prof. dr. L.V.E. (Léon) Koopmans

Professor, Scientific Director of the Kapteyn Astronomical Institute

prof. dr. L.V.E. (Léon) Koopmans
Telephone:
E-mail:
l.v.e.koopmans rug.nl

Research

Postal address:
Landleven12
Gebouw 5419, ruimte 0160
9747 AD
Groningen
Netherlands
Phone: +31 50 363 6519Fax: +31 50 363 6100
  1. 2018
  2. 2017
  3. Shu, Y., Brownstein, J. R., Bolton, A. S., Koopmans, L. V. E., Treu, T., Montero-Dorta, A. D., Auger, M. W., Czoske, O., Gavazzi, R., Marshall, P. J., & Moustakas, L. A. (2017). The Sloan Lens ACS Survey. XIII. Discovery of 40 New Galaxy-scale Strong Lenses. The Astrophysical Journal, 851(1), [48]. https://doi.org/10.3847/1538-4357/aa9794
  4. Sluse, D., Sonnenfeld, A., Rumbaugh, N., Rusu, C. E., Fassnacht, C. D., Treu, T., Suyu, S. H., Wong, K. C., Auger, M. W., Bonvin, V., Collett, T., Courbin, F., Hilbert, S., Koopmans, L. V. E., Marshall, P. J., Meylan, G., Spiniello, C., & Tewes, M. (2017). H0LiCOW - II. Spectroscopic survey and galaxy-group identification of the strong gravitational lens system HE 0435-1223. Monthly Notices of the Royal Astronomical Society, 470(4), 4838-4857. https://doi.org/10.1093/mnras/stx1484
  5. Wong, K. C., Suyu, S. H., Auger, M. W., Bonvin, V., Courbin, F., Fassnacht, C. D., Halkola, A., Rusu, C. E., Sluse, D., Sonnenfeld, A., Treu, T., Collett, T. E., Hilbert, S., Koopmans, L. V. E., Marshall, P. J., & Rumbaugh, N. (2017). H0LiCOW - IV. Lens mass model of HE 0435-1223 and blind measurement of its time-delay distance for cosmology. Monthly Notices of the Royal Astronomical Society, 465(4), 4895-4913. https://doi.org/10.1093/mnras/stw3077
  6. Kakiichi, K., Majumdar, S., Mellema, G., Ciardi, B., Dixon, K. L., Iliev, I. T., Jelić, V., Koopmans, L. V. E., Zaroubi, S., & Busch, P. (2017). Recovering the H II region size statistics from 21-cm tomography. Monthly Notices of the Royal Astronomical Society, 471(2), 1936-1954. https://doi.org/10.1093/mnras/stx1568
  7. Oldham, L., Auger, M., Fassnacht, C. D., Treu, T., Koopmans, L. V. E., Lagattuta, D., McKean, J., & Vegetti, S. (2017). The Fundamental Plane of evolving red nuggets. Monthly Notices of the Royal Astronomical Society, 470(3), 3497-3506. https://doi.org/10.1093/mnras/stx1127
  8. de Lera Acedo, E., Trott, C. M., Wayth, R. B., Fagnoni, N., Bernardi, G., Wakley, B., Koopmans, L. V. E., Faulkner, A. J., & bij de Vaate, J. G. (2017). Spectral performance of SKA Log-periodic Antennas I: mitigating spectral artefacts in SKA1-LOW 21 cm cosmology experiments. Monthly Notices of the Royal Astronomical Society, 469(3), 2662-2671. https://doi.org/10.1093/mnras/stx904
  9. Vedantham, H. K., Readhead, A. C. S., Hovatta, T., Koopmans, L. V. E., Pearson, T. J., Blandford, R. D., Gurwell, M. A., Lähteenmäki, A., Max-Moerbeck, W., Pavlidou, V., Ravi, V., Reeves, R. A., Richards, J. L., Tornikoski, M., & Zensus, J. A. (2017). The Peculiar Light Curve of J1415+1320: A Case Study in Extreme Scattering Events. The Astrophysical Journal, 845(2), [90]. https://doi.org/10.3847/1538-4357/aa7741
  10. Suyu, S. H., Bonvin, V., Courbin, F., Fassnacht, C. D., Rusu, C. E., Sluse, D., Treu, T., Wong, K. C., Auger, M. W., Ding, X., Hilbert, S., Marshall, P. J., Rumbaugh, N., Sonnenfeld, A., Tewes, M., Tihhonova, O., Agnello, A., Blandford, R. D., Chen, G. C-F., ... Spiniello, C. (2017). H0LiCOW - I. H0 Lenses in COSMOGRAIL's Wellspring: program overview. Monthly Notices of the Royal Astronomical Society, 468(3), 2590-2604. https://doi.org/10.1093/mnras/stx483
  11. Rusu, C. E., Fassnacht, C. D., Sluse, D., Hilbert, S., Wong, K. C., Huang, K-H., Suyu, S. H., Collett, T. E., Marshall, P. J., Treu, T., & Koopmans, L. V. E. (2017). H0LiCOW - III. Quantifying the effect of mass along the line of sight to the gravitational lens HE 0435-1223 through weighted galaxy counts. Monthly Notices of the Royal Astronomical Society, 467(4), 4220-4242. https://doi.org/10.1093/mnras/stx285
  12. Patil, A. H., Yatawatta, S., Koopmans, L. V. E., de Bruyn, A. G., Brentjens, M. A., Zaroubi, S., Asad, K. M. B., Hatef, M., Jelić, V., Mevius, M., Offringa, A. R., Pandey, V. N., Vedantham, H., Abdalla, F. B., Brouw, W. N., Chapman, E., Ciardi, B., Gehlot, B. K., Ghosh, A., ... Wijnholds, S. J. (2017). Upper Limits on the 21 cm Epoch of Reionization Power Spectrum from One Night with LOFAR. The Astrophysical Journal, 838(1), [65]. https://doi.org/10.3847/1538-4357/aa63e7
  13. Bonvin, V., Courbin, F., Suyu, S. H., Marshall, P. J., Rusu, C. E., Sluse, D., Tewes, M., Wong, K. C., Collett, T., Fassnacht, C. D., Treu, T., Auger, M. W., Hilbert, S., Koopmans, L. V. E., Meylan, G., Rumbaugh, N., Sonnenfeld, A., & Spiniello, C. (2017). H0LiCOW - V. New COSMOGRAIL time delays of HE 0435-1223: H0 to 3.8 per cent precision from strong lensing in a flat ΛCDM model. Monthly Notices of the Royal Astronomical Society, 465(4), 4914-4930. https://doi.org/10.1093/mnras/stw3006
  14. Oldham, L., Auger, M. W., Fassnacht, C. D., Treu, T., Brewer, B. J., Koopmans, L. V. E., Lagattuta, D., Marshall, P., McKean, J., & Vegetti, S. (2017). Red nuggets grow inside-out: evidence from gravitational lensing. Monthly Notices of the Royal Astronomical Society, 465(3), 3185-3202. https://doi.org/10.1093/mnras/stw2832
  15. Negrello, M., Amber, S., Amvrosiadis, A., Cai, Z-Y., Lapi, A., Gonzalez-Nuevo, J., De Zotti, G., Furlanetto, C., Maddox, S. J., Allen, M., Bakx, T., Bussmann, R. S., Cooray, A., Covone, G., Danese, L., Dannerbauer, H., Fu, H., Greenslade, J., Gurwell, M., ... van der Werf, P. (2017). The Herschel-ATLAS: a sample of 500 μm-selected lensed galaxies over 600 deg2. Monthly Notices of the Royal Astronomical Society, 465(3), 3558-3580. https://doi.org/10.1093/mnras/stw2911
  16. 2016
  17. McKean, J. P., Godfrey, L. E. H., Vegetti, S., Wise, M. W., Morganti, R., Hardcastle, M. J., Rafferty, D., Anderson, J., Beck, R., Bell, M. E., van Bemmel, I., Bentum, M. J., Bernardi, G., Best, P., Blaauw, R., Bonafede, A., Breitling, F., Broderick, J. W., Brüggen, M., ... Zarka, P. (2016). LOFAR imaging of Cygnus A - direct detection of a turnover in the hotspot radio spectra. Monthly Notices of the Royal Astronomical Society, 463(3), 3143-3150. https://doi.org/10.1093/mnras/stw2105
  18. Mevius, M., van der Tol, S., Pandey, V. N., Vedantham, H. K., Brentjens, M. A., de Bruyn, A. G., Abdalla, F. B., Asad, K. M. B., Bregman, J. D., Brouw, W. N., Bus, S., Chapman, E., Ciardi, B., Fernandez, E. R., Ghosh, A., Harker, G., Iliev, I. T., Jelic, V., Kazemi, S., ... Zaroubi, S. (2016). Probing ionospheric structures using the LOFAR radio telescope. Radio science, 51(7), 927-941. https://doi.org/10.1002/2016RS006028
  19. Vegetti, S., Treu, T., Auger, M., Fassnacht, C., McKean, J., Koopmans, L., & Rybak, M. (2016). Gravitationally imaging dark matter. In Astrophysics of Dark Matter (pp. 4) http://adsabs.harvard.edu/abs/2016adm..confE...4V
  20. Tuntsov, A. V., Walker, M. A., Koopmans, L. V. E., Bannister, K. W., Stevens, J., Johnston, S., Reynolds, C., & Bignall, H. E. (2016). Dynamic Spectral Mapping of Interstellar Plasma Lenses. The Astrophysical Journal, 817(2), 176-186. https://doi.org/10.3847/0004-637X/817/2/176
  21. Majumdar, S., Jensen, H., Mellema, G., Chapman, E., Abdalla, F. B., Lee, K-Y., Iliev, I. T., Dixon, K. L., Datta, K. K., Ciardi, B., Fernandez, E. R., Jelić, V., Koopmans, L. V. E., & Zaroubi, S. (2016). Effects of the sources of reionization on 21-cm redshift-space distortions. Monthly Notices of the Royal Astronomical Society, 456(2), 2080-2094. https://doi.org/10.1093/mnras/stv2812
  22. Asad, K. M. B., Koopmans, L. V. E., Jelic, V., Ghosh, A., Abdalla, F. B., Brentjens, M. A., de Bruyn, A. G., Ciardi, B., Gehlot, B. K., Iliev, I. T., Mevius, M., Pandey, V. N., Yatawatta, S., & Zaroubi, S. (2016). Polarization leakage in epoch of reionization windows - II. Primary beam model and direction-dependent calibration. Monthly Notices of the Royal Astronomical Society, 462, 4482-4494. https://doi.org/10.1093/mnras/stw1863
  23. Vrbanec, D., Ciardi, B., Jelić, V., Jensen, H., Zaroubi, S., Fernandez, E. R., Ghosh, A., Iliev, I. T., Kakiichi, K., Koopmans, L. V. E., & Mellema, G. (2016). Predictions for the 21 cm-galaxy cross-power spectrum observable with LOFAR and Subaru. Monthly Notices of the Royal Astronomical Society, 457(1), 666-675. https://doi.org/10.1093/mnras/stv2993
  24. Chen, G. C. -F., Suyu, S. H., Wong, K. C., Fassnacht, C. D., Chiueh, T., Halkola, A., Hu, I. S., Auger, M. W., Koopmans, L. V. E., Lagattuta, D. J., McKean, J. P., & Vegetti, S. (2016). SHARP - III. First use of adaptive-optics imaging to constrain cosmology with gravitational lens time delays. Monthly Notices of the Royal Astronomical Society, 462, 3457-3475. https://doi.org/10.1093/mnras/stw991
  25. 2015
  26. Jelic, V., de Bruyn, A. G., Pandey, V. N., Mevius, M., Haverkorn, M., Brentjens, M. A., Koopmans, L. V. E., Zaroubi, S., Abdalla, F. B., Asad, K. M. B., Bus, S., Chapman, E., Ciardi, B., Fernandez, E. R., Ghosh, A., Harker, G., Iliev, I. T., Jensen, H., Kazemi, S., ... Yatawatta, S. (2015). Linear polarization structures in LOFAR observations of the interstellar medium in the 3C 196 field. Astronomy & astrophysics, 583, [A137]. https://doi.org/10.1051/0004-6361/201526638
  27. Jelic, V., de Bruyn, A. G., Pandey, V. N., Mevius, M., Haverkorn, M., Brentjens, M. A., Koopmans, L. V. E., Zaroubi, S., Abdalla, F. B., Asad, K. M. B., Bus, S., Chapman, E., Ciardi, B., Fernandez, E. R., Ghosh, A., Harker, G., Iliev, I. T., Jensen, H., Kazemi, S., ... Yatawatta, S. (2015). VizieR Online Data Catalog: LOFAR-HBA 3C196 field RM cubes (Jelic+, 2015). VizieR On-line Data Catalog, 358, 30137. http://adsabs.harvard.edu/abs/2015yCat..35830137J
  28. Zaroubi, S., Jelić, V., de Bruyn, A. G., Boulanger, F., Bracco, A., Kooistra, R., Alves, M. I. R., Brentjens, M. A., Ferrière, K., Ghosh, T., Koopmans, L. V. E., Levrier, F., Miville-Deschênes, M-A., Montier, L., Pandey, V. N., & Soler, J. D. (2015). Galactic interstellar filaments as probed by LOFAR and Planck. Monthly Notices of the Royal Astronomical Society. Letters, 454(1), L46-L50. https://doi.org/10.1093/mnrasl/slv123
  29. Ciardi, B., Inoue, S., Abdalla, F. B., Asad, K., Bernardi, G., Bolton, J. S., Brentjens, M., de Bruyn, A. G., Chapman, E., Daiboo, S., Fernandez, E. R., Ghosh, A., Graziani, L., Harker, G. J. A., Iliev, I. T., Jelić, V., Jensen, H., Kazemi, S., Koopmans, L. V. E., ... Zaroubi, S. (2015). Simulating the 21 cm forest detectable with LOFAR and SKA in the spectra of high-z GRBs. Monthly Notices of the Royal Astronomical Society, 453(1), 101-105. https://doi.org/10.1093/mnras/stv1640
  30. Heald, G. H., Pizzo, R. F., Orrú, E., Breton, R. P., Carbone, D., Ferrari, C., Hardcastle, M. J., Jurusik, W., Macario, G., Mulcahy, D., Rafferty, D., Asgekar, A., Brentjens, M., Fallows, R. A., Frieswijk, W., Toribio, M. C., Adebahr, B., Arts, M., Bell, M. R., ... Zarka, P. (2015). The LOFAR Multifrequency Snapshot Sky Survey (MSSS). I. Survey description and first results. Astronomy and astrophysics, 582, [A123]. https://doi.org/10.1051/0004-6361/201425210
  31. Sotomayor-Beltran, C., Sobey, C., Hessels, J. W. T., de Bruyn, G., Noutsos, A., Alexov, A., Anderson, J., Asgekar, A., Avruch, I. M., Beck, R., Bell, M. E., Bell, M. R., Bentum, M. J., Bernardi, G., Best, P., Birzan, L., Bonafede, A., Breitling, F., Broderick, J., ... Zarka, P. (2015). Calibrating high-precision Faraday rotation measurements for LOFAR and the next generation of low-frequency radio telescopes (Corrigendum). Astronomy and astrophysics, 581, [C4]. https://doi.org/10.1051/0004-6361/201220728e
  32. Asad, K. M. B., Koopmans, L. V. E., Jelic, V., Pandey, V. N., Ghosh, A., Abdalla, F. B., Bernardi, G., Brentjens, M. A., de Bruyn, A. G., Bus, S., Ciardi, B., Chapman, E., Daiboo, S., Fernandez, E. R., Harker, G., Iliev, I. T., Jensen, H., Martinez-Rubi, O., Mellema, G., ... Zaroubi, S. (2015). Polarization leakage in epoch of reionization windows - I. Low Frequency Array observations of the 3C196 field. Monthly Notices of the Royal Astronomical Society, 451(4), 3709-3727. https://doi.org/10.1093/mnras/stv1107
  33. Napolitano, N. R., Covone, G., Roy, N., Tortora, C., Barbera, F. L., Radovich, M., Getman, F., Capaccioli, M., Colonna, A., Paolillo, M., Kleijn, G. A. V., Koopmans, L. V. E., & KiDS collaboration (2015). Strong lens search in the ESO public Survey KiDS. In N. R. Napolitano, G. Longo, M. Marconi, M. Paolillo, & E. Lodice (Eds.), The Universe of Digital Sky Surveys (Vol. 42, pp. 129-133). Springer. https://doi.org/10.1007/978-3-319-19330-4_20
  34. Vedantham, H. K., Koopmans, L. V. E., de Bruyn, A. G., Wijnholds, S. J., Brentjens, M., Abdalla, F. B., Asad, K. M. B., Bernardi, G., Bus, S., Chapman, E., Ciardi, B., Daiboo, S., Fernandez, E. R., Ghosh, A., Harker, G., Jelic, V., Jensen, H., Kazemi, S., Lambropoulos, P., ... Zarka, P. (2015). Lunar occultation of the diffuse radio sky: LOFAR measurements between 35 and 80 MHz. Monthly Notices of the Royal Astronomical Society, 450(3), 2291-2305. https://doi.org/10.1093/mnras/stv746
  35. Koopmans, L., Pritchard, J., Mellema, G., Aguirre, J., Ahn, K., Barkana, R., van Bemmel, I., Bernardi, G., Bonaldi, A., Briggs, F., de Bruyn, A. G., Chang, T. C., Chapman, E., Chen, X., Ciardi, B., Dayal, P., Ferrara, A., Fialkov, A., Fiore, F., ... Trott, C. (2015). The Cosmic Dawn and Epoch of Reionisation with SKA. In Proceedings of science https://ui.adsabs.harvard.edu/abs/2015aska.confE...1K
  36. Shu, Y., Bolton, A. S., Brownstein, J. R., Montero-Dorta, A. D., Koopmans, L. V. E., Treu, T., Gavazzi, R., Auger, M. W., Czoske, O., Marshall, P. J., & Moustakas, L. A. (2015). The Sloan Lens ACS Survey. XII. Extending Strong Lensing to Lower Masses. The Astrophysical Journal, 803(2), 71-87. https://doi.org/10.1088/0004-637X/803/2/71

ID: 177556