Characteristics of coronal mass ejections in the near Sun interplanetary space
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional Autónoma de México
2004
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| _version_ | 1876491492787224576 |
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| author | Alejandro Lara |
| author_facet | Alejandro Lara |
| contents | Characteristics of coronal mass ejections in the near Sun interplanetary space Alejandro Lara Nat Gopalswamy J. Américo González Esparza Ciencias de la Tierra solar activity Coronal Mass Ejections Based on the observations from the Large Angle and Spectrometric Coronagraph (LASCO) on board the Solar and HeliosphericObservatory (SOHO) spacecraft we studied coronal mass ejections (CME) parameters between 6 and 10 solar radii from the Sun.We have developed a new method to obtain the duration, brightness enhancement (above the background) and speed of the leadingpart of the CMEs. These properties are important in order to understand the dynamics of the CMEs near the Sun and theirevolution in the interplanetary space using numerical models. We present the method of analysis and the results of the applicationof this method to a set of 9 halo CMEs observed during 1997. We found that i) the CME speeds obtained with this method are ingood agreement with measurements of other observers, ii) the average time duration of the CME leading part is 8 hrs. and iii) thebrightness maxima decrease with distance as a power law with a mean index of -3.6. 2004 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56843110 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.43 |
| format | Artículo científico |
| id | redalyc_56843110 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Characteristics of coronal mass ejections in the near Sun interplanetary space Alejandro Lara Ciencias de la Tierra solar activity Coronal Mass Ejections Characteristics of coronal mass ejections in the near Sun interplanetary space Alejandro Lara Nat Gopalswamy J. Américo González Esparza Ciencias de la Tierra solar activity Coronal Mass Ejections Based on the observations from the Large Angle and Spectrometric Coronagraph (LASCO) on board the Solar and HeliosphericObservatory (SOHO) spacecraft we studied coronal mass ejections (CME) parameters between 6 and 10 solar radii from the Sun.We have developed a new method to obtain the duration, brightness enhancement (above the background) and speed of the leadingpart of the CMEs. These properties are important in order to understand the dynamics of the CMEs near the Sun and theirevolution in the interplanetary space using numerical models. We present the method of analysis and the results of the applicationof this method to a set of 9 halo CMEs observed during 1997. We found that i) the CME speeds obtained with this method are ingood agreement with measurements of other observers, ii) the average time duration of the CME leading part is 8 hrs. and iii) thebrightness maxima decrease with distance as a power law with a mean index of -3.6. 2004 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56843110 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.43 |
| title | Characteristics of coronal mass ejections in the near Sun interplanetary space |
| topic | Ciencias de la Tierra solar activity Coronal Mass Ejections |
| url | https://www.redalyc.org/articulo.oa?id=56843110 |