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. 2015
  2. 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. Proceedings of Advancing Astrophysics with the Square Kilometre Array , 1.
  3. 2014
  4. Rusu, C., Fassnacht, C., Treu, T., Suyu, S., Auger, M., Koopmans, L., Marshall, P., Wong, K., Collett, T., Agnello, A., Blandford, R., Courbin, F., Hilbert, S., Meylan, G., & Sluse, D. (2014). Quantifying the line-of-sight mass distributions for time-delay lenses with stellar masses. Spitzer Proposal, 11125. http://adsabs.harvard.edu/abs/2014sptz.prop11125R
  5. Patil, A. H., Zaroubi, S., Chapman, E., Jelic, V., Harker, G., Abdalla, F. B., Asad, K. M. B., Bernardi, G., Brentjens, M. A., de Bruyn, A. G., Bus, S., Ciardi, B., Daiboo, S., Fernandez, E. R., Ghosh, A., Jensen, H., Kazemi, S., Koopmans, L. V. E., Labropoulos, P., ... Yatawatta, S. (2014). Constraining the epoch of reionization with the variance statistic: simulations of the LOFAR case. Monthly Notices of the Royal Astronomical Society, 443(2), 1113-1124. https://doi.org/10.1093/mnras/stu1178
  6. Jelic, V., de Bruyn, A. G., Mevius, M., Abdalla, F. B., Asad, K. M. B., Bernardi, G., Brentjens, M. A., Bus, S., Chapman, E., Ciardi, B., Daiboo, S., Fernandez, E. R., Ghosh, A., Harker, G., Jensen, H., Kazemi, S., Koopmans, L. V. E., Labropoulos, P., Martinez-Rubi, O., ... Zarka, P. (2014). Initial LOFAR observations of epoch of reionization windows. II. Diffuse polarized emission in the ELAIS-N1 field. Astronomy & astrophysics, 568. https://doi.org/10.1051/0004-6361/201423998
  7. Haas, M., Leipski, C., Barthel, P., Wilkes, B. J., Vegetti, S., Bussmann, R. S., Willner, S. P., Westhues, C., Ashby, M. L. N., Chini, R., Clements, D. L., Fassnacht, C. D., Horesh, A., Klaas, U., Koopmans, L. V. E., Kuraszkiewicz, J., Lagattuta, D. J., Meisenheimer, K., Stern, D., & Wylezalek, D. (2014). 3C 220.3: A Radio Galaxy Lensing a Submillimeter Galaxy. The Astrophysical Journal, 790(1). http://adsabs.harvard.edu/abs/2014ApJ...790...46H
  8. Joseph, R., Courbin, F., Metcalf, R. B., Giocoli, C., Hartley, P., Jackson, N., Bellagamba, F., Kneib, J-P., Koopmans, L., Lemson, G., Meneghetti, M., Meylan, G., Petkova, M., & Pires, S. (2014). A PCA-based automated finder for galaxy-scale strong lenses. Astronomy & astrophysics, 566, [A63]. https://doi.org/10.1051/0004-6361/201423365
  9. Suyu, S. H., Treu, T., Hilbert, S., Sonnenfeld, A., Auger, M. W., Blandford, R. D., Collett, T., Courbin, F., Fassnacht, C. D., Koopmans, L. V. E., Marshall, P. J., Meylan, G., Spiniello, C., & Tewes, M. (2014). Cosmology from Gravitational Lens Time Delays and Planck Data. The Astrophysical Journal, 788(2), L35-L40. https://doi.org/10.1088/2041-8205/788/2/L35
  10. Ghosh, A., & Koopmans, L. V. E. (2014). Maximum likelihood inversion of simulated LOFAR data. In S. Rajiva (Ed.), Astronomical Society of India Conference Series (Vol. 13, pp. 319-320). D. J. Saikia, NCRA, TIFR for the Astronomical Society of India.
  11. Koopmans, L. V. E. (2014). The dark ages, cosmic dawn and epoch of reionization seen at radio wavelengths. In Astronomical Society of India Conference Series (Vol. 13, pp. 219-225)
  12. Courteau, S., Cappellari, M., de Jong, R. S., Dutton, A. A., Emsellem, E., Hoekstra, H., Koopmans, L. V. E., Mamon, G. A., Maraston, C., Treu, T., & Widrow, L. M. (2014). Galaxy masses. Reviews of Modern Physics, 86, 47-119. https://doi.org/10.1103/RevModPhys.86.47
  13. Brentjens, M. A., Yatawatta, S., Pandey, V., Jelic, V., de Bruyn, A. G., Koopmans, L., & Zaroubi, S. (2014). Micro-Jy imaging at 150 MHz for the LOFAR EoR project. In American Astronomical Society Meeting Abstracts (pp. 127.05) http://adsabs.harvard.edu/abs/2014AAS...22312705B
  14. 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. (2014). The Cosmic Dawn and Epoch of Reionisation with SKA. Proceedings of Science, 1. http://adsabs.harvard.edu/abs/2015aska.confE...1K
  15. 2013
  16. Jensen, H., Datta, K. K., Chapman, E., Abdalla, F. B., Iliev, I. T., Mao, Y., Santos, M. G., Shapiro, P. R., Zaroubi, S., Bernardi, G., Brentjens, M. A., de Bruyn, A. G., Ciardi, B., Harker, G. J. A., Jelic, V., Kazemi, S., Koopmans, L. V. E., Labropoulos, P., Martinez, O., ... Mellema, G. (2013). Probing reionization with LOFAR using 21-cm redshift space distortions. Monthly Notices of the Royal Astronomical Society, 435(1), 460-474. https://doi.org/10.1093/mnras/stt1341
  17. Offringa, A. R., de Bruyn, A. G., Zaroubi, S., Koopmans, L. V. E., Wijnholds, S. J., Abdalla, F. B., Brouw, W. N., Ciardi, B., Iliev, I. T., Harker, G. J. A., Bernardi, G., Zarka, P., Ghosh, A., Alexov, A., Anderson, J., Asgekar, A., Avruch, I. M., Beck, R., Bell, M. E., ... Mellema, G. (2013). The brightness and spatial distributions of terrestrial radio sources. Monthly Notices of the Royal Astronomical Society, 435(1), 584-596. https://doi.org/10.1093/mnras/stt1337
  18. Martinez-Rubi, O., Veligatla, V. K., de Bruyn, A. G., Lampropoulos, P., Offringa, A. R., Jelic, V., Yatawatta, S., Koopmans, L. V. E., & Zaroubi, S. (2013). LEDDB: LOFAR Epoch of Reionization Diagnostic Database. In Astronomical Data Analysis Software and Systems XXII: Proceedings of a Conference held at University of Illinois, Champaign, Illinois, USA 4-8 November 2012. San Francisco: Astronomical Society of the Pacific (pp. 377-378). http://adsabs.harvard.edu/abs/2013ASPC..475..377M
  19. Iacobelli, M., Haverkorn, M., Orru, E., Pizzo, R. F., Anderson, J., Beck, R., Bell, M. R., Bonafede, A., Chyzy, K., Dettmar, R. -J., Ensslin, T. A., Heald, G., Horellou, C., Horneffer, A., Jurusik, W., Junklewitz, H., Kuniyoshi, M., Mulcahy, D. D., Paladino, R., ... Zensus, A. (2013). Studying Galactic interstellar turbulence through fluctuations in synchrotron emission First LOFAR Galactic foreground detection. Astronomy & astrophysics, 558, [A72]. https://doi.org/10.1051/0004-6361/201322013
  20. Klein Wolt, M., Aminaei, A., Pourshaghaghi, H., Koopmans, L., & Falcke, H. (2013). Low-frequency cosmology from the moon. EPSC Abstracts, 8, [EPSC2013-152]. http://adsabs.harvard.edu/abs/2013EPSC....8..152K
  21. van Haarlem, M. P., Wise, M. W., Gunst, A. W., Heald, G., McKean, J. P., Hessels, J. W. T., de Bruyn, A. G., Nijboer, R., Swinbank, J., Fallows, R., Brentjens, M., Nelles, A., Beck, R., Falcke, H., Fender, R., Horandel, J., Koopmans, L. V. E., Mann, G., Miley, G., ... Kooistra, E. (2013). LOFAR: The LOw-Frequency ARray. Astronomy & astrophysics, 556, [A2]. https://doi.org/10.1051/0004-6361/201220873
  22. Koopmans, L. V. E., Abdalla, F. A., Bernardi, G., Ciardi, B., Daiboo, S., de Bruyn, A. G., Datta, K. K., Falcke, H., Ferrara, A., Iliev, I. T., Iocco, F., Jelic, V., Jensen, H., Joseph, R., Labroupoulos, P., Meiksin, A., Mesinger, A., Offringa, A. R., Pandey, V. N., ... Mellema, G. (2013). Reionization and the Cosmic Dawn with the Square Kilometre Array. Experimental Astronomy, 36(1), 235-318. https://doi.org/10.1007/s10686-013-9334-5
  23. Wiersma, R. P. C., Ciardi, B., Thomas, R. M., Harker, G. J. A., Zaroubi, S., Bernardi, G., Brentjens, M., de Bruyn, A. G., Daiboo, S., Jelic, V., Kazemi, S., Koopmans, L. V. E., Labropoulos, P., Martinez, O., Offringa, A., Pandey, V. N., Schaye, J., Veligatla, V., Vedantham, H., ... Mellema, G. (2013). LOFAR insights into the epoch of reionization from the cross-power spectrum of 21 cm emission and galaxies. Monthly Notices of the Royal Astronomical Society, 432(3), 2615-2624. https://doi.org/10.1093/mnras/stt624
  24. Collett, T. E., Marshall, P. J., Auger, M. W., Hilbert, S., Suyu, S. H., Greene, Z., Treu, T., Fassnacht, C. D., Koopmans, L. V. E., Bradac, M., & Blandford, R. D. (2013). Reconstructing the lensing mass in the Universe from photometric catalogue data. Monthly Notices of the Royal Astronomical Society, 432(1), 679-692. https://doi.org/10.1093/mnras/stt504
  25. Greene, Z. S., Suyu, S. H., Treu, T., Hilbert, S., Auger, M. W., Collett, T. E., Marshall, P. J., Fassnacht, C. D., Blandford, R. D., Bradac, M., & Koopmans, L. V. E. (2013). Improving the Precision of Time-delay Cosmography with Observations of Galaxies along the Line of Sight. Astrophysical Journal, 768(1), [39]. https://doi.org/10.1088/0004-637X/768/1/39
  26. Suyu, S. H., Auger, M. W., Hilbert, S., Marshall, P. J., Tewes, M., Treu, T., Fassnacht, C. D., Koopmans, L. V. E., Sluse, D., Blandford, R. D., Courbin, F., & Meylan, G. (2013). Two Accurate Time-delay Distances from Strong Lensing: Implications for Cosmology. Astrophysical Journal, 766(2), [70]. https://doi.org/10.1088/0004-637X/766/2/70
  27. 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. (2013). Calibrating high-precision Faraday rotation measurements for LOFAR and the next generation of low-frequency radio telescopes. Astronomy & astrophysics, 552, [A58]. https://doi.org/10.1051/0004-6361/201220728
  28. 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., ... Yatawatta, S. (2013, Mar 1). ionFR: Ionospheric Faraday rotation.
  29. Chapman, E., Abdalla, F. B., Bobin, J., Starck, J-L., Harker, G., Jelic, V., Labropoulos, P., Zaroubi, S., Brentjens, M. A., de Bruyn, A. G., & Koopmans, L. V. E. (2013). The scale of the problem: Recovering images of reionization with Generalized Morphological Component Analysis. Monthly Notices of the Royal Astronomical Society, 429(1), 165-176. https://doi.org/10.1093/mnras/sts333
  30. Fassnacht, C., Suyu, S., Treu, T., Auger, M., Koopmans, L., & Marshall, P. (2013). Quantifying the line-of-sight mass distributions to time-delay lenses. NOAO Proposal, 2013.
  31. Dutton, A. A., Treu, T., Brewer, B. J., Marshall, P. J., Auger, M. W., Barnabe, M., Koo, D. C., Bolton, A. S., & Koopmans, L. V. E. (2013). The SWELLS survey: V. A Salpeter stellar initial mass function in the bulges of massive spiral galaxies. Monthly Notices of the Royal Astronomical Society, 428(4), 3183-3195. https://doi.org/10.1093/mnras/sts262
  32. Yatawatta, S., de Bruyn, A. G., Brentjens, M. A., Labropoulos, P., Pandey, V. N., Kazemi, S., Zaroubi, S., Koopmans, L. V. E., Offringa, A. R., Jelic, V., Rubi, O. M., Veligatla, V., Wijnholds, S. J., Brouw, W. N., Bernardi, G., Ciardi, B., Daiboo, S., Harker, G., Schaye, J., ... Mellema, G. (2013). Initial deep LOFAR observations of epoch of reionization windows. I. The north celestial pole: I. The north celestial pole. Astronomy & astrophysics, 550, [A136]. https://doi.org/10.1051/0004-6361/201220874
  33. Ciardi, B., Labropoulos, P., Maselli, A., Thomas, R., Zaroubi, S., Graziani, L., Bolton, J. S., Bernardi, G., Brentjens, M., de Bruyn, A. G., Daiboo, S., Harker, G. J. A., Jelic, V., Kazemi, S., Koopmans, L. V. E., Martinez, O., Offringa, A. R., Pandey, V. N., Schaye, J., ... Mellema, G. (2013). Prospects for detecting the 21 cm forest from the diffuse intergalactic medium with LOFAR. Monthly Notices of the Royal Astronomical Society, 428(2), 1755-1765. https://doi.org/10.1093/mnras/sts156
  34. Offringa, A. R., de Bruyn, A. G., Zaroubi, S., van Diepen, G., Martinez-Ruby, O., Labropoulos, P., Brentjens, M. A., Ciardi, B., Daiboo, S., Harker, G., Jelic, V., Kazemi, S., Koopmans, L. V. E., Pandey, V. N., Pizzo, R. F., Schaye, J., Vedantham, H., Veligatla, V., Wijnholds, S. J., ... Mellema, G. (2013). The LOFAR radio environment. Astronomy & astrophysics, 549, [A11]. https://doi.org/10.1051/0004-6361/201220293
  35. Courteau, S., Cappellari, M., Jong, R. S. D., Dutton, A. A., & Koopmans, L. V. E. (2013). Galaxy Masses: A Review. Elsevier.
  36. 2012
  37. Zaroubi, S., de Bruyn, A. G., Harker, G., Thomas, R. M., Labropolous, P., Jelic, V., Koopmans, L. V. E., Brentjens, M. A., Bernardi, G., Ciardi, B., Daiboo, S., Kazemi, S., Martinez-Rubi, O., Offringa, A. R., Pandey, V. N., Schaye, J., Veligatla, V., Vedantham, H., Yatawatta, S., & Mellema, G. (2012). Imaging neutral hydrogen on large scales during the Epoch of Reionization with LOFAR. Monthly Notices of the Royal Astronomical Society, 425(4), 2964-2973. https://doi.org/10.1111/j.1365-2966.2012.21500.x
  38. van Weeren, R. J., Rottgering, H. J. A., Rafferty, D. A., Pizzo, R., Bonafede, A., Brueggen, M., Brunetti, G., Ferrari, C., Orru, E., Heald, G., McKean, J. P., Tasse, C., de Gasperin, F., Birzan, L., van Zwieten, J. E., van der Tol, S., Shulevski, A., Jackson, N., Offringa, A. R., ... de Vos, M. (2012). First LOFAR observations at very low frequencies of cluster-scale non-thermal emission: The case of Abell 2256. Astronomy & astrophysics, 543, [A43]. https://doi.org/10.1051/0004-6361/201219154
  39. Chapman, E., Abdalla, F. B., Harker, G., Jelic, V., Labropoulos, P., Zaroubi, S., Brentjens, M. A., de Bruyn, A. G., & Koopmans, L. V. E. (2012). Foreground removal using fastica: A showcase of LOFAR-EoR. Monthly Notices of the Royal Astronomical Society, 423(3), 2518-2532. https://doi.org/10.1111/j.1365-2966.2012.21065.x
  40. Hassall, T. E., Stappers, B. W., Hessels, J. W. T., Kramer, M., Alexov, A., Anderson, K., Coenen, T., Karastergiou, A., Keane, E. F., Kondratiev, V. I., Lazaridis, K., van Leeuwen, J., Noutsos, A., Serylak, M., Sobey, C., Verbiest, J. P. W., Weltevrede, P., Zagkouris, K., Fender, R., ... Jonker, P. (2012). Wide-band simultaneous observations of pulsars: disentangling dispersion measure and profile variations. Astronomy & astrophysics, 543, [A66]. https://doi.org/10.1051/0004-6361/201218970
  41. Sonnenfeld, A., Treu, T., Gavazzi, R., Marshall, P. J., Auger, M. W., Suyu, S. H., Koopmans, L. V. E., & Bolton, A. S. (2012). Evidence for Dark Matter Contraction and a Salpeter Initial Mass Function in a Massive Early-type Galaxy. Astrophysical Journal, 752(2), [163]. https://doi.org/10.1088/0004-637X/752/2/163

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