422 citations · 4.7k across the 113 of their papers we have counts for
9 papers · 1 filter
Evolution of Anemone AR NOAA 10798 and the Related Geo-Effective Flares and CMEs
Ayumi Asai, Kazunari Shibata, Takako T. Ishii +4
We present a detailed examination of the features of the Active Region (AR) NOAA 10798. This AR generated coronal mass ejections (CMEs) that caused a large geomagnetic storm on 24…
Solar Activity: Triennial Report of IAU Commission 10 (2006-2009)
J. A. Klimchuk, L. van Driel-Gesztelyi, C. J. Schrijver +9
Commission 10 deals with solar activity in all of its forms, ranging from the smallest nanoflares to the largest coronal mass ejections. This report reviews scientific progress ove…
Space Weather Application Using Projected Velocity Asymmetry of Halo CMEs
G. Michalek, N. Gopalswamy, S. Yashiro
Halo coronal mass ejections (HCMEs) originating from regions close to the center of the Sun are likely to be responsible for severe geomagnetic storms. It is important to predict g…
Geoeffectiveness of halo CMEs
G. Michalek, N. Gopalswamy, A. Lara +1
Halo coronal mass ejections (HCMEs) originating from regions close to the center of the Sun are likely to be geoeffective. Assuming that the shape of HCMEs is a cone and they propa…
A new possibility to estimate the width, source location and velocity of halo CMEs
G. Michalek, N. Gopalswamy, S. Yashiro
It is well know that the coronagraphic observations of halo CMEs are subject to projection effects. Viewing in the plane of the sky does not allow us to determine the crucial param…
Width of Radio-Loud and Radio-Quiet CMEs
G. Michalek, N. Gopalswamy, H. Xie
In the present paper we report on the difference in angular sizes between radio-loud and radio-quiet CMEs. For this purpose we compiled these two samples of events using Wind/WAVES…
Prediction Space Weather Using an Asymmetric Cone Model for Halo CMEs
G. Michalek, N. Gopalswamy, S. Yashiro
Halo coronal mass ejections (HCMEs) are responsible of the most severe geomagnetic storms. A prediction of their geoeffectiveness and travel time to Earth's vicinity is crucial to…
Spatial Relationship between Solar Flares and Coronal Mass Ejections
S. Yashiro, G. Michalek, S. Akiyama +2
We report on the spatial relationship between solar flares and coronal mass ejections (CMEs) observed during 1996-2005 inclusive. We identified 496 flare-CME pairs considering limb…
Different Power-law Indices in the Frequency Distributions of Flares with and without Coronal Mass Ejections
S. Yashiro, S. Akiyama, N. Gopalswamy +1
We investigated the frequency distributions of flares with and without coronal mass ejections (CMEs) as a function of flare parameters (peak flux, fluence, and duration of soft X-r…