Eyecciones coronales de masa solar a una unidad astronómica

This research concludes that statistically Coronal Mass Ejections sun (CME for its acronym in English), are large eruptions of solar coronal magnetic fields and plasma (considered the fourth state of matter) that reach the Earth’s orbit, with special features to speed in this specific case study, become Geomagnetic Storms, whether high or low speed. To develop these research data coronal mass ejections of solar, with defined properties were studied; speed, mass, and different types of energy from 1990 to 2012, which could become geomagnetic storms. Research is focused on speed events with a range of greater than or equal to 0.5 days and less than or equal to one days time to calculate the time of arrival to Earth in days, using the average distance between Earth and the sun. From data CME speeds; results have as few fluctuations of the magnetic field, ie few geomagnetic storms; but k indexes values were observed from 0 to 9. In general making a comparative analysis of the results of the characterization of CMEs with solar activity, it was observed that the peak cycles were atypical, concluding that actually the minimum cycles they have long, downward trend in solar activity is highlighted and as a result there are decreasing trend in the occurrence of coronal mass ejections are the main cause of geomagnetic storms. Revista Ciencias Espaciales, Vol.7(1) 2014, 21-34