'Coronal hole' diaporamas de présentation

On the Cause of Solar Differential Rotation

On the Cause of Solar Differential Rotation. ?????????. Ling-Hsiao Lyu Institute of Space Science, National Central University ??? ???????????. 11-years Solar Cycle Based on Sunspot Number. 22-years Solar Cycle Based on Leading Sunspot Magnetic Polarity.

533 views • 43 slides

after Woch et al., 1997

700-800 km/s. 400 km/s. after Woch et al., 1997. Slow solar wind from an equatorial coronal hole. Slow solar wind from a polar coronal hole. Low-speed wind models. Helmet-streamer. Blob-loop reconnection Wang et al. (1999). Expanding active region Nakagawa & Uchida.

524 views • 35 slides

The Solar Dynamics Observatory:Waiting for a Launch Solar Cycle 24

The Solar Dynamics Observatory:Waiting for a Launch Solar Cycle 24. Aleya Van Doren W. Dean Pesnell Steele Hill NASA, Goddard Space Flight Center. Welcome (Van Doren) Welcome to Solar Cycle 24 (Pesnell) Solar Dynamics Observatory (Pesnell) STEREO and SoHO (Hill)

456 views • 31 slides

The Recent Solar Minimum: How Low Was It? What Were The Consequences?

The Recent Solar Minimum: How Low Was It? What Were The Consequences?. Rodney Viereck NOAA Space Weather Prediction Center With Contributions from Eduardo Araujo-Pradere , CU Stan Solomon, NCAR John Emmert , NRL Judith Lean, NRL Nicolas Bergeot , Royal Observatory, Belgium

389 views • 28 slides

N. A. Schwadron Southwest Research Institute Also, Boston University

Relating the Sub-Parker Spiral Structure of the Heliospheric Magnetic Field to the Dynamic Sources of Solar Wind. N. A. Schwadron Southwest Research Institute Also, Boston University. Is there a physical link between heliospheric field structure and solar wind sources?.

377 views • 25 slides

ORIGIN OF THE SLOW SOLAR WIND

ORIGIN OF THE SLOW SOLAR WIND. K. Fujiki ? T. Ohmi, M. Kojima, M. Tokumaru Solar-Terrestrial Environment Laboratory, Nagoya University and K. Hakamada Department of Engineering Physics, Chubu University. Slow solar wind from a small equatorial coronal hole.

399 views • 22 slides

Empirical Testing of Solar Coronal and Solar Wind Models

Empirical Testing of Solar Coronal and Solar Wind Models. Lauren Woolsey University of Maryland - College Park (2011) Mentor: Dr. Leonard Strachan. Introduction. What is the Solar Wind? * Outflow of particles discovered theoretically in 1958 and experimentally in 1962.

392 views • 22 slides

Long-term Solar Synoptic Measurements with Implications for the Solar Cycle

Long-term Solar Synoptic Measurements with Implications for the Solar Cycle. Leif Svalgaard Stanford University 23 April 2013. Dimensions of Synoptic Observations. Time Dimension (long-term data sets) Spatial Dimension (distribution over the disk of activity, synoptic maps, height, depth)

384 views • 21 slides

Feature Detecting: Solar Magnetic Tracking by SWAMIS

349 views • 21 slides

Another unknown issue of the SW is the origin of slow solar wind

Another unknown issue of the SW is the origin of slow solar wind. Low-speed wind models. Helmet-streamer. Blob-loop reconnection Wang et al. (1999). Expanding active region Nakagawa & Uchida. Helmet-streamer model. N. Magnetic neutral sheet. S.

364 views • 20 slides

SOLIS/VSM Coronal Hole Estimation Maps

309 views • 19 slides

Coronal Holes Not As Well Behaved As We Thought

284 views • 19 slides

SOLIS/VSM Coronal Hole Estimation Maps

322 views • 19 slides

Anemone Structure of AR NOAA 10798 and Related Geo-Effective Flares and CMEs

Anemone Structure of AR NOAA 10798 and Related Geo-Effective Flares and CMEs. A. Asai 1 ( ?? ? ), T.T. Ishii 2 , K. Shibata 2 , N. Gopalswamy 3 1: Nobeyama Solar Radio Observatory, NAOJ 2: Kyoto University 3: NASA/GSFC. COSPAR2006-A-02406; D2.1-0023-06

246 views • 17 slides

Source

Fast SW. Slow SW. above closed field/ open field. Source. open field. Coronal hole. Coronal hole. V. steady. variable. N. steady. variable. Na/Np. high. low. Relation between speed and coronal hole area. The speed of the solar wind scales with the coronal hole area.

344 views • 17 slides

The May 1997 and May 1998 MURI events

The May 1997 and May 1998 MURI events. George H. Fisher UC Berkeley. May 12 1997. Classic 2-ribbon flare occurring in NOAA AR 8038 at ~ 04:45 UT Halo CME seen ~ 1-2 hours later (partial) filament eruption Global solar magnetic configuration is quite simple

331 views • 16 slides

On the nature of EIT waves, EUV dimmings and their link to CMEs

248 views • 15 slides

Polar Coronal Hole Variations Over Solar Cycle 23

Polar Coronal Hole Variations Over Solar Cycle 23. Nishu Karna Mentor: Dr. William Dean Pesnell Code: 671 SESI Program-2010 Goddard Space Flight Center Date: August 4, 2010. Coronal Hole :-

260 views • 11 slides

Locating the solar source of 13 April 2006 Magnetic Cloud

183 views • 9 slides

Hinode Coordinated Observations: Plasma Composition

Hinode Coordinated Observations: Plasma Composition. Linking solar wind with source regions using plasma composition. EIS Composition Map. XRT. Photospheric composition ~ 1 in coronal hole (CH) - > fast wind. Coronal composition ~1.5-3 in active region (AR) - > slow wind.

179 views • 3 slides