Improving Cosmological Constraints from Galaxy Cluster Number Counts with CMB-cluster-lensing Data: Results from the SPT-SZ Survey and Forecasts for the Future
| Autor: | P. S. Chaubal, C. L. Reichardt, N. Gupta, B. Ansarinejad, K. Aylor, L. Balkenhol, E. J. Baxter, F. Bianchini, B. A. Benson, L. E. Bleem, S. Bocquet, J. E. Carlstrom, C. L. Chang, T. M. Crawford, A. T. Crites, T. de Haan, M. A. Dobbs, W. B. Everett, B. Floyd, E. M. George, N. W. Halverson, W. L. Holzapfel, J. D. Hrubes, L. Knox, A. T. Lee, D. Luong-Van, J. J. McMahon, S. S. Meyer, L. M. Mocanu, J. J. Mohr, T. Natoli, S. Padin, C. Pryke, J. E. Ruhl, F. Ruppin, L. Salvati, A. Saro, K. K. Schaffer, E. Shirokoff, Z. Staniszewski, A. A. Stark, J. D. Vieira, R. Williamson |
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| Přispěvatelé: | Chaubal, P. S., Reichardt, C. L., Gupta, N., Ansarinejad, B., Aylor, K., Balkenhol, L., Baxter, E. J., Bianchini, F., Benson, B. A., Bleem, L. E., Bocquet, S., Carlstrom, J. E., Chang, C. L., Crawford, T. M., Crites, A. T., de Haan, T., Dobbs, M. A., Everett, W. B., Floyd, B., George, E. M., Halverson, N. W., Holzapfel, W. L., Hrubes, J. D., Knox, L., Lee, A. T., Luong-Van, D., Mcmahon, J. J., Meyer, S. S., Mocanu, L. M., Mohr, J. J., Natoli, T., Padin, S., Pryke, C., Ruhl, J. E., Ruppin, F., Salvati, L., Saro, A., Schaffer, K. K., Shirokoff, E., Staniszewski, Z., Stark, A. A., Vieira, J. D., Williamson, R. |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Space and Planetary Science Astrophysics::Instrumentation and Methods for Astrophysics FOS: Physical sciences Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics cosmology Astrophysics - Cosmology and Nongalactic Astrophysics |
| Popis: | We show the improvement to cosmological constraints from galaxy cluster surveys with the addition of CMB-cluster lensing data. We explore the cosmological implications of adding mass information from the 3.1$\sigma$ detection of gravitational lensing of the cosmic microwave background (CMB) by galaxy clusters to the Sunyaev-Zel'dovich (SZ) selected galaxy cluster sample from the 2500 deg$^2$ SPT-SZ survey and targeted optical and X-ray followup data. In the $\Lambda$CDM model, the combination of the cluster sample with the Planck power spectrum measurements prefers $\sigma_8 \left(\Omega_m/0.3 \right)^{0.5} = 0.831 \pm 0.020$. Adding the cluster data reduces the uncertainty on this quantity by a factor of 1.4, which is unchanged whether or not the 3.1$\sigma$ CMB-cluster lensing measurement is included. We then forecast the impact of CMB-cluster lensing measurements with future cluster catalogs. Adding CMB-cluster lensing measurements to the SZ cluster catalog of the on-going SPT-3G survey is expected to improve the expected constraint on the dark energy equation of state $w$ by a factor of 1.3 to $\sigma(w) = 0.19$. We find the largest improvements from CMB-cluster lensing measurements to be for $\sigma_8$, where adding CMB-cluster lensing data to the cluster number counts reduces the expected uncertainty on $\sigma_8$ by factors of 2.4 and 3.6 for SPT-3G and CMB-S4 respectively. Comment: Comments are welcome |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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