斯巴鲁Hyper Suprime-Cam挖掘出超过360 deg2的巨大过密和欠密结构，z=1
Subaru Hyper Suprime-Cam excavates colossal over- and under-dense structures over 360 deg2 out to z=1
摘要：
斯巴鲁战略计划与超级超级凸轮（HSC-SSP）已被证明是成功的，其非常广泛的区域覆盖在过去几年。利用这一特点，我们报告了基于第二次公开数据发布的$z=$ 0.3-1的膨胀过密和欠密结构的勘探和研究的初步结果，其中$\sim$ 800万个$i<23$ mag源的光学5波段光度数据在$\sim360$平方度上可用。我们不仅确认了已知的超星系团，而且还发现了$z=1$以外的巨大过密和欠密区域的候选者。模拟数据分析表明，密度峰值将涉及一个或多个红移的大质量暗物质晕（$>10^{14}$ M $_\odot$），而密度谷往往是空的质量晕超过$>10$共同运动的Mpc。此外，在平均切向切变剖面中，$z<0.6$的密度峰和密度谷分别被识别为正的和负的弱透镜信号，与全天弱透镜模拟结果吻合较好。未来广泛的光谱调查将能够解决这些巨大的结构在三维空间。整个调查区的数量密度信息将作为网格点数据在HSC-SSP数据发布网站（https：//hsc.mtk.nao.ac.jp/ssp/data-release/）上提供。
英文摘要：
Subaru Strategic Program with the Hyper-Suprime Cam (HSC-SSP) has proven to be successful with its extremely-wide area coverage in past years. Taking advantages of this feature, we report initial results from exploration and research of expansive over- and under-dense structures at $z=$ 0.3-1 based on the second Public Data Release where optical 5-band photometric data for $\sim$ eight million sources with $i<23$ mag are available over $\sim360$ square degrees. We not only confirm known superclusters but also find candidates of titanic over- and under-dense regions out to $z=1$. The mock data analysis suggests that the density peaks would involve one or more massive dark matter haloes ($>10^{14}$ M$_\odot$) of the redshift, and the density troughs tend to be empty of massive haloes over $>10$ comoving Mpc. Besides, the density peaks and troughs at $z<0.6$ are in part identified as positive and negative weak lensing signals respectively, in mean tangential shear profiles, showing a good agreement with those inferred from the full-sky weak lensing simulation. The coming extensive spectroscopic surveys will be able to resolve these colossal structures in three-dimensional space. The number density information over the entire survey field will be available as grid-point data on the website of the HSC-SSP data release (https://hsc.mtk.nao.ac.jp/ssp/data-release/).
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