Flux Emergence Workshop (FEW2015)

Monday, June 15, 2015 to Friday, June 19, 2015

HAO/NCAR, Foothills Facility Bldg #2 (FL2), Boulder, CO

Participant Group image
FEW Group Photograph.

Carrying on the great tradition that was started by the FEW2007 in St. Andrew, we (Matthias Rempel and Yuhong Fan) organized the Flux Emergence Workshop (FEW2015) to be hosted at the High Altitude Observatory of the National Center for Atmospheric Research at beautiful Boulder Colorado on 15-19 June 2015.

As is in previous FEWs, the workshop focused on recent advances in studying all aspects of the flux emergence process on the sun, from its connection to the solar dynamo to its driving solar eruptive activities in the solar atmosphere and corona. The workshop topics included:

• Dynamo and emerging flux in the solar convection zone
• Active region formation
• Flux emergence and jets
• Flux emergence and coronal mass ejections
• Model coupling and data driven simulations

The workshop had around 40 participants.

Matthias Rempel (rempel@ucar.edu) and Yuhong Fan (yfan@ucar.edu)

 **Abtract Booklet** **Agenda Document**
 

 

 Monday June 15 2015
Bus Transportation: Leave Millenium 8:15 AM
SpeakerInstituteTitleDurationStart Time
Continental Breakfast/Registration  0:308:30 AM
Matthias RempelHAO/NCARIntroductions & Welcome0:159:00 AM
   
Chair: Yuhong Fan Session 1: Dynamo and emerging flux in the solar convection zone  
Nicholas Nelson(1), Mark Miesch(2)(1) Los Alamos National Lab, (2) HAO/NCARRapid Turbulent Generation of Buoyant Magnetic Loops in Global Convective Dynamos0:309:15 AM
Hideyuki Hotta, Matthias RempelHAO/NCARA comprehensive convective dynamo simulation with flux emergence and near surface concentration0:309:45 AM
Gopal Hazra, Arnab Rai ChoudhuriDepartment of Physics Indian Institute of ScienceThe treatment of magnetic buoyancy in flux transport dynamo0:3010:15 AM
Morning Break  0:3010:45 AM
Dibyendu NandyCenter of Excellence in Space Sciences India, Indian Institute of Science Education and Research KolkataMagnetic Helicity and Flux Tube Dynamics in the Solar Convection Zone0:3011:15 AM
Mark Linton, James LeakeNaval Research LaboratoryModeling the Effect of Twist on Emerging Solar Magnetic Fields0:3011:45 AM
Lunch (on your own)  1:3012:15 PM
Chair: Fernando Moreno-Insertis    
L. Jouve (1), S. Brun (2), G. Aulanier (3)(1) Institut de Recherche en Astrophysique et Planétologie, Toulouse, France, (2) Service d'Astrophysique du CEA, Saclay, France, (3) Observatoire de Paris-Meudon, Meudon, FranceInteraction of buoyant magnetic fluxtubes as a possible origin of complex solar active regions0:301:45 PM
Yori Fournier, Rainer Arlt, Udo Ziegler, Klaus G. StrassmeierLeibniz Institute for Astrophysics Potsdam (AIP)Unified scaling relation for rising flux tubes in solar-like stars0:302:15 PM
Afternoon Break  0:302:45 PM
Doug Braun(1), Aaron Birch(2), Matthias Rempel(3), Hannah Schunker(2)(1) NWRA, (2) MPS, (3) HAO/NCARFlows Associated with Emerging Sunspot Groups as determined from an HMI-based Survey0:303:15 PM
A.S. Brun (1), M. Svanda (2), T. Roudier (3), L. Jouve (3, 1)(1) Service d'Astrophysique/AIM, CEA-Saclay, France, (2) Astronomical Institute, Charles University in Prague, Faculty of Mathematics and Physics, Czech Republic, (3) Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, FrancePolar cap magnetic field reversals during solar grand minima: could pores be the missing ingredients?0:303:45 PM
DiscussionMatthias Rempel/Yuhong Fan 0:304:15 PM
Adjorn  4:45 PM
Bus Transportation: Leave FL 5:15 pm
 
  Tuesday June 16 2015
Bus Transportation: Leave Millenium 8:15 AM
SpeakerInstituteTitleDurationStart Time
Continental Breakfast/Registration  0:308:30 AM
Chair: Mark Cheug    
Marc DeRosaLockheed Martin Solar and Astrophysics LaboratoryEffects of Flux Emergence on the Buildup of Polar Fields over Multiple Activity Cycles0:309:00 AM
Åke NordlundNiels Bohr InstituteMulti-Scale Emerging Magnetic Flux and Dynamo Action in the Sun0:309:30 AM
Maria Weber (Metcalf Lecturer)(1) University of Exeter, (2) HAO/NCARMagnetic Flux Tubes in the Turbulent Solar Interior: Toward Linking Fibril Magnetic Fields with Active Regions0:4510:00 AM
Morning Break  0:3010:45 AM
 Session 2: Active region formation  
Robert F. Stein (1), Åke Nordlund (2)(1) Physics and Astronomy Department, Michigan State University, (2) Niels Bohr Institute, Copenhagen UniversityComparison of Buoyant and Non-Buoyant Flux Emergence Events0:3011:15 AM
Joern Warnecke(1), Illa R. Losada(2,3), Axel Brandenburg(2,3), Nathan Kleeorin(4,2), Igor Rogachevskii(4,2)(1) Max-Planck-Institut Sonnensystemforschung, (2) NORDITA, (3) Stockholm University, (4) Ben-Gurion University of the NegevBipolar region formation in stratified two-layer turbulence0:3011:45 AM
Lunch (on your own)  1:3012:15 PM
Chair: S. Brun    
Shinsuke Takasao(1), Yuhong Fan(2), Mark C.M. Cheung(3), Kazunari Shibata(4)(1) Kyoto University, (2) HAO, (3) LMSAL, (4) Kyoto UniversityOn the formation of a complex quadrupole active region0:301:45 PM
Piyali ChatterjeeInstitute of theoretical astrophysics, University of Oslo, Oslo, NorwayFormation of complex active regions at the photosphere due to instability of an Omega loop0:302:15 PM
Afternoon Break  0:302:45 PM
Zoe Sturrock, Alan Hood, Vasilis ArchontisUniversity of St AndrewsSunspot rotations due to the emergence of twisted flux0:303:15 PM
S. Toriumi(1), Y. Katsukawa(1), and M.C.M. Cheung(2)(1) NAOJ, (2) LMSALLight Bridge Structures Formed in Emerging Active Regions0:303:45 PM
Derek LambSouthwest Research InstituteSpatio-temporal Patterns in Arcsecond-scale Flux Emergence Events0:304:15 PM
Adjorn  4:45 PM
Bus Transportation: Leave FL 5:15 pm
Conference Dinner NCAR Mesa Lab2:005:45 PM
Bus Transportation: Leave Mesa Lab 8:00 pm
 
  Wednesday June 17 2015
Bus Transportation: Leave Millenium 8:15 AM
SpeakerInstituteTitleDurationStart Time
Continental Breakfast/Registration  0:308:30 AM
Chair: Mark Linton  
Eric JonesUniversity of Southern QueenslandEmergence and Decay rates of Magnetic Flux in Active Regions and Sunspots0:309:00 AM
Takafumi Kaneko and Takaaki YokoyamaDepartment of Earth and Planetary Science, The University of TokyoProcess for triggering in-situ prominence formation inside flux rope associated with footpoint motion or flux emergence0:309:30 AM
Matthias RempelHAO/NCARFlux emergence from the upper convection zone into the corona with the MURaM code0:3010:00 AM
Morning Break  0:3010:30 AM
Yang LiuStanford UniversityTest of the Hemispheric Rule of Magnetic Helicity in the Sun Using the HMI Data0:3011:00 AM
  Session 3: Flux emergence and jets
Lokesh BhartiBal Shiksha Sadan Society, Udaipur, IndiaMagnetic reconnection as a source of jets from a penumbral intrusion into a sunspot umbra0:3011:30 AM
Lunch (on your own)  1:3012:00 PM
Chair: Matthias Rempel  
Brigitte SchmiederCNRS-LESIA Observatoire de ParisFlux emergence: thermal and magnetic signatures from IRIS and HMI0:301:30 PM
Karin MuglachNASA/GSFC, Artep, Inc.The Photospheric Footprint of Coronal Hole Jets0:302:00 PM
Eon Jui Lee, Vasilis Archontis, Alan HoodUniversity of St AndrewsDynamic coupling between eruptions and jets in emerging flux regions0:302:30 PM
Afternoon Break  0:303:00 PM
Fang Fang(1), Yuhong Fan(2), Scott W. McIntosh(2)(1) Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, (2) High Altitude Observatory, National Center for Atmospheric ResearchEruption of Solar Jets in Simulations of Flux Emergence0:303:30 PM
David MacTaggart (1), Andrew Haynes (2), Salvo Guglielmino (3), Radostin Simitev (1), Francesca Zuccarello (3)(1) School of Mathematics & Statistics, University of Glasgow, (2) School of Mathematics & Statistics, University of St Andrews, (3) Dipartimento di Fisica e Astronomia - Sezione Astrofisica, Università di CataniaTopological flux emergence0:304:00 PM
Discussion  0:304:30 PM
Adjorn  5:00 PM
Bus Transportation: Leave FL 5:30 pm
 
  Thursday June 18 2015
Bus Transportation: Leave Millenium 8:15 AM
SpeakerInstituteTitleDurationStart Time
Continental Breakfast/Registration  0:308:30 AM
Chair: Alan Hood  
F. Moreno-Insertis (1), J. Martinez Sykora (2), V. Hansteen (3)(1) Instituto de Astrofisica de Canarias and Dept of Astrophysics, Univ La Laguna, Tenerife, Spain, (2) LMSAL, California, USA, (3) Institute of Theoretical Astrophysics, University of Oslo, NorwaySmall-scale flux emergence in the quiet Sun0:309:00 AM
Pia Zacharias (1), Viggo Hansteen (2)(1,2) Institute of Theoretical Astrophysics, University of OsloChromospheric dynamics during flux emergence in 3D radiative MHD models of the solar atmosphere0:309:30 AM
Viggo Hansteen(1) and Vasilis Archontis(2)(1) Institute of Theoretical Astrophysics, University of Oslo, (2) School of Mathematics and Statistics, University of St AndrewsRealistic' 3D simulations of a small flare resulting from flux emergence0:3010:00 AM
Morning Break  0:3010:30 AM

Daniel Nóbrega-Siverio (1), Fernando Moreno-Insertis (2), Juan Martínez-Sykora (3, 4)

(1) Instituto de Astrofísica de Canarias, (2) Department of Astrophysics of Universidad de La Laguna, (3) Lockheed Martin Solar and Astrophysics Laboratory, (4) Bay Area Environmental Research InstituteCold jet following flux emergence in a radiation MHD experiment including heat conduction.0:3011:00 AM
Haruhisa Iijima(1), Takaaki Yokoyama(2)(1) The University of Tokyo, (2) The University of TokyoTwo-dimensional simulation of chromospheric jet formation with convection and emerging magnetic flux0:3011:30 AM
Lunch (on your own)  1:3012:00 PM
Chair: Juan Martinez-Sykora Session 4: Flux emergence and coronal mass ejections
Klaus Galsgaard(1), Fernando Moreno-Insertis(2)(1) Niels Bohr Institute, University of Copenhagen, Denmark, (2) Instituto de Astroficica de Canaries, Tenerife, SpainEruptions in an emerging magnetic flux tube0:301:30 PM
James Leake (1), Mark Linton (1), Tibor Torok (2)(1) Naval Research Laboratory (2) Predictive Science IncThe non-neutralization of electric currents in active regions: Insights from Numerical Simulations0:302:00 PM
Etienne Pariat (1), James Leake (2), Mark Linton (3), Gherardo Valori (4), Pascal Démoulin (1), Kevin Dalmasse (5)(1) LESIA, Observatoire de Paris, CNRS, Université Pierre et Marie Curie, Université Denis Diderot, France, (2) College of Science, George Mason University, USA, (3) U.S. Naval Research Laboratory, USA, (4) UCL-Mullard Space Science Laboratory, UK, (5) CISL/HAO, National Center for Atmospheric Research, USAComparison of the magnetic topology and magnetic helicity evolution in eruptive and non-eruptive flux emergence simulations0:302:30 PM
Afternoon Break  0:303:00 PM
M. Zhang(1), Y. L. Song(1) & Y. Fan(2)(1) National Astronomical Observatories, Chinese Academy of Sciences, Datun Road A20, Chaoyang District, Beijing 100012, China, (2) National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307Impulsive helicity injection as the imprint of magnetic implosion0:303:30 PM
Meng JinUCAR/LMSALThe Role of Large-scale Magnetic Coupling for Solar Corona Sympathy0:304:00 PM
DiscussionMatthias Rempel/Yuhong Fan 0:304:30 PM
Adjorn  5:00 PM
Bus Transportation: Leave FL 5:30 pm
 
  Friday June 19 2015
Bus Transportation: Leave Millenium 8:15 AM
SpeakerInstituteTitleDurationStart Time
Continental Breakfast/Registration  0:308:30 AM
Chair: Brigitte Schmieder  
Alan TitleLockheed Martin Solar and Astrophysics LaboratoryOf the relations between flare rates and global properties of global flux emergence0:309:00 AM
Yuhong FanHAO/NCARThe eruption of coronal flux ropes underlying coronal streamers0:309:30 AM
Morning Break0:3010:00 AM
  Session5: Model coupling and data driven simulations
T. Torok (1), J.E. Leake (2), R. Lionello (1), Z. Mikic (1), M.G. Linton (3)(1) Predictive Science Inc. (PSI), San Diego, CA, (2) George Mason University (GMU), Fairfax, VA, (3) US Naval Research Lab (NRL), Washington, DCSolar Eruptions Triggered by Flux Emergence0:3010:30 AM
Fisher, G. H. and the CGEM TeamUC Berkeley Space Sciences LaboratoryThe Coronal Global Evolutionary Model (CGEM)0:3011:00 AM
Maria D. Kazachenko and the CGEM teamSpace Sciences Lab, UC BerkeleyCoronal Global Evolutionary Model: deriving electric fields0:3011:30 AM
Lunch (on your own)1:3012:00 PM
George FisherSpace Sciences Lab, UC BerkeleyConcluding Remarks and Perspectives0:201:30 PM
Summary and Discussion  Further discussion and plans for FEW 20170:401:50 PM
Adjorn  2:30 PM
Bus Transportation: Leave FL 3:00 PM
File Attachment(s): 

Last NameFirst NameInstitution Name
BhartiLokeshBal Shiksha Sadan Society, Udaipur, India
BraunDougNWRA
BrunAllan SachaCEA-Saclay
ChatterjeePiyaliInstitute of theoretical astrophysics, University of Oslo, Norway
CheungMarkLockheed Martin Solar & Astrophysics Lab
DeRosaMarcLockheed Martin Solar and Astrophysics Laboratory
FanYuhongNCAR
FangFangLaboratory for Atmospheric and Space Physics, University of Colorado Boulder
FisherGeorgeUC Berkeley
FournierYoriLeibniz Institute for Astrophysics (AIP)
GalsgaardKlausNiels Bohr Institute
GudiksenBorisInstitute of theoretical astrophysics, University of Oslo, Norway
HansteenViggoInsititute of theoretical astrophysics, University of Oslo, Norway
HazraGopalDepartment of Physics Indian Institute of Science
HoodAlanUniversity of St Andrews
HottaHideyukiHAO/NCAR
IijimaHaruhisaThe University of Tokyo
JinMengUCAR, LMSAL
JouveLaureneInstitut de Recherche en Astrophysique et Planetologie, Toulouse, France
KanekoTakafumiThe University of Tokyo
KazachenkoMariaSpace Sciences Laboratory
LambDerekSouthwest Research Institute
LeakeJamesNaval Research Laboratory (NRL)
LeeEon JuiUniversity of St Andrews
LintonMarkNaval Research Lab
LiuYangStanford University
MacTaggartDavidUniversity of Glasgow
MahajanSushantGeorgia State University
Martinez SykoraJuanBay Area Environmental Research Institute
Moreno-InsertisFernandoInstituto de Astrofisica de Canarias
MuglachKarinNASA/GSFC, Artep, Inc.
NandiDibyenduCenter of Excellence in Space Sciences India, IISER Kolkata
NelsonNicholasLos Alamos National Lab
Nóbrega-SiverioDanielInstituto de Astrofísica de Canarias
NordlundÅkeNiels Bohr Institute
PariatEtienneLESIA, Observatoire de Paris
RempelMatthiasHAO/NCAR
SchmiederBrigitteCNRS-LESIA -Observatoire de Paris
SteinRobertMichigan State University
SturrockZoeUniversity of St Andrews
TakasaoShinsukeKyoto University
TitleAlanLM Advance Technology Center
ThompsonMichaelNCAR/HAO
ToomreJuriJILA, University of Colorado
ToriumiShinNational Astronomical Observatory of Japan
TorokTiborPredictive Science Inc.
WarneckeJörnMax-Planck-Institute for Solar System Research
WeberMariaUniversity of Exeter
WoodardMartinNWRA
ZachariasPiaInstitute of Theoretical Astrophysics, University of Oslo, Norway
ZhangMeiNational Astronomical Observatories, Chinese Academy of Sciences