La couronne solaire et son activité peuvent perturber l'environnement spatial de la Terre. Les éjections coronales de masse (CME) sont des instabilités à grande échelle qui conduisent à l'éjection dans l'espace interplanétaire du plasma et du champ magnétique qui le confine. D'autres perturbations viennent des particules solaires de haute énergie (SEP). Elles sont accélérées au cours de la variation explosive du champ magnétique ou par l'onde de choc qu'engendre une CME rapide. Dans cet article, on illustre comment des observations du Soleil entier en micro-ondes peuvent conduire (1) à estimer la vitesse d'une CME et son temps d'arrivée à la Terre, (2) à la prévision des événements solaires à particules qui atteignent la Terre.
The solar corona and its activity induce disturbances that may affect the space environment of the Earth. Noticeable disturbances come from coronal mass ejections (CMEs), which are large-scale ejections of plasma and magnetic fields from the solar corona, and solar energetic particles (SEPs). These particles are accelerated during the explosive variation of the coronal magnetic field or at the shock wave driven by a fast CME. In this contribution, it is illustrated how full Sun microwave observations can lead to (1) an estimate of CME speeds and of the arrival time of the CME at the Earth, (2) the prediction of SEP events attaining the Earth.
Mot clés : Soleil : émission de particules, Soleil : émissions radio, Soleil : éjection coronale de masse, Relations Soleil-Terre
Karl-Ludwig Klein 1, 2, 3, 4 ; Carolina Salas Matamoros 1, 2, 5 ; Pietro Zucca 1, 2, 6
@article{CRPHYS_2018__19_1-2_36_0, author = {Karl-Ludwig Klein and Carolina Salas Matamoros and Pietro Zucca}, title = {Solar radio bursts as a tool for space weather forecasting}, journal = {Comptes Rendus. Physique}, pages = {36--42}, publisher = {Elsevier}, volume = {19}, number = {1-2}, year = {2018}, doi = {10.1016/j.crhy.2018.01.005}, language = {en}, }
TY - JOUR AU - Karl-Ludwig Klein AU - Carolina Salas Matamoros AU - Pietro Zucca TI - Solar radio bursts as a tool for space weather forecasting JO - Comptes Rendus. Physique PY - 2018 SP - 36 EP - 42 VL - 19 IS - 1-2 PB - Elsevier DO - 10.1016/j.crhy.2018.01.005 LA - en ID - CRPHYS_2018__19_1-2_36_0 ER -
Karl-Ludwig Klein; Carolina Salas Matamoros; Pietro Zucca. Solar radio bursts as a tool for space weather forecasting. Comptes Rendus. Physique, Volume 19 (2018) no. 1-2, pp. 36-42. doi : 10.1016/j.crhy.2018.01.005. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2018.01.005/
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