Volume-limited HETDEX [OII] samples at z≤0.48 have number densities 5–10 imes higher than typical ELG surveys and power spectra consistent with log(M0/h−1M⊙)≈11.9–12.3 and a weak luminosity slope a=0.37±0.10.
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New symmetry-based FFT estimators cut the cost of power-spectrum and bispectrum multipole measurements by roughly half while providing analytic shot-noise subtraction and an open Python package.
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HETDEX [OII] galaxies at $z \le 0.48$: Volume-limited samples and their power spectra
Volume-limited HETDEX [OII] samples at z≤0.48 have number densities 5–10 imes higher than typical ELG surveys and power spectra consistent with log(M0/h−1M⊙)≈11.9–12.3 and a weak luminosity slope a=0.37±0.10.
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Efficient estimators for power spectrum and bispectrum multipole measurements
New symmetry-based FFT estimators cut the cost of power-spectrum and bispectrum multipole measurements by roughly half while providing analytic shot-noise subtraction and an open Python package.