Intrinsic alignments in the cross-correlation of cosmic shear and CMB weak lensing
作者： Alex Hall , Andy Taylor
关键词:
摘要: We demonstrate that the intrinsic alignment of galaxies with large-scale tidal fields sources an extra contribution to recently-detected cross-correlation galaxy shear and weak lensing microwave background. The term is analogy 'GI' in standard cosmic studies, results a reduction amplitude cross-correlation. compute linear non-linear theory, show it can be at roughly 15% level for CFHT Stripe 82 redshift distribution, if canonical alignments assumed. new therefore potentially reconcile apparently low value measured LCDM. discuss various small-scale effects signal dependence on source distribution. exciting possibility self-calibrating joint analysis background
arxiv.org 
sci-hub.st 参考文章(27)
Takemi Okamoto, Wayne Hu, Cosmic microwave background lensing reconstruction on the full sky Physical Review D. ,vol. 67, pp. 083002- ,(2003) , 10.1103/PHYSREVD.67.083002
Donnacha Kirk, Anais Rassat, Ole Host, Sarah Bridle, The cosmological impact of intrinsic alignment model choice for cosmic shear Monthly Notices of the Royal Astronomical Society. ,vol. 424, pp. 1647- 1657 ,(2012) , 10.1111/J.1365-2966.2012.21099.X
Philipp M. Merkel, Björn Malte Schäfer, Björn Malte Schäfer, Björn Malte Schäfer, Galactic angular momenta and angular momentum couplings in the large-scale structure Monthly Notices of the Royal Astronomical Society. ,vol. 421, pp. 2751- 2762 ,(2012) , 10.1111/J.1365-2966.2011.20224.X
Anthony Challinor, Antony Lewis, Anthony Lasenby, Efficient computation of CMB anisotropies in closed FRW models The Astrophysical Journal. ,vol. 538, pp. 473- 476 ,(2000) , 10.1086/309179
A LEWIS, A CHALLINOR, Weak gravitational lensing of the CMB Physics Reports. ,vol. 429, pp. 1- 65 ,(2006) , 10.1016/J.PHYSREP.2006.03.002
Christopher M. Hirata, Uroš Seljak, Intrinsic alignment-lensing interference as a contaminant of cosmic shear Physical Review D. ,vol. 70, pp. 063526- ,(2004) , 10.1103/PHYSREVD.70.063526
J. Anthony Tyson, Stefan Hilbert, Stefan Hilbert, Samuel Schmidt, M. James Jee, Michael D. Schneider, Michael D. Schneider, David Wittman, Cosmic shear results from the deep lens survey - I: Joint constraints on omega_m and sigma_8 with a two-dimensional analysis The Astrophysical Journal. ,vol. 765, pp. 74- ,(2013) , 10.1088/0004-637X/765/1/74
Uros̆ Seljak, Matias Zaldarriaga, Signature of Gravity Waves in the Polarization of the Microwave Background Physical Review Letters. ,vol. 78, pp. 2054- 2057 ,(1997) , 10.1103/PHYSREVLETT.78.2054
Sarah Bridle, Lindsay King, Dark energy constraints from cosmic shear power spectra: impact of intrinsic alignments on photometric redshift requirements New Journal of Physics. ,vol. 9, pp. 444- 444 ,(2007) , 10.1088/1367-2630/9/12/444
Laura Marian, Gary M. Bernstein, Detectability of CMB tensor B modes via delensing with weak lensing galaxy surveys Physical Review D. ,vol. 76, pp. 123009- ,(2007) , 10.1103/PHYSREVD.76.123009