The binary system AR Scorpii hosts an M-type main sequence cool star orbiting around a magnetic white dwarf in the Milky Way Galaxy. The broadband non-thermal emission over radio, optical and X-ray wavebands observed from AR Scorpii indicates strong modulations on the spin frequency of the white dwarf as well as the spin-orbit beat frequency of the system. Therefore, AR Scorpii is also referred to as a white dwarf pulsar wherein a fast spinning white dwarf star plays very crucial role in the broadband non-thermal emission. Several interpretations for the observed features of AR Scorpii appear in the literature without firm conclusions. In this paper, we investigate connection between some of the important physical properties like spin-down power, surface magnetic field, equation of state, temperature and gravity associated with the white dwarf in the binary system AR Scorpii and its observational characteristics. We explore the plausible effects of white dwarf surface magnetic field on the absence of substantial accretion in this binary system and also discuss the gravitational wave emission due to magnetic deformation mechanism.

中文翻译：

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双星系统天蝎座白矮星的性质及其观测特征

双星系统 AR Scorpii 拥有一颗 M 型主序冷星，围绕银河系中的一颗磁性白矮星运行。从 AR Scorpii 观察到的无线电、光学和 X 射线波段上的宽带非热发射表明白矮星的自旋频率以及系统的自旋轨道拍频受到强烈调制。因此，AR Scorpii 也被称为白矮星脉冲星，其中快速旋转的白矮星在宽带非热辐射中起着至关重要的作用。文献中出现了对 AR Scorpii 观察到的特征的几种解释，但没有确定的结论。在本文中，我们研究了一些重要的物理特性之间的联系，如自旋功率、表面磁场、状态方程、双星系统天蝎座白矮星的温度和重力及其观测特征。我们探索了白矮星表面磁场对该二元系统中没有大量吸积的合理影响，并讨论了由于磁变形机制引起的引力波发射。