Thomas Edward Collett Portrait

Professor Thomas Collett

Professor of Astrophysics

Thomas.Collett@port.ac.uk

PhD Supervisor

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

Biography

I am an astrophysicist and cosmologist studying how dark energy is affecting the expansion of the Universe. I do this using a phenomenon called strong gravitational lensing, where the path of light from a background galaxy is bent by a massive foreground galaxy to produce multiple images of the background source. The location where the lensed images form is sensitive to the cosmological parameters and the dark matter distribution in the lens galaxy and throughout the Universe. I’m trying to probe all three with observations from the world's leading telescopes.

My research has been funded by the Royal Astronomical Society, ºÚÁÏÕýÄÜÁ¿, Science and Technolody Facilities Council and the Royal Society.

I won the Winton prize in 2020 and the Murdin prize in 2014.

I'm particularly proud of the following papers:

Research outputs

2025

Sahu, N., Shajib, A. J., Tran, K. V., Skobe, H., Rhoades, S., Jones, T., Glazebrook, K., Collett, T. E., Suyu, S. H., Vasan G. C, K., Barone, T. M., Bowden, D. J., Ballard, D., Kacprzak, G. G., Sweet, S. M., Lewis, G. F., Nanayakkara, T.

20 Sep 2025, In: Astrophysical Journal. 991, 1, 17p., 72

Research output: Article

Lines, N. E., Li, T., Collett, T. E., Holloway, P., Nightingale, J. W., Rojas, K., Verma, A., Walmsley, M.

18 Aug 2025, In: Nature Astronomy. 9, 8, p. 1116-1122, 7p.

Research output: Article

Melo-Carneiro, C. R., Collett, T. E., Oldham, L. J., Enzi, W., Furlanetto, C., Chies-Santos, A. L., Li, T.

7 Aug 2025, In: Monthly Notices of the Royal Astronomical Society. 541, 4, p. 2853-2871, 19p.

Research output: Article

Collaboration, E., Lines, N. E. P., Collett, T. E., Walmsley, M., Rojas, K., Li, T., Leuzzi, L., Manjón-García, A., Vincken, S. H., Wilde, J., Holloway, P., Verma, A., Metcalf, R. B., Andika, I. T., Melo, A., Melchior, M., Sánchez, H. D., Díaz-Sánchez, A., Barroso, J. A. A., Clément, B., Krawczyk, C., Pearce-Casey, R., Serjeant, S., Courbin, F., Despali, G., Gavazzi, R., Schuldt, S., Degaudenzi, H., Ecker, L. R., Enzi, W. J. R., Finner, K., Galan, A., Giocoli, C., Hogg, N. B., Jahnke, K., Kruk, S., Mahler, G., More, A., Nagam, B. C., Pearson, J., de Murieta, A. S., Weisenbach, L., Amara, A., Casas, S., Nichol, R. C., Percival, W. J., Schewtschenko, J. A., Gaztanaga, E., Nadathur, S., Naidoo, K.

17 Jun 2025, In: Astronomy and Astrophysics

Research output: Article

Collaboration, E., Li, T., Collett, T. E., Walmsley, M., Lines, N. E. P., Rojas, K., Nightingale, J. W., Enzi, W. J. R., Moustakas, L. A., Krawczyk, C., Gavazzi, R., Despali, G., Holloway, P., Schuldt, S., Courbin, F., Metcalf, R. B., Ballard, D. J., Verma, A., Clément, B., Degaudenzi, H., Melo, A., Barroso, J. A. A., Leuzzi, L., Manjón-García, A., Pearce-Casey, R., Sluse, D., Tortora, C., Massey, R., Mahler, G., More, A., Aghanim, N., Altieri, B., Amara, A., Andreon, S., Auricchio, N., Aussel, H., Baccigalupi, C., Baldi, M., Balestra, A., Bardelli, S., Battaglia, P., Bender, R., Bernardeau, F., Casas, S., Nichol, R. C., Percival, W. J., Schewtschenko, J. A., Gaztanaga, E., Nadathur, S., Naidoo, K.

13 Jun 2025, In: Astronomy and Astrophysics

Research output: Article

Enzi, W. J. R., Krawczyk, C., Ballard, D., Collett, T.

1 Jun 2025, In: Monthly Notices of the Royal Astronomical Society. 540, 1, p. 247–263

Research output: Article

Collaboration, E., Mellier, Y., Barroso, J. A. A., Achúcarro, A., Adamek, J., Adam, R., 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., Beutler, F., Bose, B., Collett, T. E., Fiorini, B., Fonseca, J., Gaztanaga, E., Joudaki, S., Koyama, K., Leclercq, F., Manera, M., Maraston, C., Markovic, K., 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., Fonseca De La Bella, L.

1 May 2025, In: Astronomy and Astrophysics. 697, 94p., A1

Research output: Article

Weisenbach, L., Collett, T., Enzi, W., Oldham, L., De Murieta, A. S.

1 May 2025, In: Monthly Notices of the Royal Astronomical Society. 539, 1, p. 393-404, 12p.

Research output: Article

Acevedo Barroso, J. A., O’Riordan, C. M., Clément, B., Tortora, C., Collett, T. E., Courbin, F., Gavazzi, R., Metcalf, R. B., Busillo, V., Andika, I. T., Cabanac, R., Courtois, H. M., Crook-Mansour, J., Delchambre, L., Despali, G., Ecker, L. R., Franco, A., Holloway, P., Jackson, N., Jahnke, K., Mahler, G., Marchetti, L., Matavulj, P., Melo, A., Meneghetti, M., Moustakas, L. A., Müller, O., Nucita, A. A., Paulino-Afonso, A., Pearson, J., Rojas, K., Scarlata, C., Schuldt, S., Serjeant, S., Sluse, D., Suyu, S. H., Vaccari, M., Verma, A., Vernardos, G., Walmsley, M., Bouy, H., Walth, G. L., Powell, D. M., Bolzonella, M., Cuillandre, J. C., Kluge, M., Hogg, N. B., Amara, A., Casas, S., Nichol, R. C.

1 May 2025, In: Astronomy and Astrophysics. 697, 5, p. 1-16, 16p., A14

Research output: Article

Shajib, A. J., Smith, G. P., Birrer, S., Verma, A., Arendse, N., Collett, T., Daylan, T., Serjeant, S.

1 May 2025, In: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 383, 2295, 13p., 20240117

Research output: Article