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Réunion IAP 21 Décembre 2006

Réunion IAP 21 Décembre 2006. Radio emissions from the corona and inner heliosphere. JLB / 2002.04.24 / ST-21 / EGS-Nice - 2 -. Coronal Mass Ejections. Fast and narrow CMES associated with short duration emissions (electron beams, typeIII). Fast and large CMEs associated with

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Réunion IAP 21 Décembre 2006

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  1. Réunion IAP 21 Décembre 2006

  2. Radio emissions from the corona and inner heliosphere JLB / 2002.04.24 / ST-21 / EGS-Nice- 2 -

  3. Coronal Mass Ejections Fast and narrow CMES associated with short duration emissions (electron beams, typeIII). Fast and large CMEs associated with complex radio emissions at meter wavelengths lasting >> 10 minutes. Also associated with flares Radio detects these events above the solar limb and on-disk

  4. Flare/CME events • Radio complex events over a large frequency range Similarity 1MHz and 1-3 GHz Reiner et al. (2001,02) • Long duration >20 min • Origin in low corona

  5. 13-15 May 2005

  6. Halo CME May 02 1998: Disk observations Pohjolainen et al., 2001

  7. CME proxies On-disk and limb CMEs • Fast progression in latitude • Full extend: < 10 min • Successive loop interactions • Super-alfvenic disturbance W E N S • Angular extend • Speed (3000km/s) Duration (lateral spread) Indication on V

  8. CME and Complex radio events • 26 complex radio events 20 events associated with shocks (type II-like features) • 26 associated with CMEs (also Cane, 2002); 17 halo CMEs; 7 Width> 100°. (reach Earth) • *Emitting radio sources (NRH meter λ) complexand spread over a large volume; onset of new sources • * Coronal processes, involving multiple B system participate in the eruption. Maia and Pick, ApJ, 609, 1082 2004 Pick et al, AdSR 35 1976 2005

  9. CME and Complex radio events(From our web site, Nançay observing time) • Janvier-Juillet 2006 20 CMEs • 18 associés avec TYPE III (Waves)-16 complex • 2 partiellement occultés • 2 rien 05 Janvier 15:30; 30 mai 15:30 • Projet origine solaire ICMEs (à terre) et vent rapide --ICMEs (à terre) Magnetic clouds, flux rope, Ejecta (R, θ, φ) • Analyse solaire

  10. A new web site for radio monitoringA. Bouteille, R. RomagnanM. Pick, M. Maksimovic, J. L. Bougeret, A. Lecacheux,(LESIA)C. Alissandrakis, X. Moussas , A. Hillaris (Greece)A. Vourlidas, R. Howard (NRL) CMEs (V, W, PA) Goal: one radio spectrum in combining data from different spectrographs (large freq. Range) -Nançay Radioheliograph (metric λ) -NRH real time - LASCO CME and SECCHI CME summary (in near future) -SWAVES near future -NRH imaging link with the SWB http://secchirh.obspm.fr/

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