E. J. Lee, C. W. Fairbairn +2
Context. Some of the most dynamic active regions are associated with complex photospheric magnetic configurations such as quadrupolar regions, and especially ones with a -spot c…
The emergence of magnetic flux and its role on the onset of solar dynamic events
V. Archontis, P. Syntelis
A plethora of solar dynamic events, such as the formation of active regions, the emission of jets and the occurrence of eruptions is often associated to the emergence of magnetic f…
Recurrent CME-like Eruptions in Emerging Flux Regions. II. Scaling of Energy and Collision of Successive Eruptions
P. Syntelis, V. Archontis, K. Tsinganos
We present results of three-dimensional MHD simulations of recurrent eruptions in emerging flux regions. The initial numerical setup is the same with the work by Syntelis et al. 20…
Successful and Failed Flux Tube Emergence in the Solar Interior
P. Syntelis, V. Archontis, A. Hood
We report on our three-dimensional (3D) magnetohydrodynamic (MHD) simulations of cylindrical weakly twisted flux tubes emerging from 18 Mm below the photosphere. We perform a param…
A Cancellation Nanoflare Model for Solar Chromospheric and Coronal Heating II. 2D Theory and Simulations
P. Syntelis, E. R. Priest, L. P. Chitta
Recent observations at high spatial resolution have shown that magnetic flux cancellation occurs on the solar surface much more frequently than previously thought, and so this led…
A Cancellation Nanoflare Model for Solar Chromospheric and Coronal Heating
E. R. Priest, L. P. Chitta, P. Syntelis
Nanoflare models for heating the solar corona usually assume magnetic braiding and reconnection as the source of the energy. However, recent observations at record spatial resoluti…
Recurrent CME-like eruptions in emerging flux regions. I. On the mechanism of eruptions
P. Syntelis, V. Archontis, K. Tsinganos
We report on three-dimensional (3D) Magnetohydrodynamic (MHD) simulations of recurrent eruptions in emerging flux regions. We find that reconnection of sheared fieldlines, along th…
The spectroscopic imprint of the pre-eruptive configuration resulting into two major coronal mass ejections
Petros Syntelis, Costis Gontikakis, Spiros Patsourakos +1
We present a spectroscopic analysis of the pre-eruptive configuration of active region NOAA 11429, prior to two very fast coronal mass ejections (CMEs) on March 7, 2012 that are as…
Emergence of non-twisted magnetic fields in the Sun: Jets and atmospheric response
Petros Syntelis, Vasilis Archontis, Costis Gontikakis +1
Aims. We study the emergence of a non-twisted flux tube from the solar interior into the solar atmosphere. We investigate whether the length of the buoyant part of the flux tube (i…
Study of the three-dimensional shape and dynamics of coronal loops observed by Hinode/EIS
P. Syntelis, C. Gontikakis, M. K. Georgoulis +2
We study plasma flows along selected coronal loops in NOAA Active Region 10926, observed on 3 December 2006 with Hinode's EUV Imaging Spectrograph (EIS). From the shape of the loop…
Uncovering the Birth of a Coronal Mass Ejection from Two-Viewpoint SECCHI Observations
A. Vourlidas, P. Syntelis, K. Tsinganos
We investigate the initiation and formation of Coronal Mass Ejections (CMEs) via detailed two-viewpoint analysis of low corona observations of a relatively fast CME acquired by the…