coronal hole

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coronal hole [kə′rō·nəl ‚hōl]

(astronomy)

A large-scale, apparently open structure in the solar corona, devoid of any soft x-ray emission and surrounded by diverging boundary structures.

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No references found			s sunspots became less common over the last few years, large coronal holes lingered in the surface of the Sun near its equator. Quiet Sun bombards earth with fierce solar streams by Asian News International These dark-appearing, open regions, known as coronal holes, permit solar wind to escape into space. The sun's halo in 3-D: new perspectives on solar explosions by Cowen, Ron / Science News I think that as Ulysses heads back down to lower latitudes, the sun is getting quieter and quieter as the large polar coronal hole that emits the high-speed stable solar wind reopens behind us," said McComas. International Ulysses Team Meets At SwRI by Business Wire			Corona del Mar State Beach Corona Discharge corona failure Corona Losses corona lucis corona method corona radiata corona resistance corona shield corona stabilization corona start voltage corona tube corona voltmeter corona wire coronadite Coronado Coronado National Forest Coronado National Memorial Coronado Trail Scenic Byway Coronado, Francisco Vasquez de Coronado, Francisco Vàsquez de Coronado, Francisco Vásquez de Coronado, Francisco Vázquez de Coronagraph coronal green line coronal hole coronal mass ejection coronal suture Coronaria Coronaritis coronarium coronary coronary artery coronary artery disease coronary bypass Coronary Circulation coronary disease coronary failure coronary heart disease Coronary Insufficiency coronary occlusion coronary sinus coronary stenosis coronary sulcus coronary thrombosis coronary valve coronary vein Coronatae coronation Coronation Gulf Coronaviridae			Coronado Police Department Coronado Police Officers Association Coronado Springs Coronado Trail Scenic Byway Coronado Yacht Club Coronado, Francisco Vasquez de Coronado, Francisco Vàsquez de Coronado, Francisco Vásquez de Coronado, Francisco Vázquez de coronae coronae coronae coronae, coronas coronae, coronas coronae, coronas coronagraph coronagraph Coronagraphic Imager with Adaptive Optics coronagraphs coronagraphs Coronagraphy Coronagraphy coronal coronal Coronal Density Spectrometer Coronal Diagnostic Spectrometer Coronal Discharge Coronal Discharge coronal green line Coronal Helium Abundance Spacelab Experiment coronal hole Coronal Holes Coronal Holes Coronal Holes coronal margin coronal margin coronal margin coronal margin coronal margin coronal mass ejection coronal mass ejection coronal mass ejection Coronal mass ejections Coronal mass ejections Coronal Multi-Channel Polarimeter coronal p coronal p coronal p coronal p coronal plane coronal plane coronal plane coronal plane coronal plane postural decompensation coronal planes coronal planes coronal planes coronal planes coronal polishing coronal polishing coronal polishing

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