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Dr Thomas Collett

Senior Research Fellow

  1. 2020
  2. Published
  3. Early online

    STRIDES: Spectroscopic and photometric characterization of the environment and effects of mass along the line of sight to the gravitational lenses DES J0408-5354 and WGD 2038-4008

    DES Collaboration, Dr Thomas Collett & S. Avila, 29 Aug 2020, (Early online) In: Monthly Notices of the Royal Astronomical Society.

    Research output: Contribution to journalArticlepeer-review

  4. Early online

    Localizing merging black holes with sub-arcsecond precision using gravitational-wave lensing

    Otto A. Hannuksela, Dr Thomas Collett, Mesut Çalışkan & Tjonnie G. F. Li, 24 Aug 2020, (Early online) In: Monthly Notices of the Royal Astronomical Society.

    Research output: Contribution to journalArticlepeer-review

  5. Published

    TDCOSMO. I. An exploration of systematic uncertainties in the inference of H0 from time-delay cosmography

    M. Millon, A. Galan, F. Courbin, T. Treu, S. H. Suyu, X. Ding, S. Birrer, G. C.-F. Chen, A. J. Shajib, D. Sluse & 15 others, K. C. Wong, A. Agnello, M. W. Auger, E. J. Buckley-Geer, J. H. H. Chan, Dr Thomas Collett, C. D. Fassnacht, S. Hilbert, L. V. E. Koopmans, V. Motta, S. Mukherjee, C. E. Rusu, A. Sonnenfeld, C. Spiniello & L. Van de Vyvere, 16 Jul 2020, In: Astronomy and Astrophysics. 639, 19 p., A101.

    Research output: Contribution to journalArticlepeer-review

  6. Accepted for publication

    TDCOSMO IV: Hierarchical time-delay cosmography -- joint inference of the Hubble constant and galaxy density profiles

    S. Birrer, A. J. Shajib, A. Galan, M. Millon, T. Treu, A. Agnello, M. Auger, G. C. -F. Chen, L. Christensen, Dr Thomas Collett & 16 others, F. Courbin, C. D. Fassnacht, L. V. E. Koopmans, P. J. Marshall, C. E. Rusu, D. Sluse, C. Spiniello, S. H. Suyu, S. Wagner-Carena, K. C. Wong, M. Barnabè, A. S. Bolton, O. Czoske, X. Ding, J. A. Frieman & L. Van de Vyvere, 6 Jul 2020, (Accepted for publication) In: Astronomy and Astrophysics.

    Research output: Contribution to journalArticlepeer-review

  7. Early online

    A triple rollover: a third multiply-imaged source at z~6 behind the Jackpot gravitational lens

    Dr Thomas Collett & Russell J. Smith, 23 Jun 2020, (Early online) In: Monthly Notices of the Royal Astronomical Society. 7 p.

    Research output: Contribution to journalArticlepeer-review

  8. Early online

    Observing the earliest moments of supernovae using strong gravitational lenses

    Max Foxley-Marrable, Dr Thomas Collett, Chris Frohmaier, Daniel A. Goldstein, Daniel Kasen, Elizabeth Samantha Swann & Professor David Bacon, 11 May 2020, (Early online) In: Monthly Notices of the Royal Astronomical Society.

    Research output: Contribution to journalArticlepeer-review

  9. Published

    Observation and confirmation of nine strong lensing systems in Dark Energy Survey Year 1 data

    B. Nord, E. Buckley-Geer, H. Lin, N. Kuropatkin, Dr Thomas Collett, D. L. Tucker, H. T. Diehl, A. Agnello, Professor Adam Amara, T. M. C. Abbott & 57 others, S. Allam, J. Annis, S. Avila, K. Bechtol, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, C. E. Cunha, L. N. da Costa, C. Davis, J. De Vicente, P. Doel, T. F. Eifler, A. E. Evrard, E. Fernandez, B. Flaugher, P. Fosalba, J. Frieman, J. Garcıa- Bellido, E. Gaztanaga, D. Gruen, R. A. Gruendl, G. Gutierrez, W. G. Hartley, D. L. Hollowood, K. Honscheid, B. Hoyle, D. J. James, K. Kuehn, N. Kuropatkin, O. Lahav, M. Lima, M. A. G. Maia, M. March, J. L. Marshall, P. Melchior, F. Menanteau, R. Miquel, A. A. Plazas, A. K. Romer, A. Roodman, E. S. Rykoff, E. Sanchez, V. Scarpine, R. Schindler, M. Schubnell, I. Sevilla-Noarbe, M. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E. C. Swanson, G. Tarle, Professor Daniel Thomas & Y. Zhang, 1 May 2020, In: Monthly Notices of the Royal Astronomical Society. 494, 1, p. 1308–1322

    Research output: Contribution to journalArticlepeer-review

  10. Published

    The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2017/2018 follow-up campaign: discovery of 10 lensed quasars and 10 quasar pairs

    C. Lemon, M. W. Auger, R. McMahon, T. Anguita, Y. Apostolovski, G. C.-F. Chen, C. D. Fassnacht, A. Melo, V. Motta, A. Shajib & 58 others, T. Treu, A. Agnello, E. Buckley-Geer, P. L. Schechter, S. Birrer, Dr Thomas Collett, F. Courbin, C. E. Rusu, T. M. C. Abbott, S. Allam, J. Annis, S. Avila, E. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, M. Costanzi, L. N. da Costa, J. De Vicente, S. Desai, T. F. Eifler, B. Flaugher, J. Frieman, J. García-Bellido, E. Gaztanaga, D. W. Gerdes, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, K. Honscheid, D. J. James, A. Kim, E. Krause, K. Kuehn, N. Kuropatkin, O. Lahav, M. Lima, H. Lin, M. A. G. Maia, M. March, J. L. Marshall, F. Menanteau, R. Miquel, A. Palmese, F. Paz Chinchón, A. A. Plazas, A. Roodman, E. Sanchez, M. Schubnell, S. Serrano, M. Smith, M. Soares-Santos, E. Suchyta, G. Tarle & A. R. Walker, 1 May 2020, In: Monthly Notices of the Royal Astronomical Society. 494, 3, p. 3491-3511 21 p.

    Research output: Contribution to journalArticlepeer-review

  11. Accepted for publication

    STRIDES: A 3.9 per cent measurement of the Hubble constant from the strong lens system DES J0408-5354

    A. J. Shajib, S. Birrer, T. Treu, A. Agnello, E. J. Buckley-Geer, J. H. H. Chan, L. Christensen, C. Lemon, H. Lin, M. Millon & 81 others, J. Poh, C. E. Rusu, D. Sluse, C. Spiniello, G. C. -F. Chen, Dr Thomas Collett, F. Courbin, C. D. Fassnacht, J. Frieman, A. Galan, D. Gilman, A. More, T. Anguita, M. W. Auger, V. Bonvin, R. McMahon, G. Meylan, K. C. Wong, T. M. C. Abbott, J. Annis, S. Avila, K. Bechtol, D. Brooks, D. Brout, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, M. Costanzi, L. N. da Costa, J. De Vicente, S. Desai, J. P. Dietrich, P. Doel, A. Drlica-Wagner, A. E. Evrard, D. A. Finley, B. Flaugher, P. Fosalba, J. García-Bellido, D. W. Gerdes, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, D. L. Hollowood, K. Honscheid, D. Huterer, D. J. James, T. Jeltema, E. Krause, N. Kuropatkin, T. S. Li, M. Lima, N. MacCrann, M. A. G. Maia, J. L. Marshall, P. Melchior, R. Miquel, R. L. C. Ogando, A. Palmese, F. Paz-Chinchón, A. A. Plazas, A. K. Romer, A. Roodman, M. Sako, E. Sanchez, B. Santiago, V. Scarpine, M. Schubnell, D. Scolnic, S. Serrano, I. Sevilla-Noarbe, M. Smith, M. Soares-Santos, E. Suchyta, G. Tarle, Professor Daniel Thomas, A. R. Walker & Y. Zhang, 18 Mar 2020, (Accepted for publication) In: Monthly Notices of the Royal Astronomical Society.

    Research output: Contribution to journalArticlepeer-review

  12. Published

    Detecting strongly lensed supernovae at z ~ 5-7 with LSST

    Claes-Erik Rydberg, Dr Daniel Whalen, Matteo Maturi, Dr Thomas Collett, Mauricio Carrasco, Mattis Magg & Ralf S. Klessen, 1 Jan 2020, In: Monthly Notices of the Royal Astronomical Society. 491, 2, p. 2447-2459 13 p.

    Research output: Contribution to journalArticlepeer-review

  13. 2019
  14. Published

    Model-independent determination of H0 and ΩK0 from strong lensing and type Ia supernovae

    Dr Thomas Collett, Francesco Montanari & Syksy Rasanen, 6 Dec 2019, In: Physical Review Letters. 123, 23, 7 p., 231101.

    Research output: Contribution to journalArticlepeer-review

  15. Published

    H0LiCOW – X. Spectroscopic/imaging survey and galaxy-group identification around the strong gravitational lens system WFI 2033−4723

    D. Sluse, C. E. Rusu, C. D. Fassnacht, A. Sonnenfeld, J. Richard, M. W. Auger, L. Coccato, K. C. Wong, S. H. Suyu, T. Treu & 58 others, A. Agnello, S. Birrer, V. Bonvin, Dr Thomas Collett, F. Courbin, S. Hilbert, L. V. E. Koopmans, O. Tihhanova, P. J. Marshall, G. Meylan, A. J. Shajib, J. Annis, S. Avila, E. Bertin, D. Brooks, E. Buckley-Geer, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, L. N. da Costa, J. De Vicente, S. Desai, P. Doel, A. E. Evrard, B. Flaugher, J. Frieman, J. García-Bellido, D. W. Gerdes, D. A. Goldstein, R. A. Gruendl, J. Gschwend, W. G. Hartley, D. L. Hollowood, K. Honscheid, D. J. James, A. G. Kim, E. Krause, K. Kuehn, N. Kuropatkin, M. Lima, H. Lin, M. A. G. Maia, J. L. Marshall, P. Melchior, F. Menanteau, R. Miquel, A. A. Plazas, E. Sanchez, S. Serrano, I. Sevilla-Noarbe, M. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E. C. Swanson & G. Tarle, 1 Nov 2019, In: Monthly Notices of the Royal Astronomical Society. 490, 1, p. 613-633 21 p.

    Research output: Contribution to journalArticlepeer-review

  16. Published

    An extended catalog of galaxy-galaxy strong gravitational lenses discovered in DES using convolutional neural networks

    Dark Energy Survey Collaboration, Dr Thomas Collett & S. Avila, 19 Jul 2019, In: The Astrophysical Journal Supplement Series. 243, 1, 11 p., 17.

    Research output: Contribution to journalArticlepeer-review

  17. Published

    First cosmological results using type Ia supernovae from the Dark Energy Survey: measurement of the Hubble Constant

    Dark Energy Survey Collaboration, E. Macaulay, Professor Bob Nichol, Professor David Bacon, C. B. D'Andrea, S. Avila, Dr Thomas Collett, Elizabeth Samantha Swann & Professor Daniel Thomas, 1 Jun 2019, In: Monthly Notices of the Royal Astronomical Society. 486, 2, p. 2184–2196

    Research output: Contribution to journalArticlepeer-review

  18. Published

    Automated lensing learner: automated strong lensing identification with a computer vision technique

    Camille Avestruz, Nan Li, Hanjue Zhu, Matthew Lightman, Dr Thomas Collett & Wentao Luo, 24 May 2019, In: The Astrophysical Journal. 877, 1, p. 1-19 19 p., 58.

    Research output: Contribution to journalArticlepeer-review

  19. Published

    Finding high-redshift strong lenses in DES using convolutional neural networks

    C. Jacobs, Dr Thomas Collett, K. Glazebrook, C. McCarthy, A. K. Qin, T. M. C. Abbott, F. B. Abdalla, J. Annis, S. Avila, K. Bechtol & 56 others, E. Bertin, D. Brooks, E. Buckley-Geer, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, L. N. da Costa, C. Davis, J. De Vicente, S. Desai, H. T. Diehl, P. Doel, T. F. Eifler, B. Flaugher, J. Frieman, J. García- Bellido, E. Gaztanaga, D. W. Gerdes, D. A. Goldstein, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, W. G. Hartley, D. L. Hollowood, K. Honscheid, B. Hoyle, D. J. James, K. Kuehn, N. Kuropatkin, O. Lahav, T. S. Li, M. Lima, H. Lin, M. A. G. Maia, P. Martini, C. J. Miller, R. Miquel, B. Nord, A. A. Plazas, E. Sanchez, V. Scarpine, M. Schubnell, S. Serrano, I. Sevilla-Noarbe, M. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E. C. Swanson, G. Tarle, V. Vikram, A. R. Walker, Y. Zhang & J. Zuntz, 21 Apr 2019, In: MNRAS. 484, 4, p. 5330-5349 20 p.

    Research output: Contribution to journalArticlepeer-review

  20. Published

    Is every strong lens model unhappy in its own way? Uniform modelling of a sample of 12 quadruply+ imaged quasars

    A. J. Shajib, S. Birrer, T. Treu, M. W. Auger, A. Agnello, T. Anguita, E. J. Buckley-Geer, J. H. H. Chan, Dr Thomas Collett, F. Courbin & 63 others, C. D. Fassnacht, J. Frieman, I. Kayo, C. Lemon, H. Lin, P. J. Marshall, R. McMahon, A. More, N. D. Morgan, V. Motta, M. Oguri, F. Ostrovski, C. E. Rusu, P. L. Schechter, T. Shanks, S. H. Suyu, G. Meylan, T. M. C. Abbott, S. Allam, J. Annis, S. Avila, E. Bertin, D. Brooks, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, C. E. Cunha, L. N. da Costa, J. De Vicente, S. Desai, P. Doel, B. Flaugher, P. Fosalba, J. García-Bellido, D. W. Gerdes, D. Gruen, R. A. Gruendl, G. Gutierrez, W. G. Hartley, D. L. Hollowood, B. Hoyle, D. J. James, K. Kuehn, N. Kuropatkin, O. Lahav, M. Lima, M. A. G. Maia, M. March, J. L. Marshall, P. Melchior, F. Menanteau, R. Miquel, A. A. Plazas, E. Sanchez, V. Scarpine, I. Sevilla-Noarbe, M. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E. C. Swanson, G. Tarle & A. R. Walker, 11 Mar 2019, In: Monthly Notices of the Royal Astronomical Society. 483, 4, p. 5649–5671

    Research output: Contribution to journalArticlepeer-review

  21. 2018
  22. Published

    The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign. I. Overview and classification of candidates selected by two techniques

    T. Treu, A. Agnello, M. A. Baumer, S. Birrer, E. J. Buckley-Geer, F. Courbin, Y. J. Kim, H. Lim, P. J. Marshall, B. Nord & 72 others, P. L. Schechter, P. R. Sivakumar, L. E. Abramson, T. Anguita, Y. Apostolovski, M. W. Auger, J. H. H. Chan, G. C. F. Chen, Dr Thomas Collett, C. D. Fassnacht, J. -W. Hsueh, C. Lemon, R. G. McMahon, V. Motta, F. Ostrovski, K. Rojas, C. E. Rusu, P. Williams, J. Frieman, G. Meylan, S. H. Suyu, T. M. C. Abbott, F. B. Abdalla, S. Allam, J. Annis, S. Avila, M. Banerji, D. Brooks, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, C. B. D'Andrea, L. N. da Costa, J. De Vicente, P. Doel, T. F. Eifler, B. Flaugher, P. Fosalba, J. García-Bellido, D. A. Goldstein, D. Gruen, R. A. Gruendl, G. Gutierrez, W. G. Hartley, D. Hollowood, K. Honscheid, D. J. James, K. Kuehn, N. Kuropatkin, M. Lima, M. A. G. Maia, P. Martini, F. Menanteau, R. Miquel, A. A. Plazas, A. K. Romer, E. Sanchez, V. Scarpine, R. Schindler, M. Schubnell, I. Sevilla-Noarbe, M. Smith, R. C. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E. C. Swanson, G. Tarle, Professor Daniel Thomas, D. L. Tucker & A. R. Walker, 21 Nov 2018, In: Monthly Notices of the Royal Astronomical Society. 481, 1, p. 1041–1054

    Research output: Contribution to journalArticlepeer-review

  23. Published

    Serendipitous discovery of a strong-lensed galaxy in integral field spectroscopy from MUSE

    Lluís Galbany, Dr Thomas Collett, Jairo Méndez-Abreu, Sebastián F. Sánchez, Joseph P. Anderson & Hanindyo Kuncarayakti, 1 Sep 2018, In: Monthly Notices of the Royal Astronomical Society. 479, 1, p. 262-274 13 p.

    Research output: Contribution to journalArticlepeer-review

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