Solar Seminar (Zasshikai) Home Page (FY2021)


Solar Seminar (13:30-15:00 Monday, Room 504 5th floor building 4) Access

Next presenters

Date Time Section Speaker File
6-21 13:30-14:00
short
K. Kihara upload or download
6-21 14:00-15:00
main
H. Isobe upload or download

Please upload your presentation file!!

Date Section Speaker File
4-19
long
A. Asai upload or download
4-26
main
S. UeNo upload or download
5-10
main
S. Nagata upload or download
5-24
main
Y.A. Yamashiki upload or download
6-7
M2 report
D. Inoue upload or download
6-7
M2 report
H. Shirato upload or download
6-14
short
Y. Kotani upload or download
6-14
main
C.P. Denis upload or download

For Speakers
Presentation time for speaker is
main : 40 minutes as a guide, and 20 minutes discussion.
short : 20 minutes as a guide, and 10 minutes discussion.
Contents of talk are
main : about your study
short : review of recent interesting paper and share information of recent study of the Sun.
Language of slide and talks
Master cource students : Language of slide and talk could be Japanese
Doctor cource students and over : Slide must be English, and talking language could be Japanese
(If those who could not understand Japanese attend the seminar, it is preferable that you talk in English)
Title and Abstract
Please send the title and abstract of your presentation by the day before.
Presentation files
Please upload your presentation files by the start of the seminar.
If the presentation file has very large volume, please zip the file before uploading.
If you do not want to make public your unpublished results, please delete the relevant part before submission.
For Audiences
Honoring speakers
Plase clap your hands as a closure of a presentation to express your respection to a speaker.
For everyone
Publication sharing
Please send a copy of the submitted version of any paper on which they are working to the zasshikai mailing list just after submission
  • Useful webpage list for solar observers.
  • See also Ishii-san's Webpage and Webpage of Astronomical Observatory.

  • Main speakers
    Ichimoto, Yokoyama, Asai, Ueno, Nagata, Ishii, Nishida, Denis, Isobe,
    Kawamura, Kou, Kihara, Kotani, Yamasaki
    Inoue, Shirato, Otsu, Kida, Hashimoto, and Matsuda

    Short speakers
    Ichimoto, Yokoyama, Asai, Ueno, Nagata, Ishii, Nishida, Denis, Isobe,
    Kawamura, Kou, Kihara, Kotani, Yamasaki
    Inoue, Shirato, Otsu, Kida, Hashimoto, and Matsuda

    Presentations in 2021-1st semester (13:30-15:00)

    Date Name Title Abstract File
    04-12
    long
    K. Ichimoto Solar Projects in 2021
    pdf

    10 MB
    04-19
    long
    A. Asai

    MB
    04-26
    main
    S. UeNo

    MB
    05-10
    main
    S. Nagata

    MB
    05-17
    main
    K. Nishida Magnetic reconnection and plasmoid ejections in solar flare In today's solar seminar, I will introduce my papers on MHD simulation of solar flares. "Numerical examination of plasmoid-induced reconnection model for solar flares: the relation between plasmoid velocity and reconnection rate" Nishida et al., ApJ 690:748 (2009) "The role of a flux rope ejection in a three-dimensional magnetohydrodynamic simulation of a solar flare" Nishida, Nishizuka, Shibata, ApJL, 775:L39 (2013) "What factors determine durations of solar flares?" Nishida, Nishizuka, Shibata (in prep)
    pdf

    27 MB
    05-24
    main
    Y.A. Yamashiki

    MB
    05-31
    short
    D. Yamasaki An MHD Modeling of Successive X2.2 and X9.3 Solar Flares of 2017 September 6 Solar active region 12673 produced two successive X-class flares (X2.2 and X9.3) approximately 3 hours apart in September 2017. The X9.3 was the recorded largest solar flare in Solar Cycle 24. In this study we perform a data-constrained magnetohydrodynamic simulation taking into account the observed photospheric magnetic field to reveal the initiation and dynamics of the X2.2 and X9.3 flares. According to our simulation, the X2.2 flare is first triggered by magnetic reconnection at a local site where at the photosphere the negative polarity intrudes into the opposite-polarity region. This magnetic reconnection expels the innermost field lines upward beneath which the magnetic flux rope is formed through continuous reconnection with external twisted field lines. Continuous magnetic reconnection after the X2.2 flare enhances the magnetic flux rope, which is lifted up and eventually erupts via the torus instability. This gives rise to the X9.3 flare. link: https://arxiv.org/pdf/2104.06639.pdf
    pdf

    4.1 MB
    main
    T.T. Ishii Introduction of SMART (Solar Magnetic Activity Research Telescope) / SDDI (Solar Dynamics Doppler Imager) Event Report and Websites for Observers Tommorow, I would like to introduce SMART/SDDI event report and web sites for observers. Recent events 2021-Apr-20(JST) M-class flare at NOAA 12816. 2021-May-06(JST) Large eruption from east limb. 2021-May-23 & 24 Small flares and ejections at NOAA 12824 https://www.kwasan.kyoto-u.ac.jp/topics/kako.html https://www.hida.kyoto-u.ac.jp/SMART/SDDI/event_report/ For checking movies, I think it is better to access the web site by your self rather than to share screen on webex.
    pptx

    19 MB
    06-07
    M2 interm report
    D. Inoue 太陽ジェット現象におけるFIP効果の研究

    MB
    M2 interm report
    H. Shirato SMART/SDDIによる太陽大気における波動の伝播と磁場との関係の観測的研究

    MB
    06-14
    short
    Y. Kotani Extreme UV quiet Sun brightenings observed by Solar Orbiter/EUI In tomorrow's short talk, I'll introduce the following letter about campfires observed by Solar Orbiter. "Extreme UV quiet Sun brightenings observed by Solar Orbiter/EUI" (Berghmans et al. 2021) https://ui.adsabs.harvard.edu/abs/2021arXiv210403382B/abstract

    MB
    main
    C.P. Denis A fast-filament eruption observed in the H-alpha line: Imaging spectroscopy diagnostic and numerical modeling In this talk I will briefly summarize the observational aspects of the eruption detected by SMART/SDDI on 2017 April 23, and the application of a numerical model to interpret the observational results.

    MB
    06-21
    short
    K. Kihara

    MB
    main
    H. Isobe

    MB
    06-28
    long
    T. Yokoyama

    MB
    07-05
    short
    D. Inoue

    MB
    main
    Y.W. Huang

    MB
    07-12
    short
    H. Shirato

    MB
    main
    A.D. Kawamura

    MB

    Presentations in 2021-2nd semester (13:30-15:00)

    Date Name Title Abstract File
    10-04
    short
    S. UeNo

    MB
    main
    D. Inoue

    MB
    10-11
    short
    S. Nagata

    MB
    main
    H. Shirato

    MB
    10-18
    short
    T.T. Ishii

    MB
    main
    T. Otsu

    MB
    10-25
    short
    K. Nishida

    MB
    main
    Y. Kida

    MB
    11-01
    short
    C.P. Denis

    MB
    main
    Y. Hashimoto

    MB
    11-08
    short
    H. Isobe

    MB
    main
    Y. Matsuda

    MB
    11-15
    short
    Y.W. Huang

    MB
    main
    TBD

    MB
    11-22
    short
    A.D. Kawamura

    MB
    main
    TBD

    MB
    11-29
    D2 interm report
    K. Kihara

    MB
    D2 interm report
    Y. Kotani

    MB
    D2 interm report
    D. Yamasaki

    MB
    12-06
    short
    TBD

    MB
    main
    TBD

    MB
    12-13
    short
    TBD

    MB
    main
    TBD

    MB
    12-20
    short
    TBD

    MB
    main
    TBD

    MB
    01-17
    short
    TBD

    MB
    main
    TBD

    MB
    01-24
    M.T. practice
    D. Inoue

    MB
    M.T. practice
    H. Shirato

    MB



    Previous presentations

    2020 Zasshikai Website
    Go to Zasshikai 2020
    2019 Zasshikai Website
    Go to Zasshikai 2019
    2018 Zasshikai Website
    Go to Zasshikai 2018
    2017-2nd Zasshikai Website
    Go to Zasshikai 2017-2nd
    2017-1st Zasshikai Website
    Go to Zasshikai 2017-1st
    2016 Zasshikai Website
    Go to Zasshikai 2016
    2015 Zasshikai Website
    Go to Zasshikai 2015
    All of 2014
    2014 Archive (tar.gz file, 1.9Gbyte)
    All of 2013
    2013 Archive (tar.gz file, 2.4Gbyte)
    All of 2012
    2012 Archive (tar.gz file, 780Mbyte)
    All of 2011
    2011 Archive (tar.gz file, 780Mbyte)
    All of 2010
    2010 Archive (tar.gz file, 625Mbyte)



    If there are any mistakes or errors in this webpage,
    please send an e-mail to the organizer, D.Yamasaki (dyamasaki_at_kusastro.kyoto-u.ac.jp).