activity
20002024
most citedEvidence of Magnetic Helicity in Emerging Flux and Associated Flare

76 citations · 581 across the 37 of their papers we have counts for

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25 papers · 1 filter

astro-ph.SR2024

Transport of the magnetic flux away from a decaying sunspot via convective motions

Chenxi Zheng, Thierry Roudier, Brigitte Schmieder +5

Aims. The aim of this paper is to consider relationship between the decay of sunspots and convection via the motion of the family of granules and how the diffusion mechanism of mag…

astro-ph.SR2023★ 3 cited

Texture of average solar photospheric flows and the donut-like pattern

T. Roudier, J. Ballot, J. M. Malherbe +1

Detailed knowledge of surface dynamics is one of the key points in understanding magnetic solar activity. The motions of the solar surface, to which we have direct access via the o…

astro-ph.SR2022★ 24 cited

Scrutinizing the relationship between plage areas and sunspot areas and numbers

Theodosios Chatzistergos, Ilaria Ermolli, Natalie A. Krivova +3

Studies and reconstructions of past solar activity require data on sunspots as well as faculae/plage and network. Such data are also important for understanding the magnetic activi…

astro-ph.SR2021

The Solar Line Emission Dopplerometer project

J. -M. Malherbe, P. Mein, F. Sayede +4

Observations of the dynamics of solar coronal structures are necessary to investigate space weather phenomena and global heating of the corona. The profiles of high temperature lin…

astro-ph.SR2021★ 9 cited

Photospheric downflows observed with SDO/HMI, HINODE, and an MHD simulation

T. Roudier, M. Švanda, J. M. Malherbe +3

Downflows on the solar surface are suspected to play a major role in the dynamics of the convection zone. We investigate the existence of the long-lasting downflows whose effects i…

astro-ph.SR2021★ 6 cited

Four decades of advances from MSDP to S4I and SLED imaging spectrometers

P. Mein, J. -M. Malherbe, F. Sayede +3

The Multichannel Subtractive Double Pass (MSDP) is an imaging spectroscopy technique, which allows observations of spectral line profiles over a 2D field of view with high spatial…