Léon Koopmans

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Phone+31 50 363 6519, +31 50 363 6100
EmailL.V.E.Koopmansrugnl

Landleven12, Gebouw 5419, ruimte 0160
9747 AD Groningen
Netherlands

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295 Article
38 Conference contribution
6 Other contribution
5 Review article
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Assessing the impact of two independent direction-dependent calibration algorithms on the LOFAR 21-cm signal power spectrum: And applications to an observation of a field flanking the North Celestial Pole
Gan, H., Mertens, F. G., Koopmans, L. V. E., Offringa, A. R., Mevius, M., Pandey, V. N., Brackenhoff, S. A., Ceccotti, E., Ciardi, B., Gehlot, B. K., Ghara, R., Giri, S. K., Iliev, I. T. & Munshi, S., Jan-2023, In: Astronomy & astrophysics. 669, 27 p., A20.
Research output: Contribution to journal › Article › Academic › peer-review

Open Access
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5 Downloads (Pure)
Sky-averaged 21-cm signal extraction using multiple antennas with an SVD framework: the REACH case
Saxena, A., Meerburg, P. D., Acedo, E. D. L., Handley, W. & Koopmans, L. V. E., 1-Jun-2023, In: Monthly Notices of the Royal Astronomical Society. 522, 1, p. 1022–1032 11 p.
Research output: Contribution to journal › Article › Academic › peer-review

Open Access
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10 Downloads (Pure)
A numerical study of 21-cm signal suppression and noise increase in direction-dependent calibration of LOFAR data
Mevius, M., Mertens, F., Koopmans, L. V. E., Offringa, A. R., Yatawatta, S., Brentjens, M. A., Chapman, E., Ciardi, B., Gan, H., Gehlot, B. K., Ghara, R., Ghosh, A., Giri, S. K., Iliev, I. T., Mellema, G., Pandey, V. N. & Zaroubi, S., 1-Jan-2022, In: Monthly Notices of the Royal Astronomical Society. 509, 3, p. 3693-3702 10 p.
Research output: Contribution to journal › Article › Academic › peer-review

Open Access
File

8 Citations (Scopus)

37 Downloads (Pure)
Cosmology intertwined: A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies
Abdalla, E., Abellán, G. F., Aboubrahim, A., Agnello, A., Akarsu, Ö., Akrami, Y., Alestas, G., Aloni, D., Amendola, L., Anchordoqui, L. A., Anderson, R. I., Arendse, N., Asgari, M., Ballardini, M., Barger, V., Basilakos, S., Batista, R. C., Battistelli, E. S., Battye, R., Benetti, M., & 183 othersBenisty, D., Berlin, A., de Bernardis, P., Berti, E., Bidenko, B., Birrer, S., Blakeslee, J. P., Boddy, K. K., Bom, C. R., Bonilla, A., Borghi, N., Bouchet, F. R., Braglia, M., Buchert, T., Buckley-Geer, E., Calabrese, E., Caldwell, R. R., Camarena, D., Capozziello, S., Casertano, S., Chen, G. C. F., Chluba, J., Chen, A., Chen, H. Y., Chudaykin, A., Cicoli, M., Copi, C. J., Courbin, F., Cyr-Racine, F. Y., Czerny, B., Dainotti, M., D'Amico, G., Davis, A. C., de Cruz Pérez, J., de Haro, J., Delabrouille, J., Denton, P. B., Dhawan, S., Dienes, K. R., Di Valentino, E., Du, P., Eckert, D., Escamilla-Rivera, C., Ferté, A., Finelli, F., Fosalba, P., Freedman, W. L., Frusciante, N., Gaztañaga, E., Giarè, W., Giusarma, E., Gómez-Valent, A., Handley, W., Harrison, I., Hart, L., Hazra, D. K., Heavens, A., Heinesen, A., Hildebrandt, H., Hill, J. C., Hogg, N. B., Holz, D. E., Hooper, D. C., Hosseininejad, N., Huterer, D., Ishak, M., Ivanov, M. M., Jaffe, A. H., Jang, I. S., Jedamzik, K., Jimenez, R., Joseph, M., Joudaki, S., Kamionkowski, M., Karwal, T., Kazantzidis, L., Keeley, R. E., Klasen, M., Komatsu, E., Koopmans, L. V. E., Kumar, S., Lamagna, L., Lazkoz, R., Lee, C. C., Lesgourgues, J., Levi Said, J., Lewis, T. R., L'Huillier, B., Lucca, M., Maartens, R., Macri, L. M., Marfatia, D., Marra, V., Martins, C. J. A. P., Masi, S., Matarrese, S., Mazumdar, A., Melchiorri, A., Mena, O., Mersini-Houghton, L., Mertens, J., Milaković, D., Minami, Y., Miranda, V., Moreno-Pulido, C., Moresco, M., Mota, D. F., Mottola, E., Mozzon, S., Muir, J., Mukherjee, A., Mukherjee, S., Naselsky, P., Nath, P., Nesseris, S., Niedermann, F., Notari, A., Nunes, R. C., Ó Colgáin, E., Owens, K. A., Özülker, E., Pace, F., Paliathanasis, A., Palmese, A., Pan, S., Paoletti, D., Perez Bergliaffa, S. E., Perivolaropoulos, L., Pesce, D. W., Pettorino, V., Philcox, O. H. E., Pogosian, L., Poulin, V., Poulot, G., Raveri, M., Reid, M. J., Renzi, F., Riess, A. G., Sabla, V. I., Salucci, P., Salzano, V., Saridakis, E. N., Sathyaprakash, B. S., Schmaltz, M., Schöneberg, N., Scolnic, D., Sen, A. A., Sehgal, N., Shafieloo, A., Sheikh-Jabbari, M. M., Silk, J., Silvestri, A., Skara, F., Sloth, M. S., Soares-Santos, M., Solà Peracaula, J., Songsheng, Y. Y., Soriano, J. F., Staicova, D., Starkman, G. D., Szapudi, I., Teixeira, E. M., Thomas, B., Treu, T., Trott, E., van de Bruck, C., Vazquez, J. A., Verde, L., Visinelli, L., Wang, D., Wang, J. M., Wang, S. J., Watkins, R., Watson, S., Webb, J. K., Weiner, N., Weltman, A., Witte, S. J., Wojtak, R., Yadav, A. K., Yang, W., Zhao, G. B. & Zumalacárregui, M., Jun-2022, In: Journal of High Energy Astrophysics. 34, p. 49-211 163 p.
Research output: Contribution to journal › Review article › peer-review

Open Access
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161 Citations (Scopus)

2 Downloads (Pure)
Degree-scale galactic radio emission at 122 MHz around the North Celestial Pole with LOFAR-AARTFAAC
Gehlot, B. K., Koopmans, L. V. E., Offringa, A. R., Gan, H., Ghara, R., Giri, S. K., Kuiack, M., Mertens, F. G., Mevius, M., Mondal, R., Pandey, V. N., Shulevski, A., Wijers, R. A. M. J. & Yatawatta, S., 1-Jun-2022, In: Astronomy and astrophysics. 662, 11 p., A97.
Research output: Contribution to journal › Article › Academic › peer-review

Open Access
File

9 Downloads (Pure)

KITP Conference: Applications of Gravitational Lensing: Unique Insights into Galaxy Formation and Evolution, Oct 5, 2006, Kavli Institute for Theoretical Physics, University of California, Santa Barbara
Luitje Koopmans (Speaker)
5-Oct-2006
Activity: Talk and presentation › Academic presentation › Academic
The New Cosmology Confronts Observation: The Cosmic Microwave Background, Dark Matter, Dark Energy, and Brane Worlds - KITP Program
Luitje Koopmans (Speaker)
3-Oct-2002
Activity: Talk and presentation › Academic presentation › Academic

MG B2016+112 radio images
Spingola, C. (Contributor), McKean, J. (Contributor), Massari, D. (Contributor) & Koopmans, L. (Contributor), University of Groningen, 30-Sept-2019
DOI: 10.26093/cds/vizier.36300108
Dataset
Sloan lens ACS survey. V.
Bolton, A. S. (Contributor), Burles, S. (Contributor), Koopmans, L. (Contributor), Treu, T. (Contributor), Gavazzi, R. (Contributor), Moustakas, L. A. (Contributor), Wayth, R. (Contributor) & Schlegel, D. J. (Contributor), University of Groningen, 20-Oct-2009
DOI: 10.26093/cds/vizier.16820964
Dataset
The Sloan Lens ACS (SLACS) Survey. IX.
Auger, M. W. (Contributor), Treu, T. (Contributor), Bolton, A. S. (Contributor), Gavazzi, R. (Contributor), Koopmans, L. (Contributor), Marshall, P. J. (Contributor), Bundy, K. (Contributor) & Moustakas, L. A. (Contributor), Strasbourg Astronomical Data Center, 2-Jan-2012
DOI: 10.26093/cds/vizier.17051099, https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/705/1099
Dataset
LOFAR-HBA 3C196 field RM cubes
Jelic, V. (Contributor), Bruyn ,de, A. (Contributor), Pandey, V. (Contributor), Mevius, M. (Contributor), Haverkorn, M. (Contributor), Brentjens, M. A. (Contributor), Koopmans, L. (Contributor), Zaroubi, S. (Contributor), Abdalla, F. B. (Contributor), Asad, M. (Contributor), Bus, S. (Contributor), Chapman, E. (Contributor), Ciardi, B. (Contributor), Fernandez, B. (Contributor), Ghosh, A. (Contributor), Harker, G. (Contributor), Iliev, I. T. (Contributor), Jensen, H. (Contributor), Kazemi, S. (Contributor), Mellema, G. (Contributor), Offringa, A. R. (Contributor), Patil, A. (Contributor), Vedantham, H. (Contributor) & Yatawatta, S. (Contributor), University of Groningen, 9-Nov-2015
DOI: 10.26093/cds/vizier.35830137
Dataset
LOFAR Long-Baseline Calibrator Survey. II.
Jackson, N. (Contributor), Badole, S. (Contributor), Morgan, J. (Contributor), Van Weeren, W. R. J. (Contributor), Sweijen, F. (Contributor), Norden, M. (Contributor), Nelles, A. (Contributor), Koopmans, L. (Contributor), Bonafede, A. (Contributor), Vocks, C. (Contributor), Iacobelli, M. (Contributor), Drabent, A. (Contributor), Avruch, I. M. (Contributor), Brouw, W. (Contributor), Pizzo, R. (Contributor), Schwarz, D. J. (Contributor), De Gasperin, G. F. (Contributor), Nikolajevs, A. (Contributor), Ciardi, B. (Contributor), Corstanje, A. (Contributor), Deller, A. (Contributor), Butcher, H. R. (Contributor), Prūsis, K. (Contributor), Duscha, S. (Contributor), Pandey, V. (Contributor), Van Dijk, D. P. (Contributor), Miley, G. K. (Contributor), Zensus, J. A. (Contributor), McKean, J. (Contributor), Ruiter, M. (Contributor), Gunst, A. W. (Contributor), Mooney, S. (Contributor), Moldon, J. (Contributor), Shulevski, A. (Contributor), Chhetri, R. (Contributor), Rothkaehl, H. (Contributor), Eislöffel, J. (Contributor), Rowlinson, A. (Contributor), Hoeft, M. (Contributor), Smirnov, O. (Contributor), Van Haarlem, H. M. P. (Contributor), Tagger, M. (Contributor), Jütte, E. (Contributor), Damstra, S. (Contributor), Heald, G. (Contributor), Brüggen, M. (Contributor), Morabito, L. (Contributor), Mann, G. (Contributor), Garrett, M. (Contributor), Coolen, A. (Contributor), Hardcastle, M. (Contributor), Orrù, E. (Contributor), Asgekar, A. (Contributor), Zarka, P. (Contributor), Zucca, P. (Contributor), Van Der Horst, D. H. A. J. (Contributor), Wijers, R. (Contributor), Blaauw, R. (Contributor), Wucknitz, O. (Contributor), Brentjens, M. (Contributor), Callingham, J. R. (Contributor), Krankowski, A. (Contributor), Pandey-Pommier, M. (Contributor), Griessmeier, J. (Contributor), Harwood, J. (Contributor), Falcke, H. (Contributor), Bentum, M. J. (Contributor), Maat, P. (Contributor), Reich, W. (Contributor), Paas, M. (Contributor) & Mulder, H. (Contributor), Strasbourg Astronomical Data Center, 25-Jan-2022
DOI: 10.26093/cds/vizier.36580002
Dataset

Léon Koopmans

Network

Dive into details

Assessing the impact of two independent direction-dependent calibration algorithms on the LOFAR 21-cm signal power spectrum: And applications to an observation of a field flanking the North Celestial Pole

Sky-averaged 21-cm signal extraction using multiple antennas with an SVD framework: the REACH case

A numerical study of 21-cm signal suppression and noise increase in direction-dependent calibration of LOFAR data

Cosmology intertwined: A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies

Degree-scale galactic radio emission at 122 MHz around the North Celestial Pole with LOFAR-AARTFAAC

KITP Conference: Applications of Gravitational Lensing: Unique Insights into Galaxy Formation and Evolution, Oct 5, 2006, Kavli Institute for Theoretical Physics, University of California, Santa Barbara

The New Cosmology Confronts Observation: The Cosmic Microwave Background, Dark Matter, Dark Energy, and Brane Worlds - KITP Program

MG B2016+112 radio images

Sloan lens ACS survey. V.

The Sloan Lens ACS (SLACS) Survey. IX.

LOFAR-HBA 3C196 field RM cubes

LOFAR Long-Baseline Calibrator Survey. II.

Léon Koopmans

Network

Research output

Activities

Datasets