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Growth-rate measure...
Growth-rate measurement with type-Ia supernovae using ZTF survey simulations
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Carreres, Bastien (author)
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Bautista, Julian E. (author)
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Feinstein, Fabrice (author)
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Fouchez, Dominique (author)
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Racine, Benjamin (author)
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Smith, Mathew (author)
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Amenouche, Mellissa (author)
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Aubert, Marie (author)
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Dhawan, Suhail (author)
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Ginolin, Madeleine (author)
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- Goobar, Ariel (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Gris, Philippe (author)
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- Lacroix, Leander (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Fysikum,Sorbonne Université, France
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Nuss, Eric (author)
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Regnault, Nicolas (author)
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Rigault, Mickael (author)
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Robert, Estelle (author)
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Rosnet, Philippe (author)
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Sommer, Kelian (author)
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Dekany, Richard (author)
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Groom, Steven L. (author)
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Sravan, Niharika (author)
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Masci, Frank J. (author)
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Purdum, Josiah (author)
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Astronomy and Astrophysics. - 0004-6361 .- 1432-0746. ; 674
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- 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 derived constraints on fσ8 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 fσ8 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- large-scale structure of Universe - cosmological parameters - supernovae
- general - gravitation
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Carreres, Bastie ...
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Bautista, Julian ...
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Feinstein, Fabri ...
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Fouchez, Dominiq ...
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Racine, Benjamin
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Smith, Mathew
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show more...
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Amenouche, Melli ...
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Aubert, Marie
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Dhawan, Suhail
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Ginolin, Madelei ...
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Goobar, Ariel
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Gris, Philippe
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Lacroix, Leander
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Nuss, Eric
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Regnault, Nicola ...
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Rigault, Mickael
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Robert, Estelle
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Rosnet, Philippe
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Sommer, Kelian
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Dekany, Richard
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Groom, Steven L.
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Sravan, Niharika
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Masci, Frank J.
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Purdum, Josiah
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show less...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Astronomy and As ...
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Stockholm University