MMScience October 2012

mmscience@solar.physics.montana.edu

4 participants
11 discussions

New EIS nugget
by Lucie Green 29 Nov '12

29 Nov '12

Dear all, We are pleased to announce the release of a new EIS nugget. This month we celebrate one year of the EIS flare catalogue and the dataset that EIS is collecting. Please visit the nugget here: http://msslxr.mssl.ucl.ac.uk:8080/SolarB/nuggets/nugget_2012feb.jsp We welcome nugget contributions from the community. Please contact Lucie Green if you are interested. Dr Lucie Green Mullard Space Science Laboratory Holmbury St. Mary Dorking Surrey RH5 6NT +44 (0)1483 204103 www.mssl.ucl.ac.uk/~lmg

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Max Millennium News
by canfield＠mithra.physics.montana.edu 31 Oct '12

31 Oct '12

MAX MILLENNIUM NEWS 31 October 2012 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 Energy and Helicity in Two Emerging Active Regions in the Sun -- Yang Liu, Peter W. Schuck Transverse kink oscillations in the presence of twist -- Terradas, J., Goossens, M. Sausage oscillations of coronal plasma structures -- Nakariakov, V.M., Hornsey, C., Melnikov, V.F. Analysis of Helioseismic Power-Spectrum Diagram of A Sunspot -- Junwei Zhao & Dean-Yi Chou Helioseismic Holography of an Artificial Submerged Sound Speed Perturbation and Implications for the Detection of Pre-Emergence Signatures of Active Regions -- Braun, D.C. Differential Emission Measure Analysis of Multiple Structural Components of Coronal Mass Ejections in the Inner Corona -- X. Cheng, J. Zhang, S. H. Saar, & M. D. Ding Solar flare hard X-ray spikes observed by RHESSI: a case study -- J. Qiu, J. X. Cheng, G. J. Hurford, Y. Xu, and H. Wang Improved basis set for low frequency plasma waves -- P. M. Bellan Measurements of electron anisotropy in solar flares using albedo with RHESSI X-ray data. -- Dickson, E.C.M. and Kontar, E.P. Resolving Azimuth Ambiguity Using Vertical Nature of Solar Quiet-Sun Magnetic Fields -- Sanjay Gosain and Alexei A. Pevtsov A MULTI-SPACECRAFT VIEW OF A GIANT FILAMENT ERUPTION DURING 26/27 SEPTEMBER 2009 -- Sanjay Gosain, Brigitte Schmieder, Guy Artzner, Sergei Bogachev, and Tibor Toeroek DUAL TRIGGER OF TRANSVERSE OSCILLATIONS IN A PROMINENCE BY EUV FAST AND SLOW CORONAL WAVES: SDO/AIA AND STEREO/EUVI OBSERVATIONS -- Sanjay Gosain and Claire Foullon 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 canfield at physics.montana.edu

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New UKSP nugget: 28. Space weather at the Institution of Engineering and Technology
by Iain Hannah 30 Oct '12

30 Oct '12

28. Space weather at the Institution of Engineering and Technology<http://www.uksolphys.org/?p=5490> by Chris Davis, RAL Space Highlights of the IET “Solar Storms: Predicting and protecting against geomagnetic storms” meeting. http://www.uksolphys.org/?p=5490 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ UKSP Nuggets are published on a monthly basis highlighting solar physics research in the UK http://www.uksolphys.org/uksp-nuggets Iain Hannah and Lyndsay Fletcher ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Dr. Iain G. Hannah Eml: iain.hannah(a)glasgow.ac.uk<mailto:iain.hannah@glasgow.ac.uk> Astronomy & Astrophysics Group, Tel: +44 (0)141 330 6427 School of Physics & Astronomy, Fax: +44 (0)141 330 5183 Kelvin Building, University of Glasgow, Glasgow, UK, G12 8QQ Web: http://www.astro.gla.ac.uk/~iain/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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Announcing RHESSI Science Nugget No. 187
by Hugh Hudson 29 Oct '12

29 Oct '12

No. 187, "Glasgow Callisto optimistic: first light comes in focus," by Heather Ratcliffe and Eduard Kontar. Glasgow's own solar radio observatory comes on line and detects a RHESSI flare. http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Glasgow_Callisto_optimi… Older Nuggets are available at http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets (the current series, 2008-present), and at http://sprg.ssl.berkeley.edu/~tohban/nuggets/ (the original series, 2005-2008). We publish these at roughly two-week intervals and welcome contributions, which should be related, at least loosely, to RHESSI science.

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Max Millennium News
by canfield＠mithra.physics.montana.edu 24 Oct '12

24 Oct '12

MAX MILLENNIUM NEWS 24 October 2012 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 Modeling Magnetic Field Structure of a Solar Active Region Corona using Nonlinear Force-Free Fields in Spherical Geometry -- Y. Guo, M. D. Ding, Y. Liu, X. D. Sun, M. L. DeRosa, T. Wiegelmann Emerging dimmings of active regions observed by SDO -- Jun Zhang, Shuhong Yang, Yang Liu, Xudong Sun Magnetic Topology of Quiescent Prominence Bubbles -- Dudik J., Aulanier G., Schmieder B., Zapior M., Heinzel P. SDO/AIA Observations of Large-Amplitude Longitudinal Oscillations in a Solar Filament -- Ting Li and Jun Zhang Solar Flares and Energetic Particles -- N. Vilmer The Morphologic Properties of Magnetic networks over the Solar Cycle 23 -- Chong Huang, Yihua Yan, Yin Zhang, Baolin Tan and Gang Li On the Relationship Between Coronal Magnetic Decay Index and CME Speed -- Yan Xu, Chang Liu, Ju Jing, & Haimin Wang Resolving the Azimuthal Ambiguity in Vector Magnetogram Data with the Divergence-Free Condition: the Effects of Noise and Limited Spatial Resolution -- Ashley D. Crouch Least-Squares Fitting Methods for Estimating the Winding Rate in Twisted Magnetic-Flux Tubes -- Ashley D. Crouch 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 canfield at physics.montana.edu

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Announcing a new EIS nugget for October 2012
by Deb Baker 24 Oct '12

24 Oct '12

Announcing a new EIS Nugget for October 2012: “Non-thermal response of the corona to the magnetic flux dispersal in the photosphere of a decaying active region" by Louise Harra (UCL/MSSL) and Valentyna Abramenko (BBSO/NJIT). Please view the new nugget via URL address – http://msslxr.mssl.ucl.ac.uk:8080/SolarB/eisnuggets.jsp We publish these at roughly one month intervals. We welcome contributions from the solar community. Please contact Deb Baker (db2 at mssl.ucl.ac.uk) or Lucie Green (lmg at mssl.ucl.ac.uk) if you would like to submit a nugget.

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Announcing RHESSI Science Nugget No. 186
by Hugh Hudson 22 Oct '12

22 Oct '12

No. 186, "Photospheric Temperature Gradient," by Martin Fivian and Hugh Hudson: is there a global temperature structure in the solar photosphere outside the magnetic elements? http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Photospheric_Temperatur… Older Nuggets are available at http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets (the current series, 2008-present), and at http://sprg.ssl.berkeley.edu/~tohban/nuggets/ (the original series, 2005-2008). We publish these at roughly two-week intervals and welcome contributions, which should be related, at least loosely, to RHESSI science.

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Max Millennium News
by canfield＠mithra.physics.montana.edu 17 Oct '12

17 Oct '12

MAX MILLENNIUM NEWS 17 October 2012 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 RHESSI and SDO/AIA observations of the chromospheric and coronal plasma parameters during a solar flare -- Marina Battaglia, Eduard P. Kontar X-ray and UV investigation into the magnetic connectivity of a solar flare -- H. A. S. Reid, N. Vilmer, G. Aulanier, E. Pariat Evolution of the Solar Flare Energetic Electrons in the Inhomogeneous Inner Heliosphere -- Hamish A. S. Reid, Eduard P. Kontar Non-neutralized Electric Current Patterns in Solar Active Regions: Origin of the Shear-Generating Lorentz Force -- M. K. Georgoulis, V. S. Titov, & Z. Mikic CIRCULAR RIBBON FLARES AND HOMOLOGOUS JETS -- Haimin Wang and Chang Liu 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 canfield at physics.montana.edu

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Max Millennium News
by canfield＠mithra.physics.montana.edu 10 Oct '12

10 Oct '12

MAX MILLENNIUM NEWS 10 October 2012 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 Analytic approximate seismology of propagating MHD waves in the solar corona -- M. Goossens, R. Soler, I. Arregui, J. Terradas Long-Term Measurements of Sunspot Magnetic Tilt Angles -- Jing Li & Roger Ulrich Coronal hole boundaries at small scales: IV. SOT view-Magnetic field properties of small-scale transient brightenings in coronal holes -- Z. Huang, M. S. Madjarska, J. G. Doyle, D. A. Lamb Acoustic Mode Frequencies of the Sun during the Minimum Phase between Solar Cycles 23 and 24 -- S.C. Tripathy, K. Jain, F. Hill 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 canfield at physics.montana.edu

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Announcing a new RHESSI Science Nugget
by Hugh Hudson 07 Oct '12

07 Oct '12

No. 185, "Energy Partition in Large Solar Eruptive Events," by Gordon Emslie and Brian Dennis: where flare energy comes from, and where it goes to. http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Energy_Partition_in_Lar… Older Nuggets are available at http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets (the current series, 2008-present), and at http://sprg.ssl.berkeley.edu/~tohban/nuggets/ (the original series, 2005-2008). We publish these at roughly two-week intervals and welcome contributions, which should be related, at least loosely, to RHESSI science.

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MMScience October 2012