Simulations of the Sunyaev–Zel'dovich effect from quasars
Simulations of the Sunyaev–Zel'dovich effect from quasars
复制标题
类星体 Sunyaev-Zeldovich 效应的模拟
DOI：
10.1111/j.1365-2966.2008.13784.x
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发表时间：
2008
影响因子：
4.8
通讯作者：
I. Pelupessy
中科院分区：
文献类型：
--
作者：
S. Chatterjee;T. Matteo;A. Kosowsky;I. Pelupessy
类星体反馈很可能对宇宙结构的形成产生重大但仅部分了解的影响。这种反馈机制的潜在直接探测是孙亚耶夫-泽尔多维奇（SZ）效应：类星体发出的能量加热周围的星系间介质，并引起穿过该区域的微波背景辐射的畸变。在这里，我们使用宇宙流体动力学模拟来研究这种热类星体气泡的形成，其中包括对黑洞生长和相关反馈的自洽处理，以及辐射气体冷却和恒星形成。通过这个模拟，我们构建了黑洞周围所产生的 SZ 效应的微波图，具有一定的质量和红移范围。温度畸变的大小大约与黑洞质量和吸积率成正比，典型的幅度在 10 角秒左右的角尺度上高达几个微开尔文。我们讨论了通过当前和未来的单碟和干涉观测（包括阿塔卡马大型毫米波阵列（ALMA）和康奈尔加州理工学院阿塔卡马望远镜（CCAT））直接探测该信号的前景。这些测量将具有挑战性，但将使我们能够描述超大质量黑洞的演化和生长及其能量反馈对星系形成的作用。
Quasar feedback has most likely a substantial but only partially understood impact on the formation of structure in the universe. A potential direct probe of this feedback mechanism is the Sunyaev-Zel'dovich (SZ) effect: energy emitted from quasar heats the surrounding intergalactic medium and induces a distortion in the microwave background radiation passing through the region. Here, we examine the formation of such hot quasar bubbles using a cosmological hydrodynamic simulation which includes a self-consistent treatment of black hole growth and associated feedback, along with radiative gas cooling and star formation. From this simulation, we construct microwave maps of the resulting SZ effect around black holes with a range of masses and redshifts. The size of the temperature distortion scales approximately with black hole mass and accretion rate, with a typical amplitude up to a few micro-Kelvin on angular scales around 10 arcsec. We discuss prospects for the direct detection of this signal with current and future single-dish and interferometric observations, including Atacama Large Millimetre Array (ALMA) and Cornell Caltech Atacama Telescope (CCAT). These measurements will be challenging, but will allow us to characterize the evolution and growth of supermassive black holes and the role of their energy feedback on galaxy formation.
影响因子：
8.7
作者：
Bennett, CL;Halpern, M;Weiland, JL
通讯作者：
Weiland, JL