caa a22 4500 445346620 CHVBK 20180317142830.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s11207-011-9707-8 doi (NATIONALLICENCE)springer-10.1007/s11207-011-9707-8 Longitudinal Distribution of Solar Flares and Their Association with Coronal Mass Ejections and Forbush Decreases [Elektronische Daten] [Pankaj Shrivastava, Mukesh Jothe, Mahendra Singh] Major Hα solar-flare events of high optical importance have been employed to study their heliographic distribution in longitude around the Sun for the period of 2001 to 2006. Astatistical analysis was performed to obtain their relationship with halo/partial-halo CMEs and Forbush decreases (Fds) of cosmic-ray intensity. Our analysis indicates that 63% of the solar flares associated with halo CMEs and Fds occur in the western hemisphere and of 37% of such flares occur in the eastern hemisphere. Similarly, we found that nearly 60% of the solar flares associated with partial- halo CMEs and Fds occur in the western hemisphere and the rest (40%) occur in the eastern hemisphere. Finally, we conclude that the flares in association with CMEs and located in the western hemisphere of the solar disk are more effective in producing Fds. The magnitudes of Fds are observed to be higher when in association of halo CMEs. Aslight excess in the eastern hemisphere is found for both the halo and partial-halo CMEs. Springer Science+Business Media B.V., 2011 Cosmic rays nationallicence Neutron monitors nationallicence Solar flares nationallicence Shrivastava Pankaj Department of Physics, Govt. P.G. Science College, 486001, Rewa, MP, India aut Jothe Mukesh Department of Physics, Govt. M.G.M. P.G. College, 461111, Itarsi, MP, India aut Singh Mahendra Department of Physics, Govt. M.V.M., Bhopal, MP, India aut Solar Physics Springer Netherlands 269/2(2011-04-01), 401-410 0038-0938 269:2<401 2011 269 11207 https://doi.org/10.1007/s11207-011-9707-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-011-9707-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shrivastava Pankaj Department of Physics, Govt. P.G. Science College, 486001, Rewa, MP, India aut NATIONALLICENCE 700 1- Jothe Mukesh Department of Physics, Govt. M.G.M. P.G. College, 461111, Itarsi, MP, India aut NATIONALLICENCE 700 1- Singh Mahendra Department of Physics, Govt. M.V.M., Bhopal, MP, India aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 269/2(2011-04-01), 401-410 0038-0938 269:2<401 2011 269 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer