Kazuya Koyama Portrait

Professor Kazuya Koyama

Professor of Cosmology

Kazuya.Koyama@port.ac.uk

PhD Supervisor

View my research outputs
Faculty of Technology Cosmology and astrophysics Institute of Cosmology and Gravitation

Biography

I am a Professor of Cosmology in the Institute of Cosmology and Gravitation at the 麻豆社区. My research interests lie in theoretical cosmology, particularly the origin of structure in our Universe and the late time acceleration of the Universe. My research is supported by the Science and Technology Facilities Council and the European Research Council鈥檚 consolidator grant 鈥淐osmological Tests of Gravity鈥. I was supported by the European Research Council鈥檚 starting grant, 鈥淢odified gravity models as an alternative to dark energy鈥 between 2008 and 2013. I was awarded my PhD from Kyoto University in 2002. Previous awards include RCUK academic fellowship, PPARC psotdoctoral fellowship, Japanese JSPS potdoctoral fellowship. In 2009 I was awarded the Philipe Leverhulme prize and in 2010 I received the Young Scientist Award of the Physical Society of Japan. I was a PI of a Royal Society International Joint Project with the Yukawa Institute at Kyoto University. The collaboration between Portsmouth and Kyoto University was awarded the Daiwa-Adrian prize in 2010. 

Research interests

My main research interest lies in theoretical cosmology. I study the origin of structure in our Universe and test the early universe models using the statistical properties of the cosmic microwave background and the large scale structure of the Universe. I am also interested in explaining the late time acceleration of the Universe. Particularly I investigate a possibility to realise the late time acceleration by modifying general relativity on cosmological scales and develop cosmological tests of gravity.

 

Research outputs

2024

Ach煤carro, A., Adam, R., Adamek, J., Addison, G. E., Aghanim, N., Aguena, M., Ajani, V., Akrami, Y., Al-Bahlawan, A., Alavi, A., Albuquerque, I. S., Alestas, G., Alguero, G., Allaoui, A., Allevato, V., Alonso-Tetilla, A. V., Altieri, B., Alvarez-Candal, A., Amara, A., Avila, S., Bacon, D., Barroso, J. A. A., Beutler, F., Bose, B., Collaboration, E., Collett, T. E., Fiorini, B., Fonseca De La Bella, L., Fonseca, J., Gaztanaga, E., Joudaki, S., Koyama, K., Leclercq, F., Manera, M., Maraston, C., Markovic, K., Mellier, Y., Nadathur, S., Nichol, R. C., Noller, J., Pace, F., Pattison, C., Percival, W. J., Pollack, J. E., Pourtsidou, A., Raccanelli, A., Schewtschenko, J. A., Whalen, D. J., Winther, H. -., Youles, S.

29 Aug 2024, In: Astronomy and Astrophysics

Aguiar, B. F. d., Brando, G., Falciano, F., Gordon, J., Koyama, K., Miranda, V., Rebou莽as, J., Winther, H. A.

21 Aug 2024, In: Monthly Notices of the Royal Astronomical Society

Bacon, D., Crittenden, R. G., Donald-McCann, J., Feng, Y., Gsponer, R., Koyama, K., Mu, X., Wang, Y., Zhang, W., Zhao, G., Zhao, R.

2 Jul 2024, In: Monthly Notices of the Royal Astronomical Society. 532, 1, p. 783鈥804

Aghanim, N., Amara, A., Andreon, S., Auricchio, N., Baldi, M., Bardelli, S., Bella, L. F. d. l., Bodendorf, C., Bonino, D., Bose, B., Branchini, E., Brescia, M., Brinchmann, J., Camera, S., Capobianco, V., Carbone, C., Cardone, V. F., Carella, E., Carretero, J., Carrilho, P., Casas, S., Castellano, M., Cavuoti, S., Cimatti, A., Collaboration, E., Congedo, G., Conselice, C. J., Conversi, L., Copin, Y., Costille, A., Courbin, F., Courtois, H. M., D'Amico, G., Fiorini, B., Frusciante, N., Giocoli, C., Joudaki, S., Koyama, K., Lombriser, L., Marinucci, M., Markovic, K., Moretti, C., Nadathur, S., Pace, F., Percival, W. J., Pietroni, M., Piga, L., Pourtsidou, A., Silva, A. D., Vernizzi, F.

2 Jun 2024, In: Astronomy and Astrophysics

Assadullahi, H., Gow, A. D., Jackson, J. H. P., Koyama, K., Vennin, V., Wands, D.

9 May 2024, In: Journal of Cosmology and Astroparticle Physics. 2024, 5, 35p., 053

Feng, Y., Gil-Mar铆n, H., Guo, H., Koyama, K., Li, Y., Nishimichi, T., Percival, W. J., Wang, Y., Wu, Y., Zhai, Z., Zhang, H., Zhao, G. B., Zhao, R.

1 May 2024, In: Astrophysical Journal. 966, 1, 15p., 35

Bacon, D., Crittenden, R., Donald-McCann, J., Gsponer, R., Koyama, K., Mueller, E., Simon, T., Zhao, R.

1 May 2024, In: Monthly Notices of the Royal Astronomical Society. 530, 3, p. 3075鈥3099

Ge, F., Gil-Mar铆n, H., Hahn, C., Hikage, C., Koyama, K., Mu, X., Percival, W. J., Takahashi, R., Wang, Y., Yu, Y., Zhang, W., Zhao, G., Zhao, R., Zhu, H.

18 Apr 2024, In: Communications Physics. 7, 9p., 130

Feng, Y., Gil-Mar铆n, H., Guo, H., Koyama, K., Li, Y., Nishimichi, T., Percival, W. J., Wang, Y., Wu, Y., Zhai, Z., Zhang, H., Zhao, G., Zhao, R.

24 Feb 2024, In: The Astrophysical Journal

2023

Baker, T., Fiorini, B., Koyama, K.

22 Dec 2023, In: Journal of Cosmology and Astroparticle Physics. 2023, 12, 26p., 045