| Name | Nat Gopalswamy |
| Affiliation | NASA Goddard Space Flight Center, USA |
| Title | Flares, CMEs and Space Weather |
| Authors | Nat Gopalswamy |
| Abstract | Coronal mass ejections (CMEs) and flares from the Sun are important sources of space weather. Solar flares cause sudden change in the ionization level in the ionosphere. CMEs accelerate particles to high energies observed as solar energetic particle (SEP) events and cause geomagnetic storms owing to the southward field in the CME and/or in the shock sheath. While flares and CMEs have different space weather consequences, their origin at the Sun are closely related through the magnetic reconnection process in the source active region. In fact, the flare reconnection flux has turned out to be an important quantity that has important implications for characterizing the magnetic properties of CMEs (e.g., the flux rope structure). In this talk, I highlight some recent developments in our understanding of solar eruptions. |
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