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Relation between solar flares and halo coronal mass ejections

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dc.contributor.author Koteswara Rao, V
dc.contributor.author Rama Gopal, K
dc.contributor.author Ramakrishna Reddy, R
dc.contributor.author Amareswari, K
dc.contributor.author Sankarasubramanian, K
dc.date.accessioned 2020-11-10T13:52:49Z
dc.date.available 2020-11-10T13:52:49Z
dc.date.issued 2019-02
dc.identifier.citation Journal of Astrophysics and Astronomy, Vol. 40, No. 1, 1 en_US
dc.identifier.issn 0250-6335
dc.identifier.uri http://prints.iiap.res.in/handle/2248/6804
dc.description Open Access © Indian Academy of Sciences https://doi.org/10.1007/s12036-018-9570-1 en_US
dc.description.abstract Solar flares and coronal mass ejections (CMEs) are two very important active events from Sun. Inspite of several theoretical and statistical analyses, the relation between solar flares and CMEs is so far not well established, and strong opinions and arguments still continue. Statistical approaches use a lot of data available from many measurements by space and ground instruments. They try to map the measured parameters of one event to that of another event and try to establish the relation between them. Halo CMEs are a kind of special CMEs in the sense that they are directed towards Earth and hence can influence Earth’s atmosphere. For a scientist interested in Sun–Earth interactions and the effect on Earth’s atmosphere, study of Halo CMEs is extremely important. In this paper the relation between solar flares and Halo CMEs is studied. The data sets used are for the period from October 2006 to March 2017. For the first time, the Halo CMEs are categorized into four different groups based on the relative time of occurrence with respect to the flares and the relation between the flare and Halo CME parameters is studied. It is shown that: (a) there is a good correlation between certain flare parameters (like flare flux and peak intensity) and CME parameters (like kinetic energy, linear speed, and mass) especially when the Halo CME occurs during the flare; (b) For the same set of CMEs, the correlation is poor with flare duration; and (c) For CMEs before or after the flare, the correlation is lesser than the CMEs occurring during the flare. en_US
dc.language.iso en en_US
dc.publisher Indian Academy of Sciences en_US
dc.subject Solar flares en_US
dc.subject Coronal mass ejections en_US
dc.subject Halo CMEs en_US
dc.title Relation between solar flares and halo coronal mass ejections en_US
dc.type Article en_US


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