activity
20072026
most citedRevisiting the Sunspot Number

697 citations · 1.4k across the 14 of their papers we have counts for

collaborators

16 papers

astro-ph.SR2026

The Association of Solar Radio Bursts with Eruptive and Confined Flares

Stephen M. White, Maria D. Kazachenko, Edward W. Cliver

We classify the metric radio emission associated with eruptive (CME-associated) and confined flares using the sample of events between 2010 and 2016 identified by Kazachenko (2023)…

astro-ph.SR2024★ 18 cited

The Extreme Space Weather Event of 1872 February: Sunspots, Magnetic Disturbance, and Auroral Displays

Hisashi Hayakawa, Edward W. Cliver, Frédéric Clette +19

We review observations of solar activity, geomagnetic variation, and auroral visibility for the extreme geomagnetic storm on 1872 February 4. The extreme storm (referred to here as…

astro-ph.SR2024

An impulsive geomagnetic effect from an early-impulsive flare

Hugh S. Hudson, Edward. W. Cliver, Lyndsay Fletcher +6

The geomagnetic "solar flare effect" (SFE) results from excess ionization in the Earth's ionosphere, famously first detected at the time of the Carrington flare in 1859. This indir…

astro-ph.SR2023★ 91 cited

Re-calibration of the Sunspot Number: Status Report

F. Clette, L. Lefèvre, T. Chatzistergos +18

We report progress on the ongoing recalibration of the Wolf sunspot number (SN) and Group sunspot number (GN) following the release of version 2.0 of SN in 2015. This report consti…

astro-ph.SR2022★ 12 cited

Revisiting Empirical Solar Energetic Particle Scaling Relations I. Solar flares

Athanasios Papaioannou, Konstantin Herbst, Tobias Ramm +3

Aims The possible influence of solar superflares on the near-Earth space radiation environment are assessed through the investigation of scaling laws between the peak proton flux a…

astro-ph.SR2022★ 168 cited

Extreme solar events

Edward W. Cliver, Carolus J. Schrijver, Kazunari Shibata +1

We trace the evolution of research on extreme solar and solar-terrestrial events from the 1859 Carrington event to the rapid development of the last twenty years. Our focus is on t…