55 citations · 68 across the 3 of their papers we have counts for
3 papers
astro-ph.SR2024★ 2 cited
Evaluation of Sunspot Areas Derived by Automated Sunspot-Detection Methods
Yoichiro Hanaoka
Sunspot-area measurements using digital images captured by two telescopes at the Mitaka campus of the National Astronomical Observatory of Japan are conducted using automated sunsp…
astro-ph.SR2020★ 55 cited
Analysis of full disc Ca II K spectroheliograms III. Plage area composite series covering 1892-2019
Theodosios Chatzistergos, Ilaria Ermolli, Natalie A. Krivova +16
We derive the plage area evolution over the last 12 solar cycles employing data from all Ca II K archives available publicly in digital form known to us, including several as yet u…
astro-ph.SR2011★ 11 cited
Probing the Role of Magnetic-Field Variations in NOAA AR 8038 in Producing Solar Flare and CME on 12 May 1997
Rajmal Jain, Arun K. Awasthi, Babita Chandel +3
We carried out a multi-wavelength study of a CME and a medium-size 1B/C1.3 flare occurring on 12 May 1997. We present the investigation of magnetic-field variations in the NOAA Act…