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Cosmology constraints from shear peak statistics in Dark Energy Survey Science Verification data

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journal contribution
posted on 2023-06-09, 03:13 authored by Laura Marian, Kathy RomerKathy Romer, The DES Collaboration
Shear peak statistics has gained a lot of attention recently as a practical alternative to the two-point statistics for constraining cosmological parameters. We perform a shear peak statistics analysis of the Dark Energy Survey (DES) Science Verification (SV) data, using weak gravitational lensing measurements from a 139 deg² field. We measure the abundance of peaks identified in aperture mass maps, as a function of their signal-to-noise ratio, in the signal-to-noise range 04 would require significant corrections, which is why we do not include them in our analysis. We compare our results to the cosmological constraints from the two-point analysis on the SV field and find them to be in good agreement in both the central value and its uncertainty. We discuss prospects for future peak statistics analysis with upcoming DES data.

Funding

STFC

History

Publication status

  • Published

File Version

  • Published version

Journal

Monthly Notices Of The Royal Astronomical Society

ISSN

0035-8711

Publisher

Oxford University Press

Issue

4

Volume

463

Page range

3653-3673

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Astronomy Centre Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-09-30

First Open Access (FOA) Date

2016-09-30

First Compliant Deposit (FCD) Date

2016-09-30

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