Proposed Next-Generation Cosmological Surveys in Mainland 詹虎 中国科学院国家天文台
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Proposed Next-Generation Cosmological Surveys in Mainland 詹虎 中国科学院国家天文台. 海峡两岸粒子物理与宇宙学会议 新竹 2011.4.1—5. 暗能量探测手段. Ia 型超新星： 光度（相对）距离 弱引力透镜： 大尺度结构增长、角直径距离、物质功率谱 重子声波振荡： 角直径距离、哈勃参量 红移畸变： 大尺度结构增长率、速度场 星系团计数： 体积 / 距离、大尺度结构增长 强引力透镜： 哈勃常数、（时间延迟）距离 暗物质晕密度分布、暗物质粒子性质 距离、结构增长（率）、物质功率谱、速度场功率谱 - PowerPoint PPT Presentation
Transcript of Proposed Next-Generation Cosmological Surveys in Mainland 詹虎 中国科学院国家天文台
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2011.4.15
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Ia/
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Stage IStage IICFHTESSENCEStage IIISDSS-IIIDESPS4 Stage IV2015LSSTJDEMSKA
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~2020
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~2020
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Key Missions: Dark energy/matter Solar systemOptical transients Galactic map 8.4-meter primary 10 deg2 FOV 3 billion pixels 0.31.1 m ugrizy 15-s exposures 20,000 deg2 200 PB data u 25.8 mag (56 exp.) g 27.0 mag (80 exp.) r 27.2 mag (180 exp.) i 27.0 mag (180 exp.) z 25.7 mag (164 exp.) y 24.4 mag (164 exp.)
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7621cm21(1+zcm
21cm
02.5 4001400MHz)
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=
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Degradations due to shear errors are not bound (no self-calibration from WL itself). Zhan 2006
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mV~21.8 mag/arcsec2
6.8%9.7%22%22%20%20%25.827.027.227.025.724.4
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43156000 0.2-2.5m41000COSMOSzCOSMOS
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//
mdeg2deg2nm22 0.740.15 0.32.6300002001000 8002500612 3 LSST8.4100.73.22000032010506Euclid1.20.5 0.50.2 0.6120000550920 10002000 1 3 WFIRST1.50.1*0.20.12000010002000 3
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With 1% prior on galaxy bias!With 1% prior on galaxy bias!
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Topics
Background knowledgeTheoretical background Lensing basics Observational background
Weak lensingWL Theory CMB Dark energy, gravity, etc. Mass map Other applications Higher-order statistics Systematics
Strong lensingSL Theory Dark matter Dark energy Other topics
Survey/Data/AnalysisImage reduction Catalog generation Shear measurement Photo-zs Simulations Sample issues Statistical methods Practical issues Designing a survey2011 Summer School & Workshop on Gravitational LensingJuly 24 August 3, 2011Invited LecturersA. HeavensD. CloweD. WittmanG. BernsteinM. BartelmannM. TakadaP. MarshallT. TreuV. MargoninerWill soon start registration. Email: [email protected]
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http://www.icranet.org/
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***This is a simulation of the operations over 10 years.****
