◍wovepaper
SearchResearchersInstitutions
Sign in
researcher

Koichi Hirano

13 papers hereh-index 795 citations23 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • sole author4
  • first author8
  • last author1

Across the 13 of 13 papers where every author was matched, so the position is known.

fields
  • astro-ph.CO12
  • astro-ph1
same name
  • Koichi Hirano — 1 paper

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

activity
20072019
most citedGalaxy redshift abundance periodicity from Fourier analysis of number counts N(z) using SDSS and 2dF GRS galaxy surveys

18 citations · 70 across the 13 of their papers we have counts for

collaborators
Showing 2011Show all

3 papers · 1 filter

astro-ph.CO2011★ 15 cited

Constraining Galileon gravity from observational data with growth rate

Koichi Hirano, Zen Komiya, Hisato Shirai

We studied the cosmological constraints on the Galileon gravity obtained from observational data of the growth rate of matter density perturbations, the supernovae Ia (SN Ia), the…

astro-ph.CO2011

Galaxy N-z Relation and CMB Spectrum Based on Cosmological Model with Scalar Field Having Modified Potential Form

Koichi Hirano, Kiyoshi Kawabata, Zen Komiya +1

We have succeeded in establishing a cosmological model with a non-minimally coupled scalar field ϕ that can account not only for the spatial periodicity or the picket-fence struc…

astro-ph.CO2011★ 6 cited

Observational tests of Galileon gravity with growth rate

Koichi Hirano, Zen Komiya

We compare observational data of growth rate with the prediction by Galileon theory. For the same value of the energy density parameter Ωm,0​, the growth rate in Galileon model…

◍wovepaper

Papers, researchers and institutions, woven together.

Explore
  • Search
  • Researchers
  • Institutions
Account
  • Library
  • Chat
Data
  • arXiv.org
  • Semantic Scholar
  • OpenAlex
  • Latest RSS
AboutContactPrivacyDevelopersllms.txtopenapi.json
Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.