论文标题
新的多波长的大麻人口普查
A New Multi-Wavelength Census of Blazars
论文作者
论文摘要
背景：大麻是最罕见，最有力的活跃银河核，在当今的多频率和多理智的天体物理学中起着至关重要而增长的作用。然而，当前的Blazar目录是不完整的，尤其是在低银河纬度地区耗尽。目的：我们旨在扩大目前的Blazar人口普查，以建立具有同质天空覆盖范围的Blazar候选人目录，可以为候选者提供同类候选者，从而为无关的伽马射线源，高能中微子中微子发射的来源以及超高的能量宇宙射线提供。方法：从ALMA校准器目录开始，我们构建了1580个Blazar候选人（Alma Blazar候选人，ABC）的目录，为此我们收集了多波长信息。我们还将ABC来源与现有的Blazar目录进行了比较。结果：ABC目录填充了当前Blazar目录中缺乏低银河纬度来源。 ABC的来源比Gaia G频段中已知的Blazars明显昏暗，并且它们在SDS和智慧的颜色中显得蓝。大多数ABC来源（〜90％）具有将它们归类为QSO的光谱，而其余来源则导致银河系对象。 ABC的X射线源与已知的Blazar相似，而在伽马射线中，它们平均变暗且较软，表明FSRQ源具有显着贡献。利用明智的颜色，我们将715个ABC来源归类为不同类别的候选伽马射线。结论：我们构建了一个新的1580个候选候选大赛的目录，其中具有丰富的多波长数据集，从而填充了当前Blazar目录中缺乏低银河纬度来源。这对于确定高能量中微子或超高能量宇宙射线的来源人群尤其重要。即将进行的LSST调查收集的数据将提供一个关键工具，以研究这些来源的可能性性质。
Context:Blazars are the rarest and most powerful active galactic nuclei, playing a crucial and growing role in today multi-frequency and multi-messenger astrophysics. Current blazar catalogs, however, are incomplete and particularly depleted at low Galactic latitudes. Aims: We aim at augmenting the current blazar census to build a catalog of blazar candidates with homogeneous sky coverage that can provide candidate counterparts to unassociated gamma-ray sources, sources of high-energy neutrino emission, and ultra-high energy cosmic rays. Methods: Starting from the ALMA Calibrator Catalog we built a catalog of 1580 blazar candidates (ALMA Blazar Candidates, ABC) for which we collect multi-wavelength information. We also compared ABC sources with existing blazar catalogs. Results: The ABC catalogue fills the lack of low Galactic latitude sources in current blazar catalogues. ABC sources are significantly dimmer than known blazars in Gaia g band, and they appear bluer in SDSS and WISE colors. The majority of ABC sources (~ 90%) have optical spectra that classify them as QSO, while the remaining sources resulted galactic objects. ABC sources are similar in X-rays to known blazar, while in gamma-rays they are on average dimmer and softer, indicating a significant contribution of FSRQ sources. Making use of WISE colours, we classified 715 ABC sources as candidate gamma-ray blazar of different classes. Conclusions: We built a new catalogue of 1580 candidate blazars with a rich multi-wavelength data-set, filling the lack of low Galactic latitude sources in current blazar catalogues. This will be particularly important to identify the source population of high energy neutrinos or ultra-high energy cosmic rays. The data collected by the upcoming LSST surveys will provide a key tool to investigate the possible blazar nature of these sources.
