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arXiv 1602.07384astro-ph.CO
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用SPT和DES SV数据联合测量透镜-星系相关

Joint Measurement of Lensing-Galaxy Correlations Using SPT and DES SV Data

E. J. Baxter, J. Clampitt, T. Giannantonio, S. Dodelson, B. Jain, D. Huterer, L. E. Bleem, T. M. Crawford, G. Efstathiou, P. Fosalba, D. Kirk, J. Kwan, C. Sánch… 展开作者

E. J. Baxter, J. Clampitt, T. Giannantonio, S. Dodelson, B. Jain, D. Huterer, L. E. Bleem, T. M. Crawford, G. Efstathiou, P. Fosalba, D. Kirk, J. Kwan, C. Sánchez, K. T. Story, M. A. Troxel, T. M. C. Abbott, F. B. Abdalla, R. Armstrong, A. Benoit-Lévy, B. A. Benson, G. M. Bernstein, R. A. Bernstein, E. Bertin, D. Brooks, J. E. Carlstrom, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, R. Chown, M. Crocce, C. E. Cunha, C. B. D'Andrea, L. N. da Costa, S. Desai, H. T. Diehl, J. P. Dietrich, P. Doel, A. E. Evrard, A. Fausti Neto, B. Flaugher, J. Frieman, D. Gruen, R. A. Gruendl, G. Gutierrez, T. de Haan, G. P. Holder, K. Honscheid, Z. Hou, D. J. James, K. Kuehn, N. Kuropatkin, M. Lima, M. March, J. L. Marshall, P. Martini, P. Melchior, C. J. Miller, R. Miquel, J. J. Mohr, B. Nord, Y. Omori, A. A. Plazas, C. L. Reichardt, A. K. Romer, E. S. Rykoff, E. Sanchez, I. Sevilla-Noarbe, E. Sheldon, R. C. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, A. A. Stark, M. E. C. Swanson, G. Tarle, D. Thomas, A. R. Walker, R. H. Wechsler

摘要:

我们测量了星系透镜和宇宙微波背景透镜与一组星系的相关性,希望跟踪物质密度场。测量是使用预调查暗能量调查(DES)科学验证光学成像数据和毫米波数据从2500平方度南极望远镜Sunyaev-Zel'dovich(SPT-SZ)调查。这两个透镜星系的相关性共同适合提取约束宇宙学参数,约束的红移分布的透镜星系,和约束的DES星系透镜测量的绝对剪切校准。我们表明,这些适合的一个有吸引力的特点是,他们是相当不敏感的星系作为物质示踪剂的集群偏差。在这项工作中提出的测量证实,DES和SPT数据是相互一致的,目前青睐的$Λ$ CDM宇宙学模型。它还表明,这里考虑的联合透镜星系相关测量包含了丰富的信息,可以使用当前和未来的调查提取。

英文摘要:

We measure the correlation of galaxy lensing and cosmic microwave background lensing with a set of galaxies expected to trace the matter density field. The measurements are performed using pre-survey Dark Energy Survey (DES) Science Verification optical imaging data and millimeter-wave data from the 2500 square degree South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey. The two lensing-galaxy correlations are jointly fit to extract constraints on cosmological parameters, constraints on the redshift distribution of the lens galaxies, and constraints on the absolute shear calibration of DES galaxy lensing measurements. We show that an attractive feature of these fits is that they are fairly insensitive to the clustering bias of the galaxies used as matter tracers. The measurement presented in this work confirms that DES and SPT data are consistent with each other and with the currently favored $Λ$CDM cosmological model. It also demonstrates that joint lensing-galaxy correlation measurement considered here contains a wealth of information that can be extracted using current and future surveys.

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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