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New UKSP Nugget: 42. SDO observations of a flare’s coronal “implosion”
by Iain Hannah 23 Dec '13

23 Dec '13

42. SDO observations of a flare’s coronal “implosion” by Paulo Simões, L. Fletcher and H. Hudson (University of Glasgow) & A. Russell (University of Dundee) The corona collapses at the start of a flare. http://www.uksolphys.org/?p=7616 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ UKSP Nuggets are published on a monthly basis highlighting solar physics research led from the UK. http://www.uksolphys.org/uksp-nuggets Iain Hannah and Lyndsay Fletcher ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Dr. Iain G. Hannah Astronomy & Astrophysics Group, SUPA School of Physics & Astronomy, Kelvin Building, University of Glasgow, Glasgow, UK, G12 8QQ Web: http://www.astro.gla.ac.uk/~iain/ Eml: iain.hannah(a)glasgow.ac.uk<mailto:iain.hannah@glasgow.ac.uk> Tel: +44 (0)141 330 6427 Fax: +44 (0)141 330 5183 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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RHESSI Science Nuggets in December
by Hugh Hudson 20 Dec '13

20 Dec '13

No. 214, "CMEs on young, solar-type stars," by Alicia Aarnio: stellar flares and CMEs behave like solar ones. No. 215, "The HEROES Misson: High Energy Replicated Optics to Explore the Sun," by Steven Christe and Albert Shih: focusing optics to explore the high-energy Sun. No. 216, "Flare Coronal Rain," by Hugh Hudson and Sa"m Krucker: thermal collapse seen in flare loops in a wonderful new way. See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets . Older Nuggets are also 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 18 Dec '13

18 Dec '13

MAX MILLENNIUM NEWS 18 December 2013 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 Injection of thermal and suprathermal seed particles into coronal shocks of varying obliquity -- Battarbee, M.; Vainio, R.; Laitinen, T.; Hietala, H. Calibrating Data from the Hinode/X-Ray Telescope and Associated Uncertainties -- Adam R. Kobelski, Steven H. Saar, Mark A. Weber, David E. McKenzie, Katharine K. Reeves Plasma radio emission from inhomogeneous collisional plasma of a flaring loop -- Heather Ratcliffe, Eduard. P. Kontar Reversals of the Sun's polar magnetic fields in relation to activity complexes and coronal holes -- A.V. Mordvinov and S.A. Yazev Forward-Modeling of Doppler Shifts in EUV Spectral Lines -- Y. Taroyan, S. J. Bradshaw Quiescent Reconnection Rate Between Emerging Active Regions and Preexisting Field, with Associated Heating: NOAA AR 11112, -- Tarr, L.A., Longcope, D.W., McKenzie, D.E., and Yoshimura, K. Turbulent pitch-angle scattering and diffusive transport of hard-X-ray producing electrons in flaring coronal loops -- Kontar, E. P.; Bian, N. H.; Emslie, A. G.; Vilmer, N. Observation of Heating by Flare-accelerated Electrons in a Solar Coronal Mass Ejection -- Lindsay Glesener, Sam Krucker, Hazel Bain, Robert Lin 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar activity 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: 41. Magnetic Reconnection in an X-point Collapse
by Iain Hannah 16 Dec '13

16 Dec '13

41. Magnetic Reconnection in an X-point Collapse by Jan Graf von der Pahlen and David Tsiklauri (Queen Mary University) The effects of the guide-field and boundary conditions. <http://www.uksolphys.org/?p=7423>http://www.uksolphys.org/?p=7423 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ UKSP Nuggets are published on a monthly basis highlighting solar physics research led from 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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Max Millennium News
by canfield＠mithra.physics.montana.edu 11 Dec '13

11 Dec '13

MAX MILLENNIUM NEWS 11 December 2013 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 Chromospheric and Coronal Observations of Solar Flares with the Helioseismic and Magnetic Imager -- Juan-Carlos Martinez Oliveros, Sam Krucker, Hugh S. Hudson, Pascal Saint-Hilaire, Hazel Bain, Charles Lindsey, Rick Bogart, Sebastien Couvidat, Phil Scherrer, Jesper Schou Fluctuations in the interplanetary electric potential and energy coupling between the solar-wind and the magnetosphere -- Badruddin and Aslam, O.P.M. Similarities and Distinctions in Cosmic-Ray Modulation during Different Phases of Solar and Magnetic Activity Cycles -- Aslam, O.P.M., and Badruddin Spoke-like differential rotation in a convective dynamo with a coronal envelope -- J. Warnecke, P. J. Kapyla, Maarit. J. Mantere, A. Brandenburg A swirling flare-related EUV jet -- Q. M. Zhang and H. S. Ji Comparative Study of MHD Modeling of the Background Solar Wind -- C. Gressl, A. M. Veronig, M. Temmer, D. Odstrcil, J. A. Linker, Z. Mikic, P. Riley 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar activity 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 04 Dec '13

04 Dec '13

MAX MILLENNIUM NEWS 04 December 2013 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 CME Expansion as the Driver of Metric Type II Shock Emission as Revealed by Self-Consistent Analysis of High Cadence EUV Images and Radio Spectrograms -- Kouloumvakos, A.; Patsourakos, S.; Hillaris, A.; Vourlidas, A.; Preka-Papadema, P.; Moussas, X.; Caroubalos, C.; Tsitsipis, P.; Kontogeorgos, A. Properties of Solar Ephemeral Regions at the Emergence Stage -- Shuhong Yang, Jun Zhang Statistical Properties of Super-hot Solar Flares -- Amir Caspi, Sam Krucker, R. P. Lin Influence of solar and cosmic-ray variablity on climate -- Badruddin, O.P.M. Aslam and M. Singh 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar activity 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 27 Nov '13

27 Nov '13

MAX MILLENNIUM NEWS 27 November 2013 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 On magnetic reconnection and flux rope topology in solar flux emergence -- D. MacTaggart, A.L. Haynes Toward an Efficient Prediction of Solar Flares: Which Parameters, and How? -- Georgoulis, M. K. Long-Period Oscillations of Sunspots With SOHO/MDI Data -- Efremov Vyacheslav, Parfinenko Leonid, Solov'ev Alexandr, Kirichek Elena Study of the solar wind-magnetosphere coupling on different time scales -- Badruddin and Aslam, O.P.M. Solar Modulation of Cosmic Rays during the Declining and Minimum Phases of Solar Cycle 23: Comparison with Past Three Solar Cycles -- Aslam, O.P.M., and Badruddin Sunspot splitting triggering an eruptive flare -- Rohan E. Louis, Klaus G. Puschmann, Bernhard Kliem, Horst Balthasar, Carsten Denker 3D Prominence-hosting Magnetic Configurations: Creating a Helical Magnetic Flux Rope -- Chun Xia, Rony Keppens, Yang Guo Probing latitudinal variations of the solar magnetic field in cycles 21--23 by Parker's Two-Layer Dynamo Model with meridional circulation -- Popova E., Zharkova V. and Zharkov S. 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar activity 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 RHESSI Science Nugget
by Hugh Hudson 24 Nov '13

24 Nov '13

No. 213, "The 1859 Space Weather Event Revisited," by Ed Cliver: assessing the greatest space-weather events over the centuries. See See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets . Older Nuggets are also 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 20 Nov '13

20 Nov '13

MAX MILLENNIUM NEWS 20 November 2013 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 Rossby waves and polar spots in rapidly rotating stars: Implications for stellar wind evolution -- Zaqarashvili, T.V., Oliver, R., Ballester, J.L., Carbonell, M., Khodachenko, M.L., Lammer, H., Leitzinger, M. and Odert, P. Kelvin-Helmholtz instability of twisted magnetic flux tubes in the solar wind -- Zaqarashvili, T.V., V"or"os, Z. and Zhelyazkov, I. Radio seismology of the outer solar corona -- Zaqarashvili, T.V., Melnik, V.N., Brazhenko, A.I., Panchenko, M., Konovalenko, A.A., Franzuzenko, A.V., Dorovskyy, V.V., Rucker, H.O. Torsional Alfven waves in partially ionized solar plasma: effects of neutral helium and stratification -- Zaqarashvili, T.V., Khodachenko, M.L. and Soler, R. Cut-off wavenumber of Alfven waves in partially ionized plasmas of the solar atmosphere -- Zaqarashvili, T. V., Carbonell, M., Ballester J. L. and Khodachenko, M. L. Nonlinear Force-Free Extrapolation of the Coronal Magnetic Field Based on the MHD Relaxation Method -- S. Inoue, T. Magara, V. S. Pandey, D. Shiota, K. Kusano, G. S. Choe and K. S. Kim Force-free field modeling of twist and braiding-induced magnetic energy in an active-region corona -- Thalmann, J. K., Tiwari, S. K., Wiegelmann, T. Bipolar magnetic structures driven by stratified turbulence with a coronal envelope -- J. Warnecke, I. R. Losada, A. Brandenburg, N. Kleeorin, I. Rogachevskii An Investigation of the CME of 3 November 2011 and its Associated Widespread Solar Energetic Particle Event -- A. J. Prise, L. K. Harra, S. A. Matthews, D. M. Long, A. D. Aylward 2. FROM THE EDITOR ------------------ The Max Millennium program exists to enhance all aspects of solar activity 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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Using Fermi Solar Flare Data
by Dennis, Brian R. (GSFC-6710) 15 Nov '13

15 Nov '13

I am asking for your help in assessing the value of our Fermi Guest investigator project to make the Fermi GBM and LAT data readily available to the solar physics community. We are writing a follow-on proposal to continue this project, and it will be important to show how widely the Fermi solar observations are being used, and how useful the capabilities are that we are providing to access and analyze the data. Please let me know of any use you are making of Fermi X-ray and gamma-ray observations of solar flares. Are you using or are you planning to use any of the solar-specific access and analysis tools we have provided? Here is a short description of them: * Fermi solar flare page at http://hesperia.gsfc.nasa.gov/fermi_solar/ * Fermi GBM Flare List at http://hesperia.gsfc.nasa.gov/fermi/gbm/qlook/fermi_gbm_flare_list.txt * Quick-look count-rate light curves for both the Gamma-ray Burst Monitor (GBM) NaI and BGO detectors available on the RHESSI Browser at http://sprg.ssl.berkeley.edu/~tohban/browser/?show=grth1+qlpcr+gbmd+gbmo&da… * LAT quick-look time lines available on the RHESSI Browser coming soon. * Spectral analysis of GBM data in OSPEX * Spectral analysis of LAT data in OSPEX coming soon If you have been accessing and using Fermi data, even if it is just looking at the time lines on the RHESSI Browser, please drop me a line. Let me know how you access the data, how you have used them, and what you think of our web site and the ease of access and data analysis. Also, please include references to any use or mention of Fermi data in a presentation or publication. Thanks for your help, Brian Brian R. Dennis Solar Physics Laboratory, Code 671 Goddard Space Flight Center Greenbelt, MD 20771 301-286-7983 brian.r.dennis(a)nasa.gov

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