2 papers
astro-ph.SR2025
Synthetic Ca II 8542 Ã Stokes Profile Associated with Chromospheric Magnetic Reconnection in a Simulated Active Region
Xinyu Zhou, Takaaki Yokoyama, Haruhisa Iijima +4
Magnetic reconnection is an important driving mechanism of many chromospheric phenomena, e.g., UV bursts and chromospheric jets. Information about magnetic field is indispensable f…
astro-ph.SR2024
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…