The aurora: sun-earth interactions
Aurorae are bands of colored light that appear when electronically charged particles from the sun penetrate the Earth's upper atmosphere. This book examines the underlying causes and occurrence of the aurora. It contains illustrated descriptions of auroral forms and advice on how to observe and photograph the aurora.
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The aurora in history
Scientific investigations of the aurora
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active regions Akasofu Allen belts amateur astronomers appear associated Astron Aurora Section auroral activity auroral display auroral forms auroral light auroral oval band bright chromosphere comets coronal hole coronal mass ejection cosmic rays detected disturbed Earth Earth-radii electrons energetic particles energy enhanced frequently geomagnetic activity geomagnetic storms give rise glow heliopause heliosphere hemisphere high atmosphere high latitudes hydrogen-alpha intense interactions interplanetary ionization ionosphere km altitude latitudes light Livesey locations lower latitudes magnetic field lines magnetic polarity magnetometer magnetosphere magnetotail major Maunder Minimum meteor mid-latitudes minimum neutral sheet night night-side noctilucent clouds northern observations observatories occur orbit oxygen phenomena photographic photosphere plasma produced protons radio records resulting rotation satellites seen solar activity solar atmosphere solar flares solar system solar wind spacecraft structure substorm Sun's sunspot activity sunspot cycle sunspot groups sunspot maximum ultraviolet upper atmosphere visible visual wavelengths X-ray zodiacal light