| Upper limits on the 21 cm epoch of reionization power spectrum from one night with LOFAR AH Patil, S Yatawatta, LVE Koopmans, AG De Bruyn, MA Brentjens, ... The Astrophysical Journal 838 (1), 65, 2017 | 323 | 2017 |
| Improved upper limits on the 21 cm signal power spectrum of neutral hydrogen at z ≈ 9.1 from LOFAR FG Mertens, M Mevius, LVE Koopmans, AR Offringa, G Mellema, ... Monthly Notices of the Royal Astronomical Society 493 (2), 1662-1685, 2020 | 281 | 2020 |
| The first power spectrum limit on the 21-cm signal of neutral hydrogen during the Cosmic Dawn at z = 20–25 from LOFAR BK Gehlot, FG Mertens, LVE Koopmans, MA Brentjens, S Zaroubi, ... Monthly Notices of the Royal Astronomical Society 488 (3), 4271-4287, 2019 | 108 | 2019 |
| Systematic biases in low-frequency radio interferometric data due to calibration: the LOFAR-EoR case AH Patil, S Yatawatta, S Zaroubi, LVE Koopmans, AG de Bruyn, V Jelić, ... Monthly Notices of the Royal Astronomical Society 463 (4), 4317-4330, 2016 | 100 | 2016 |
| Constraining the intergalactic medium at z ≈ 9.1 using LOFAR Epoch of Reionization observations R Ghara, SK Giri, G Mellema, B Ciardi, S Zaroubi, IT Iliev, LVE Koopmans, ... Monthly Notices of the Royal Astronomical Society 493 (4), 4728-4747, 2020 | 97 | 2020 |
| Tight constraints on the excess radio background at z = 9.1 from LOFAR R Mondal, A Fialkov, C Fling, IT Iliev, R Barkana, B Ciardi, G Mellema, ... Monthly Notices of the Royal Astronomical Society 498 (3), 4178-4191, 2020 | 84 | 2020 |
| Comparing foreground removal techniques for recovery of the LOFAR-EoR 21 cm power spectrum I Hothi, E Chapman, JR Pritchard, FG Mertens, LVE Koopmans, B Ciardi, ... Monthly Notices of the Royal Astronomical Society 500 (2), 2264-2277, 2021 | 47 | 2021 |
| Polarization leakage in epoch of reionization windows–II. Primary beam model and direction-dependent calibration KMB Asad, LVE Koopmans, V Jelić, A Ghosh, FB Abdalla, MA Brentjens, ... Monthly Notices of the Royal Astronomical Society 462 (4), 4482-4494, 2016 | 43 | 2016 |
| Wide-field LOFAR-LBA power-spectra analyses: impact of calibration, polarization leakage, and ionosphere BK Gehlot, LVE Koopmans, AG de Bruyn, S Zaroubi, MA Brentjens, ... Monthly Notices of the Royal Astronomical Society 478 (2), 1484-1501, 2018 | 41 | 2018 |
| Peering into the dark (ages) with low-frequency space interferometers LVE Koopmans, R Barkana, M Bentum, G Bernardi, AJ Boonstra, ... Experimental astronomy, 1-36, 2021 | 37 | 2021 |
| The AARTFAAC Cosmic Explorer: observations of the 21-cm power spectrum in the EDGES absorption trough BK Gehlot, FG Mertens, LVE Koopmans, AR Offringa, A Shulevski, ... Monthly Notices of the Royal Astronomical Society 499 (3), 4158-4173, 2020 | 36 | 2020 |
| Polarization leakage in epoch of reionization windows–III. Wide-field effects of narrow-field arrays KMB Asad, LVE Koopmans, V Jelić, AG de Bruyn, VN Pandey, BK Gehlot Monthly Notices of the Royal Astronomical Society 476 (3), 3051-3062, 2018 | 36 | 2018 |
| Precision requirements for interferometric gridding in the analysis of a 21 cm power spectrum AR Offringa, F Mertens, S Van der Tol, B Veenboer, BK Gehlot, ... Astronomy & Astrophysics 631, A12, 2019 | 28 | 2019 |
| A numerical study of 21-cm signal suppression and noise increase in direction-dependent calibration of LOFAR data M Mevius, F Mertens, LVE Koopmans, AR Offringa, S Yatawatta, ... Monthly Notices of the Royal Astronomical Society 509 (3), 3693-3702, 2022 | 26 | 2022 |
| Foreground modelling via Gaussian process regression: an application to HERA data A Ghosh, F Mertens, G Bernardi, MG Santos, NS Kern, CL Carilli, ... Monthly Notices of the Royal Astronomical Society 495 (3), 2813-2826, 2020 | 25 | 2020 |
| First upper limits on the 21 cm signal power spectrum from cosmic dawn from one night of observations with NenuFAR S Munshi, FG Mertens, LVE Koopmans, AR Offringa, B Semelin, D Aubert, ... Astronomy & Astrophysics 681, A62, 2024 | 11 | 2024 |
| 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 … H Gan, FG Mertens, LVE Koopmans, AR Offringa, M Mevius, VN Pandey, ... Astronomy & Astrophysics 669, A20, 2023 | 10 | 2023 |
| Statistical analysis of the causes of excess variance in the 21 cm signal power spectra obtained with the Low-Frequency Array H Gan, LVE Koopmans, FG Mertens, M Mevius, AR Offringa, B Ciardi, ... Astronomy & Astrophysics 663, A9, 2022 | 8 | 2022 |
| A Roadmap for Astrophysics and Cosmology with High-Redshift 21 cm Intensity Mapping A Parsons, JE Aguirre, AP Beardsley, G Bernardi, JD Bowman, P Bull, ... Bulletin of the American Astronomical Society 51 (7), 241, 2019 | 8 | 2019 |
| Diffuse sources, clustering, and the excess anisotropy of the radio synchrotron background FJ Cowie, AR Offringa, BK Gehlot, J Singal, S Heston, S Horiuchi, ... Monthly Notices of the Royal Astronomical Society 523 (4), 5034-5046, 2023 | 6 | 2023 |
Leon KoopmansKapteyn Astronomical Institute, University of Groningen在 rug.nl 的电子邮件经过验证
