ON THE POLARIZATION OF RESONANTLY SCATTERED EMISSION-LINES .1. EMISSION AND ABSORPTION-COEFFICIENTS IN AN ANISOTROPIC RADIATION-FIELD

被引：33

作者：

LEE, HW ^{[1
]}

BLANDFORD, RD ^{[1
]}

WESTERN, L ^{[1
]}

机构：

[1] AEROSP CORP,LOS ANGELES,CA 90061

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1994年 / 267卷 / 02期

关键词：

ATOMIC PROCESSES; LINE; FORMATION; POLARIZATION; RADIATIVE TRANSFER; GALAXIES; ACTIVE;

D O I：

10.1093/mnras/267.2.303

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Source functions and absorption coefficients for polarized radiation in a given anisotropic radiation field are calculated for a variety of permitted electric dipole transitions in the L-S coupling limit. Collisional, radiative and magnetic mixing of the ground sublevels are all considered. The polarization of the self-consistent, emergent radiation field is computed, using an anisotropic escape probability formalism to treat the radiative transfer. It is found that the radiative mixing can enhance the polarization for transitions with large angular momentum, and degrees of polarization less than or similar 10 per cent are obtained for transitions with small angular momentum.

引用

页码：303 / 311

页数：9

共 11 条

[1]

Condon E. U., 1951, THEORY ATOMIC SPECTR

[2] MAGNETIC ACCELERATION OF BROAD EMISSION-LINE CLOUDS IN ACTIVE GALACTIC NUCLEI [J].