论文标题
Blazar State在平面无线电类星体中的持久性
Persistence of blazar state in flat-spectrum radio quasars
论文作者
论文摘要
亮度由相对射线的核心主导的平面无线电类星体（FSRQ）通常是在“ Blazar态”中发现的，通常是从高光学极化（> 3％）和/或较大的连续性变异性中推断出来的。在这里，我们使用这两个主要的光学标记来研究在跨越40年的基线，在Blazar（或非Blazar）状态中FSRQ的延续。我们的基本样本是一组明确的，无偏的80 FSRQ集，其大型状态在1980年代通过光学偏光仪确认。四十年后，这里确定了每个FSRQ的Blazar状态，从其典型持续时间$ \ sim $ \ sim $ 3.5年的光曲线的变化来确定，低噪声（RMS $ \ sim $ 2％）和良好的节奏（$ \ sim $ 3天）（$ 3天），在Zwicky的暂时性设施项目中获得了大约40％的fs lass from subs to in 40％。 Opto-Polarimetric Survey Robopol（2013-2017）。从这两个数据库中可以发现，在过去的3-4年中，只有$ \ sim $ 10％的FSRQ经历了Blazar $ \ leftrightArrow $ non -blazar国家过渡。这加强了大型国家在单个FSRQ中长期稳定性的案例，尽管它们的状态在一年一度的时间尺度上更常见。
Flat-spectrum radio quasars (FSRQs) whose brightness is dominated by a relativistically beamed core, are frequently found in 'blazar state' commonly inferred from a high optical polarization ( > 3%), and/or a large continuum variability. Here we use these two prime optical markers to investigate continuance of an FSRQ in blazar (or non-blazar) state over an exceptionally long time baseline spanning 4 decades. Our basic sample is a well-defined, unbiased set of 80 FSRQs whose blazar state stood confirmed during 1980s from optical polarimetry. Four decades later, blazar state of each FSRQ is ascertained here from variability of their optical light-curves of typical duration $\sim$ 3.5 years, a low noise (rms $\sim$ 2%) and good cadence ($\sim$ 3 days), obtained under the Zwicky Transient Facility project ongoing since 2018. For about 40% of these FSRQs, blazar state could be ascertained additionally from the opto-polarimetric survey RoboPol (2013-2017). From both these databases it is found that only $\sim$ 10% of the FSRQs have undergone a blazar $\leftrightarrow$ non-blazar state transition over the past 3 - 4 decades. This reinforces the case for a long-term stability of blazar state in individual FSRQs, despite their state fluctuating more commonly on year-like time scales.
