Detection of universality of dark matter profile from Subaru weak lensing measurements of 50 massive clusters

Niikura Hiroko; Takada Masahiro; Okabe Nobuhiro; Martino Rossella; Takahashi Ryuichi

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Detection of universality of dark matter profile from Subaru weak lensing measurements of 50 massive clusters

机译：从50个大型星团的斯巴鲁弱透镜测量中检测暗物质分布的普遍性

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Wedevelopanovelmethodofmeasuringthelensingdistortionprofilesofclustersbystackingthea€?scaleda€?amplitudesofbackgroundgalaxyellipticitiesasafunctionofthea€?scaleda€?centricradiusaccordingtotheNavarroa€“Frenka€“White(NFW)predictionofeachcluster,basedontheassumptionthatthedifferentclustersinasamplefollowtheuniversalNFWprofile.FirstwedemonstratethefeasibilityofthismethodusingboththeanalyticalNFWmodelandsimulatedhalosinasuiteofhigh-resolutionN-bodysimulations.Wethenapply,asaproofofconcept,thismethodtotheSubaruweaklensingdataandtheXMM/ChandraX-rayobservablesforasampleof50massiveclustersintheredshiftrange0.15a€‰a‰¤a€‰za€‰a‰¤a€‰0.3,wheretheirhalomassesdifferfromeachotherbyuptoafactorof10.ToestimatetheNFWparametersofeachcluster,weusethehalomassproxyrelationofX-rayobservables,basedoneitherthehydrostaticequilibriumorthegasmass,andtheninferthehaloconcentrationfromthemodelscalingrelationofhaloconcentrationwithhalomass.WeevaluatetheperformanceoftheNFWscalinganalysisbymeasuringthescattersof50clusterlensingprofilesrelativetotheNFWpredictionsoverarangeofradii,0.14a€‰a‰¤a€‰R/[ha?’1a€‰Mpc]a€‰a‰¤a€‰2.8.Wefound4a€“6????-levelevidenceoftheuniversalNFWprofilein50clusters,forboththeX-rayhalomassproxyrelations,althoughthegasmassappearstobeabetterproxyoftheunderlyingtruemass.BycomparingthemeasurementswiththesimulationsofclusterlensingprofilestakingintoaccountthestatisticalerrorsofintrinsicgalaxyshapesintheSubarudata,wearguethatadditionalhalomasserrorsorintrinsicscattersof??(M500c)/M500ca??0.2a€“0.3couldreconcilethedifferencebetweenmeasurementsandsimulations.Thismethodallowsustosomeextenttopreservecharacteristicsofindividualclustersinthestatisticalweaklensinganalysis,therebyyieldinganewmeansofexploitingtheunderlyinggenuineformofthehalomassprofileandthehalomassproxyrelationsviaweaklensinginformation,undertheassumptionoftheexistenceoftheuniversalprofile.

机译：Wedevelopanovelmethodofmeasuringthelensingdistortionprofilesofclustersbystackingthea€？缩放€？Amplitudesofbackgroundgalaxyellipticitiesasafunctionofthea€？缩放€？CentricradiusaccordingtotheNavarroa€ “Frenka€” 白（NFW）predictionofeachcluster，basedontheassumptionthatthedifferentclustersinasamplefollowtheuniversalNFWprofile.FirstwedemonstratethefeasibilityofthismethodusingboththeanalyticalNFWmodelandsimulatedhalosinasuiteofhigh resolutionN bodysimulations.Wethenapply，asaproofofconcept，thismethodtotheSubaruweaklensingdataandtheXMM / ChandraX rayobservablesforasampleof50massiveclustersintheredshiftrange0.15a€‰一‰¤a€ ≥0.3，则它们之间的光晕差彼此相差最多10倍。为了估算每个簇的NFW参数，我们使用X射线可分解的水合力平衡值，通过对热量的比例计算，通过对C值的计算通过对C值的计算将热量的比例分配到了50。相对于半径范围的NWF预测的ensingprofiles，0.14a€‰a‰¤R / [ha？'1a€‰Mpc] a€‰‰a8。2.8.Wefound4a€“ 6 ???? .BycomparingthemeasurementswiththesimulationsofclusterlensingprofilestakingintoaccountthestatisticalerrorsofintrinsicgalaxyshapesintheSubarudata，wearguethatadditionalhalomasserrorsorintrinsicscattersof ??（M500c）/M500ca??0.2a€“0.3couldreconcilethedifferencebetweenmeasurementsandsimulations.Thismethodallowsustosomeextenttopreservecharacteristicsofindividualclustersinthestatisticalweaklensinganalysis，therebyyieldinganewmeansofexploitingtheunderlyinggenuineformofthehalomassprofileandthehalomassproxyrelationsviaweaklensinginformation，undertheassumptionoftheexistenceoftheuniversalprofile。

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《PASJ: Publications of the Astronomical Society of Japan》 |2015年第6期|共页
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Niikura Hiroko; Takada Masahiro; Okabe Nobuhiro; Martino Rossella; Takahashi Ryuichi;
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1. Detection of universality of dark matter profile from Subaru weak lensing measurements of 50 massive clusters [J] . Niikura Hiroko, Takada Masahiro, Okabe Nobuhiro, PASJ: Publications of the Astronomical Society of Japan . 2015,第6期

机译：从50个大型星团的斯巴鲁弱透镜测量中检测暗物质分布的普遍性
2. CLUSTER MASS PROFILES FROM A BAYESIAN ANALYSIS OF WEAK-LENSING DISTORTION AND MAGNIFICATION MEASUREMENTS: APPLICATIONS TO SUBARU DATA* [J] . Keiichi Umetsu1, Tom Broadhurst23, Adi Zitrin4, The Astrophysical journal . 2011,第2期

机译：贝叶斯分析的弱畸变和放大测量的集群质量概况：在斯巴鲁数据中的应用*
3. MC2: MAPPING THE DARK MATTER DISTRIBUTION OF THE “TOOTHBRUSH” CLUSTER RX J0603.3+4214 WITH HUBBLE SPACE TELESCOPE AND SUBARU WEAK LENSING* [J] . M. James Jee12, William A. Dawson3, Andra Stroe4, The Astrophysical journal . 2016,第2期

机译：MC2：映射“牙刷”群集RX J0603.3 + 4214的暗物质分布，并使用太空望远镜和斯巴鲁弱透镜*
4. Digging into Dark Matter with Weak Gravitational Lensing [C] . Richard Massey Snowbird Workshop on Particle Astrophysics, Astronomy, Cosmology . 2010

机译：用弱引力透镜挖掘暗物质
5. Applications of weak gravitational lensing: Constraining the dark matter in clusters and galaxies. [D] . Wright, Candace Oaxaca. 2002

机译：弱引力透镜的应用：限制星团和星系中的暗物质。
6. Gravitational lensing: a unique probe of dark matter and dark energy [O] . Richard S. Ellis -1

机译：引力透镜：暗物质和暗能量的独特探测器
7. Cluster Mass Profiles from a Bayesian Analysis of Weak Lensing Distortion and Magnification Measurements: Applications to Subaru Data [O] . Umetsu, Keiichi, Broadhurst, Tom, Zitrin, Adi, 2012

机译：弱传感的贝叶斯分析中的聚类质量分布失真和放大倍数测量：斯巴鲁数据的应用

Detection of universality of dark matter profile from Subaru weak lensing measurements of 50 massive clusters

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