3 papers
astro-ph.SR2026
Solar-Cycle Variation of Newly Emerging Coronal Holes during Solar Cycle 24
Akash Vinod Shirke, Khagendra Katuwal
Coronal holes (CHs) are regions of predominantly open magnetic field and important sources of high-speed solar wind streams. We present a manually compiled catalogue of newly emerg…
astro-ph.SR2026
Unipolarity of the solar magnetic field in equatorial coronal holes
Khagendra Katuwal, R. T. James McAteer
A study of the unbalanced magnetic polarity distribution of 70 coronal holes was performed. Data from the Helioseismic and Magnetic Imager (HMI) were used to examine the photospher…
astro-ph.IM2025
The CHASM-SWPC Dataset for Coronal Hole Detection & Analysis
Cutter Beck, Evan Smith, Khagendra Katuwal +2
Coronal holes (CHs) are low-activity, low-density solar coronal regions with open magnetic field lines (Cranmer 2009). In the extreme ultraviolet (EUV) spectrum, CHs appear as dark…