1.1k citations · 3.7k across the 33 of their papers we have counts for
3 papers · 1 filter
The systematic error test for PSF correction in weak gravitational lensing shear measurement by The ERA Method by Idealizing PSF
Yuki Okura, Toshifumi Futamase
We improve the ERA(Ellipticity of Re-smeared Artificial image) method of PSF(Point Spread Function) correction in weak lensing shear analysis in order to treat realistic shape of g…
Consequences of CCD imperfections for cosmology determined by weak lensing surveys: From laboratory measurements to cosmological parameter bias
Yuki Okura, Andrea Petri, Morgan May +2
Weak gravitational lensing causes subtle changes in the apparent shapes of galaxies due to the bending of light by the gravity of foreground masses. By measuring the shapes of larg…
A New Constraint on the Ly Fraction of UV Very Bright Galaxies at Redshift 7
Hisanori Furusawa, Nobunari Kashikawa, Masakazu A. R. Kobayashi +15
We study the extent to which very bright (-23.0 < MUV < -21.75) Lyman-break selected galaxies at redshifts z~7 display detectable Lya emission. To explore this issue, we have obtai…