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April 22, 2026Open Access

Environment-Resolved Effective BAO Scales on the DESI Light Cone: Differential Standard-Ruler Tests Across the Cosmic Web

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SHSIKX HILTON

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Overview

This analysis formulates an environment-resolved BAO approach to test cosmic web structures, indicating shifts in observable parameters.

Key Points

  • The aim is to assess if effective BAO parameters remain informative when accounting for cosmic-web environment and tracer classes.
  • Developed an environment-resolved BAO framework based on DESI light-cone observations.
  • Calculated sector-contrast tensors to define effective dilation parameters for different environments and tracer classes.
  • Mapped forecasts onto a DESI-ready implementation using public datasets and mock simulations.
  • Predicted voidward positive shifts and knotward negative shifts in sector contrasts.
  • Identified greater anisotropy in filament regions compared to sheets.
  • Forecasted an increase in contrast amplitude toward lower redshifts.

Cite This Study

SIKX HILTON (2026) studied this question.

synapsesocial.com/papers/69e865476e0dea528dde9d7ahttps://doi.org/10.5281/zenodo.19659932
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