Solar and late-type dwarfs

Conference · Fri Jan 01 04:00:00 EST 1982 · Adv. Space Res.; (United States)

OSTI ID:6449805

Golub, L

The Einstein Observatory's and the IUE's contributions to knowledge of coronal formation in late-type stars are discussed. The HR diagram of stars seen as X-ray sources by these observatories is presented, and the influence of rotation on X-ray emission is reviewed. Emission from the Alpha Cen system and from active stars with quiescent coronae is examined, and the extent of the contribution of emission from normal stars to the soft X-ray background is addressed. The quiescent and flare emission from Alpha Cen, the temporal variability of X-ray emission from a sample of active chromosphere stars, and the predicted contribution of chromospheric emission to the diffuse soft X-ray background are depicted. Chromospheric indicators of activity are discussed, the connection between surface magnetic fields and X-ray emission in the chromosphere is briefly reviewed, and the quantitative links between X-ray data and magnetic fields is summarily presented.

• Research Organization: Smithsonian Astrophysical Observatory, Cambridge, MA
• OSTI ID: 6449805
• Report Number(s): CONF-820582-
• Conference Information: Journal Name: Adv. Space Res.; (United States) Journal Volume: 2
• Country of Publication: United States
• Language: English

Related Subjects

640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATMOSPHERES
CHROMOSPHERE
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DWARF STARS
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
MAGNETIC FIELDS
RADIATIONS
SOLAR ATMOSPHERE
STARS
STELLAR ATMOSPHERES
STELLAR CORONAE
VARIATIONS
X RADIATION