类星体HⅠ谱线的切仑柯夫红移与线强比I(Lyα)/I(Hβ)的关系  

THE RELATION BETWEEN CERENKOV REDSHIFT OF HI LINES OF QUASARS AND THE INTENSITY RATIO I(Lya)/(CIV)

作　　者：晏明[1] 尤峻汉[1] 程富华[1] 

机构地区：[1]中国科学技术大学天体物理中心

出　　处：《天体物理学报》1989年第3期218-223,共6页

基　　金：国家自然科学基金

摘　　要：在切仑柯夫线发射理论的框架下,本文统一地讨论了类星体HI谱线的切合柯夫红移与线强比I(Lyα)/I(Hβ)之间的内在关系。忽略类星体宽线区气云外层光薄区中HI复合线的贡献,利用观测到的Lyα线相对于CIV线的相对红移,即切金柯夫红移,定出第二能级上粒子数布居R_2～0.02,利用观测的〈I(Hα)/I(Hβ)〉值定出参量x_β～14.0。在给定参量T～11000K时,HI的巴尔末线的切仑柯夫红移与线强比I(Lyα)/I(Hβ)同时与观测值相符甚佳,这对切仑柯夫线发射理论是一个有力的支持。Based on the Cerenkov Line Emission Theory, this paper systematically discusses the intrinsic relation between the Cerenkov redshift of HI emission lines of quasars and the line intensity ratio I(Lyα)/I(Hβ). Neglecting the contributions of HI recombination lines in the outer optically thin zones of quasars we can obtain the particle population at the 2nd energy level, R2 ≈ 0.02, using the observed relative redshift of Lya line with respect to CIV line, i. e. the Cerenkov redshift. We can also determine the parameter, Xβ ≈ 14.0, using the observed <I(Hα)/I(H/β)> value. For a given parameter T - 11000 K, the Cerenkov redshift of HI Balmer lines and the intensity ratio I(Lyα)/I(Hβ) are both in good agreement with the observations. This is a strong support to the Cerenkov Line Emission Theory.

关 键 词：类星体 HI谱线 红移 线强比 

分 类 号：P158[天文地球—天文学]