128 citations · 128 across the 5 of their papers we have counts for
7 papers
Solar Cycle Variation of Sustained Gamma Ray Emission from the Sun
Nat Gopalswamy, Pertti Mäkelä, Seiji Yashiro +3
We investigated the occurrence rate of the sustained gamma ray emission (SGRE) events from the Sun using data obtained by Fermi Large Area Telescope (LAT) since its launch in 2008.…
Implications of the abundance of halo coronal mass ejections for the strength of solar cycle 25
Nat Gopalswamy, Grzegorz Michalek, Seiji Yashiro +3
We assess the relative strength of solar cycle (SC) 25 with respect to SCs 23 and 24 based on the abundance of halo coronal mass ejections (CMEs). We make use of the halo CME datab…
The SOHO LASCO CME Catalog -- Version 2
Nat Gopalswamy, Grzegorz Michałek, Seiji Yashiro +4
This paper provides an update on the coronal mass ejection (CME) catalog maintained at the CDAW Data Center, NASA Goddard Space Flight Center (https://cdaw.gsfc.nasa.gov/CME_list).…
Type III Radio Bursts from Solar Eruptions and their Connection to GLE and SGRE Events
Nat Gopalswamy, Anshu Kumari, Pertti A. Mäkelä
We report on the close similarity of coronal mass ejection (CME) properties in ground level enhancement (GLE) in solar energetic particle (SEP) events and sustained gamma ray emiss…
Diffuse Interplanetary Radio Emission from a Polar Coronal Mass Ejection
N. Gopalswamy, P. Makela, S. Yashiro +1
We report on the first detection of nonthermal radio emission associated with a polar coronal mass ejection. We call the radio emission as diffuse interplanetary radio emission (DI…
A Weak Fermi Gamma-ray Event Associated with a Halo CME and a Type II Radio Burst
N. Gopalswamy, P. Mäkelä, S. Yashiro
We report on the 2015 June 25 sustained gamma-ray emission (SGRE) event associated with a halo coronal mass ejection and a type II radio burst in the decameter-hectometric (DH) wav…
Major Solar Eruptions and High Energy Particle Events during Solar Cycle 24
N. Gopalswamy, H. Xie, S. Akiyama +2
We report on a study of all major solar eruptions that occurred on the front-side of the Sun during the rise to peak phase of cycle 24 (first 62 months) in order to understand the…