The Zeeman Effect in the Sobolev Approximation II: Split Monopole Fields and the 'Heartbeat' Stokes V Profile

Autor:	Ignace, K. G. Gayley R.
Rok vydání:	2009
Předmět:	Astrophysics - Solar and Stellar Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics
Zdroj:	Astrophys.J.708:615-624,2010
Druh dokumentu:	Working Paper
DOI:	10.1088/0004-637X/708/1/615
Popis:	We calculate the circularly polarized Stokes V profile for emission lines, formed in hot-star winds threaded with a weak radial magnetic field. For simplicity, the field is treated as a split monopole under the assumptions that it has been radially combed by the wind, and rotation is not playing a central role. Invoking the weak-field approximation, we find that the V profile has a characteristic ``heartbeat'' shape exhibiting multiple sign inversions, which might be mistaken for noise in the absence of theoretical guidance. We also conclude that there is a tendency for the V profile to integrate to zero on each side of the line separately. Comment: 22 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0906.3048 Zobrazit plný text záznamu View this record from Arxiv