- Conference date: 19–23 March 2012
- Location: Palm Springs, CA, USA
We present results from a study of the CME event that occurred in May 1997 using a data-driven three-dimensional (3-D), time-dependent, magnetohydrogynamic (MHD) numerical simulation model . We focus on the initiation and evolution of the coronal mass ejection (CME) and its driven shock in the corona. The model takes the line-of-sight magnetic field at the photosphere as input to build the background corona and solar wind. A pressure pulse is applied to the simulation domain at the observed flare site to initiate a CME. A wave tracing method  is used to determine and trace the shock. It is found that the CME-driven shock starts forming at ∼1.5 solar radii (Rs) from the center of the Sun. The strength of the shock (Mach no. of fast shock) is found to increase with increasing heights (between 1.5 and 3.2 Rs). The increase in the shock strength is due to a decrease in the fast wave speed. In contrast, the density compression ratio of the shock is found to decrease as the shock propagates away from the Sun.
- Solar coronal mass ejection
- Solar corona
- Mach numbers
- Magnetic fields
Daniel Baumann, Mark G. Jackson, Peter Adshead, Alexandre Amblard, Amjad Ashoorioon, Nicola Bartolo, Rachel Bean, Maria Beltrán, Francesco de Bernardis, Simeon Bird, Xingang Chen, Daniel J. H. Chung, Loris Colombo, Asantha Cooray, Paolo Creminelli, Scott Dodelson, Joanna Dunkley, Cora Dvorkin, Richard Easther, Fabio Finelli, Raphael Flauger, Mark P. Hertzberg, Katherine Jones‐Smith, Shamit Kachru, Kenji Kadota, Justin Khoury, William H. Kinney, Eiichiro Komatsu, Lawrence M. Krauss, Julien Lesgourgues, Andrew Liddle, Michele Liguori, Eugene Lim, Andrei Linde, Sabino Matarrese, Harsh Mathur, Liam McAllister, Alessandro Melchiorri, Alberto Nicolis, Luca Pagano, Hiranya V. Peiris, Marco Peloso, Levon Pogosian, Elena Pierpaoli, Antonio Riotto, Uroš Seljak, Leonardo Senatore, Sarah Shandera, Eva Silverstein, Tristan Smith, Pascal Vaudrevange, Licia Verde, Ben Wandelt, David Wands, Scott Watson, Mark Wyman, Amit Yadav, Wessel Valkenburg and Matias Zaldarriaga
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