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arXiv 2310.09445astro-ph.GA
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高红移类星体周围苏尼亚耶夫-泽尔多维奇效应光晕的观测约束

Observational Constraints on Sunyaev-Zeldovich Effect Halos Around High-z Quasars

Kyle Massingill, Brian Mason, Mark Lacy, Bjorn H. C. Emonts, Ilsang Yoon, Jianrui Li, Craig Sarazin

AI总结:

利用ALMA对10个高红移超亮类星体的叠加观测,测量康普顿y参数并约束热电离气体,限制其暗物质晕质量低于10^13太阳质量和反馈风功率低于10^12太阳光度,不足类星体热光度的1%。

摘要:

我们展示了来自阿塔卡马大型毫米/亚毫米阵列(ALMA)对10个高红移($2.2 \le z \le 2.7$)超亮类星体(QSOs)的连续谱观测,并通过叠加分析约束了热电离的星系周气体的存在。我们测量了康普顿y参数轮廓,其峰值在半径约50 kpc处为$(1.7 \pm 1.1) \times 10^{-6}$。我们将叠加观测与活动星系核(AGN)反馈风模型和广义纳瓦罗-弗伦克-怀特(gNFW)压力轮廓模型进行比较,以约束叠加QSOs的风亮度和暗物质晕质量。我们的观测将叠加样本的暗物质晕质量限制为$<1\times 10^{13}M_{\odot}$,并将反馈风功率限制为$<1\times 10^{12}L_{\odot}$,这小于类星体热光度(bolometric luminosity)的1%。

英文摘要:

We present continuum observations from the Atacama Large Millimeter/submillimeter Array (ALMA) of 10 high-redshift ($2.2 \le z \le 2.7$) ultraluminous quasars (QSOs) and constrain the presence of hot, ionized, circum-galactic gas in a stacking analysis. We measure a Compton-y parameter profile with a peak value of $(1.7 \pm 1.1) \times 10^{-6}$ at a radius of $\sim50$ kpc. We compare our stacked observations to active galactic nucleus (AGN) feedback wind models and generalized Navarro-Frenk-White (gNFW) pressure profile models to constrain the wind luminosity and halo mass of the stacked QSOs. Our observations constrain the observed stack's halo mass to $<1\times 10^{13}M_{\odot}$ and the stack's feedback wind power $<1\times 10^{12}L_{\odot}$, which is $<1$% of the bolometric luminosity of the quasar.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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