SH020
Plasma Energization, Particle Acceleration, and High-energy Emission in Solar Flares

Session ID#: 75781

Session Description:
Solar flares are magnetic-field dominated systems associated with explosive magnetic energy release, particle acceleration, and high-energy emission. They are important sources of energetic electrons, protons, and minor ions observed in interplanetary space and may actively contribute to large solar energetic particle events. However, the question of how high-energy particles are energized, transport in and interact with solar atmosphere, and generate high-energy emission remain controversial and poorly understood. Modern ground based and spaceborne multiwavelength observations (radio, microwaves, EUV, soft and hard X-rays, and gamma-rays) have provided many details and new opportunities for studying the high-energy particles and emissions in flares. Meanwhile, new progresses from analytical theories and numerical models have been made on magnetic reconnection, turbulence, collisionless shocks, particle acceleration, and chromosphere evaporation, revealing a rich set of physical processes. This session invites observation, theory and modeling presentations toward solving the long-standing and renewed problem.
Index Terms:

7519 Flares [SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY]
7554 X-rays, gamma rays, and neutrinos [SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY]
7845 Particle acceleration [SPACE PLASMA PHYSICS]
7974 Solar effects [SPACE WEATHER]

Primary Convener:  Fan Guo, Los Alamos National Laboratory, Los Alamos, NM, United States and Xiaocan Li
Conveners:  Lindsay Glesener, University of Minnesota, Twin Cities, MN, United States, Xiaocan Li, Los Alamos National Laboratory, Los Alamos, NM, United States, Hugh S Hudson, UC Berkeley, Space Sciences Lab, Berkeley, CA, United States and Xiaocan Li
Primary Liaison:  Fan Guo, Los Alamos National Lab, Los Alamos, NM, United States and Xiaocan Li
 
Large-scale particle acceleration by magnetic reconnection during solar flares (503157)
Xiaocan Li1, Fan Guo2, Chengcai Shen3, Bin Chen4 and Hui Li2, (1)Los Alamos National Laboratory, Los Alamos, NM, United States, (2)Los Alamos National Lab, Los Alamos, NM, United States, (3)Cambridge, MA, United States, (4)New Jersey Institute of Technology, Center for Solar-Terrestrial Research, Newark, NJ, United States
 
The Formation of Power-law Energy Spectrum in 3D Low-beta Magnetic Reconnection (504517)
Fan Guo1, Xiaocan Li1, Hui Li2, Adam Stanier1 and Patrick Kilian3, (1)Los Alamos National Laboratory, Los Alamos, NM, United States, (2)Los Alamos National Lab, Los Alamos, NM, United States, (3)Los Alamos National Lab, Los Alamos, United States
 
A Statistical Study of Magnetic Features of White-light Flares (504556)
Kyoko Watanabe, National Defense Academy of Japan, Department of Earth and Ocean Sciences, Yokosuka, Japan, Kosuke Tsuruda, National Defense Academy of Japan, Yokosuka, Japan, Satoshi Masuda, STEL, Nagoya University, Nagoya, Japan and Sam Krucker, UC Berkeley, Space Science Lab, Berkeley, CA, United States
 
First Quantitative Explanation of a Metric Type II Solar Radio Burst (504895)
Iver Hugh Cairns, University of Sydney, Sydney, NSW, Australia, Joachim Matthias Schmidt, State College, PA, United States, Divya Oberoi, MIT Haystack Observatory, Westford, MA, United States and John Morgan, Curtin University, Perth, WA, Australia
 
Solar Flare EUV and X-ray Emission: Building a 3D picture from Radiation Hydrodynamic 1D Loop Modelling (506554)
Graham Stewart Kerr1, Joel C Allred2 and Adrian Nigel Daw1, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)NASA GSFC, Solar Physics Lab, Greenbelt, MD, United States
 
Electron acceleration in solar flares (Invited) (510458)
James Frederick Drake1, Marc Swisdak2, Harry Arnold1, Joel Dahlin3 and Gareth Roberg-Clark1, (1)University of Maryland College Park, College Park, MD, United States, (2)University of Maryland, College Park, MD, United States, (3)University of Maryland, College Park, College Park, MD, United States
 
Type III Radio Bursts Observed in the Inner Heliosphere (518903)
Marc Pulupa1, Stuart D Bale1, Samuel Timothy Badman2, John W Bonnell1, Anthony W Case3, Thierry Dudok de Wit4, Keith Goetz5, Peter Harvey1, Alexander Michael Hegedus6, Justin Christophe Kasper7, Kelly E Korreck8, Vladimir Krasnoselskikh4, Davin E Larson9, Alain Lecacheux10, Roberto Livi11, Robert J MacDowall12, Milan Maksimovic13, David Malaspina14, Juan Carlos Martinez Oliveros9, Nicole Meyer-Vernet15, Michel Moncuquet16, Michael Louis Stevens17, Phyllis L Whittlesey11 and PSP FIELDS Team and PSP SWEAP Team, (1)University of California, Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, (2)University of Oxford, Oxford, United Kingdom, (3)Smithsonian Astrophysical Observatory, Cambridge, MA, United States, (4)LPC2E, CNRS and University of Orléans, Orléans, France, (5)University of Minnesota, Minneapolis, MN, United States, (6)University of Michigan Ann Arbor, Ann Arbor, MI, United States, (7)University of Michigan, Ann Arbor, MI, United States, (8)Smithsonian Observatory, Cambridge, MA, United States, (9)Space Sciences Laboratory, Berkeley, CA, United States, (10)Paris Observatory Meudon, Meudon, France, (11)University of California Berkeley, Berkeley, CA, United States, (12)NASA/Goddard Space Flight Center, Greenbelt, United States, (13)LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, Sorbonne Paris Cité, Meudon, France, (14)University of Colorado, Boulder, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (15)CNRS, Observatoire de Paris, Paris Cedex 16, France, (16)LESIA-CNRS, Meudon Cedex, France, (17)Smithsonian Astrophysics Observatory, Cambridge, MA, United States
 
High-energy Observations of Solar Flares During Solar Cycle 24th with the Fermi Large Area Telescope (Invited) (519042)
Nicola Omodei1, Melissa Pesce-Rollins2, Francesco Longo3, Vahe Petrosian1, Wei Liu4, Meng Jin5 and Fermi Large Area Telescope Collaboration , (1)Stanford University, Stanford, CA, United States, (2)INFN, Pisa, Italy, (3)Università di Trieste, Dipartimento di Fisica, Trieste, Italy, (4)Lockheed Martin Solar and Astrophysics Lab, Palo Alto, United States, (5)SETI Institute, Mountain View, CA, United States
 
Particle Acceleration in Relativistic Jet Shear Flows (520199)
Gary M Webb, University of Alabama in Huntsville, CSPAR, Huntsville, AL, United States, Samer Al Nussirat, Louisiana State University, Physics & Astronomy, Baton Rouge, LA, United States, Parisa Mostafavi, Princeton University, Astrophysical Sciences, Princeton, NJ, United States; Princeton University, Princeton, NJ, United States, Gang Li, University of Alabama in Huntsville, Space Science, Huntsville, United States, Nasser Barghouty, NASA MSFC, Astrophysics Branch, mail code ST12, Huntsville, AL, United States, Qiang Hu, University of Alabama in Huntsville, Huntsville, AL, United States, Jakobus Albertus le Roux, University of Alabama, Huntsville, AL, United States and Gary Paul Zank, Univ of Alabama, Huntsville, Huntsville, AL, United States
 
The Acceleration of Energetic Electrons at the Solar Flare Termination Shock (527896)
Xiangliang Kong, Shandong University at Weihai, Weihai, China, Fan Guo, Los Alamos National Lab, Los Alamos, NM, United States, Chengcai Shen, Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States, Bin Chen, New Jersey Institute of Technology, Center for Solar-Terrestrial Research, Newark, NJ, United States and Yao Chen, Shandong Univ. at Weihai, Weihai, Shandong, China
 
A computational model for exploring particle acceleration during macroscale magnetic reconnection (538599)
Harry Arnold1, James Frederick Drake1, Marc Swisdak2 and Joel Dahlin3, (1)University of Maryland College Park, College Park, MD, United States, (2)University of Maryland, College Park, MD, United States, (3)NASA Goddard Space Flight Center, Greenbelt, MD, United States
 
Transit-Time Particle Acceleration in Solar Flares (542030)
James A Miller, University of Alabama in Huntsville, Huntsville, AL, United States
 
Sub-Alfvènic Spreading of 3D Collisionless Magnetic Reconnection and Application to Two-Ribbon Solar Flares (545751)
Milton Arencibia1, Paul Cassak1, Haoming Liang1, Eric R Priest2, Jiong Qiu3 and Dana W Longcope4, (1)West Virginia University, Morgantown, WV, United States, (2)University of Saint Andrews, School of Mathematics and Statistics, Saint Andrews, United Kingdom, (3)Montana State University, Physics Department, Bozeman, MT, United States, (4)Montana State University Bozeman, Bozeman, MT, United States
 
Modelling Observable Differences in Flare Loop Evolution Due to Current Sheet Structure (550505)
John Unverferth IV, Montana State University, Bozeman, MT, United States and Dana W Longcope, Montana State University Bozeman, Bozeman, MT, United States
 
Using Fermi GBM Data to Analyze Subsecond Spikes in Solar Flare X-ray Flux as a Probe for Particle Acceleration (552307)
Trevor Knuth, University of Minnesota, Minneapolis, MN, United States and Lindsay Glesener, University of Minnesota, Twin Cities, MN, United States
 
RHESSI - GOES Comparisons of Soft X-ray Emission from Solar Flares, 2002 - 2017 (560201)
James M McTiernan, University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, Amir Caspi, Southwest Research Institute, Boulder, CO, United States and Harry Warren, Naval Research Laboratory, Washington, DC, United States
 
Analysis of the Quasi-Periodic Pulsations in the X9.3 and X8.3 Flares on 6 and 10 September 2017 Observed by SDO/EVE, PROBA2/LYRA and MAVEN/EUVM (574497)
Marie Dominique1, Andrei Zhukov1,2, Edward Thiemann3, Laurent Dolla1, Petr Heinzel4, Laurence Wauters1 and Ingolf E. Dammasch1, (1)Royal Observatory of Belgium, Brussels, Belgium, (2)Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia, (3)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (4)Astronomical Institute, Czech Academy of Sciences, Ondrejov, Czech Republic
 
Rapid time variability of the UV spectral line profiles in a small flare - evidence of chromospheric turbulence and heating (586638)
Lyndsay Fletcher, University of Glasgow, School of Physics and Astronomy, Glasgow, G12, United Kingdom, Natasha Louise Scarlet Jeffrey, University of Glasgow, Glasgow, G12, United Kingdom, Nicolas Labrosse, University of Glasgow, Glasgow, United Kingdom and Paulo Jose de Aguiar Simoes, Presbyterian Mackenzie University, Sao Paulo, Brazil
 
Three-Dimensional Numerical Studies of Plasmoid Formation in Eruptive Flares (591074)
Joel Dahlin1, Spiro K Antiochos2 and C Richard DeVore1, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)NASA GSFC, Silver Spring, MD, United States
 
Loop-top oscillations observed with IRIS spatially correlated with nonthermal emission from EOVSA in the September 10 2017 X8 Flare (606414)
Katharine Reeves1, Vanessa Polito1, Giselle Galan2, Sijie Yu3, Bin Chen4, Wei Liu5 and Gang Li6, (1)Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States, (2)Massachusetts Institute of Technology, Cambridge, MA, United States, (3)New Jersey Institute of Technology, Center for Solar-Terrestrial Research, Edison, NJ, United States, (4)New Jersey Institute of Technology, Center for Solar-Terrestrial Research, Newark, NJ, United States, (5)Stanford University, Stanford, CA, United States, (6)University of Alabama in Huntsville, Huntsville, AL, United States
 
Statistical Analysis of Solar Flare Ribbon Properties Using Observations from Solar Dynamics Observatory (614723)
Maria Kazachenko, University of Colorado at Boulder, Boulder, CO, United States, Benjamin J Lynch, University of California Berkeley, Berkeley, CA, United States, Brian T Welsch, University of Wisconsin Green Bay, Natural & Applied Sciences, Green Bay, WI, United States and Xudong Sun, Stanford University, Stanford, CA, United States
 
Measuring Decay Timescales of Downflows in Solar Flare Footpoints: Testing the 1-minute Theory (622562)
Alexander K Beltzer-Sweeney1, Elizabeth Butler2, Adam F Kowalski2 and Gianna Cauzzi3, (1)San Diego Mesa College, San Diego, CA, United States, (2)University of Colorado at Boulder, Boulder, CO, United States, (3)INAF-Ossevatorio Astrofisico di Arcetri, Firenze, Italy
 
Heating of Heavy Ions in Low-beta Compressible Turbulence (628068)
Xiangrong Fu1, Fan Guo2, Xiaocan Li3, Hui Li2 and Vadim Roytershteyn4, (1)New Mexico Consortium, Los Alamos, NM, United States, (2)Los Alamos National Lab, Los Alamos, NM, United States, (3)Los Alamos National Laboratory, Los Alamos, NM, United States, (4)Space Science Institute, Boulder, CO, United States
 
Combined Treatment of Particle Acceleration in Solar Flares and Associated CME Shocks (632582)
Meng Jin, SETI Institute Mountain View, Mountain View, CA, United States; Lockheed Martin Solar and Astrophysics Laboratory, Palo Alto, CA, United States and Vahe Petrosian, Stanford University, Stanford, CA, United States
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