- Target: Anomalies in the *two-point correlation function* \( \xi(r) \) on a scale \( >100 \) Mpc due to local variations \( \Lambda \).
- Euclid (ESA):
- Galaxy spectroscopy to measure redshift-space distortions (RSD).
Data analysis:
1. Statistical Filtration:
- Calculate the deviation \( \xi(r) \) from the standard \( \Lambda \)CDM prediction using the estimator: \[\xi(r) = \frac{DD(r) - 2DR(r) + RR(r)}{RR(r)}, \]
where \( DD, DR, RR \) are pairs of data-data, data-random, and random-random.
2. Machine Learning:
- Convolutional Neural Networks (CNN) algorithm to identify anomalous patterns in galaxy maps.
Instrument Specification Table
| Instrument | Key Parameters | Abilities |