  | Claeskens, J.-F., Gosset, E., Nazé, Y., Rauw, G., & Vreux, J.-M. (01 January 2011). A search for X-ray sources around WR 22 in the Carina region. Astronomy and Astrophysics, 525, 142. doi:10.1051/0004-6361/201014238  Peer Reviewed verified by ORBi |
 | Claeskens, J.-F., Sluse, D., & Surdej, J. (2010). HST Observations of Gravitationally Lensed QSOs. In D. F. Macchetto (Ed.), The Impact of HST on European Astronomy (pp. 191-195). doi:10.1007/978-90-481-3400-7_34 |
 | Surdej, J., Claeskens, J.-F., Delacroix, C., Sadibekova, T., Bartczak, P., Coleman, P. H. I., Magette, A., Poels, J., Ricci, D., & Sluse, D. (2008). Gravitational Lensing, Dark Matter and the Optical Gravitational Lens Experiment. In N. Matagne, J. Cugnon, ... J.-P. Lansberg (Eds.), American Institute of Physics Conference Proc. Volume 1038 (pp. 173-182). doi:10.1063/1.2987170 |
 | Garcia, P. J. V., Berger, J.-P., Marconi, A., Krivov, A., Chiavassa, A., Aringer, B., Nisini, B., Defrere, D., Mawet, D., Schertl, D., Tatuli, E., Thiébaut, E., Baron, F., Malbet, F., Duchéne, G., Weigelt, G., Duvert, G., Henri, G., Klahr, H., ... Bonfils, X. (2008). Science case for 1 mas spectro-imagining in the near-infrared. In M. Schöller, W. Danchi, ... F. Delplancke (Eds.), Optical and Infrared Interferometry (pp. 4N.1-4N.14). Bellingham, United States - Washington: SPIE. doi:10.1117/12.789216 |
 | Claeskens, J.-F., Sluse, D., & Surdej, J. (2008). HST observations of gravitationally lensed QSOs. In proceedings of the 41st ESLAB Symposium "The Impact of HST on European Astronomy" (June 2007). Astrophysics and Space Science Proceedings series edited by Springer. |
 | Sluse, D., Claeskens, J.-F., Hutsemekers, D., & Surdej, J. (2008). Microlensing probes the AGN structure of the lensed quasar J1131-1231. In E. Benítez, I. Cruz-González, ... Y. Krongold (Eds.), Revista Mexicana de Astronomia y Astrofisica (Serie de Conferencias) Vol. 32 (pp. 83-85). |
  | Sluse, D., Eigenbrod, A., Courbin, F., Hutsemekers, D., Claeskens, J.-F., Meylan, G., Agol, E., & Surdej, J. (2008). Microlensing to probe the quasar structure: spectrophotometry of Q2237+0305 and of J1131-1231. In E. Kerins, S. Mao, N. Rattenbury, ... L. Wyrzykowski (Eds.), Proceedings of the Manchester Microlensing Conference: The 12th International Conference and ANGLES Microlensing Workshop. Proceedings of Science, PoS (GMC8)020 (pp. 1-8). |
 | Sluse, D., Claeskens, J.-F., Hutsemekers, D., & Surdej, J. (June 2007). Multi-wavelength study of the gravitational lens system RXS J1131-1231 - III. Long slit spectroscopy: micro-lensing probes the QSO structure. Astronomy and Astrophysics, 468 (3), 885-901. doi:10.1051/0004-6361:20066821 Peer Reviewed verified by ORBi |
 | Meisenheimer, K., Hutsemekers, D., Tacconi, L., Claeskens, J.-F., Contursi, A., Dannerbauer, H., Fan, X., Genzel, R., Haas, M., Klaas, Krause, O., Lemke, D., Lutz, D., Nakos, T., Poglitsch, A., Sturm, E., Stickel, M., & Walter, F. (2007). The Dusty Young Universe: photometry and spectroscopy of quasars at z > 2 [Poster presentation]. Herschel Observation Planning Workshop, ESAC, Madrid, Spain. |
Surdej, J., Bartczak, P., Borkowski, V., Borra, H., Chisogne, J.-P., Claeskens, J.-F., Collin, B., De Becker, M., Defrere, D., Denis, S., Flebus, C., Garcet, G., Gloesener, P., Habraken, S., Lampens, P., Magette, A., Manfroid, J., Mawet, D., Ninane, N., ... Swings, J.-P. (2007). The 4m International Liquid Mirror Telescope (ILMT) (Invited talk) [Paper presentation]. VII International Conference on Relativistic Astrophysics, Gravitation and Cosmology, Kyiv, Ukraine. |
Surdej, J., Absil, O., Bartczak, P., Borra, E., Chisogne, J.-P., Claeskens, J.-F., Collin, B., De Becker, M., Defrere, D., Denis, S., Flebus, C., Garcet, O., Gloesener, P., Jean, C., Lampens, P., Libbrecht, C., Magette, A., Manfroid, J., Mawet, D., ... Swings, J.-P. (2006). The 4m international liquid mirror telescope (ILMT). In L. Stepp (Ed.), Ground-based and Airborne Telescopes (pp. 4). Bellingham, United States - Washington: SPIE. doi:10.1117/12.671695 |
 | Claeskens, J.-F., Sluse, D., Riaud, P., & Surdej, J. (June 2006). Multi wavelength study of the gravitational lens system RXS J1131-1231 - II. Lens model and source reconstruction. Astronomy and Astrophysics, 451 (3), 865-879. doi:10.1051/0004-6361:20054352 Peer Reviewed verified by ORBi |
 | Claeskens, J.-F., Smette, A., Vandenbulcke, L., & Surdej, J. (11 April 2006). Identification and redshift determination of quasi-stellar objects with medium-band photometry: application to Gaia. Monthly Notices of the Royal Astronomical Society, 367 (3), 879-904. doi:10.1111/j.1365-2966.2006.10024.x Peer Reviewed verified by ORBi |
 | Sluse, D., Claeskens, J.-F., Altieri, B., Cabanac, R. A., Garcet, O., Hutsemekers, D., Jean, C., Smette, A., & Surdej, J. (01 April 2006). Multi-wavelength study of the gravitational lens system RXS J113155.4-123155. I. Multi-epoch optical and near infrared imaging. Astronomy and Astrophysics, 449, 539-550. doi:10.1051/0004-6361:20053148 Peer Reviewed verified by ORBi |
 | Surdej, J., Claeskens, J.-F., & Sluse, D. (2006). Invited paper (Collège de France) Gravitational lensing and anomalous redshifts. In J.-C. Pecker & J. Narlikar (Eds.), Current Issues in Cosmology (pp. 223-233). Cambridge, United Kingdom: Cambridge University Press. |
 | Claeskens, J.-F., Smette, A., & Surdej, J. (2005). Quasars with GAIA : identification and astrophysical parameters. |
 | Claeskens, J.-F., Smette, A., & Surdej, J. (2005). Quasars with Gaia: Identification and Astrophysical Parameters. In C. Turon, K. S. O'Flaherty, ... M. A. C. Perryman (Eds.), Proceedings of the Gaia Symposium "The Three-Dimensional Universe with Gaia" (ESA SP-576) (pp. 667-673). |
 | Claeskens, J.-F., Sluse, D., Riaud, P., & Surdej, J. (2005). RXS J1131-1231: a lensed host galaxy at z = 0.66. In J. F. Claeskens, D. Sluse, P. Riaud, ... J. Surdej, Proceedings of the Joint European and National Astronomy Meeting (http://www.astro.ulg.ac.be/RPub/Colloques/JENAM/proceedings/proceedings.html). |
 | Gosset, E., Nazé, Y., Claeskens, J.-F., Rauw, G., Vreux, J.-M., & Sana, H. (January 2005). An XMM-Newton look at the Wolf-Rayet star WR 40 - The star itself, its nebula and its neighbours [letter to the editor]. Astronomy and Astrophysics, 429 (2), 685-704. doi:10.1051/0004-6361:20040286 Peer Reviewed verified by ORBi |
 | Sluse, D., Surdej, J., Claeskens, J.-F., Hutsemekers, D., Jean, C., Courbin, F., Nakos, T., Billeres, M., & Khmil, S. V. (01 July 2003). A quadruply imaged quasar with an optical Einstein ring candidate: 1RXS J113155.4-123155. Astronomy and Astrophysics, 406 (Letters), 43-46. doi:10.1051/0004-6361:20030904 Peer Reviewed verified by ORBi |
Sluse, D., Surdej, J., Hutsemekers, D., & Claeskens, J.-F. (2003). Discovery of a new quadruply imaged quasar surrounded by an Einstein ring [Paper presentation]. Meeting of the FNRS Contact Group ASTRONOMIE & ASTROPHYSIQUE, Bruxelles, Belgium. |
Sluse, D., Claeskens, J.-F., Surdej, J., & Hutsemekers, D. (January 2003). Discovery of a quadruply imaged quasar surrounded by a ring [Paper presentation]. Gravitational Lensing: a unique tool for cosmology. |
 | Sluse, D., Surdej, J., Claeskens, J.-F., De Rop, Y., Lee, D. W., Iovino, A., & Hawkins, M. R. S. (01 January 2003). Close pairs of quasars with different redshifts: New observations and results. Astronomy and Astrophysics, 397, 539-544. doi:10.1051/0004-6361:20021524 Peer Reviewed verified by ORBi |
 | Claeskens, J.-F., & Surdej, J. (March 2002). Gravitational lensing in quasar samples [letter to the editor]. Astronomy and Astrophysics Review, 10 (4), 263-311. doi:10.1007/s001590000010 Peer Reviewed verified by ORBi |
 | Surdej, J., Claeskens, J.-F., & Smette, A. (2002). A complete sample of gravitationally lensed quasars to be detected with GAIA. |
 | Jean, C., Claeskens, J.-F., & Surdej, J. (2001). Gravitational lensing studies with the 4-m International Liquid Mirror Telescope (ILMT) (poster contribution). In T. G. Brainerd & C. S. Kochanek, Proceedings of the Conference "Gravitational lensing: recent progress and future goals" (pp. 423-424). ArXiv Astrophysics e-prints. |
 | Dib, S., Surdej, J., & Claeskens, J.-F. (2001). Weighing nearby stars with GAIA ? In Conference proceedings of "European meeting, Census of the Galaxy: Challenges for photometry and spectrometry with GAIA. |
Poels, J., Moreau, O., Manfroid, J., Surdej, J., Borra, E., Claeskens, J.-F., Jean, C., Montfort, F., Swings, J.-P., Vangeyte, B., van Dessel, E., & Nakos, T. (2001). Surveys with the 4-m International Liquid Mirror Telescope. In Mining the Sky (pp. 598). doi:10.1007/10849171_79 |
 | Surdej, J., & Claeskens, J.-F. (2001). Gravitational lensing. In J. A. Bleeker, J. Geiss, ... M. Huber (Eds.), The Century of Space Science, Volume I (pp. 441-469). Dordrecht, Netherlands: Kluwer Academic Publisher. |
 | Poels, J., Borra, E., Claeskens, J.-F., Jean, C., Manfroid, J., Montfort, F., Moreau, O., Nakos, T., Surdej, J., Swings, J.-P., van Dessel, E., & Vangeyte, B. (2001). The 4-m International Liquid Mirror Telescope Project (ILMT) (poster). In F. R. Harnden, F. A. Primini, ... H. E. Payne (Eds.), Astronomical Data Analysis Software & Systems X Conference (pp. 97-100). |
 | Claeskens, J.-F., Khmil, S. V., Lee, D. W., Sluse, D., & Surdej, J. (2001). HST and ground-based observations of the gravitational lens system Q1009-0252 A & B. Astronomy and Astrophysics, 367, 748-758. doi:10.1051/0004-6361:20000491 Peer Reviewed verified by ORBi |
 | Claeskens, J.-F., Jean, C., & Surdej, J. (2001). Microlensing observations with the 4-m International Liquid Mirror Telescope. In J. W. Menzies & P. D. Sackett, The proceedings of the Conference “Microlensing 2000: A New Era of Microlensing Astrophysics” (pp. 373-377). |
 | Poels, J., Moreau, O., Manfroid, J., Surdej, J., Borra, H., Claeskens, J.-F., Jean, C., Monfort, F., Swings, J.-P., Vangeyte, B., van Dessel, E., & Nakos, T. (2001). Surveys with the 4-m International Liquid Mirror Telescope Project (ILMT) (poster). In A. J. Banday, S. Zaroubi, ... M. Bartelmann (Eds.), Astronomical Data Analysis Software and Systems X (pp. 598-600). |
 | Dib, S., Claeskens, J.-F., & Surdej, J. (2001). Determination of the mass of nearby stars from astrometric microlensing observations. In J. Surdej, J.-P. Swings, D. Caro, ... A. Detal (Eds.), Proceedings of the LIAC “From optical to millimetric interferometry, scientific and technological challenges” (pp. 151-155). |
 | Claeskens, J.-F., Royer, P., & Surdej, J. (2001). QSO colors in the proposed GAIA photometric systems. In Proceedings of the GAIA Workshop (pp. 1-13). |
 | Surdej, J., Claeskens, J.-F., Jean, C., Lee, D. W., Pospieszalska-Surdej, A., Remy, M., Sluse, D., Smette, A., & Swings, J.-P. (2001). The relevance of HST observations for studies of quasars, gravitational lenses and intervening gas clouds ". In Space Sciences, Vol. II, Part 1: Space Scientific Research in Belgium (pp. 95-104). Belgium: Federal Office for Scientific, Technical and Cultural Affairs. |
 | Claeskens, J.-F., Lee, D.-W., Remy, M., Sluse, D., & Surdej, J. (2000). QSO mass constraints from gravitational lensing studies of quasar pairs. The cases of Q1548+114 A & B and Q1148+0055 A & B. Astronomy and Astrophysics, 356, 840-848. Peer Reviewed verified by ORBi |
 | Le Brun, V., Smette, A., Surdej, J., & Claeskens, J.-F. (2000). Lensing properties of 7 damped Lyalpha absorbing galaxy-QSO pairs. Astronomy and Astrophysics, 363, 837-842. Peer Reviewed verified by ORBi |
 | Jean, C., Claeskens, J.-F., & Surdej, J. (01 October 1999). Gravitational lensing studies with the 4-m International Liquid Mirror Telescope (ILMT) [Poster presentation]. "Gravitational Lensing: Recent Progress and Future Goals", Boston, United States. |
 | Jean, C., Claeskens, J.-F., & Surdej, J. (1999). Surveys with a 4 m Liquid Mirror Telescope. In F. Morgant & W. J. Couch (Eds.), Looking Deep in the Southern Sky (pp. 89-90). Berlin, Germany: Springer-Verlag. |
 | Smette, A., Claeskens, J.-F., & Surdej, J. (1999). Gravitational Lensing by Damped LY alpha Absorbers. In C. L. Carilli, S. J. E. Radford, K. M. Menten, ... G. I. Langston, Highly Redshifted Radio Lines, ASP Conf. Series Vol. 156 (pp. 147-151). |
 | Claeskens, J.-F., & Surdej, J. (1998). Close projected QSO-Galaxy associations: are they real? Astronomy and Astrophysics, 335, 69-84. Peer Reviewed verified by ORBi |
Remy, M., Claeskens, J.-F., Surdej, J., Hjorth, J., Refsdal, S., Wucknitz, O., Sorensen, A. N., & Grundahl, F. (1998). Detection of the lensing galaxy for the double QSO HE 1104-1805. New Astronomy, 3, 379-390. doi:10.1016/S1384-1076(98)00005-0 Peer Reviewed verified by ORBi |
 | Surdej, J., & Claeskens, J.-F. (1998). Gravitational lens studies with a LMT. In M. Ferrari (Ed.), Proceedings of the International workshop “Science with Liquid Mirror Telescopes” (pp. 1-8). |
 | Surdej, J., Claeskens, J.-F., Remy, M., Refsdal, S., Pirenne, B., Prieto, A., & Vanderriest, C. (November 1997). HST confirmation of the lensed quasar J03.13. Astronomy and Astrophysics, 327, 1-L4. Peer Reviewed verified by ORBi |
 | Smette, A., Claeskens, J.-F., & Surdej, J. (1997). Damped LYalpha Absorbers and Gravitational Lensing. In Structure and Evolution of the Intergalactic Medium from QSO Absorption Line System, Proceedings of the 13th IAP Astrophysics Colloquium (pp. 313-316). Paris, France: Editions Frontieres. |
 | Remy, M., Claeskens, J.-F., & Surdej, J. (1997). HST observations of the gravitational lens systems HE 1104-1805 and J03.13. In S. Casertano (Ed.), The 1997 HST Calibration Workshop with a New Generation of Instruments (pp. 368-373). |
Smette, A., Claeskens, J.-F., & Surdej, J. (1997). Gravitational lensing by damped Ly-alpha absorbers. New Astronomy, 2, 53-76. doi:10.1016/S1384-1076(96)00023-1 Peer Reviewed verified by ORBi |
 | Rauw, G., Gosset, E., Manfroid, J., Vreux, J.-M., & Claeskens, J.-F. (01 February 1996). Existence of a short period (3.5-4 hours) in the photometric variability of WR 66. Astronomy and Astrophysics, 306, 783. Peer Reviewed verified by ORBi |
 | Claeskens, J.-F., Surdej, J., & Remy, M. (1996). J03.13 AB: A New Multiply Imaged QSO Candidate. In C. S. Kochanek & J. N. Hewitt (Eds.), Astrophysical applications of gravitational lensing: proceedings of the 173rd Symposium of the International Astronomical Union (pp. 337-338). Dordrecht, Germany: Kluwer Academic Publishers. |
 | Claeskens, J.-F., Surdej, J., & Remy, M. (January 1996). J03.13 A and B: a new multiply imaged QSO candidate [letter to the editor]. Astronomy and Astrophysics, 305, 9-L12. Peer Reviewed verified by ORBi |
 | Claeskens, J.-F., & Surdej, J. (1996). Determination of the Cosmological Density of Compact Objects using Gravitational Lensing and the HST. In P. Benvenuti, F. D. Macchetto, ... E. J. Schreier (Eds.), Science with the Hubble Space Telescope - II (pp. 96-100). Baltimore, MD, United States: Space Telescope Science Institute (STScI). |
 | Surdej, J., Jaunsen, A. O., Claeskens, J.-F., Gonzaga, S., Pospieszalska-Surdej, A., Pirenne, B., & Prieto, A. (1996). Ground-based and HST Direct Imaging of HLQs. In C. Kochanek & J. Hewitt (Eds.), Astrophysical Applications of Gravitational Lensing (pp. 387-392). Dordrecht, Germany: Kluwer Academic Publishers. |
 | Smette, A., Claeskens, J.-F., & Surdej, J. (1996). Gravitational Lenses and Damped Ly-alpha Systems. In C. S. Kochanek & J. N. Hewitt (Ed.), Astrophysical applications of gravitational lensing: proceedings of the 173rd Symposium of the International Astronomical Union (pp. 99-100). Dordrecht, Germany: Kluwer Academic Publishers. |
 | Claeskens, J.-F., Jaunsen, A. O., & Surdej, J. (1996). Gravitational Lenses Among Highly Luminous Quasars: Large Optical Surveys. In C. S. Kochanek & J. N. Hewitt (Eds.), Astrophysical applications of gravitational lensing: proceedings of the 173rd Symposium of the International Astronomical Union (pp. 13-20). Dordrecht, Germany: Kluwer Academic Publishers. Peer reviewed |
 | Courbin, F., Magain, P., Remy, M., Smette, A., Claeskens, J.-F., Hainaut, O., Hutsemekers, D., Meylan, G., & van Drom, E. (01 November 1995). Photometric monitoring (1987 to 1994) of the gravitational lens candidate UM 425. Astronomy and Astrophysics, 303, 1-7. Peer Reviewed verified by ORBi |
 | Surdej, J., Vanderriest, C., Angonin-Willaime, M.-C., Claeskens, J.-F., & Felenbok, P. (1995). Integral Field Spectroscopy of Selected Extragalactic Objects with FUEGOS. In J. Walsh & J. Danziger (Eds.), Science with the VLT (pp. 383-388). Berlin, Germany: Springer-Verlag. |
 | Surdej, J., Claeskens, J.-F., Crampton, D., Filippenko, A. V., Hutsemekers, D., Magain, P., Pirenne, B., Vanderriest, C., & Yee, H. K. C. (June 1993). Gravitational lensing statistics based on a large sample of highly luminous quasars. Astronomical Journal, 105, 2064-2078. doi:10.1086/116584 Peer Reviewed verified by ORBi |
 | Remy, M., Surdej, J., Smette, A., & Claeskens, J.-F. (1993). Optical imaging of gravitational lenses B1422+231. In J. Surdej, D. Fraipont-Caro, E. Gosset, S. Refsdal, ... M. Remy, Liege International Astrophysical Colloquia,Gravitational Lenses in the Universe (pp. 193). Liege, Belgium: ULg - Université de Liège. |
 | van Drom, E., Surdej, J., Magain, P., Hutsemekers, D., Gosset, E., Claeskens, J.-F., Shaver, P., & Melnick, J. (1993). Galaxies statistics around highly luminous quasars: the ESO Sample. In J. Surdej, D. Fraipont-Caro, E. Gosset, S. Refsdal, ... M. Remy (Eds.), The proceedings of the 31st Liège International Astrophysical Colloquium "Gravitational lenses in the Universe" (pp. 301-306). Liège, Belgium: ULg - Université de Liège. |
 | Moreau, O., Claeskens, J.-F., Gosset, E., Reboul, H., & Surdej, J. (1993). Systematic search for gravitational mirages among general quasar samples. In J. Surdej, D. Fraipont-Caro, E. Gosset, S. Refsdal, ... M. Remy (Eds.), The proceedings of the 31st Liège International Astrophysical Colloquium "Gravitational lenses in (pp. 189-192). Liège, Belgium: ULg - Université de Liège. |
 | Surdej, J., Remy, M., Smette, A., Claeskens, J.-F., Magain, P., Refsdal, S., Swings, J.-P., & Veron-Cetty, M. (1993). Two new very close pairs of quasars with discordant redshifts and a gravitational lens candidate. In J. Surdej, D. Fraipont-Caro, E. Gosset, S. Refsdal, ... M. Remy, Gravitational Lenses in the Universe (pp. 153-160). Liège, Belgium: ULg - Université de Liège. |
 | Claeskens, J.-F., Crampton, D., Filippenko, A. V., Hutsemekers, D., Magain, P., Pirenne, B., Surdej, J., Vanderriest, C., & Yee, H. K. C. (1993). Search for gravitational lenses in a large sample of highly luminous quasars and statistical determination of cosmological parameters. In J. Surdej, D. Fraipont-Caro, E. Gosset, S. Resdal, ... M. Remy (Eds.), The proceedings of the 31st Liège International Astrophysical Colloquium "Gravitational lenses in the Universe" (pp. 263-265). Liège, Belgium: ULg - Université de Liège. |
 | Remy, Surdej, J., Smette, A., & Claeskens, J.-F. (1993). Optical imaging of the gravitational lens system B 1422+231. Astronomy and Astrophysics, 278, 19-L22. Peer Reviewed verified by ORBi |
 | Surdej, J., Claeskens, J.-F., Hutsemekers, D., Magain, P., & Pirenne, B. (1992). Optical observations of gravitational lenses. In R. Kayser, T. Schramm, ... L. Nieser (Eds.), Proceedings of the Hamburg conference on ’Gravitational Lenses’, Lecture Notes in Physics 406 (pp. 27-43). Berlin Heidelberg, United States: Springer-Verlag. doi:10.1007/3-540-55797-0_77 |
 | Surdej, J., Claeskens, J.-F., Crampton, D., Filippenko, A. V., Hutsemekers, D., Magain, P., Pirenne, B., Vanderriest, C., & Yee, H. K. C. (1992). Gravitational lensing statistics based on a large sample of highly luminous quasars observed with ground-based telescopes and HST. In P. Benvenuti & E. J. Schreier (Eds.), Proceedings of a ST-ECF/STScI Workshop "Science with the Hubble Space Telescope" (pp. 111-118). Garching near Munich, Germany: European Southern Observatory. |