Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....61..625k&link_type=abstract
Astronomy and Astrophysics, vol. 61, no. 5, Dec. 1977, p. 625-634.
Astronomy and Astrophysics
Astrophysics
6
High Temperature Plasmas, Stellar Models, Thermal Plasmas, X Ray Sources, Bremsstrahlung, Dwarf Stars, Electron Density (Concentration), Magnetohydrodynamic Flow, Mathematical Models, Stellar Coronas, Thermal Energy
Scientific paper
A quasi-steady 'hot-plasma' model is constructed which can represent the essential characteristics of the strongest flares of EV Lac observed in the initial-decline phase. The model consists of hot-plasma bubbles with a temperature of about 100 million K, an electron density of approximately 50 billion per cu cm, and a total volume of the stellar dimension, relatively cool dense 'foot' points of the bubbles with a temperature of the order of 100,000 K and an electron density of about 5 by 10 to the 13th power per cu cm. The former store the flare energy thermally, most of which is conducted to the foot points and emitted effectively. The thermal reservoir emits X-rays in the keV region, while the foot points emit partially saturated UV radiation and the fairly flat optical continuum. A magnetic field of a few kilogauss is required at the foot points to confine the hot-plasma bubbles. Scaling laws for other UV Cet-type stars and possibilities for observational tests of this model are discussed.
No associations
LandOfFree
A hot-plasma model of the strongest flares of EV Lacertae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A hot-plasma model of the strongest flares of EV Lacertae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A hot-plasma model of the strongest flares of EV Lacertae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1417270