The cross-correlation between the 21 cm field and the galaxy distribution is a potential probe of the Epoch of Reionization (EoR). The 21 cm signal traces neutral gas in the intergalactic medium and, on large spatial scales, this should be anti-correlated with the high-redshift galaxy distribution which partly sources and tracks the ionized gas. In the near future, interferometers such as the Hydrogen Epoch of Reionization Array (HERA) are projected to provide extremely sensitive measurements of the 21 cm power spectrum. At the same time, the Nancy Grace Roman Space Telescope (Roman) will produce the most extensive catalog to date of bright galaxies from the EoR. Using semi-numeric simulations of reionization, we explore the prospects for measuring the cross-power spectrum between the 21 cm and galaxy fields during the EoR. We forecast a 14$σ$ detection between HERA and Roman, assuming an overlapping survey area of 500 deg$^2$, redshift uncertainties of $σ_z = 0.01$ (as expected for the high-latitude spectroscopic survey of Ly$α$-emitting galaxies), and an effective Ly$α$ emitter duty cycle of $f_\mathrm{LAE} = 0.1$. Thus the HERA-Roman cross-power spectrum may be used to help verify 21 cm detections from HERA. We find that the shot-noise in the galaxy distribution is a limiting factor for detection, and so supplemental observations using Roman should prioritize deeper observations, rather than covering a wider field of view.
Cosmology Constraints from Type Ia Supernova Simulations of the Nancy Grace Roman Space Telescope Strategy Recommended by the High Latitude Time Domain Survey Definition Committee
University of Chicago(芝加哥大学);University of Maryland, Baltimore County(马里兰大学巴尔的摩分校);NASA Goddard Space Flight Center(美国国家航空航天局戈达德太空飞行中心);Johns Hopkins University(约翰斯·霍普金斯大学);University of Hawai'i at Manoa(夏威夷大学马诺阿分校);Lawrence Berkeley National Laboratory(劳伦斯伯克利国家实验室);University of Pennsylvania(宾夕法尼亚大学);Duke University(杜克大学);Stony Brook University(石溪大学);Baylor University(贝勒大学)
IRMaGiC: Extending Luminous Red Galaxy Selection into the Infrared with Joint Rubin Observatory's Large Survey of Space Time and Roman's High Latitude Imaging Survey
Duke University(杜克大学);SLAC National Accelerator Laboratory(斯坦福直线加速器中心);Stanford University(斯坦福大学)
Characterizing the Roman Grism Redshift Efficiency of Type Ia Supernova Host Galaxies for the High-Latitude Time-Domain Survey
Duke University(杜克大学);Johns Hopkins University(约翰斯·霍普金斯大学);University of Chicago(芝加哥大学);Institute of Space Sciences (ICE-CSIC)(空间科学研究所(ICE-CSIC));University of Maryland, Baltimore County(马里兰大学巴尔的摩分校);NASA Goddard Space Flight Center(美国宇航局戈达德太空飞行中心);NC Central University(北卡罗来纳中央大学);Baylor University(贝勒大学);University of Hawai'i at Manoa(夏威夷大学马诺阿分校);Lawrence Berkeley National Laboratory(劳伦斯伯克利国家实验室)
Diffusion-based Galaxy Simulations for the Roman High Latitude Survey
Jet Propulsion Laboratory, California Institute of Technology(加州理工学院喷气推进实验室);Duke University(杜克大学);Department of Physics, California Institute of Technology(加州理工学院物理系);IPAC, Caltech(加州理工学院红外科学数据中心)
Robust Photometry for Roman High-Latitude Imaging Survey Cosmology Using Roman and Rubin Imaging
The University of Chicago(芝加哥大学);Kavli Institute for Cosmological Physics, University of Chicago(芝加哥大学卡弗里宇宙物理学研究所);McWilliams Center for Cosmology and Astrophysics, Department of Physics, Carnegie Mellon University(卡内基梅隆大学物理学院麦克威廉斯宇宙学与天体物理学中心);Center for Cosmology and AstroParticle Physics (CCAPP), The Ohio State University(俄亥俄州立大学宇宙学与高能粒子物理中心);Department of Astronomy, The Ohio State University(俄亥俄州立大学天文学系);Department of Physics, The Ohio State University(俄亥俄州立大学物理系);Department of Physics and Astronomy, University of Pittsburgh(匹兹堡大学物理与天文学系);Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh(匹兹堡大学匹兹堡粒子物理、天体物理与宇宙学中心);NASA Goddard Space Flight Center(美国宇航局戈达德太空飞行中心)
Clustering in the Simulated H$α$ Galaxy Redshift Survey from Nancy Grace Roman Space Telescope
我们提出了一个现实的2000度$^{2}$ H $α$星系模拟目录与$1<z<2$的南希格雷斯罗马空间望远镜星系红移调查,高纬度光谱调查(HLSS),创建使用Galacticus,半解析星系形成模型,和高分辨率宇宙学N体模拟。星系成团可以通过测量重子声学振荡(BAO)和红移空间畸变(RSD)来探测暗能量和检验引力。使用我们的现实模拟的模拟罗马HLSS数据,协方差矩阵计算使用EZmock创建的一个大的近似模拟集,我们调查的预期精度和准确度的BAO和RSD测量使用相同的分析技术用于分析真实数据。我们发现,在四个红移区间中,仅Roman H $α$星系巡天就可以测量角直径距离,其不确定度为2%,哈勃参数的不确定度为3- 6%,线性增长参数的不确定度为7%.我们现实的预测说明了罗马星系巡天在探测暗能量的性质和测试引力方面的力量。
Roman CCS White Paper: Tracing stellar mass assembly and emerging quiescence at cosmic noon -- the case for deep imaging with all of Roman's wide filters in the HLTDS
本文论证了在 Roman 望远镜 HLTDS 中使用除 F146 外所有宽滤光片进行深度成像的必要性,以推动河外深场科学并改进 SN Ia 宇宙学系统学。
Modeling Redshift Uncertainties in Roman Weak Lensing Cosmology
Jet Propulsion Laboratory, California Institute of Technology(加州理工学院喷气推进实验室);Duke University(杜克大学);University of Arizona(亚利桑那大学);Stony Brook University(石溪大学);University of Chicago(芝加哥大学);University of Pittsburgh(匹兹堡大学)
Accurate modeling for 3$\times$2pt analyses in Roman and Rubin: a study of model approximations
University of Chicago(芝加哥大学);Northeastern University(东北大学);Stony Brook University(石溪大学);University of Arizona(亚利桑那大学);The Ohio State University(俄亥俄州立大学)
A Joint Roman Space Telescope and Rubin Observatory Synthetic Wide-Field Imaging Survey
我们提出并验证了20度$^2$的重叠合成成像调查,代表了南希格雷斯罗马空间望远镜高纬度成像调查(HLIS)的全深度和五年的观察维拉C。Rubin Observatory Legacy Survey of Space and Time(鲁宾天文台时空遗产巡天)这两个综合调查进行了总结,参考现有的300度$^2$的LSST模拟成像的一部分,暗能量科学合作(DESC)数据挑战2(DC 2)。这两次合成巡天观测到的是同一个模拟的DESC DC 2宇宙。对于合成罗马调查,我们首次模拟了全彩色图像以及使用飞行探测器从实验室测量中获得的传感器芯片组件的详细物理特性。模拟成像和所得到的物体光度特性的像素级测量跨越$\sim$ 0.3至2.0 $μ$ m的波长范围。我们还描述了罗马模拟管道的更新,相对于原始DC 2模拟的天体物理对象模拟方式的变化,以及由此产生的模拟罗马数据产品。我们使用这些模拟来探索LSST图像中未识别的混合物的相对比例,发现在LSST图像中识别的$i$波段亮度大于25的对象中有20-30%可以被识别为罗马图像中的多个对象。这些模拟为2020年代后半期开发和验证地基和天基成像数据集的像素级联合分析技术-特别是Roman-LSST联合分析-提供了一个独特的试验场。
Linear Image Regridding and Coaddition with Oversampled Point Spread Functions: Lessons from 1D
Center for Cosmology and AstroParticle Physics (CCAPP), The Ohio State University(俄亥俄州立大学宇宙学与粒子物理中心);Department of Physics, The Ohio State University(俄亥俄州立大学物理系)
OpenUniverse2024: A shared, simulated view of the sky for the next generation of cosmological surveys
Institute of Space Sciences (ICE, CSIC)(空间科学研究所);Duke University(杜克大学);Argonne National Laboratory(阿贡国家实验室);University of Texas, Dallas(德克萨斯大学达拉斯分校);Northeastern University(东北大学);SLAC National Accelerator Laboratory(SLAC国家加速器实验室);ETH Zurich(苏黎世联邦理工学院);Ohio State University(俄亥俄州立大学);Institute for Theoretical Physics, Utrecht University(乌得勒支大学理论物理研究所);IPAC, California Institute of Technology(加州理工学院IPAC);Institut d’Estudis Espacials de Catalunya (IEEC)(加泰罗尼亚空间研究研究所);University of Maryland, Baltimore County(马里兰大学巴尔的摩县分校);NASA Goddard Space Flight Center(NASA戈达德太空飞行中心);University of Pennsylvania(宾夕法尼亚大学);Kavli Institute for Cosmological Physics, University of Chicago(芝加哥大学卡弗里宇宙物理研究所);NASA Jet Propulsion Laboratory(NASA喷气推进实验室);Lawrence Berkeley National Laboratory(劳伦斯伯克利国家实验室);Universidade Federal do Rio de Janeiro(里约热内卢联邦大学);Carnegie Mellon University(卡内基梅隆大学);Stanford University(斯坦福大学);University of Pittsburgh(匹兹堡大学);Department of Physics and Astronomy, Baylor University(贝勒大学物理与天文系);Centro Brasileiro de Pesquisas Físicas(巴西物理研究中心);Newcastle University(纽卡斯尔大学);Caltech Optical Observatories, California Institute of Technology(加州理工学院卡尔光学观测站)
LIMFAST. V. Probing Reionization with the Synergy Between 21 cm and Photometric Galaxy Surveys
Northwestern University(西北大学);University of Pennsylvania(宾夕法尼亚大学);California Institute of Technology(加州理工学院);Jet Propulsion Laboratory, California Institute of Technology(加州理工学院喷气推进实验室);University of California, Los Angeles(加利福尼亚大学洛杉矶分校)
Stacking 21-cm Maps around Lyman-$α$ Emitters during Reionization: Prospects for a Cross-correlation Detection with the Hydrogen Epoch of Reionization Array