对天蝎座AR中白矮星脉冲星自旋下降的重新评估
A reevaluation of the proposed spin-down of the white dwarf pulsar in AR Scorpii
摘要：
我们提出了高速光学光度观测，跨越2年，最近发现的白矮星脉冲星AR天蝎座。轨道、自旋和拍频调制的振幅在我们观测的时间跨度内似乎非常稳定和可重复。有人认为，天蝎座AR的偏振和非偏振发射是由白矮星的自旋下降提供动力的。然而，我们发现，我们的新数据是不一致的出版的自旋下降星历。虽然我们的数据是一致的，一个恒定的自旋周期，在一个延长的时间基础上进一步的观测，以确定真正的自旋演化的白矮星是必要的。
英文摘要：
We present high-speed optical photometric observations, spanning ~2 years, of the recently-discovered white dwarf pulsar AR Scorpii. The amplitudes of the orbital, spin and beat modulations appear to be remarkably stable and repeatable over the time span of our observations. It has been suggested that the polarized and non-polarized emission from AR Scorpii is powered by the spin-down of the white dwarf. However, we find that our new data is inconsistent with the published spin-down ephemeris. Whilst our data is consistent with a constant spin period further observations over an extended time-base are required in order to ascertain the true spin-evolution of the white dwarf.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
