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A Possible Mechanism to Explain the Narrow Line Variability of Seyfert Galaxies on Timescales of Monthsстатья
- Автор: Bochkarev N.G.
- Сборник: Observational Evidence of Activity in Galaxies
- Серия: IAU Symposium
- Том: 121
- Год издания: 1987
- Издательство: D. Reidel
- Местоположение издательства: Dordrecht, Holland, Netherlands
- Первая страница: 223
- Аннотация: Gas in the shadow of clouds in the outer parts of the broad line region can radiate a considerable fraction (dozens of percent) of the narrow emission line flux. The variability of the X-ray luminosity of the central source should result in significant variations of the gas emission on a timescale of months. Particularly strong changes of line intensities and column densities of gas in the shadow (\equiv10$^23$cm$^-2$) can be produced by phase transfer between two thermally stable fluids with temperatures 10 - 20\times10$^3$K and 40 - 100\times10$^3$K, which can exist in the shadow of clouds.
- Добавил в систему: Бочкарев Николай Геннадиевич