Home > Research > Publications & Outputs > The dark energy survey: detection of weak lensi...

Research

Electronic data

  • pdf

    2.94 MB, PDF document

Links

Text available via DOI:

Keywords

View graph of relations

The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published

Standard

The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes. / Dark Energy Survey Collaboration.
In: Monthly Notices of the Royal Astronomical Society, Vol. 532, No. 1, 31.07.2024, p. 932-944.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Dark Energy Survey Collaboration 2024, 'The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes', Monthly Notices of the Royal Astronomical Society, vol. 532, no. 1, pp. 932-944. https://doi.org/10.1093/mnras/stae1515

APA

Dark Energy Survey Collaboration (2024). The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes. Monthly Notices of the Royal Astronomical Society, 532(1), 932-944. https://doi.org/10.1093/mnras/stae1515

Vancouver

Dark Energy Survey Collaboration. The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes. Monthly Notices of the Royal Astronomical Society. 2024 Jul 31;532(1):932-944. Epub 2024 Jun 18. doi: 10.1093/mnras/stae1515

Author

Dark Energy Survey Collaboration. / The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes. In: Monthly Notices of the Royal Astronomical Society. 2024 ; Vol. 532, No. 1. pp. 932-944.

Bibtex

@article{af2ba5c5f7294954a6adcd4ea39cb326,
title = "The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes",
abstract = "The residuals of the distance moduli of Type Ia supernovae (SN Ia) relative to a Hubble diagram fit contain information about the inhomogeneity of the universe, due to weak lensing magnification by foreground matter. By correlating the residuals of the Dark Energy Survey Year 5 SN Ia sample (DES-SN5YR) with extra-galactic foregrounds from the DES Y3 Gold catalog, we detect the presence of lensing at $6.0 \sigma$ significance. This is the first detection with a significance level above $5\sigma$. Constraints on the effective mass-to-light ratios and radial profiles of dark-matter haloes surrounding individual galaxies are also obtained. We show that the scatter of SNe Ia around the Hubble diagram is reduced by modifying the standardisation of the distance moduli to include an easily calculable de-lensing (i.e., environmental) term. We use the de-lensed distance moduli to recompute cosmological parameters derived from SN Ia, finding in Flat $w$CDM a difference of $\Delta \Omega_{\rm M} = +0.036$ and $\Delta w = -0.056$ compared to the unmodified distance moduli, a change of $\sim 0.3\sigma$. We argue that our modelling of SN Ia lensing will lower systematics on future surveys with higher statistical power. We use the observed dispersion of lensing in DES-SN5YR to constrain $\sigma_8$, but caution that the fit is sensitive to uncertainties at small scales. Nevertheless, our detection of SN Ia lensing opens a new pathway to study matter inhomogeneity that complements galaxy-galaxy lensing surveys and has unrelated systematics.",
keywords = "Astrophysics - Cosmology and Nongalactic Astrophysics",
author = "{Dark Energy Survey Collaboration} and P. Shah and Davis, {T. M.} and D. Bacon and J. Frieman and L. Galbany and R. Kessler and O. Lahav and J. Lee and C. Lidman and Nichol, {R. C.} and M. Sako and D. Scolnic and M. Sullivan and M. Vincenzi and P. Wiseman and S. Allam and Abbott, {T. M. C.} and M. Aguena and O. Alves and F. Andrade-Oliveira and J. Annis and K. Bechtol and E. Bertin and S. Bocquet and D. Brooks and D. Brout and {Carnero Rosell}, A. and J. Carretero and Castander, {F. J.} and {da Costa}, {L. N.} and Pereira, {M. E. S.} and Diehl, {H. T.} and P. Doel and C. Doux and S. Everett and I. Ferrero and B. Flaugher and D. Friedel and M. Gatti and D. Gruen and Gruendl, {R. A.} and G. Gutierrez and Hinton, {S. R.} and Hollowood, {D. L.} and K. Honscheid and D. Huterer and James, {D. J.} and K. Kuehn and S. Lee and M. Smith",
year = "2024",
month = jul,
day = "31",
doi = "10.1093/mnras/stae1515",
language = "English",
volume = "532",
pages = "932--944",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "1",

}

RIS

TY - JOUR

T1 - The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes

AU - Dark Energy Survey Collaboration

AU - Shah, P.

AU - Davis, T. M.

AU - Bacon, D.

AU - Frieman, J.

AU - Galbany, L.

AU - Kessler, R.

AU - Lahav, O.

AU - Lee, J.

AU - Lidman, C.

AU - Nichol, R. C.

AU - Sako, M.

AU - Scolnic, D.

AU - Sullivan, M.

AU - Vincenzi, M.

AU - Wiseman, P.

AU - Allam, S.

AU - Abbott, T. M. C.

AU - Aguena, M.

AU - Alves, O.

AU - Andrade-Oliveira, F.

AU - Annis, J.

AU - Bechtol, K.

AU - Bertin, E.

AU - Bocquet, S.

AU - Brooks, D.

AU - Brout, D.

AU - Carnero Rosell, A.

AU - Carretero, J.

AU - Castander, F. J.

AU - da Costa, L. N.

AU - Pereira, M. E. S.

AU - Diehl, H. T.

AU - Doel, P.

AU - Doux, C.

AU - Everett, S.

AU - Ferrero, I.

AU - Flaugher, B.

AU - Friedel, D.

AU - Gatti, M.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gutierrez, G.

AU - Hinton, S. R.

AU - Hollowood, D. L.

AU - Honscheid, K.

AU - Huterer, D.

AU - James, D. J.

AU - Kuehn, K.

AU - Lee, S.

AU - Smith, M.

PY - 2024/7/31

Y1 - 2024/7/31

N2 - The residuals of the distance moduli of Type Ia supernovae (SN Ia) relative to a Hubble diagram fit contain information about the inhomogeneity of the universe, due to weak lensing magnification by foreground matter. By correlating the residuals of the Dark Energy Survey Year 5 SN Ia sample (DES-SN5YR) with extra-galactic foregrounds from the DES Y3 Gold catalog, we detect the presence of lensing at $6.0 \sigma$ significance. This is the first detection with a significance level above $5\sigma$. Constraints on the effective mass-to-light ratios and radial profiles of dark-matter haloes surrounding individual galaxies are also obtained. We show that the scatter of SNe Ia around the Hubble diagram is reduced by modifying the standardisation of the distance moduli to include an easily calculable de-lensing (i.e., environmental) term. We use the de-lensed distance moduli to recompute cosmological parameters derived from SN Ia, finding in Flat $w$CDM a difference of $\Delta \Omega_{\rm M} = +0.036$ and $\Delta w = -0.056$ compared to the unmodified distance moduli, a change of $\sim 0.3\sigma$. We argue that our modelling of SN Ia lensing will lower systematics on future surveys with higher statistical power. We use the observed dispersion of lensing in DES-SN5YR to constrain $\sigma_8$, but caution that the fit is sensitive to uncertainties at small scales. Nevertheless, our detection of SN Ia lensing opens a new pathway to study matter inhomogeneity that complements galaxy-galaxy lensing surveys and has unrelated systematics.

AB - The residuals of the distance moduli of Type Ia supernovae (SN Ia) relative to a Hubble diagram fit contain information about the inhomogeneity of the universe, due to weak lensing magnification by foreground matter. By correlating the residuals of the Dark Energy Survey Year 5 SN Ia sample (DES-SN5YR) with extra-galactic foregrounds from the DES Y3 Gold catalog, we detect the presence of lensing at $6.0 \sigma$ significance. This is the first detection with a significance level above $5\sigma$. Constraints on the effective mass-to-light ratios and radial profiles of dark-matter haloes surrounding individual galaxies are also obtained. We show that the scatter of SNe Ia around the Hubble diagram is reduced by modifying the standardisation of the distance moduli to include an easily calculable de-lensing (i.e., environmental) term. We use the de-lensed distance moduli to recompute cosmological parameters derived from SN Ia, finding in Flat $w$CDM a difference of $\Delta \Omega_{\rm M} = +0.036$ and $\Delta w = -0.056$ compared to the unmodified distance moduli, a change of $\sim 0.3\sigma$. We argue that our modelling of SN Ia lensing will lower systematics on future surveys with higher statistical power. We use the observed dispersion of lensing in DES-SN5YR to constrain $\sigma_8$, but caution that the fit is sensitive to uncertainties at small scales. Nevertheless, our detection of SN Ia lensing opens a new pathway to study matter inhomogeneity that complements galaxy-galaxy lensing surveys and has unrelated systematics.

KW - Astrophysics - Cosmology and Nongalactic Astrophysics

U2 - 10.1093/mnras/stae1515

DO - 10.1093/mnras/stae1515

M3 - Journal article

VL - 532

SP - 932

EP - 944

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -