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Cosmology from Cross-Correlation of ACT-DR4 CMB Lensing and DES-Y3 Cosmic Shear

Fuente: arXiv

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Auteurs principaux:	Shaikh, S., Harrison, I., van Engelen, A., Marques, G. A., Abbott, T. M. C., Aguena, M., Alves, O., Amon, A., An, R., Bacon, D., Battaglia, N., Becker, M. R., Bernstein, G. M., Bertin, E., Blazek, J., Bond, J. R., Brooks, D., Burke, D. L., Calabrese, E., Rosell, A. Carnero, Carretero, J., Cawthon, R., Chang, C., Chen, R., Choi, A., Choi, S. K., da Costa, L. N., Pereira, M. E. S., Darwish, O., Davis, T. M., Desai, S., Devlin, M., Diehl, H. T., Doel, P., Doux, C., Elvin-Poole, J., Farren, G. S., Ferraro, S., Ferrero, I., Ferté, A., Flaugher, B., Frieman, J., Gatti, M., Giannini, G., Giardiello, S., Gruen, D., Gruendl, R. A., Gutierrez, G., Hill, J. C., Hinton, S. R., Hollowood, D. L., Honscheid, K., Huffenberger, K. M., Huterer, D., James, D. J., Jarvis, M., Jeffrey, N., Jense, H. T., Knowles, K., Kim, J., Kramer, D., Lahav, O., Lee, S., Lima, M., MacCrann, N., Madhavacheril, M. S., Marshall, J. L., McCullough, J., Mehta, Y., Mena-Fernández, J., Miquel, R., Mohr, J. J., Moodley, K., Myles, J., Navarro-Alsina, A., Newburgh, L., Niemack, M. D., Omori, Y., Pandey, S., Partridge, B., Pieres, A., Malagón, A. A. Plazas, Porredon, A., Prat, J., Qu, F. J., Robertson, N., Rollins, R. P., Roodman, A., Samuroff, S., Sánchez, C., Sanchez, E., Cid, D. Sanchez, Secco, L. F., Sehgal, N., Sheldon, E., Sherwin, B. D., Shin, T., Smith, C. Sifón M., Suchyta, E., Swanson, M. E. C., Tarle, G., Troxel, M. A., Tutusaus, I., Vargas, C., Weaverdyck, N., Wiseman, P., Yamamoto, M., Zuntz, J.
Format:	Preprint
Publié:	2023
Sujets:	Cosmology and Nongalactic Astrophysics
Accès en ligne:	Acceder al recurso
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_version_	1866910604855345152
author	Shaikh, S. Harrison, I. van Engelen, A. Marques, G. A. Abbott, T. M. C. Aguena, M. Alves, O. Amon, A. An, R. Bacon, D. Battaglia, N. Becker, M. R. Bernstein, G. M. Bertin, E. Blazek, J. Bond, J. R. Brooks, D. Burke, D. L. Calabrese, E. Rosell, A. Carnero Carretero, J. Cawthon, R. Chang, C. Chen, R. Choi, A. Choi, S. K. da Costa, L. N. Pereira, M. E. S. Darwish, O. Davis, T. M. Desai, S. Devlin, M. Diehl, H. T. Doel, P. Doux, C. Elvin-Poole, J. Farren, G. S. Ferraro, S. Ferrero, I. Ferté, A. Flaugher, B. Frieman, J. Gatti, M. Giannini, G. Giardiello, S. Gruen, D. Gruendl, R. A. Gutierrez, G. Hill, J. C. Hinton, S. R. Hollowood, D. L. Honscheid, K. Huffenberger, K. M. Huterer, D. James, D. J. Jarvis, M. Jeffrey, N. Jense, H. T. Knowles, K. Kim, J. Kramer, D. Lahav, O. Lee, S. Lima, M. MacCrann, N. Madhavacheril, M. S. Marshall, J. L. McCullough, J. Mehta, Y. Mena-Fernández, J. Miquel, R. Mohr, J. J. Moodley, K. Myles, J. Navarro-Alsina, A. Newburgh, L. Niemack, M. D. Omori, Y. Pandey, S. Partridge, B. Pieres, A. Malagón, A. A. Plazas Porredon, A. Prat, J. Qu, F. J. Robertson, N. Rollins, R. P. Roodman, A. Samuroff, S. Sánchez, C. Sanchez, E. Cid, D. Sanchez Secco, L. F. Sehgal, N. Sheldon, E. Sherwin, B. D. Shin, T. Smith, C. Sifón M. Suchyta, E. Swanson, M. E. C. Tarle, G. Troxel, M. A. Tutusaus, I. Vargas, C. Weaverdyck, N. Wiseman, P. Yamamoto, M. Zuntz, J.
author_facet	Shaikh, S. Harrison, I. van Engelen, A. Marques, G. A. Abbott, T. M. C. Aguena, M. Alves, O. Amon, A. An, R. Bacon, D. Battaglia, N. Becker, M. R. Bernstein, G. M. Bertin, E. Blazek, J. Bond, J. R. Brooks, D. Burke, D. L. Calabrese, E. Rosell, A. Carnero Carretero, J. Cawthon, R. Chang, C. Chen, R. Choi, A. Choi, S. K. da Costa, L. N. Pereira, M. E. S. Darwish, O. Davis, T. M. Desai, S. Devlin, M. Diehl, H. T. Doel, P. Doux, C. Elvin-Poole, J. Farren, G. S. Ferraro, S. Ferrero, I. Ferté, A. Flaugher, B. Frieman, J. Gatti, M. Giannini, G. Giardiello, S. Gruen, D. Gruendl, R. A. Gutierrez, G. Hill, J. C. Hinton, S. R. Hollowood, D. L. Honscheid, K. Huffenberger, K. M. Huterer, D. James, D. J. Jarvis, M. Jeffrey, N. Jense, H. T. Knowles, K. Kim, J. Kramer, D. Lahav, O. Lee, S. Lima, M. MacCrann, N. Madhavacheril, M. S. Marshall, J. L. McCullough, J. Mehta, Y. Mena-Fernández, J. Miquel, R. Mohr, J. J. Moodley, K. Myles, J. Navarro-Alsina, A. Newburgh, L. Niemack, M. D. Omori, Y. Pandey, S. Partridge, B. Pieres, A. Malagón, A. A. Plazas Porredon, A. Prat, J. Qu, F. J. Robertson, N. Rollins, R. P. Roodman, A. Samuroff, S. Sánchez, C. Sanchez, E. Cid, D. Sanchez Secco, L. F. Sehgal, N. Sheldon, E. Sherwin, B. D. Shin, T. Smith, C. Sifón M. Suchyta, E. Swanson, M. E. C. Tarle, G. Troxel, M. A. Tutusaus, I. Vargas, C. Weaverdyck, N. Wiseman, P. Yamamoto, M. Zuntz, J.
contents	Cross-correlation between weak lensing of the Cosmic Microwave Background (CMB) and weak lensing of galaxies offers a way to place robust constraints on cosmological and astrophysical parameters with reduced sensitivity to certain systematic effects affecting individual surveys. We measure the angular cross-power spectrum between the Atacama Cosmology Telescope (ACT) DR4 CMB lensing and the galaxy weak lensing measured by the Dark Energy Survey (DES) Y3 data. Our baseline analysis uses the CMB convergence map derived from ACT-DR4 and $\textit{Planck}$ data, where most of the contamination due to the thermal Sunyaev Zel'dovich effect is removed, thus avoiding important systematics in the cross-correlation. In our modelling, we consider the nuisance parameters of the photometric uncertainty, multiplicative shear bias and intrinsic alignment of galaxies. The resulting cross-power spectrum has a signal-to-noise ratio $= 7.1$ and passes a set of null tests. We use it to infer the amplitude of the fluctuations in the matter distribution ($S_8 \equiv σ_8 (Ω_{\rm m}/0.3)^{0.5} = 0.782\pm 0.059$) with informative but well-motivated priors on the nuisance parameters. We also investigate the validity of these priors by significantly relaxing them and checking the consistency of the resulting posteriors, finding them consistent, albeit only with relatively weak constraints. This cross-correlation measurement will improve significantly with the new ACT-DR6 lensing map and form a key component of the joint 6x2pt analysis between DES and ACT.
format	Preprint
id	arxiv_https___arxiv_org_abs_2309_04412
institution	arXiv
publishDate	2023
record_format	arxiv
spellingShingle	Cosmology from Cross-Correlation of ACT-DR4 CMB Lensing and DES-Y3 Cosmic Shear Shaikh, S. Harrison, I. van Engelen, A. Marques, G. A. Abbott, T. M. C. Aguena, M. Alves, O. Amon, A. An, R. Bacon, D. Battaglia, N. Becker, M. R. Bernstein, G. M. Bertin, E. Blazek, J. Bond, J. R. Brooks, D. Burke, D. L. Calabrese, E. Rosell, A. Carnero Carretero, J. Cawthon, R. Chang, C. Chen, R. Choi, A. Choi, S. K. da Costa, L. N. Pereira, M. E. S. Darwish, O. Davis, T. M. Desai, S. Devlin, M. Diehl, H. T. Doel, P. Doux, C. Elvin-Poole, J. Farren, G. S. Ferraro, S. Ferrero, I. Ferté, A. Flaugher, B. Frieman, J. Gatti, M. Giannini, G. Giardiello, S. Gruen, D. Gruendl, R. A. Gutierrez, G. Hill, J. C. Hinton, S. R. Hollowood, D. L. Honscheid, K. Huffenberger, K. M. Huterer, D. James, D. J. Jarvis, M. Jeffrey, N. Jense, H. T. Knowles, K. Kim, J. Kramer, D. Lahav, O. Lee, S. Lima, M. MacCrann, N. Madhavacheril, M. S. Marshall, J. L. McCullough, J. Mehta, Y. Mena-Fernández, J. Miquel, R. Mohr, J. J. Moodley, K. Myles, J. Navarro-Alsina, A. Newburgh, L. Niemack, M. D. Omori, Y. Pandey, S. Partridge, B. Pieres, A. Malagón, A. A. Plazas Porredon, A. Prat, J. Qu, F. J. Robertson, N. Rollins, R. P. Roodman, A. Samuroff, S. Sánchez, C. Sanchez, E. Cid, D. Sanchez Secco, L. F. Sehgal, N. Sheldon, E. Sherwin, B. D. Shin, T. Smith, C. Sifón M. Suchyta, E. Swanson, M. E. C. Tarle, G. Troxel, M. A. Tutusaus, I. Vargas, C. Weaverdyck, N. Wiseman, P. Yamamoto, M. Zuntz, J. Cosmology and Nongalactic Astrophysics Cross-correlation between weak lensing of the Cosmic Microwave Background (CMB) and weak lensing of galaxies offers a way to place robust constraints on cosmological and astrophysical parameters with reduced sensitivity to certain systematic effects affecting individual surveys. We measure the angular cross-power spectrum between the Atacama Cosmology Telescope (ACT) DR4 CMB lensing and the galaxy weak lensing measured by the Dark Energy Survey (DES) Y3 data. Our baseline analysis uses the CMB convergence map derived from ACT-DR4 and $\textit{Planck}$ data, where most of the contamination due to the thermal Sunyaev Zel'dovich effect is removed, thus avoiding important systematics in the cross-correlation. In our modelling, we consider the nuisance parameters of the photometric uncertainty, multiplicative shear bias and intrinsic alignment of galaxies. The resulting cross-power spectrum has a signal-to-noise ratio $= 7.1$ and passes a set of null tests. We use it to infer the amplitude of the fluctuations in the matter distribution ($S_8 \equiv σ_8 (Ω_{\rm m}/0.3)^{0.5} = 0.782\pm 0.059$) with informative but well-motivated priors on the nuisance parameters. We also investigate the validity of these priors by significantly relaxing them and checking the consistency of the resulting posteriors, finding them consistent, albeit only with relatively weak constraints. This cross-correlation measurement will improve significantly with the new ACT-DR6 lensing map and form a key component of the joint 6x2pt analysis between DES and ACT.
title	Cosmology from Cross-Correlation of ACT-DR4 CMB Lensing and DES-Y3 Cosmic Shear
topic	Cosmology and Nongalactic Astrophysics
url	https://arxiv.org/abs/2309.04412