Ultraviolet and radio flares from UX Arietis and HR 1099
Simultaneous observations of the RS CVn systems UX Ari and HR 1099 with the IUE satellite and the VLA are presented. Flaring activity is observed at ultraviolet wavelengths with the IUE when none is detected at radio wavelengths with the VLA. Radio flares with no detectable ultraviolet activity have also been observed. Thus, flares in the two spectral regions are either uncorrelated or weakly correlated. The flaring emission probably originates in different regions at the two wavelengths. Radio flares from RS CVn stars may originate in sources that are larger than, or comparable to, a star in size. This is in sharp contrast to compact, coherent radio flares from dwarf M stars. The ultraviolet flares from RS CVn stars probably originate in sources that are smaller than a component star. 18 references.
- Research Organization:
- Tufts Univ., Medford, MA (USA)
- OSTI ID:
- 6990867
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 328; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
DWARF STARS
ELECTROMAGNETIC RADIATION
PLASMA JETS
RADIATIONS
RADIOWAVE RADIATION
SPECTRA
STARS
STELLAR ACTIVITY
STELLAR FLARES
ULTRAVIOLET RADIATION
ULTRAVIOLET SPECTRA