MMScience December 2019

mmscience@solar.physics.montana.edu

4 participants
9 discussions

RHESSI Nuggets in December, 2019
by Hugh Hudson 31 Dec '19

31 Dec '19

Farewell to 2019! There were 25 new Nuggets in all during the year, thanks to as many contributors. The new ones in December were: No. 365, “Spectropolarimetric Insight into Plasma-Sheet Dynamics of a Solar Flare,” by Ryan French. The CoMP polarization patterns in SOL2017-09-10 are extremely promising. No. 366, “Cosmic Rays over the Rainbow Bridge,” by Hugh Hudson and Alec MacKinnon. Galactic (and solar) cosmic range plummet into the Sun. No. 367, “A Global Survey of EUV Coronal Power Spectra,” by Karl Battams. Time-series maps of imaged power spectra from an AIA pipeline. Please see http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets for access to the full list, with search capability. We publish these at roughly two-week intervals and welcome contributions, which should be related, at least loosely, to RHESSI science. At the time of writing another new-cycle region is on the disk, although it has lost its spots already. So… Happy New Year to all!

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Partial Solar Eclipse on 26/12/2019
by Divyadarshan Purohit 27 Dec '19

27 Dec '19

Dear Friends, Gurudev Observatory has observored Partial solar eclipse at Urmi School with two solar telescope,live projection,live streaming , solar spectecles. More than 3000 students & public with national Media took part.Media took the event lively throught the world from the place.10 groups of 50 students done 10 experiments .( I will share the results within a week). Here are some pictures on.... iloveimg-compressed (1).zip <https://drive.google.com/file/d/1zdWCUVaZJG_Wk3ymzdKuA8kM8g6x8Ath/view?usp=…> iloveimg-compressed (4).zip <https://drive.google.com/file/d/1ieScza2Q3V1ItfhXlyfEVwWyZ4nmMyJt/view?usp=…> (1) PSE pictures from gurudev observatory.(compressed zip folder) (2) More than 3000 students & people took part. [compressed (1) zip folder] It is on google drive https://drive.google.com/file/d/1zdWCUVaZJG_Wk3ymzdKuA8kM8g6x8Ath/view?usp=… (3) National Media helped to spread the words globally.[compressed (2) zip folder] (4) 10 scientific experiments were done to abolish superstitions. [compressed (3) zip folder] (5) National eminent Painter Mr.Jayant Parikh made historical live picture of PSE.No one in world has done this so far. [compressed (4) zip folder] It is on google drive. https://drive.google.com/file/d/1ieScza2Q3V1ItfhXlyfEVwWyZ4nmMyJt/view?usp=… *Time lapse movie of PSE made with 24 pictures .* https://youtu.be/0OUvNH2YT2w *Live PSE in Indian Media by observatory:* https://youtu.be/5XBJs7jDddg https://youtu.be/mLGUMJV4aaQ https://youtu.be/HZy2mfdEq5g https://youtu.be/YSNuqqM_VmY https://youtu.be/DIHkoRa8lns https://youtu.be/Kv2cemVydVM https://youtu.be/MaSA-pLpSEI https://youtu.be/_3HiX-4ASag https://youtu.be/O3H5DkSq-H4 https://youtu.be/ljV2u6zU6bg https://youtu.be/taBYaGYwaUY https://youtu.be/-ot9eHqzExA https://youtu.be/tXYVMgeITvQ Hope you will enjoy all these. with best regards, Divyadarshan D.Purohit Gurudev Observatory, Vadodara India http://www.gurudevobservatory.co.in/ [image: flickr] <https://www.flickr.com/photos/gurudevobservatory/sets/> [image: twitter] <https://twitter.com/ddpurohit/> [image: facebook] <https://www.facebook.com/divyadarshan.purohit/> [image: youtube] <https://www.youtube.com/c/DivyadarshanPurohit> [image: googleplus] <https://plus.google.com/+DivyadarshanPurohit> [image: blogspot] <http://vayamrastrejagruyampurohita.blogspot.in/> [image: tumblr] <http://www.gurudevobservatory.tumblr.com/> [image: instagram] <https://www.instagram.com/divyadarshan.purohit/>

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Max Millennium News
by Keiji YOSHIMURA 25 Dec '19

25 Dec '19

MAX MILLENNIUM NEWS 25 December 2019 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 Remote coronal dimmings related to a circular-ribbon flare -- Q. M. Zhang and R. S. Zheng Formation and Eruption of a Mini-sigmoid Originating in Coronal Hole -- Z. W. Huang, X. Cheng, Y. N. Su, T. Liu, M. D. Ding Quantifying the Toroidal Flux of Pre-existing Flux Ropes of CMEs -- C. Xing, X. Cheng, Jiong Qiu, Qiang Hu, E. R. Priest, M. D. Ding A Magnetohydrodynamic Relaxation Method for Non-Force-Free Magnetic Field in Magnetohydrostatic Equilibrium -- Takahiro Miyoshi, Kanya Kusano, Satoshi Inoue Re-analysis of Lepping's Fitting Method for Magnetic Clouds: Lundquist Fit Reloaded -- P. Demoulin, S. Dasso, M. Janvier, V. Lanabere 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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PSE live telecast link from Gurudev Observatory,India
by Divyadarshan Purohit 20 Dec '19

20 Dec '19

Dear Friends, We are going to organised a grand event for upcoming solar eclipse on 26/12/2019 from Gurudev Observatory. Live viewing,Screening,Projection,Live lectures & 10 experiments will be part of the events.We are expecting thousands of students,people & media persons during the events. Here are two links where you can see the live telecast of (1) PSE & (2) 10 experiments would be carried out during eclipse by observatory.Kindly note that Live telecast will start at 8:00 AM IST on 26/12/2019 & Thursday. IST is 5:30 hrs ahead of UT . Live telecast link for Facebook.... https://www.facebook.com/BRGGroupBRGNews/ Live telecast link for You Tube..... https://www.youtube.com/channel/UCwzQGAP4Vw64UisbFys_wQw?view_as=subscriber You are most welcome to join the event digitally & send your suggestions,messages for the events so we can include the same in telecast. with best regards, Divyadarshan D.Purohit Gurudev Observatory, Vadodara India http://www.gurudevobservatory.co.in/ [image: flickr] <https://www.flickr.com/photos/gurudevobservatory/sets/> [image: twitter] <https://twitter.com/ddpurohit/> [image: facebook] <https://www.facebook.com/divyadarshan.purohit/> [image: youtube] <https://www.youtube.com/c/DivyadarshanPurohit> [image: googleplus] <https://plus.google.com/+DivyadarshanPurohit> [image: blogspot] <http://vayamrastrejagruyampurohita.blogspot.in/> [image: tumblr] <http://www.gurudevobservatory.tumblr.com/> [image: instagram] <https://www.instagram.com/divyadarshan.purohit/>

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Max Millennium News
by Keiji YOSHIMURA 18 Dec '19

18 Dec '19

MAX MILLENNIUM NEWS 18 December 2019 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 Excitation of decay-less transverse oscillations of coronal loops by random motions -- A.N. Afanasyev, T. Van Doorsselaere, V.M. Nakariakov Peculiar solar sources and geospace disturbances on 20-26 August 2018 -- A.A. Abunin, M.A. Abunina, A.V. Belov, I.M. Chertok Observations of solar chromospheric oscillations at 3 mm with ALMA -- S. Patsourakos, C. A. Alissandrakis, A. Nindos, T. S. Bastian 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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SDO 2020 Science Workshop: A Decade of Discovery
by Ryan Milligan 17 Dec '19

17 Dec '19

The Solar Dynamics Observatory (SDO) invites you to the SDO 2020 Science Workshop: A Decade of Discovery, to be held October 12-16, 2020, at the Hyatt Regency in Vancouver, BC, Canada. All members of the science community are welcome and encouraged to attend. The ten years since the launch of SDO has seen many papers in wide ranges of science results from this mission. As Solar Cycle 25 begins its rise to maximum, we will get together to discuss what we learned about the Sun and anticipate what the new cycle will look like. Invited speakers will introduce 8 themed sessions spanning SDO‘s wide range of research topics: Subsurface Flows, the Dynamo, and the Solar Cycle Phun with Photons: Response of atmospheres to EUV variability Short-term Solar Variability Magnetic Flux in the SDO Era: From Emergence to Eruption SDO for Space Weather: Science and Applications The SDO Corona and Beyond Energy and Mass Transfer Between the Corona and the Chromosphere Vector Magnetic Field: Progress and Prospects There will also be one day of parallel mini-workshops and an EUV calibration workshop. Registration, abstract submission, and other information about SDO 2020 will be made available at http://sdo2020.lws-sdo-workshops.org/. The Hyatt Regency can be explored at https://www.hyatt.com/en-US/hotel/canada/hyatt-regency-vancouver/yvrrv Ryan Milligan On behalf of the SDO 2020 Science Organizing Committee

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Announcing two new RHESSI Science Nuggets
by Hugh Hudson 16 Dec '19

16 Dec '19

No. 365, “Spectropolarimetric Insight into Plasma-Sheet Dynamics of a Solar Flare,” by Ryan French. CoMP polarization patterns in SOL2017-09-10 are amazing. No. 364, “Lorentz Force Evolution Reveals the Energy Build-up Processes during Recurrent Eruptive Solar Flares,” by Ranadeep Sarkar, Nandita Srivastava, and Astrid Veronig. 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 be found by searching for their SOLyyyy-mm-dd identifier from this home page.

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Max Millennium News
by Keiji YOSHIMURA 11 Dec '19

11 Dec '19

MAX MILLENNIUM NEWS 11 December 2019 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 Observations and 3D MHD Modeling of a Confined Helical Jet Launched by a Filament Eruption -- Lauren Doyle, Peter F. Wyper, Eamon Scullion, James A. McLaughlin, Gavin Ramsay & J. Gerrard Doyle 3D numerical simulations of oscillations in solar prominences -- A. Adrover-Gonzalez, J. Terradas Spectral magnetic helicity of solar active regions between 2006 and 2017 -- Gosain, S., Brandenburg, A. 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 04 Dec '19

04 Dec '19

MAX MILLENNIUM NEWS 4 December 2019 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 The Effect of Anisotropic Viscosity on the Nonlinear Kink Instability -- Quinn, J., MacTaggart, D., Simitev, R. Solar Cycle Variation of Coronal Temperature, Emission Measure, and Soft X-ray Irradiance Observed with Yohkoh Soft X-ray Telescope -- Aki Takeda, Loren Acton, and Nicole Albanese Magnetic Rayleigh-Taylor Instability at a Contact Discontinuity With Oblique Magnetic Field -- E. Vickers, I. Ballai, R. Erdelyi Spectropolarimetric Insight into Plasma-Sheet Dynamics of a Solar Flare -- Ryan J. French, Philip G. Judge, Sarah A. Matthews, Lidia van Driel-Gesztelyi IRIS Mg II Observations and Non-LTE Modeling of Off-limb Spicules in a Solar Polar Coronal Hole -- Akiko Tei, Stanislav Gunar, Petr Heinzel, Takenori J. Okamoto, Jiri Stepan, Sonja Jejcic, Kazunari Shibata 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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MMScience December 2019