Euclid: Improving the efficiency of weak lensing shear bias calibration - Pixel noise cancellation and the response method on trial

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Table 3

Efficiency comparison for the grid-based simulations.

Method	µ-bias			c-bias
	RI	σ_RI	GI	RI	σ_RI	GI
Shear interval [−0.1,0.1]

Shape	6.0	0.1	6.0	6.2	0.1	6.2
Both	12.8	0.2	7.7	13.9	0.3	8.3
RM	4.6	0.1	4.6	0.7	0.01	0.7

Shear interval [−0.02,0.02]

Shape	6.3	0.1	6.3	6.3	0.1	6.3
Both	14.9	0.3	8.9	14.9	0.3	9.0
RM	145.6	2.7	145.6	3.4	0.1	3.4

Notes. This table includes galaxies with input magnitudes brighter than 24.5 and a selection of S/N ten and above. RM stands for the response method, RI for runtime improvement, and GI for the total galaxy number improvement. The uncertainty for the runtime improvement is listed as σ_RI.

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