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TESS session on energy release
by Jiong Qiu 13 Apr '22

13 Apr '22

Dear colleagues, We would like to bring to your attention a topical session on "Explosive Energy Release Processes in the Solar Corona and Earth's Magnetosphere," which will take place during the Triennial Earth-Sun Summit (TESS) (https://aas.org/meetings/tess2022) in Bellevue/Seattle, WA, on 8-11 August 2022. As the title suggests, we invite contributions that facilitate an in-depth interdisciplinary discussion of the fundamental processes related to explosive energy release in both the solar corona and the magnetosphere. Studies that contrast the similarities and differences in the two environments are particularly encouraged. Possible focal topics include the roles of ideal versus resistive instability; the triggers for fast magnetic reconnection; the mechanisms of particle acceleration and plasma heating in the reconnection site, field-line shrinkage region, and elsewhere; the connections between multiscale spatiotemporal structures and dynamics. The full session description is included below. The deadline for abstract submission is April 15 (this Friday). 21. Title: Explosive Energy Release Processes in the Solar Corona and Earth's Magnetosphere Conveners: Bin Chen (NJIT), Vadim Uritsky (CUA), James Drake (UMD); Spiro Antiochos (NASA/GSFC); Joel Dahlin (NASA/GSFC); Rick DeVore (NASA/GSFC); Fan Guo (LANL); Maria Kazachenko (CU Boulder); Marit Oieroset (UC Berkeley); Jiong Qiu (MSU) Description: This session focuses on explosive energy release processes occurring in the solar corona (solar flares, coronal mass ejections, jets, etc.) and in the Earth?s magnetosphere (magnetic storms, substorms, etc.). They share the widely important process of explosive release of the previously stored magnetic energy, as well as the subsequent conversion of the magnetic energy to other forms of energy such as mass motion, accelerated particles, and heated plasma. Despite the vastly different plasma density and magnetic field strength values, the system length scales and Alfv?n speeds in the two systems are strikingly similar. In both cases, the impulsive energy release is usually followed by a fast field-line shrinkage (or dipolarization) of the reconnected field lines, forming closed magnetic field lines anchored to the surface of the Sun/Earth. Observations and models have shown that the processes of energy build-up, triggering, release, and conversion involved in both systems are highly complex and dynamic. They include a plethora of physical processes including, but not limited to, ideal/resistive instabilities, magnetic reconnection, bursty plasma flows, turbulence/waves, shocks, and magnetic islands. We invite contributions that facilitate an in-depth interdisciplinary discussion of these fundamental processes. Studies that contrast the similarities and differences in the two environments are particularly encouraged. Possible focal topics include the roles of ideal versus resistive instability; the triggers for fast magnetic reconnection; the mechanisms of particle acceleration and plasma heating in the reconnection site, field-line shrinkage region, and elsewhere; the connections between multiscale spatiotemporal structures and dynamics. Best regards, Bin Chen, Vadim Uritsky, on behalf of the session conveners

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Max Millennium News
by Keiji YOSHIMURA 13 Apr '22

13 Apr '22

MAX MILLENNIUM NEWS 13 April 2022 CONTENTS 1. E-PRINTS POSTED IN THE PAST WEEK 2. FROM THE EDITOR ===================================================================== 1. E-PRINTS POSTED IN THE PAST WEEK ----------------------------------- > http://solar.physics.montana.edu/cgi-bin/eprint/default_page.pl Eigen vectors of solar magnetic field in cycles 21-24 and their links to solar activity indices -- Zharkova V.V. and Shepherd S.J. 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar flare research. If you have news that is of broad interest to that community, feel free to send your message to the MMScience e-mail list: http://solar.physics.montana.edu/max_millennium/mmlists.shtml Address questions to keiji.yoshimura at montana.edu

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Max Millennium News
by Keiji YOSHIMURA 06 Apr '22

06 Apr '22

MAX MILLENNIUM NEWS 6 April 2022 CONTENTS 1. E-PRINTS POSTED IN THE PAST WEEK 2. FROM THE EDITOR ===================================================================== 1. E-PRINTS POSTED IN THE PAST WEEK ----------------------------------- > http://solar.physics.montana.edu/cgi-bin/eprint/default_page.pl Ambipolar diffusion: Self-similar solutions and MHD code testing. Cylindrical symmetry -- F. Moreno-Insertis, D. Nobrega-Siverio, E. R. Priest, A. W. Hood 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar flare research. If you have news that is of broad interest to that community, feel free to send your message to the MMScience e-mail list: http://solar.physics.montana.edu/max_millennium/mmlists.shtml Address questions to keiji.yoshimura at montana.edu

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Max Millennium News
by Keiji YOSHIMURA 30 Mar '22

30 Mar '22

MAX MILLENNIUM NEWS 30 March 2022 CONTENTS 1. E-PRINTS POSTED IN THE PAST WEEK 2. FROM THE EDITOR ===================================================================== 1. E-PRINTS POSTED IN THE PAST WEEK ----------------------------------- > http://solar.physics.montana.edu/cgi-bin/eprint/default_page.pl Statistical analysis of circular-ribbon flares -- Yanjie Zhang, Qingmin Zhang, Dechao Song, Shuting Li, Jun Dai, Zhe Xu, Haisheng Ji 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar flare research. If you have news that is of broad interest to that community, feel free to send your message to the MMScience e-mail list: http://solar.physics.montana.edu/max_millennium/mmlists.shtml Address questions to keiji.yoshimura at montana.edu

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Solar radio science nuggets in March 2022
by Eduard Kontar 29 Mar '22

29 Mar '22

Spectral Analysis of Solar Radio Type III Bursts from 20 kHz to 410 MHz by K. Sasikumar Raja et al.* https://www.astro.gla.ac.uk/users/eduard/cesra/?p=3221 New results from the spectral observations of solar coronal type II radio bursts by R. Ramesh et al.* https://www.astro.gla.ac.uk/users/eduard/cesra/?p=3231 CESRA Highlights of Solar Radio Physics, aka CESRA Nuggets, are short communications written in language accessible to a non-expert in the specific area and designed to keep solar and heliophysics communities informed and up-to-date about current research. The highlights can be followed, discussed, commented and shared via http://www.facebook.com/solarcesra/ and http://twitter.com/CESRA_community.

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Max Millennium News
by Keiji YOSHIMURA 23 Mar '22

23 Mar '22

MAX MILLENNIUM NEWS 23 March 2022 CONTENTS 1. E-PRINTS POSTED IN THE PAST WEEK 2. FROM THE EDITOR ===================================================================== 1. E-PRINTS POSTED IN THE PAST WEEK ----------------------------------- > http://solar.physics.montana.edu/cgi-bin/eprint/default_page.pl Nanoflare distributions over solar cycle 24 based on SDO/AIA differential emission measure observations -- Stefan Purkhart and Astrid M. Veronig The Fractality and Size Distributions of Astrophysical Self-Organized Criticality Systems -- Markus J. Aschwanden On modeling ICME cross-sections as static MHD columns -- Debesh Bhattacharjee, Prasad Subramanian, Volker Bothmer, Teresa Nieves-Chinchilla, Angelos Vourlidas SolO/EUI Observations of Ubiquitous Fine-scale Bright Dots in an Emerging Flux Region: Comparison with a Bifrost MHD Simulation -- Tiwari, Sanjiv K.; Hansteen, Viggo H.; De Pontieu, Bart; Panesar, Navdeep K.; Berghmans, David 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar flare research. If you have news that is of broad interest to that community, feel free to send your message to the MMScience e-mail list: http://solar.physics.montana.edu/max_millennium/mmlists.shtml Address questions to keiji.yoshimura at montana.edu

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Max Millennium News
by Keiji YOSHIMURA 16 Mar '22

16 Mar '22

MAX MILLENNIUM NEWS 16 March 2022 CONTENTS 1. E-PRINTS POSTED IN THE PAST WEEK 2. FROM THE EDITOR ===================================================================== 1. E-PRINTS POSTED IN THE PAST WEEK ----------------------------------- > http://solar.physics.montana.edu/cgi-bin/eprint/default_page.pl Magnetic Winding as an Indicator of Flare Activity in Solar Active Regions -- Raphaldini, B., Prior, C., MacTaggart, D. Helicity shedding by flux rope ejection -- Kliem, B., and Seehafer, N. 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar flare research. If you have news that is of broad interest to that community, feel free to send your message to the MMScience e-mail list: http://solar.physics.montana.edu/max_millennium/mmlists.shtml Address questions to keiji.yoshimura at montana.edu

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Max Millennium News
by Keiji YOSHIMURA 09 Mar '22

09 Mar '22

MAX MILLENNIUM NEWS 9 March 2022 CONTENTS 1. E-PRINTS POSTED IN THE PAST WEEK 2. FROM THE EDITOR ===================================================================== 1. E-PRINTS POSTED IN THE PAST WEEK ----------------------------------- > http://solar.physics.montana.edu/cgi-bin/eprint/default_page.pl Electron acceleration from the interaction of three crossed parallel Alfven waves -- K.Daiffallah New Solar Flare Calcium Abundances with no Surprises: Results from the SMM Bent Crystal Spectrometer -- J. Sylwester, B. Sylwester, K. J. H. Phillips, A. Kepa First detection of metric emission from a solar surge -- C. E. Alissandrakis, S. Patsourakos, A. Nindos, C. Bouratzis and A. Hillaris 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar flare research. If you have news that is of broad interest to that community, feel free to send your message to the MMScience e-mail list: http://solar.physics.montana.edu/max_millennium/mmlists.shtml Address questions to keiji.yoshimura at montana.edu

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Max Millennium News
by Keiji YOSHIMURA 02 Mar '22

02 Mar '22

MAX MILLENNIUM NEWS 2 March 2022 CONTENTS 1. E-PRINTS POSTED IN THE PAST WEEK 2. FROM THE EDITOR ===================================================================== 1. E-PRINTS POSTED IN THE PAST WEEK ----------------------------------- > http://solar.physics.montana.edu/cgi-bin/eprint/default_page.pl Oscillation Dynamics in Short-Lived Facula Regions during Their Lifetime -- Andrei Chelpanov, Nikolai Kobanov 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar flare research. If you have news that is of broad interest to that community, feel free to send your message to the MMScience e-mail list: http://solar.physics.montana.edu/max_millennium/mmlists.shtml Address questions to keiji.yoshimura at montana.edu

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RHESSI Nuggets in February 2022
by Hugh Hudson 26 Feb '22

26 Feb '22

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets No. 426, “A demonstration of STIX hard X-ray imaging spectroscopy capabilities for an X-class flare (SOL2021-10-28),” by Andrea BATTAGLIA, Hannah COLLIER, and Säm KRUCKER. STIX imaging of an X-class flare marks its successful beginning. No. 427, “Probing chromospheric current sheets using SST and ALMA co-observations,” by Joäo da SILVA SANTOS. Emerginc magnetic flux appears in ALMA images to be reflecting coronal current sheets. We welcome contributions to the RHESSI Nuggets, and the topics may wander some distance away from specifically RHESSI results if they are generally interesting. See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets for these and others. Comments about specific flares can often be found by searching for their SOLyyyy-mm-dd identifier from this home page.

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