chromosphere | High Altitude Observatory

Optimal spectral lines for measuring chromospheric magnetic fields

The solar spectrum seen at low resolution, below the atmospheric cutoff at 3100 Angstrom

Multiwavelength High-resolution Observations of Chromospheric Swirls in the Quiet Sun

Selected swirling events

On the Cores of Resonance Lines Formed in the Sun's Chromosphere

A comparison of 1D and 3D calculations of the brightness of Ca II K (top row), Mg II k (middle row) and H Lα (bottome row), computed as for the k line images, at the Doppler shifts shown

Detecting the Chromospheric Footpoints of the Solar Wind

SDO and IRIS full-disk observations from 2016 Feb 22

Magnetic structure of the solar chromosphere-corona transition regions

Edge-enhanced images from near the core of the Mg II k line

Measuring the magnetic origins of solar flares, CMEs and Space Weather

A smoothed UV spectrum of α alpha Cen A, obtained by the Hubble Space Telescope

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