The Multi-Wavelength Environment of Second Bologna Catalog Sources
A. Paggi, F. Massaro, H. Peña-Herazo, V. Missaglia, A. Jimenez-Gallardo, F. Ricci, S. Ettori, G. Giovannini, F. Govoni, R. D. Baldi, B. Mingo, M. Murgia, E. Liuzzo, F. Galati
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38 pages, 13 figures, 6 tables. Accepted for publication in The Astrophysical Journal Supplement Series
We present the first results of the Chandra Cool Targets (CCT) survey of the Second Bologna Catalog (B2CAT) of powerful radio sources, aimed at investigating the extended X-ray emission surrounding these sources. For the first 33 sources observed in the B2CAT CCT survey, we performed both imaging and spectral X-ray analysis, producing multi-band Chandra images, and compared them with radio observations. To evaluate the presence of extended emission in the X-rays, we extracted surface flux profiles comparing them with simulated ACIS Point Spread Functions. We detected X-ray nuclear emission for 28 sources. In addition, we detected 8 regions of increased X-ray flux originating from radio hot-spots or jet knots, and a region of decreased flux, possibly associated with an X-ray cavity. We performed X-ray spectral analysis for 15 nuclei and found intrinsic absorption significantly larger than the Galactic values in four of them. We detected significant extended X-ray emission in five sources, and fitted their spectra with thermal models with gas temperatures $\sim 2 \text{ keV}$. In the case of B2.1 0742+31, the surrounding hot gas is compatible with the ICM of low luminosity clusters of galaxies, while the X-ray diffuse emission surrounding the highly disturbed WAT B2.3 2254+35 features a luminosity similar to those of relatively bright galaxy groups, although its temperature is similar to those of low luminosity galaxy clusters. These results highlight the power of the low-frequency radio selection, combined with short Chandra snapshot observations, to investigate the properties of the X-ray emission from radio sources.
AGN-DB: A Unified Multi-Wavelength Database of Active Galactic Nuclei
Eureka Scientific(尤里卡科学);Yale University(耶鲁大学);University of Miami(迈阿密大学);Universidad Diego Portales(迭戈帕托莱斯大学);Technische Universität Wien (TU Wien)(维也纳工业大学);California Institute of Technology(加州理工学院)
Compton-thick AGN Characterisation in a Multi-wavelength Context: Insights from the 70-Month \textit{SWIFT}/BAT Catalogue
Radio Cosmology Research Lab, Centre for Astronomy and Astrophysics Research, Faculty of Science, Universiti Malaya(马来亚大学理学院天体物理学与天文学研究中心射电宇宙学实验室);Centre of Foundation, Language and Malaysian Studies, Universiti Malaya-Wales(马来亚-威尔士大学基础、语言与马来西亚研究中心);National Centre for Particle Physics (NCPP), Universiti Malaya(马来亚大学国家粒子物理中心);National Astronomical Observatory of Japan, National Institutes of Natural Sciences (NINS)(日本国立天文台,国立自然科学研究所);Department of Astronomical Science, SOKENDAI (The Graduate University of Advanced Studies)(尖端研究大学院大学天体科学系);Natural Science Laboratory, Toyo University(东洋大学自然科学实验室);Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia(马来西亚国民科技大学理学院应用物理系)
The 31 Deg$^2$ Release of the Stripe 82 X-ray Survey: The Point Source Catalog
我们发布了Stripe 82 X射线测量点源目录的下一部分,该目录目前涵盖了斯隆数字巡天(SDSS)Stripe 82 Legacy字段的31.3 deg $^2$。总之,使用{ \it XMM-Newton}($>5σ$)和{ \it Chandra}($>4.5σ$)可显著检测到6181个独特的X射线源。此目录版本包括来自{ \it XMM-Newton}周期AO 13的数据,该周期约使Stripe 82 X勘探面积增加了一倍。Stripe 82 X测量的通量限值为$8.7\times10^{-16}$ erg s $^{-1}$ cm $^{-2}$、$4.7\times10^{-15}$ erg s $^{-1}$ cm $^{-2}$和$2.1\times10^{-15}$ erg s $^{-1}$ cm $^{-2}$,(0.5-2 keV),硬(2-10 keV)和全波段(0.5-10 keV),近似半面积测量通量极限为$5.4\times10^{-15}$ erg s $^{-1}$ cm $^{-2}$,$2.9\times10^{-14}$ erg s $^{-1}$ cm $^{-2}$,和$1.7\times10^{-14}$ erg s $^{-1}$ cm $^{-2}$。我们将X射线源列表与可用的多波长目录进行了匹配,包括与先前发布的Stripe 8…
A Novel Pipeline for the Identification of New Gamma-Ray Blazars from the 4FGL-Xiang-DR2 Catalog Based on Multi-wavelength Flux Distributions
School of Physics and Astronomy, China West Normal University(西华师范大学物理与天文学学院);Department of Astronomy, Yunnan University(云南大学天文系;云南省天体粒子物理重点实验室);Key Laboratory of Astroparticle Physics of Yunnan Province
The Chandra Deep Wide-Field Survey: A New Chandra Legacy Survey in the Boötes Field I. X-ray Point Source Catalog, Number Counts and Multi-Wavelength Counterparts
我们提出了一个新的,雄心勃勃的调查与钱德拉X射线天文台的9.3度$^2$牧夫座领域的NOAO深宽视场调查。宽视场探测宇宙在高红移时的统计代表性体积。钱德拉深宽场巡天利用钱德拉在广阔区域的出色灵敏度和角分辨率,结合了15年来的281次观测,总曝光时间为3.4毫秒,并在$0.5-7$ keV,$0.5-2$ keV和$2-7$ keV波段检测到6891个X射线点源,其通量低至$4.7\times10^{-16}$,$1.5\times10^{-16}$和$9\times10^{-16}$ erg cm $^{-2}$ s $^{-1}$的极限通量,分别检测策略的鲁棒性和可靠性通过广泛的,国家的最先进的模拟整个领域进行了验证。精确的计数,在良好的协议与以前的X射线调查,推导出由于独特的大量的点源检测,解决$65.0 \pm 12.8\%$的宇宙X射线背景之间的$0.5-2$千电子伏和$81.0 \pm 11.5\%$之间的$2-7$千电子伏。利用丰富的多波长数据,我们分配红移$\sim 94\%$的X射线源,估计其遮蔽和吸收校正的光度。我们提供一个电子目录,其中包含未来调查所需的所有相关数量。
A Combined Radio Multi-Survey Catalog of Fermi Unassociated Sources
由$\textit{Fermi Gamma-Ray Space Telescope}$识别的现有$γ$射线源中的大约三分之一被认为是不相关的,在其他频率/波长处没有已知的对应物。这些来源一直是天文台任务寿命期间严格审查和观测工作的主题,在这里,我们提出了一种利用现有无线电目录来检查这些来源的方法,而不需要特定的专用观测,这可能是昂贵和复杂的。通过包含许多敏感的低频目录,我们专门针对陡峭的频谱源,如卫星。这项工作已经发现了包含在591个$\textit{Fermi}$非关联场中的陡谱射电源,其中至少有21个还具有脉冲星般的$γ$射线特性。我们还根据各种无线电和$γ$射线选择确定了许多其他感兴趣的领域。
ARCHES(Astronomical Resource Cross-matching for High Energy Studies)是一个FP7-Space资助的项目,其目的是为国际天文学界提供从3XMM DR5 X射线目录中提取的大样本天体的光谱能量分布(SED)形式的良好表征的多波长数据。该项目开发了新的工具,对未分辨源的几个目录进行完全概率性的同时互相关,并开发了一个多波长探测器,用于探测扩展源的星系团。这些增强的资源已经在几个科学案例的框架中进行了测试。
The SRG/eROSITA All-Sky Survey DR2: Cumulative X-ray catalogues from the first three surveys and multi-wavelength counterparts in the western Galactic hemisphere
Max-Planck-Institut für extraterrestrische Physik(马克斯·普朗克地外物理研究所);Leibniz Institut für Astrophysik Potsdam(波茨坦阿诺德·爱因斯坦天文台莱布尼茨研究所);Exzellenzcluster ORIGINS(ORIGINS卓越集群);Institute for Astronomy and Astrophysics, National Observatory of Athens(雅典国家天文台天体物理学与天文学研究所);Department of Astronomy, University of Science and Technology of China(中国科学技术大学天文系);School of Astronomy and Space Science, University of Science and Technology of China(中国科学技术大学天文与空间科学学院)
The XMM-LSS catalogue: X-ray sources and associated multiwavelength data. Version II
我们提出了最终发布的多波长XMM-LSS数据集,覆盖了11.1平方度的整个调查区域,X射线数据处理与最新的XMM-LSS管道版本。本出版物取代Pierre et al. 2007年,《第一个五度角》出版。我们提供了X射线源列表中的常规能量带(0.5-2和2-10千电子伏),共6721个对象在深全曝光目录和5572在10千秒限制的一个,以上的检测可能性15至少在一个波段。我们还提供多波长目录,将我们的列表与IR、NIR、光学和UV目录相互关联。常规数据产品(X射线FITS图像、CFHTLS和SWIRE缩略图)与我们在米兰的可交互查询的数据库一起提供,而目录的静态快照将在最后验收完成后立即提供给CDS。