Nagoya University Cosmology Group (C-lab)

Nagoya University
Cosmology Group (C-lab)

日本語

Welcome to our Cosmology Group

C-lab members work on cosmology and a wide range of related research areas in astrophysics in a theoretical way. Our final aim is to make the most accurate theoretical model that describes the Universe.

Cosmology consists in studying essential questions such as what the origin of our world is like and how it evolves today, which have attracted us for a long time. In ancient times it was connected to mythology, religions and philosophy, but now it has also become one of the research fields of science owing to great progress in observational techniques. Modern technology enables us to gain numerous amount of data called “Big Data” and we can obtain a picture of the Universe much more precise than ever. C-lab members try to make this accurate picture of the Universe by computing theoretical models and comparing them with the newest observational data. We also propose new observations based on our theoretical predictions. We hope that our research will lead us to a better understanding of the Universe.

What's New


2021. Nov.
An article related to cosmological studies by NASA’s next flagship mission Nancy Grace Roman Space Telescope, which is based on papers written by a research group including Assoc. Prof. Hironao Miyatake, appeared in the NASA website. (link)

2021. Oct.
Two papers written by Assoc. Prof. Hironao Miyatake were published in Monthly Notices of the Royal Astronomical Society. In these studies, we forecasted cosmological constraints by a galaxy survey with NASA’s next flagship mission Nancy Grace Roman Space Telescope. (link, link)

2021. Sep.
A paper written by Assoc. Prof. Hironao Miyatake and Lecturer Atsushi J. Nishizawa was published in The Astrophysical Journal. (link)

2021. Aug.
A paper written by Assoc. Prof. Hironao Miyatake and Lecturer Atsushi J. Nishizawa was published in Publications of the Astronomical Society of Japan. In this study, we created a galaxy sample using dark matter maps reconstructed from the Subaru Hyper Suprime-Cam survey data. (link)

2021. June.
A paper written by Mr. Katsuya T. Abe (Doctoral student), Assist. Prof. Yuichiro Tada, and Mr. Ikumi Ueda (Master student) was published in Journal of Cosmology and Astroparticle Physics. (link)

2021. June.
A paper written by Mr. Katsuya T. Abe (Doctoral student) and Assoc. Prof. Hiroyuki Tashiro was published in Physical Review D. (link)

2021. May.
A paper written by Mr. Yusuke Mikura (Master student), Assist. Prof. Yuichiro Tada, and Assist. Prof. Shuichiro Yokoyama was published in Physical Review D. (link)

2021. Mar.
A paper written by Mr. Teppei Minoda (Doctor student), Assoc. Prof. Kiyotomo Ichiki, and Assoc. Prof. Hiroyuki Tashiro was published in Journal of Cosmology and Astroparticle Physics. (link)

2021. Mar.
A paper written by Ms. Mutsumi Minoguchi (Doctor student) and Lecturer Atsushi J. Nishizawa and Prof. Naoshi Sugiyama was published in Monthly Notices of the Royal Astronomical Society. (link)

2021. Mar.
A paper written by Mr. Kazuhiro Kogai (Doctor student) and Dr. Yuko Urakawa was published in Journal of Cosmology and Astroparticle Physics. (link)

2021. Mar.
A paper written by Assist. Prof. Daichi Kashino was published in The Astrophysical Journal. (link)

2021. Mar.
A paper written by Assoc. Prof. Hironao Miyatake was published in The Astrophysical Journal SUPPLEMENT SERIES. (link)

2021.03.23
Ms. Nanaka Yamamoto was selected as an awardee of the best master thesis presentation award.

2021. Mar.
A paper written by Assist. Prof. Shuichiro Yokoyama was published in Journal of Cosmology and Astroparticle Physics. (link)

2021. Mar.
A paper written by Assist. Prof. Takeshi Kobayashi was published in Journal of Cosmology and Astroparticle Physics. (link)

2021.02.26
Assoc. Prof. Kiyotomo Ichiki was selected for the Fusion Oriented REsearch for disruptive Science and Technology (FOREST) program by the Japan Science and Technology Agency (JST) (link)

2021. Jan.
A paper written by Assist. Prof. Shuichiro Yokayama and Dr. Sachiko Kuroyanagi was published in Journal of Cosmology and Astroparticle Physics.(link)

2021. Jan.
A paper written by Assoc. Prof. Hironao Miyatake was published in Monthly Notices of the Royal Astronomical Society. (link)

2021. Mar.
A paper written by Assoc. Prof. Hiroyuki Tashirowas published in Physical Review D. (link)

Contact Us

ES bldg. 6F, Nagoya university
Furocho Chikusaku Nagoya, Aichi 464-8602 Japan
Mail Address: naoshi@%
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