Rashed Omari, H. Y., and et al. 2002,
On-Axis large Time Scale Polarization of AM-Her Stars,
ABHATH AL-YARMOUK, Basic Sciences and Engineering, vol. 11, No.1B, pp 287-303.

Hussain Yousef Omari(1), Abdulaziz A. Almulhem(2), and Eqab M. Rabei(1)

1 Phys. Dept./ Mu'tah University/Al-Karak/ JORDAN

2 Phys. Dept./ King Faisal University/Al-Ahsa/Saudi Arabia

Abstract

The AM-Her objects are observationally characterized by their strongly polarized optical cyclotron emission arising from shock-heated plasma formed near the white dwarf surface as plasma accretes from their companion stars.  Most of the properties of AM-Her, particularly the properties of the magnetic field, are determined from the measured ratio of circular to linear polarizations.  On time-scale much larger than the oscillation period, several of the relationships between polarization and the properties of the magnetic field for on-axis time-dependent oscillating shocks are being quantified and discussed.