300 citations · 2.9k across the 65 of their papers we have counts for
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Diffuse Interplanetary Radio Emission: Shock Emission or a Type III storm?
Nat Gopalswamy, Sachiko Akiyama, Pertti Mäkelä +1
We present a clear case of a Diffuse Interplanetary Radio Emission (DIRE) event observed during 2002 March 11-12 in association with a fast coronal mass ejection (CME). In the prev…
Intercycle and intracycle variation of halo CME rate obtained from SOHO/LASCO observations
Fithanegest Kassa Dagnew, Nat Gopalswamy, Solomon Belay Tessema +3
We report on the properties of halo coronal mass ejections (HCMEs) in solar cycles 23 and 24. We compare the HCMEs properties between the corresponding phases (rise, maximum, and d…
Effect of the Weakened Heliosphere in Solar Cycle 24 on the Properties of Coronal Mass Ejections
N. Gopalswamy, S. Akiyama, S. Yashiro +3
Solar cycle (SC) 24 has come to an end by the end of 2019, providing information on two full cycles to understand the manifestations of SC 24, the smallest cycle in the Space Age t…
The State of the Heliosphere Revealed by Limb Halo Coronal Mass Ejections in Solar Cycles 23 and 24
Nat Gopalswamy, Sachiko Akiyama, Seiji Yashiro
We compare the properties of halo coronal mass ejections (CMEs) that originate close to the limb (within a central meridian distance range of 60 to 90 deg) during solar cycles 23 a…
A Catalog of Prominence Eruptions Detected Automatically in the SDO/AIA 304 Å Images
S. Yashiro, N. Gopalswamy, S. Akiyama +1
We report on a statistical study of prominence eruptions (PEs) using a catalog of these events routinely imaged by the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamic…
On the properties of solar energetic particle events associated with metric type II radio bursts
Pertti Mäkelä, Nat Gopalswamy, Hong Xie +3
Metric type II solar radio bursts and solar energetic particles (SEPs) are both associated with shock fronts driven by coronal mass ejections (CMEs) in the solar corona. Recent stu…