Heating of the Magnetically Closed Corona

Members of this HSD 671 work package study how the magnetically closed corona is heated to multi-million degree temperatures with the ultimate goal of producing a physics-based model of the solar spectral irradiance. This encompasses modeling and observational studies on scales from individual current sheets to the global corona. For more information about the projects being undertaken in the group, please see the funded proposals, progress reports, and presentations listed below.

Publications and External Presentations supported by this and the previous work package:

• Current Work Package: Oct. 2021 - May 2023
• First Work Package: Oct. 2018 - Sept. 2021

Workpackage Reviews

• 5/16/2023, ISFM Review: Heating of the Magnetically Closed Corona pdf, pptx
• 4/6/2022, ISFM Showcase: Heating of the Magnetically Closed Corona (pptx)
• 3/15/2021, ISFM Showcase: Heating of the Magnetically Closed Corona (pptx)

Upcoming Meetings

• 3/1/2024, TBD

Presentations given at previous group meetings:

• 4/17/2024, Irina Kitiashvili 3D Radiative MHD Modeling of Subsurface Dynamics and Atmosphere of the Sun and Links to Coronal Heating
• 4/3/2024, Wil Barnes synthesizAR: A Python framework for forward-modeling optically-thin emission from field-aligned hydrodynamic models
• 3/20/2024, Joe Plowman Coronal 3D Reconstruction with CROBAR
• 3/6/2024, Jim Klimchuk Observable Constraints on Models, Terry Kucera Prepping to Run GX Simulator: Progress Report
• 11/15/2023, Lars Daldorff Solar Convection
• 11/1/2023, Antoine Dolliou Campfires
• 10/18/2023, Joshua Pettit Atmospheric Impacts of X-ray and EUV Irradiance
• 10/4/2023, Craig Johnston Multi Strand Simulations
• 8/24/2023, Sam Van Kooten Tracking bright points with shape-resolved observations Image: DKIST (pptx), (pdf)
• 7/26/2023, Jim Klimchuk The Thickness of Current Sheets and Implications for Coronal Heating
• 7/12/2023, James Leake The Onset of Magnetic Reconnection in Dynamically Evolving Current Sheets in the Solar Corona
• 5/31/2023, Vladimir Airapetian Signatures of Stellar Atmospheric Heating: From the Sun to Sun-like Stars
• 4/19/2023, Vadim Uritsky Reconstructing the cross-sectional geometry of a thin closed corona (pdf), (pptx)
• 4/5/2023, Jim Klimchuk The Unavoidable Thinning of Current Sheets
• 3/9/2023, Cosima Breu Broadening of coronal lines in a 3D MHD loop model
• 2/22/2023, Cecilia Mac Cormack Observation and modeling of solar coronal loops
• 1/25/2023, Biswajit Mondal Role of small-scale impulsive events in heating the X-ray bright points of the quiet Sun
• 11/30/2022, Jenny Marcela Rodriguez Gomez The COronal Density and Temperature (CODET) model, improvements and new perspectives
• 11/16/2022, Jeff Brosius Nonthermal Line Broadening and Velocities Observed by EUNIS- 2021 and EIS in the Core of AR 12824 (pdf), (pptx)
• 11/2/2022, Pankaj Kumar Plasmoids, flows, and jets associated with a failed filament eruption (pdf), (pptx)
• 10/19/2022, Shanwlee Sow Modal Simulations of spicules and constraints on their role in explaining hot coronal emission
• 10/5/2022, Vadim Uritsky On Loops and Veils
• 8/25/2022,Tom Howson Coronal Heating with Random Foot Point Driving: Understanding Time Scales
• 5/4/2022, Yihua Zheng Solar Irridiance: Measurement, Modeling and Connection to the Ionosphere -Thermosphere Dynamics
• 4/20/2022, Nicki Viall, Answering the Outstanding Questions of Solar Wind Physics using Ultraviolet Measurements of the Solar Corona
• 3/23/2022, James Leake, Onset of Reconnection in Dynamically Evolving Coronal Current Sheets
• 3/9/2022, Jim Klimchuk, Observational Signatures of Coronal Heating in MHD Models Without a Lower Atmosphere
• 2/25/2022, Anna Malanushenko, The Coronal Veil
• 2/9/2022, Terry Kucera, How do more realistic nanoflare distributions affect thermal nonequilibrium in model loops?
• 12/1/2021, Nicki Viall, Understanding Heating in Active Region Cores through Machine Learning
• 11/17/2021, Ineke De Moortel, Effectiveness of Heating in Driven Arcades with Different Driving Timescales
• 10/20/2021, Kalman Knizhnik, Reconnection Statistics in Nanoflares
• 10/6/2021, Lars Daldorff, Possible Consequences of the 3rd Dimension on Reconnection
• 9/22/2021, Jeff Brosius, Updates on EUNIS-2021
• 8/11/2021, Jim Klimchuk, Turbulence and the Formation of Coronal Current Sheets
• 7/14/2021, Doug Rabin, Coronal Microscale Observatory (CMO)
• 5/19/2021, Peter Young, Solar UV Bursts
• 3/24/2021, Vadim Uritsky, In search of new observational tests for small scale field aligned coronal structures,
• 3/16/2021, Jim Klimchuk, Kalman Knizhnik, Sam Schonfeld, Sherry Chhabra, ISFM Showcase, NASA HQ: Heating of the Magnetically Closed Corona
• 1/15/2021, Jim Klimchuk, Solar Physics Webinar of Global Reach, Heating of the Magnetically Closed Corona
• 12/2/2020, Sam Schonfeld, Considering the transition region when studying coronal heating
• 11/18/2020, Sherry Chhabra, Study of Type III Radio Bursts from Small-scale Reconnection Events
• 10/28/2020, Vadim Uritsky, Statistical modeling and analysis of multi-stranded coronal loops (part 2)
• 7/17/2020, Vadim Uritsky, HSD Director's Seminar, Can nanoflare heating define the coronal loop size?
• 7/17/2020, Terry Kucera, HSD Director's Seminar, Spectroscopic Constraints on the Cross-Sectional Asymmetry and Expansion of Active Region Loops
• 7/17/2020, Jim Klimchuk, HSD Director's Seminar, Cross Sections of Coronal Loops Flux Tubes
3/4/2020, Sam Schonfeld, Considering the transition region when studying coronal heating
• 3/4/2020, Sam Schonfeld, Considering the transition region when studying coronal heating
• 2/5/2020, Vadim Uritsky, Statistical modeling of multi-stranded coronal loops
• 1/29/2020, Jim Klimchuk, Spicules, Si IV Doppler Shifts, and Their Lack of Center-to-Limb Variation
• 10/9/2019, Craig Johnston, The effects of numerical resolution and background heating on thermal no-equilibrium in coronal loops (Johnston et al. 2019a,b)
• 7/24/2019, Emily Mason, Simulations of TNE in Raining Null-Point Topologies
• 4/17/2019, Nicki Viall, Nanoflare Timelage Observation and Modeling
• 4/17/2019, Jim Klimchuk, Modeling Solar Active Regions and their Emission
• 4/10/2019, Terry Kucera, Are Coronal Loops Really Cylindrical?: Spectroscopy Edition
• 3/27/2019, James Leake and Lars Daldorff, Investigating the Role of Magnetic Shear in the Onset of Magnetic Reconnection in the Corona
• 3/13/2019, Sam Schonfeld, Impacts of Intermediate Time Scale SSI Variability
• 3/6/2019, Joel Allred, Model of AR 11726 Heated by Nanoflares
• 12/4/2018, Marcelo López Fuentes, The Effect of Nanoflare Heating on Coronal Spectral Lines
• 11/7/2018, Jim Klimchuk, The detectability of individual nanoflares
• 10/3/2018, Vadim Uritsky, Scale-invariance and scale-dependence in impulsive coronal loop heating
• 9/12/2018, Emily Mason, Thermal Non-Equlibrium in Null-Point Topologies
• 5/19/2018, Jim Klimchuk, Thermal Non-equilibrium (TNE) In the Presence of Asymmetries
• 5/2/2018, James Leake, Investigating the Onset of Magnetic Reconnection in the Corona and Chromosphere
• 4/25/2018, Vadim Uritsky, Detecting current sheets in turbulent reconnecting plasmas
• 4/25/2018, Kalman Knizhnik, Collective Behavior in Drive Coronal Loops
• 4/25/2018, Lars Daldorff, Nanoflare on Kinetic Scale: Spectra for the smallest scales
• 4/25/2018, Jeff Brosius, Emission Lines Relevant to Nanoflare Heating Observed by EUV and UV Spectrometers
• 3/14/2018, Jim Klimchuk, Poynting Flux and Heating Rate
• 2/14/2018, Nicholeen Viall and Terry Kucera, Using SDO/AIA to Understand the Thermal Evolution of Solar Prominence Formation

Proposals

• Understanding Coronal Heating and the Solar Spectral Irradiance Oct. 2017 - Sept. 2020
• Heating of the Magnetically Closed Corona Oct. 2021 - Sept. 2024

Reports

• Oct. 1, 2021 - Sept. 30, 2022

Honors

Dec 2021:
Parker Lecture: Jim Klimchuk, Coronal Heating: A Coupled Multi-Scale Problem Dec. 2021 AGU meeting, New Orleans, LA

August 2021:
NASA Robert H. Goddard Honor Award for Exceptional Achievement in Science to James Leak and Lars Daldorff for outstanding research leading to a breakthrough in understanding a key aspect of the fundamental physical process of magnetic reconnection.