E-Print Archive

There are 4310 abstracts currently viewable.


Search:

Advanced Search
Options
Main Page Add New E-Print Submitter
Information
Feedback
News Help/FAQ About Preferences
Manage Key Phrase
Notification
* News 04/04/20 * The archive is using a new backend database. This has thrown up a few SQL errors in the last few days. If you have any issues please email adavey@nso.edu with either the number of eprint you are trying to edit or a link to your preprint.

Alfvénic Perturbations in a Sunspot Chromosphere Linked to Fractionated Plasma in the Corona View all abstracts by submitter

Deb Baker   Submitted: 2020-12-09 02:10

In this study, we investigate the spatial distribution of highly varying plasma composition around one of the largest sunspots of solar cycle 24. Observations of the photosphere, chromosphere, and corona are brought together with magnetic field modelling of the sunspot in order to probe the conditions which regulate the degree of plasma fractionation within loop populations of differing connectivities. We find that in the coronal magnetic field above the sunspot umbra, the plasma has photospheric composition. Coronal loops rooted in the penumbra contain fractionated plasma, with the highest levels observed in the loops that connect within the active region. Tracing field lines from regions of fractionated plasma in the corona to locations of Alfvénic fluctuations detected in the chromosphere shows that they are magnetically linked. These results indicate a connection between sunspot chromospheric activity and observable changes in coronal plasma composition.

Authors: D. Baker, M. Stangalini, G. Valori, D. H. Brooks, A. S. H. To, L. van Driel-Gesztelyi, P. Demoulin, D. Stansby, D. B. Jess, S. Jafarzadeh
Projects: Hinode/EIS

Publication Status: Accepted ApJ
Last Modified: 2020-12-09 13:10
Go to main E-Print page  Slow magnetoacoustic waves in gravitationally stratified two-fluid plasmas in strongly ionised limit  Analyzing the propagation of EUV waves and their connection with type II radio bursts by combining numerical simulations and multi-instrument observations  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

Key
Go to main E-Print pageGo to main E-Print page.
Previous AbstractPrevious Abstract.
Next AbstractNext Abstract.
Download PreprintDownload Preprint.
Submitter's HomepageSubmitters Homepage.
Edit EntryEdit Entry.
View All Abstracts By SubmitterView all abstracts by submitter.
Delete AbstractDelete abstract.

Latest Entries
Thermal-nonthermal energy partition in solar flares derived from X-ray, EUV, and bolometric observations
From Pseudostreamer Jets to Coronal Mass Ejections: Observations of the Breakout Continuum
Designing a New Coronal Magnetic Field Energy Diagnostic
A Three-Dimensional Velocity of an Erupting Prominence Prior to a Coronal Mass Ejection
Spectroscopic observations of a flare-related coronal jet
Catalog of Solar Failed Eruptions and Other Dynamic Features Registered by SDO/AIA
The non-Fourier image reconstruction method for the STIX instrument
Observation and Modeling of Solar Jets
Challenges and Advances in Modeling of the Solar Atmosphere: A White Paper of Findings and Recommendations
Non-equilibrium Flux Rope Formation by Confined Flares Preceding a Solar Coronal Mass Ejection
Radio Measurements of the Magnetic Field in the Solar Chromosphere and the Corona
A Fast, Simple, Robust Algorithm for Coronal Temperature Reconstruction
Nonlinear Alfvén Wave Model of Stellar Coronae and Winds from the Sun to M dwarfs
Possibility of Diagnostics of the Beginning of Solar Cycle 25 Based on Its Precursors at Mid-Heliolatitudes
The chromospheric component of coronal bright points. Coronal and chromospheric responses to magnetic-flux emergence
Structure of the Solar Atmosphere: A Radio Perspective
Signatures of Cross-sectional Width Modulation in Solar Spicules due to Field-aligned Flows
ALMA and IRIS Observations of the Solar Chromosphere II: Structure and Dynamics of Chromospheric Plage
ALMA and IRIS Observations of the Solar Chromosphere I: an On-Disk Type II Spicule
Evolution of a Steamer-Blowout CME as Observed by Imagers on Parker Solar Probe and the Solar Terrestrial Relations Observatory

Related Pages
MSU Solar Physics.
Max Millennium Science Mail Archive.
Max Millennium Message of the Day Mail Archive.
Max Millennium Flare Catalog

Archive Maintainer
Alisdair Davey



© 2000-2020 Solar Physics Group - Montana State University