论文标题
使用多波长观测来限制HBL Blazar中的X射线排放
Constraining X-ray emission in HBL blazars using multiwavelength observations
论文作者
论文摘要
极端HBL型Blazar的X射线光谱位于峰值以下的能量，位于宽带光谱分布（SED）的同步加速器分支中。外推X射线光谱的关节拟合以及宿主星系模板可以表征SED中的同步加速器分支。 X射线光谱通常以纯幂律模型为特征。然而，在后一种情况下，很难将固有曲率与多余的吸收区分开。在本文中，我们专注于五个观察到的五种盛装：1ES 0229+200，PKS 0548-322，RX J1136+6737，1ES 1741+196，1ES 2344+514。我们使用以宿主星系，光谱曲率，吸收和紫外线过量为特征的模型来限制这五个Blazar的红外发射发射，以分离这些光谱特征。对于四个来源：1ES 0229+200，PKS 0548-322，1ES 1741+196，1ES 2344+514与Leiden Argentina Bonn调查的原子中性氢拟合的频谱拟合，导致宽带光谱分布中存在显着UV的过量。这种多余的可以解释为额外的组件，例如蓝色凹凸。然而，为了描述这些大麻的光谱而没有如此多余的过量，需要从莱顿·阿根廷波恩调查中额外吸收原子中性氢。
The X-ray spectrum of extreme HBL type blazars is located in the synchrotron branch of the broadband spectral energy distribution (SED), at energies below the peak. A joint fit of the extrapolated X-ray spectra together with a host galaxy template allows characterizing the synchrotron branch in the SED. The X-ray spectrum is usually characterized either with a pure or a curved power-law model. In the latter case, however, it is hard to distinguish an intrinsic curvature from excess absorption. In this paper, we focus on five well-observed blazars: 1ES 0229+200, PKS 0548-322, RX J1136+6737, 1ES 1741+196, 1ES 2344+514. We constrain the infrared-to-X-ray emission of these five blazars using a model that is characterized by the host galaxy, spectral curvature, absorption, and ultraviolet excess to separate these spectral features. In the case of four sources: 1ES 0229+200, PKS 0548-322, 1ES 1741+196, 1ES 2344+514 the spectral fit with the atomic neutral hydrogen from the Leiden Argentina Bonn Survey result in a significant UV excess present in the broadband spectral energy distribution. Such excess can be interpreted as an additional component, for example, a blue bump. However, in order to describe spectra of these blazars without such excess, additional absorption to the atomic neutral hydrogen from the Leiden Argentina Bonn Survey is needed.
