MMScience April 2018

mmscience@solar.physics.montana.edu

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7 discussions

Max Millennium News
by richard.canfield＠montana.edu 25 Apr '18

25 Apr '18

MAX MILLENNIUM NEWS 25 April 2018 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 Negative flare in the He I 10830 A line in facula -- Nikolai Kobanov, Andrei Chelpanov, Vasiliy Pulyaev Time resolved spectroscopic observations of an M-dwarf flare star EV Lac during a flare -- Satoshi Honda, Yuta Notsu, Kosuke Namekata, Shota Notsu, Hiroyuki Maehara, Kai Ikuta, Daisaku Nogami, and Kazunari Shibata 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 richard.canfield at montana.edu

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Max Millennium News
by richard.canfield＠montana.edu 18 Apr '18

18 Apr '18

MAX MILLENNIUM NEWS 18 April 2018 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 Two Episodes of Magnetic Reconnections During a Confined Circular-ribbon Flare -- Ting Li, Shuhong Yang, Qingmin Zhang, Yijun Hou & Jun Zhang Enhanced stellar activity for slow antisolar differential rotation? -- Axel Brandenburg, Mark S. Giampapa Quasi-periodic pulsations in the most powerful solar flare of Cycle 24 -- Dmitrii Kolotkov, Chloe Pugh, Anne-Marie Broomhall, and Valery Nakariakov GONG Catalog of Solar Filament Oscillations Near Solar Maximum -- Manuel Luna, Judith Karpen, Jose Luis Ballester, Karin Muglach, Jaume Terradas, Therese Kucera, Holly Gilbert 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 richard.canfield at montana.edu

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RHESSI's upcoming sixth anneal
by Shih, Albert Y. (GSFC-6710) 12 Apr '18

12 Apr '18

To RHESSI collaborators: RHESSI has been successfully operating in space for over 16 years now, and we will be rejuvenating the detectors once again through an "anneal" procedure. RHESSI’s germanium detectors degrade steadily over time due to radiation damage from charged particles, and heating up the germanium restores lost sensitivity and resolution. The detectors will be heated up from their operating temperature of ~155 K to ~85 deg C (~358 K), held at that temperature for two weeks, and then cooled back down. These detectors have been previously annealed five times, most recently in 2016. We plan to start the anneal today, and the entire procedure is estimated to take about two months. During this time period, RHESSI will be unable to make X-ray or gamma-ray observations. If you have any questions about this anneal, please feel free to contact me. Albert Shih RHESSI Deputy Mission Scientist ————— Albert Y. Shih Solar Physics Laboratory, Code 671 NASA Goddard Space Flight Center Greenbelt, MD 20771 Office: 301-286-1843

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Special issue - final reminder
by Eduard Kontar 12 Apr '18

12 Apr '18

Special Issue of Advances in Space Research: Solar Physics Advances from the Interior to the Heliosphere Manuscripts are solicited for Solar Physics Advances from the Interior to the Heliosphere, a special topical issue of Advances in Space Research (ASR). http://www.eps.org/blogpost/739454/291549/Special-Issue-of-Advances-in-Spac… Please note the deadline for manuscript submission: 30 April 2018 [University of Glasgow: The Times Scottish University of the Year 2018]

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FIRST SOLAR FLARE OF CYCLE 25!
by richard.canfield＠montana.edu 12 Apr '18

12 Apr '18

FIRST SOLAR FLARE OF CYCLE 25! ------------------------------ On Tuesday "Mr. SolarSoft", Sam Freeland, discovered and documented the first solar flare of Cycle 25: http://sdowww.lmsal.com/sdomedia/ssw/media/ssw/ssw_client/data/ssw_service_… According to Millennium Chief Observer Bill Marquette: The southern hemisphere region located at S31E07 on 4/9/17:30 UT had, for a brief time, a small reversed polarity C-type/beta sunspot group and Sam reported that tiny A2.5 event at 4/9/12:57 UT. So, the first noteworthy region of Cycle 25 complete with a beta sunspot group and the first tiny flare event of the new cycle. Bill also notes: I made it (lived long enough) to see the beginning of another solar cycle! This is the 5th one! I started at the University of Michigan's McMath-Hulbert Solar Observatory in 1967 during Solar Cycle 20. Like Cycle 24, this one may be starting with little overlap between low-latitude old-cycle regions and high- latitude new-cycle regions. Kudos, Sam and Bill!

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Max Millennium News
by richard.canfield＠montana.edu 11 Apr '18

11 Apr '18

MAX MILLENNIUM NEWS 11 April 2018 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 response during the precursor and the main phase of a B6.4 flare on August 20, 2005 -- Awasthi, Arun Kumar; Rudawy, Pawel; Falewicz, Robert; Berlicki, Arkadiusz; Liu, Rui Unambiguous Evidence of Coronal Implosions During Solar Eruptions and Flares -- Juntao Wang, P. J. A. Simoes, and L. Fletcher Two Types of Long-duration Quasi-static Evolution of Solar Filaments -- C. Xing, H. C. Li, B. Jiang, X. Cheng & M. D. Ding 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 richard.canfield at montana.edu

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Max Millennium News
by richard.canfield＠montana.edu 04 Apr '18

04 Apr '18

MAX MILLENNIUM NEWS 04 April 2018 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 Oscillations of cometary tails: a vortex shedding phenomenon? -- G. Nistico, V. Vladimirov, V. M. Nakariakov, K. Battams, V. Bothmer Observations of Running Penumbral Waves Emerging in a Sunspot -- T. G. Priya, Cao Wenda, Su Jiangtao, Chen Jie, Mao Xinjie, Deng Yuanyong and Erdelyi Robert Reconnection in the Post-Impulsive Phase of Solar Flares -- Terry G. Forbes, Daniel B. Seaton, Katharine K. Reeves Temperature of source regions of 3He-rich impulsive solar energetic particles events -- Chen, N.-H., R. Bucik, R.-S. Kim 3He-rich Solar Energetic Particles in Helical Jets on the Sun -- R. Bucik, D. E. Innes, G. M. Mason, M. E. Wiedenbeck, R. Gomez-Herrero, N. V. Nitta On the importance of the nonequilibrium ionization of Si IV and O IV and the line-of-sight in solar surges -- Nobrega-Siverio, D, Moreno-Insertis, F., Martinez-Sykora, J. Was the cosmic ray burst detected by the GRAPES-3 on 22 June 2015 caused by transient weakening of geomagnetic field or by an interplanetary anisotropy? -- P.K. Mohanty, K.P. Arunbabu, T. Aziz, S.R. Dugad, S.K. Gupta, B. Hariharan, P. Jagadeesan, A. Jain, S.D. Morris, P.K. Nayak, P.S. Rakshe, K. Ramesh, B.S. Rao, M. Zuberi, Y. Hayashi, S. Kawakami, P. Subramanian, S. Raha, S. Ahmad, A. Oshima, S. Shibata, H. Kojima 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 richard.canfield at montana.edu

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MMScience April 2018