论文标题
类星CTD 135不是紧凑的对称对象
The Quasar CTD 135 is Not a Compact Symmetric Object
论文作者
论文摘要
基于多通道基线干涉仪（VLBI）对MilliariaLcsecsecsecsecsecsecsecsecssecssecssecssecsecssecssecssecsecssecssecs的对称射线结构，已经提出了无线电大声的类星体CTD 135（2234+282，J2236+2828）作为候选紧凑型对称对象（CSO）。 CSO被称为年轻的喷射活性银河核（AGN），其相对论等离子体喷气机相对于视线未对准。 CTD 135作为CSO候选人的特殊性是在伽马射线中的检测，而绝大多数已知的伽玛射线发射AGN是Blazars，Jets指向我们的观看方向。由于只有少数CSO被称为伽马射线来源，因此单个候选者的明确识别对于研究这种罕见的对象很重要。通过从最近的文献中收集和解释观察数据，我们重新审视了CTD 135的分类。我们提供证据表明，该对象基于其具有高亮度温度，多个波带的可变性，多种波段和红外颜色的平坦光谱无线电核心，应分类为Blazar而不是CSO
The radio-loud quasar CTD 135 (2234+282, J2236+2828) has been proposed as a candidate compact symmetric object (CSO), based on its symmetric radio structure revealed by multi-frequency very long baseline interferometry (VLBI) imaging observations on milliarcsec angular scales. CSOs are known as young jetted active galactic nuclei (AGN) whose relativistic plasma jets are misaligned with respect to the line of sight. The peculiarity of CTD 135 as a CSO candidate was its detection in gamma-rays, while the vast majority of known gamma-ray emitting AGN are blazars with jets pointing close to our viewing direction. Since only a handful of CSOs are known as gamma-ray sources, the unambiguous identification of a single candidate is important for studying this rare class of objects. By collecting and interpreting observational data from the recent literature, we revisit the classification of CTD 135. We present evidence that the object, based on its flat-spectrum radio core with high brightness temperature, variability at multiple wavebands, and infrared colours should be classified as a blazar rather than a CSO
