Dominik Orlovskij,Andy To,David Long
Dominik Orlovskij
Sulfur, with a first ionization potential (FIP) of 10.36 eV, lies at the boundary between low- and high-FIP elements, making it particularly sensitive to fractionation processes in the solar atmosphere. Sulfur exhibits variable behaviour ac...
First ionization potential fractionation of sulfur observed with spectral imaging of the coronal environment [0.03%]
日冕观测到的硫的第一电离势分馏现象
Natalia Zambrana Prado,Therese Kucera,Eric Buchlin et al.
Natalia Zambrana Prado et al.
Hinode's extreme ultraviolet (EUV) imaging spectrometer (EIS) has advanced our understanding of elemental abundances in the solar corona, highlighting how magnetic configurations influence low first ionization potential (FIP) elements, such...
Andy S H To,J Martin Laming,Jeffrey Reep et al.
Andy S H To et al.
Elemental abundance variations in the solar corona, characterized by first ionization potential (FIP) bias, provide crucial diagnostics of chromospheric processes. The ponderomotive force model, which attributes fractionation to Alfvén wav...
Exploring the link between wave activity in the photospheric velocity driver and the FIP bias in the solar corona [0.03%]
探讨光球速度驱动器中波活动与太阳日冕FIP偏好的联系
Andrea Mesoraca,Marco Stangalini,Fabio Reale et al.
Andrea Mesoraca et al.
We investigate wave activity in the solar photosphere within an active region, aiming to assess its possible connection to a well-known phenomenon in the solar corona: the first ionization potential (FIP) effect. This effect produces chemic...
Radiative hydrodynamic simulations of first ionization potential fractionation in solar flares [0.03%]
太阳耀斑中第一电离势分馏的辐射流体动力学模拟
Jeffrey Reep,Luke Fushimi Benavitz,Andy To et al.
Jeffrey Reep et al.
Elemental abundances in solar flares are observed to vary both spatially and temporally, but the underlying mechanisms remain poorly understood. The interplay between advection and the preferential acceleration of low first ionization poten...
Sulfur fractionation in coronal plumes as observed by Solar Orbiter/Spectral Imaging of the Coronal Environment [0.03%]
太阳轨道器/日冕环境光谱 imaging观测到的日冕物质抛射中的硫元素分馏现象
Slimane Mzerguat,Miho Janvier,Eric Buchlin et al.
Slimane Mzerguat et al.
Coronal plumes are bright, narrow structures rooted in coronal holes (CHs) that contribute to the solar wind. Their composition, particularly elemental fractionation as a function of first ionization potential (FIP), provides diagnostics of...
Twenty-one years of the ponderomotive force model of the first ionization potential effect [0.03%]
关于第一电离势效应的ponderomotive力模型的二十年
J Martin Laming
J Martin Laming
The ponderomotive force model of the first ionization potential (FIP) effect was first presented as a poster at the 2004 AAS meeting in Denver, CO (May 30th-June 3rd), and later as a talk at COSPAR in Paris (18th-25th July). The ponderomoti...
Spectropolarimetric analysis of waves linked to first ionization potential [0.03%]
与第一电离势有关的波的分光偏振分析
Mariarita Murabito,Marco Stangalini
Mariarita Murabito
High-resolution spectropolarimetry has opened new avenues for understanding how chromospheric waves shape coronal plasma composition. All modelling efforts so far highlight wave activity, and in particular the ponderomotive force associated...
Dynamic modelling of coronal abundances during flares on M-dwarf stars [0.03%]
活动M矮星色球大气中元素丰度的动态模拟研究
David H Brooks,Jeffrey W Reep,Andy S H To et al.
David H Brooks et al.
Solar atmospheric elemental abundances are now known to vary both in space and time. Dynamic modelling of these changes is therefore necessary to improve the accuracy of radiative hydrodynamic simulations. Recent studies have shown that inc...
The connection between solar coronal abundances and the underlying lower atmospheric properties [0.03%]
太阳日冕丰度与低层大气属性之间的联系
Paola Testa,Juan Martinez-Sykora,Bart De Pontieu et al.
Paola Testa et al.
Elemental abundances in the solar corona and solar wind are often observed to differ from those in the solar photosphere, most commonly showing an enhancement of low first ionization potential (FIP) elements (the FIP effect). Observational ...