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• W4323207637 abstract "Measurements of the growth rate of structures at $z < 0.1$ with peculiar velocity surveys have the potential of testing the validity of general relativity on cosmic scales. In this work, we present growth-rate measurements from realistic simulated sets of type-Ia supernovae (SNe Ia) from the Zwicky Transient Facility (ZTF). We describe our simulation methodology, the light-curve fitting and peculiar velocity estimation. Using the maximum likelihood method, we derive constraints on $fsigma_8$ using only ZTF SN Ia peculiar velocities. We carefully tested the method and we quantified biases due to selection effects (photometric detection, spectroscopic follow-up for typing) on several independent realizations. We simulated the equivalent of 6 years of ZTF data, and considering an unbiased spectroscopically typed sample at $z < 0.06$, we obtained unbiased estimates of $fsigma_8$ with an average uncertainty of 19% precision. We also investigated the information gain in applying bias correction methods. Our results validate our framework which can be used on real ZTF data." @default.
• W4323207637 created "2023-03-05" @default.
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• W4323207637 date "2023-03-02" @default.
• W4323207637 modified "2023-09-27" @default.
• W4323207637 title "Growth-rate measurement with type-Ia supernovae using ZTF survey simulations" @default.
• W4323207637 doi "https://doi.org/10.48550/arxiv.2303.01198" @default.
• W4323207637 hasPublicationYear "2023" @default.
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