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pro vyhledávání: '"Gebhardt, Henry S. Grasshorn"'
The three-dimensional galaxy power spectrum is a powerful probe of primordial non-Gaussianity and additional general relativistic (GR) effects on large scales, which can be constrained by the current and upcoming large-scale structure surveys. In thi
Externí odkaz:
http://arxiv.org/abs/2407.02753
The three-dimensional galaxy power spectrum is a powerful probe of primordial non-Gaussianity and additional general relativistic effects, which become important on large scales. At the same time, wide-angle (WA) effects due to differing lines-of-sig
Externí odkaz:
http://arxiv.org/abs/2404.04812
Autor:
Benabou, Joshua N., Sands, Isabel, Gebhardt, Henry S. Grasshorn, Heinrich, Chen, Doré, Olivier
As galaxy redshift surveys expand to larger areas on the sky, effects coming from the curved nature of the sky become important, introducing wide-angle (WA) corrections to the power spectrum multipoles at large galaxy-pair separations. These correcti
Externí odkaz:
http://arxiv.org/abs/2404.04811
Autor:
Benabou, Joshua N., Testa, Adriano, Heinrich, Chen, Gebhardt, Henry S. Grasshorn, Doré, Olivier
The bispectrum, the three-point correlation in Fourier space, is a crucial statistic for studying many effects targeted by the next-generation galaxy surveys, such as primordial non-Gaussianity (PNG) and general relativistic (GR) effects on large sca
Externí odkaz:
http://arxiv.org/abs/2312.15992
On-going or soon to come cosmological large-scale structure surveys such as DESI, SPHEREx, Euclid, or the High-Latitude Spectroscopic Survey of the Nancy Grace Roman Space Telescope promise unprecedented measurement of the clustering of galaxies on l
Externí odkaz:
http://arxiv.org/abs/2212.05760
Obtaining constraints from the largest scales of a galaxy survey is challenging due to the survey mask allowing only partial measurement of large angular modes. This scatters information from the harmonic-space 2-point function away from the diagonal
Externí odkaz:
http://arxiv.org/abs/2109.13352
Autor:
Farrow, Daniel J., Sánchez, Ariel G., Ciardullo, Robin, Cooper, Erin Mentuch, Davis, Dustin, Fabricius, Maximilian, Gawiser, Eric, Gebhardt, Henry S. Grasshorn, Gebhardt, Karl, Hill, Gary J., Jeong, Donghui, Komatsu, Eiichiro, Landriau, Martin, Liu, Chenxu, Saito, Shun, Snigula, Jan, Wold, Isak G. B.
The construction of catalogues of a particular type of galaxy can be complicated by interlopers contaminating the sample. In spectroscopic galaxy surveys this can be due to the misclassification of an emission line; for example in the Hobby-Eberly Te
Externí odkaz:
http://arxiv.org/abs/2104.04613
The spherical Fourier-Bessel (SFB) decomposition is a natural choice for the radial/angular separation that allows extraction of cosmological information from large volume galaxy surveys, taking into account all wide-angle effects. In this paper we d
Externí odkaz:
http://arxiv.org/abs/2102.10079
Publikováno v:
Phys. Rev. D 102, 083521 (2020)
Future high spectroscopic resolution galaxy surveys will observe galaxies with nearly full-sky footprints. Modeling the galaxy clustering for these surveys, therefore, must include the wide-angle effect with narrow redshift binning. In particular, wh
Externí odkaz:
http://arxiv.org/abs/2008.08706
Publikováno v:
Phys. Rev. D 101, 103528 (2020)
We present a fast implementation of the next-to-leading order (1-loop) redshift-space galaxy power spectrum by using FFTlog-based methods. [V. Desjacques, D. Jeong, and F. Schmidt, JCAP 1812 (12), 035] have shown that the 1-loop galaxy power spectrum
Externí odkaz:
http://arxiv.org/abs/2004.03629