activity
19952026
most citedThe Seventh Data Release of the Sloan Digital Sky Survey

5.4k citations · 17.6k across the 137 of their papers we have counts for

collaborators

137 papers

math.ST2026

Expected number density of critical points of smooth Gaussian random fields in arbitrary dimensions

Satoshi Kuriki, Takahiko Matsubara, Satoshi Iso

We obtain explicit formulas for the expected number and height distribution of critical points of smooth isotropic Gaussian random fields on . The expected number den…

astro-ph.CO2023★ 10 cited

Integrated perturbation theory for cosmological tensor fields. III. Projection effects

Takahiko Matsubara

The integrated perturbation theory (iPT) is a set of methods in nonlinear perturbation theory for the structure formation in the Universe. In Papers I and II [arXiv:2210.10435, arX…

astro-ph.CO2022★ 3 cited

Skewness consistency relation in large-scale structure and test of gravity theory

Daisuke Yamauchi, Shoya Ishimaru, Takahiko Matsubara +1

We investigate the skewness of galaxy number density fluctuations as a possible probe to test gravity theories. We find that the specific linear combination of the skewness paramet…

astro-ph.CO2022★ 9 cited

Integrated perturbation theory for cosmological tensor fields. II. Loop corrections

Takahiko Matsubara

In the previous paper [arXiv:2210.10435], the nonlinear perturbation theory of cosmological density field is generalized to include the tensor-valued bias of astronomical objects,…

astro-ph.CO2022★ 12 cited

Integrated perturbation theory for cosmological tensor fields. I. Basic formulation

Takahiko Matsubara

In order to extract maximal information about cosmology from the large-scale structure of the Universe, one needs to use every bit of signal that can be observed. Beyond the spatia…

astro-ph.CO2022★ 18 cited

Non-Gaussianity effects on the primordial black hole abundance for sharply-peaked primordial spectrum

Takahiko Matsubara, Misao Sasaki

We perturbatively study the effect of non-Gaussianities on the mass fraction of primordial black holes (PBHs) at the time of formation by systematically taking its effect into acco…