Geometry of Coronal Mass Ejections. CMEs Geometry - Mishra, Rajesh Kumar; Agarwal, Rekha
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Scientific Study from the year 2024 in the subject Physics - Astronomy, , language: English, abstract: The most energetic phenomena in the heliosphere are known to be coronal mass ejections (CMEs), which acquire their energy from the Sun's strained magnetic fields. Coronal Mass Ejections disrupt the flow of the solar wind and produce disturbances that strike the Earth with sometimes catastrophic results. Coronal mass ejections are often associated with solar flares and prominence eruptions but they can also occur in the absence of either of these processes. The frequency of CMEs varies with…mehr

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Produktbeschreibung
Scientific Study from the year 2024 in the subject Physics - Astronomy, , language: English, abstract: The most energetic phenomena in the heliosphere are known to be coronal mass ejections (CMEs), which acquire their energy from the Sun's strained magnetic fields. Coronal Mass Ejections disrupt the flow of the solar wind and produce disturbances that strike the Earth with sometimes catastrophic results. Coronal mass ejections are often associated with solar flares and prominence eruptions but they can also occur in the absence of either of these processes. The frequency of CMEs varies with the sunspot cycle. At solar minimum we observe about one CME a week. Near solar maximum we observe an average of 2 to 3 CMEs per day. We have studied different characteristics of coronal mass ejection based on the observation form Large Angel and Spectrometric Coronagraph (LASCO) on board of the Solar and Heliospheric Observatory (SOHO) space craft during the period 1996 ¿2006. It is noteworthy that the rate of occurrence of Class B CMEs is more than class A CME¿s. The occurrence spectrum of both classes of CMEs follows the trend of the phase of solar cycle and maximum number both types CME¿s seems to be occurred during maximum solar activity. It is also observed that the maximum number of class A, Class B CMEs have speed range 0-500 km/sec. We have observed that maximum number of Class A, Class B CME¿s occurred in apparent angular width range 00-900. It is also found that the maximum number of class A and class B CME¿s have occurred when the position angle ranges in 50-1000 and 2500-3000 respectively.
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Autorenporträt
Dr. Rajesh Kumar Mishra, ICFRE-Tropical Forest Research Institute, Jabalpur (MP), India is an internationally acclaimed researcher in the field of astrophysics, cosmic rays, space science, electronics, computer science and forestry. He has a postgraduate degree in Physics and Mathematics. He has done his doctoral degree in space science. Dr. Mishra has more than 30 years experience in various branches of astrophysics, cosmic rays, space science, climate change, computer applications, web application, network application and database development, and forestry science. He has more than 450 research publications in International and Nations journals in his credit. He is a life member of Indian Physics Association and Plasma Space science of India and member of Division of Plasma Physics, Association of Asia Pacific Physical Societies (AAPPS-DPP). He is working as Assistant Editor for the online open access magazine "Van Sangyan" and Executive Board Member and Editorial Board Member for the journal Indian Journal of Tropical Biodiversity published by Society for Promotion of Tropical Biodiversity.