Table 2.
Forecast 1σ marginal relative errors on the cosmological parameters for a flat f(R) model with |fR0| = 5 × 10−6 (log10|fR0| = −5.301) in the pessimistic and optimistic cases using Euclid observations of spectroscopic galaxy clustering (GCsp), WL, photometric galaxy clustering (GCph), and the cross-correlation among the photometric probes XCph.
| |fR0| = 5 × 10−6 | ||||||
|---|---|---|---|---|---|---|
| Ωm, 0 | Ωb, 0 | log10|fR0| | h | ns | σ8 | |
| Fiducial values | 0.32 | 0.05 | −5.301 | 0.67 | 0.96 | 0.853 |
| Pessimistic setting | ||||||
| GCsp(kmax = 0.15 h Mpc−1) | 2.1% | 5.7% | 7.4% | 4.3% | 2.1% | 2.0% |
| GCsp(kmax = 0.25 h Mpc−1) | 1.4% | 2.8% | 3.9% | 1.9% | 1.0% | 1.1% |
| WL | 2.3% | 47% | 8.3% | 21% | 4.8% | 1.5% |
| GCsp + WL | 0.8% | 1.9% | 2.3% | 1.3% | 0.7% | 0.5% |
| WL + GCph + XCph | 0.8% | 5.0% | 2.7% | 3.2% | 1.7% | 0.4% |
| GCsp + WL + GCph + XCph | 0.6% | 1.7% | 1.8% | 1.0% | 0.6% | 0.4% |
| Optimistic setting | ||||||
| GCsp(kmax = 0.30 h Mpc−1) | 1.3% | 2.2% | 3.1% | 1.3% | 0.9% | 0.8% |
| WL | 1.4% | 45 % | 4.7% | 19 % | 3.2% | 0.9% |
| GCsp + WL | 0.7% | 1.5% | 2.1% | 0.9% | 0.6% | 0.4% |
| WL + GCph + XCph | 0.3% | 4.3% | 1.4% | 2.1% | 0.7% | 0.2% |
| GCsp + WL + GCph + XCph | 0.3% | 1.2% | 1.1% | 0.5% | 0.4% | 0.2% |
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