PPT-What do we Know of Solar Flares?

Hugh Hudson SSL UC Berkeley and U Of Glasgow 1 The Sun and its coronawind Solar flares and CMEs Extreme events new facts Nanoflares The Sun itself 2 It is not obvious from this sketch but the very thin . Louise Harra. lkh. @mssl.ucl.ac.uk. UCL Department of Space and Climate Physics. Mullard Space Science Laboratory. Extended solar minimum. Hinode X-ray corona. 2007 Oct. – 2009 Apr.. The solar wind is weaker… . RHESSI: a . statistical study. Jianxia. Cheng. . Jiong. . Qiu. , . Mingde. Ding, and . Haimin. Wang. outline. Introduction. Observations and data analysis. Properties of HXR spikes. summary. 1.Introduction. Ryan Payne. Advisor:. Dana . Longcope. Solar Flares. General. Solar flares are violent releases of matter and energy within active regions on the Sun.. Flares are identified by a sudden brightening in chromospheric and coronal emissions.. The Sun and the Stars. The Sun and the Stars. Limb darkening. The surface of the sun does not have uniform brightness, it appears bright toward the centre, darker towards the edges, and the colour is redder, an effect known as Limb darkening - why?. Solar Prominence. Sun Fact Sheet. The Sun is a normal G2 star, one of more than 100 billion stars in our galaxy.. . Diameter: . 1,390,000 km. (Earth 12,742 km or nearly 100 times smaller). Mass: . 1.1989 x 10. Individual . AR example: 8910. The only selection criterion imposed in this study is that the AR must be within 30 degrees of disk center. to minimize projection errors. See right for description of . detecting . flares, dimmings, and EUV waves . in near real-time on SDO/AIA images. Emil Kraaikamp. . (p), Cis Verbeeck – Royal Observatory of Belgium. 12. th. European Space Weather Week, Oostende, Belgium . M. Dominique. and I. . Dammasch. ESWW9, Brussels 2012. PROBA2: an ESA . microsat. L. aunched on November 9, 2009. 17 technology demonstrators + 4 scientific instruments. LYRA first light on January 6, 2010. SDO jEVE The EUV Variability Experiment EVE onboard the Solar Dynamics Observatory SDO has been obtaining unprecedented observations of solar variation on times scales of seconds during flares and ove Alexander Kosovichev (NJIT, U.S.A.) and Ivan Sharykin (IKI, Russia). Helioseismic response to solar flares . ("sunquakes") occurs due to localized force or/and momentum impacts observed during the flare impulsive phase in the lower atmosphere. . lognormal instead of power law?. Solar-Terrestrial Centre of Excellence. Cis . Verbeeck. , Emil . Kraaikamp. , Lena . Podladchikova. Royal Observatory of Belgium. SDO Workshop, Ghent, Belgium. , October 29, . M. . Prijatelj. Carnegie Mellon University. Advisors: B. Chen, P. . Jibben. (SAO). Overview. Motivations. Standard Flare Model. Flux rope eruption. Magnetic reconnection. Flare emissions. Type III Radio Bursts. flares. in 2002. . B. Schmieder. 1;2. , R.-S. Kim. 2. , B. Grison. 3. , K. Bocchialini. 4. , R.-Y. Kwon. 2. . Key Points. :. . Analysis. . of the . chain. of . events. . (. flare. , CME, L1, SEP. Exoplanets. Kazunari. Shibata. . Kwasan. and . Hida. observatories, . Kyoto University. Hiroaki Isobe. Unit of Synergetic Studies for Space, Kyoto University. isobe@kwasan.kyoto. -. u.ac.jp. COSPAR2014, .