prof. dr. L.V.E. (Léon) Koopmans

Professor, Scientific Director of the Kapteyn Astronomical Institute

prof. dr. L.V.E. (Léon) Koopmans


Postal address:
Gebouw 5419, ruimte 0160
9747 AD
Phone: +31 50 363 6519Fax: +31 50 363 6100
  1. 2018
  2. Mouri Sardarabadi, A., van der Veen, A-J., & Koopmans, L. V. E. (2018). Efficient Calibration of Radio Interferometers Using Block LDU Decomposition. In 2018 26th European Signal Processing Conference (EUSIPCO) (pp. 2688-2692). IEEE.
  3. Mouri Sardarabadi, A., van der Veen, A-J., & Koopmans, L. V. E. (2018). Constrained Least Squares for Extended Complex Factor Analysis. In 2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop (SAM) (pp. 169-173). IEEE.
  4. Koopmans, L. V. E., & Team, LOFAR. E. KSP. (2018). Current Status of the LOFAR EoR Key Science Project. In V. Jeli, & T. van der Hulst (Eds.), Peering towards Cosmic Dawn (Vol. 333, pp. 71-76). (IAU Symposium S333; Vol. 12). International Astronomical Union.
  5. 2016
  6. 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)
  7. 2015
  8. 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.
  9. 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
  10. 2014
  11. 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.
  12. 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)
  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)
  14. 2013
  15. 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).
  16. 2012
  17. Barnabè, M., Koopmans, L., Czoske, O., Treu, T., Dutton, A., Auger, M., Marshall, P., Brewer, B., & Bolton, A. (2012). CAULDRON: Combining lensing and dynamics. In Dynamics Meets Kinematic Tracers (pp. 14)
  18. Moustakas, L. A., Brownstein, J., Fadely, R., Fassnacht, C. D., Gavazzi, R., Goodsall, T., Griffith, R. L., Keeton, C. R., Kneib, J. P., Koekemoer, A., Koopmans, L. V. E., Marshall, P. J., Merten, J., Metcalf, R. B., Oguri, M., Papovich, C., Rein, H., Ryan, R., Stewart, K. R., & Treu, T. (2012). The Orphan Lenses Project. In American Astronomical Society Meeting Abstracts (pp. 146.01)
  19. 2010
  20. Koopmans, L. V. E. (2010). Dark-Matter in Galaxies from Gravitational Lensing and Stellar Dynamics Studies. In IF. Corbett (Ed.), Highlights of Astronomy (Vol. 15, pp. 74). (IAU Symposium Proceedings Series; Vol. 5, No. H15). Cambridge University Press.
  21. Koopmans, L. V. E., & Treu, T. (2010). JD1-Dark Matter in Early-type Galaxies: Overview. In IF. Corbett (Ed.), Highlights of Astronomy (Vol. 15, pp. 61-64). (IAU Symposium Proceedings Series; Vol. 15). Cambridge University Press.
  22. 2009
  23. Koopmans, L. V. E., Barnabe, M., Bolton, A., Bradac, M., Ciotti, L., Congdon, A., Czoske, O., Dye, S., Dutton, A., Elliasdottir, A., Evans, E., Fassnacht, C. D., Jackson, N., Keeton, C., Lasio, J., Moustakas, L., Meneghetti, M., Myers, S., Nipoti, C., ... Zhao, H. -S. (2009). Strong Gravitational Lensing as a Probe of Gravity, Dark-Matter and Super-Massive Black Holes. In astro2010: The Astronomy and Astrophysics Decadal Survey (Vol. 2010, pp. 159)
  24. Moustakas, L. A., Abazajian, K., Benson, A., Bolton, A. S., Bullock, J. S., Chen, J., Cheng, E., Coe, D., Congdon, A. B., Dalal, N., Diemand, J., Dobke, B. M., Dobler, G., Dore, O., Dutton, A., Ellis, R., Fassnacht, C. D., Ferguson, H., Finkbeiner, D., ... Zentner, A. (2009). Strong gravitational lensing probes of the particle nature of dark matter. In astro2010: The Astronomy and Astrophysics Decadal Survey (Vol. 2010, pp. 214)
  25. Czoske, O., Barnabe, M., & Koopmans, L. V. E. (2009). Integral-Field Spectroscopy of SLACS Lenses. In LA. Antonelli, M. Limongi, N. Menci, A. Tornambe, E. Brocato, & G. Raimondo (Eds.), PROBING STELLAR POPULATIONS OUT TO THE DISTANT UNIVERSE (pp. 137-140). (AIP Conference Proceedings; Vol. 1111). AMER INST PHYSICS.
  26. Yatawatta, S., Zaroubi, S., de Bruyn, G., Koopmans, L., & Noordam, J. (2009). Radio Interferometric Calibration Using The SAGE Algorithm. In 2009 IEEE 13TH DIGITAL SIGNAL PROCESSING WORKSHOP & 5TH IEEE PROCESSING EDUCATION WORKSHOP, VOLS 1 AND 2, PROCEEDINGS (pp. 150-155). IEEE (The Institute of Electrical and Electronics Engineers).
  27. 2008
  28. Koopmans, L. V. E. (2008). Strong Gravitational Lensing: Bright Galaxies amp; Lost Dark-Matter. In J. I. Davies, & M. J. Disney (Eds.), Dark Galaxies and Lost Baryons (Vol. 244, pp. 196-205). (IAU Symposium).
  29. 2006
  30. Suyu, S. H., Blandford, R. D., Fassnacht, C. D., Koopmans, L. V., Marshall, P. J., McKean, J. P., & Treu, T. (2006). HST ACS Observations of the Gravitational Lens B1608+656. In American Astronomical Society Meeting Abstracts (Vol. 209, pp. 21.02)
  31. Koopmans, L. (2006). Joint Lensing and Stellar Dynamics of Galaxies. In KITP Conference: Applications of Gravitational Lensing: Unique Insights into Galaxy Formation and Evolution (pp. 20)
  32. Koopmans, L. V. E. (2006). Gravitational lensing & stellar dynamics. In GA. Mamon, F. Combes, C. Deffayet, & B. Fort (Eds.), Mass Profiles and Shapes of Cosmological Structures (pp. 161-166). (EAS PUBLICATIONS SERIES; Vol. 20). E D P SCIENCES.
  33. Koopmans, L. (2006). Strong Gravitational Lensing: Galaxy Structure and Evolution. In "Proceedings of Bernard's Cosmic Stories: from primordial fluctuations to the birth of stars and galaxies (pp. 35). UIMP.
  34. 2005
  35. Fassnacht, C., Lubin, L., McKean, J., Gal, R., Squires, G., Koopmans, L., Treu, T., Blandford, R., & Rusin, D. (2005). Galaxy Groups Associated with Gravitational Lenses and H0 from B1608+656. In Y. Mellier, & G. Meylan (Eds.), Impact of gravitational lensing on cosmology: Proceedings of the 225th Symposium of the International Astronomical Union held at the Ecole Polytechnique Federale de Lausanne Switzerland July 19-23, 2004 (Vol. 225, pp. 311-317). (Proceedings of the International Astronomical Union; Vol. 225). Cambridge University Press.
  36. Koopmans, L. V. E., de Bruyn, A. G., Fassnacht, C. D., Wambsganss, J., Blandford, R. D., & Collaboration, C. (2005). Radio Microlensing: Past, Present amp; Near Future. In A. N. Lasenby, & A. Wilkinson (Eds.), New Cosmological Data and the Values of the Fundamental Parameters (Vol. 201, pp. 478). (IAU Symposium).
  37. 2004
  38. Treu, T., Koopmans, L. V. E., Sand, D. J., Smith, G. P., & Ellis, R. S. (2004). The dark matter halos of spheroidal galaxies and clusters of galaxies. In S. Ryder, D. Pisano, M. Walker, & K. Freeman (Eds.), Dark Matter in Galaxies: Proceedings, IAU Symposium 220 (Vol. 220, pp. 159). (ASP Conference series; Vol. 220). ASP.
  39. Koopmans, L. V. E., & Treu, T. (2004). The Lenses Structure and Dynamics Survey. In M. Plionis (Ed.), Multiwavelength Cosmology: Proceedings of the “Multiwavelength Cosmology” Conference, held on Mykonos Island, Greece, 17–20 June, 2003 (pp. 23-26). ( Astrophysics and Space Science Library book series ; Vol. 301). Springer.
  40. 2003
  41. Treu, T., & Koopmans, L. V. E. (2003). The internal structure of high-Z E/S0 galaxies from LSD. In C. M. Boily, P. Patsis, S. Portegies Zwart, R. Spurzem, & C. Theis (Eds.), EAS Publications Series (Vol. 10, pp. 61). EDP Sciences.
  42. 2002
  43. Koopmans, L. V. E., & Blandford, R. D. (2002). White Dwarfs: Contributors and Tracers of the Galactic Dark-Matter Halo. In P. Natarajan (Ed.), The Shapes of Galaxies and their Dark Halos (pp. 150-153). World Scientific Publishing.
  44. 2001
  45. Biggs, A. D., Browne, I. W. A., Wilkinson, P. N., Muxlow, T. W. B., Helbig, P., & Koopmans, L. V. E. (2001). B0218+357: Time Delays and New MERLIN/VLA 5 GHz Maps of the Einstein Ring. In T. G. Brainerd, & C. S. Kochanek (Eds.), Gravitational Lensing: Recent Progress and Future Go (Vol. 237, pp. 137). Astronomical Society of the Pacific.
  46. Xanthopoulos, E., Browne, I. W. A., Wilkinson, P. N., Jackson, N. J., Karidis, A., Porcas, R. W., Patnaik, A. R., Koopmans, L. V. E., & Marlow, D. R. (2001). Everything You Ever Wanted to Know about the JVAS Gravitational Lens System B1030+074 but were Afraid to Ask. In T. G. Brainerd, & C. S. Kochanek (Eds.), Gravitational Lensing: Recent Progress and Future Go (Vol. 237, pp. 109). Astronomical Society of the Pacific.
  47. Fassnacht, C. D., Xanthopoulos, E., Koopmans, L. V. E., Pearson, T. J., Readhead, A. C. S., & Myers, S. T. (2001). Measuring H$_0$ with CLASS B1608+656: The Second Season of VLA Monitoring. In T. G. Brainerd, & C. S. Kochanek (Eds.), Gravitational Lensing: Recent Progress and Future Go (Vol. 237, pp. 121). Astronomical Society of the Pacific.
  48. Koopmans, L. V. E. (2001). Radio-Microlensing in B1600+434: Probing MACHOs at High-Redshifts. In J. Tran Thanh Van, Y. Mellier, & M. Moniez (Eds.), Cosmological Physics with Gravitational Lensing (pp. 99). (Moriond astrophysics meetings). EDP Sciences.
  49. Koopmans, LE., de Bruyn, AG., Wambsganss, J., & Fassnacht, CD. (2001). A radio-microlensing caustic crossing in B1600+434? In JW. Menzies, & PD. Sackett (Eds.), MICROLENSING 2000: A NEW ERA OF MICROLENSING ASTROPHYSICS (pp. 363-371). (ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES; Vol. 239). ASTRONOMICAL SOC PACIFIC.
  50. Koopmans, LVE., & de Bruyn, AG. (2001). Microlensing & scintillation of gravitationally lensed compact radio sources: Evidence for MACHOs? In TG. Brainerd, & CS. Kochanek (Eds.), GRAVITATIONAL LENSING: RECENT PROGRESS AND FUTURE GOALS (pp. 193-196). (ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES; Vol. 237). ASTRONOMICAL SOC PACIFIC.
  51. 2000
  52. Koopmans, L. V. E., & de Bruyn, A. G. (2000). Micro amp: Strong Lensing with the Square Kilometer Array: the Mass- Function of Compact Objects in High-Redshift Galaxies. In M. P. van Haarlem (Ed.), Perspectives on Radio Astronomy: Science with Large Antenna Arrays (pp. 213). Netherlands Institute for Radio Astronomy (ASTRON).
  53. 1999
  54. Xanthopoulos, E., Browne, IWA., King, LJ., Jackson, NJ., Marlow, DR., Wilkinson, PN., Koopmans, LVE., Patnaik, AR., & Porcas, RW. (1999). The gravitational lens system B1030+074. Discovery and follow-up. In Y. Terzian, D. Weedman, & E. Khachikian (Eds.), ACTIVE GALACTIC NUCLEI AND RELATED PHENOMENA (pp. 373-378). (IAU SYMPOSIA). ASTRONOMICAL SOC PACIFIC.
  55. 1998
  56. Koopmans, LVE., de Bruyn, AG., & Jackson, N. (1998). The edge-on spiral gravitational lens B1600+434. In Muller, S. Gottlober, JP. Mucket, & J. Wambsganss (Eds.), LARGE SCALE STRUCTURE: TRACKS AND TRACES (pp. 325-326). World Scientific Publishing.

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