Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Luitje Koopmans"'
Autor:
Michiel A. Brentjens, Sarod Yatawatta, Ralph A. M. J. Wijers, A. M. Sardarabadi, Maaijke Mevius, Saleem Zaroubi, Antonia Rowlinson, Luitje Koopmans, A. R. Offringa, Mark Kuiack, B. K. Gehlot, Vishambhar Pandey, Florent Mertens, Aleksandar Shulevski, Harish Vedantham
Publikováno v:
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2020, 499 (3), pp.4158-4173. ⟨10.1093/mnras/staa3093⟩
Monthly Notices of the Royal Astronomical Society, 499(3), 4158-4173. Oxford University Press
Mon.Not.Roy.Astron.Soc., 2020, 499 (3), pp.4158-4173. ⟨10.1093/mnras/staa3093⟩
Monthly Notices of the Royal Astronomical Society, 499(3), 4158-4173. Oxford University Press
The 21-cm absorption feature reported by the EDGES collaboration is several times stronger than that predicted by traditional astrophysical models. If genuine, a deeper absorption may lead to stronger fluctuations on the 21-cm signal on degree scales
Autor:
Raghunath Ghara, Luitje Koopmans, Anastasia Fialkov, Abhik Ghosh, Ilian T. Iliev, Garrelt Mellema, Saleem Zaroubi, Rajesh Mondal, Florent Mertens, Sambit K. Giri, B. K. Gehlot, B. Ciardi, Vishambhar Pandey, Rennan Barkana, A. R. Offringa, C. Fling
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 498(3), 4178-4191. Oxford University Press
The ARCADE2 and LWA1 experiments have claimed an excess over the Cosmic Microwave Background (CMB) at low radio frequencies. If the cosmological high-redshift contribution to this radio background is between 0.1% and 22% of the CMB at 1.42 GHz, it co
Autor:
G. K. Miley, Annalisa Bonafede, M. P. van Haarlem, Jochen Eislöffel, John McKean, P. C. G. van Dijk, M. A. Garrett, B. Ciardi, R. Blaauw, E. Jütte, Harvey Butcher, O. Wucknitz, Luitje Koopmans, Oleg Smirnov, M. Pandey-Pommier, Pietro Zucca, Joseph R. Callingham, S. Mooney, R. J. van Weeren, A. Nelles, Antonia Rowlinson, W. Reich, Heino Falcke, S. Duscha, Rajan Chhetri, Emanuela Orrú, G. Mann, Dominik J. Schwarz, Michiel A. Brentjens, P. Zarka, M. Ruiter, Hanna Rothkaehl, Kaspars Prūsis, Ralph A. M. J. Wijers, S. Badole, Jean-Mathias Griessmeier, P. Maat, Neal Jackson, Marco Iacobelli, Jeremy J. Harwood, Andrzej Krankowski, M. J. Norden, Vishambhar Pandey, A. J. van der Horst, John Morgan, F. Sweijen, Adam Deller, George Heald, S. Damstra, Martin J. Hardcastle, Mark J. Bentum, Ashish Asgekar, Leah K. Morabito, A. W. Gunst, M. Tagger, A. Shulevski, C. Vocks, A. Drabent, Javier Moldon, A. H. W. M. Coolen, M. Paas, Atvars Nikolajevs, W. N. Brouw, J. Sluman, Roberto Pizzo, Marcus Brüggen, Henk Mulder, Matthias Hoeft, F. de Gasperin, I. M. Avruch, J. A. Zensus, Arthur Corstanje
Publikováno v:
Astronomy & Astrophysics, 658, 1-13
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2022, 658, ⟨10.1051/0004-6361/202140756⟩
Astronomy and Astrophysics-A&A, EDP Sciences, In press
Digital.CSIC. Repositorio Institucional del CSIC
instname
Astronomy and Astrophysics, 658:A2. EDP Sciences
Astronomy & Astrophysics, 2022, Vol.658, pp.A2 [Peer Reviewed Journal]
Astronomy and astrophysics, 658:A2. EDP Sciences
Astronomy & Astrophysics, 658:A2
Astronomy & Astrophysics, 658, pp. 1-13
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2022, 658, ⟨10.1051/0004-6361/202140756⟩
Astronomy and Astrophysics-A&A, EDP Sciences, In press
Digital.CSIC. Repositorio Institucional del CSIC
instname
Astronomy and Astrophysics, 658:A2. EDP Sciences
Astronomy & Astrophysics, 2022, Vol.658, pp.A2 [Peer Reviewed Journal]
Astronomy and astrophysics, 658:A2. EDP Sciences
Astronomy & Astrophysics, 658:A2
Astronomy & Astrophysics, 658, pp. 1-13
Full list of authors: Jackson, N.; Badole, S.; Morgan, J.; Chhetri, R.; Prūsis, K.; Nikolajevs, A.; Morabito, L.; Brentjens, M.; Sweijen, F.; Iacobelli, M.; Orrù, E.; Sluman, J.; Blaauw, R.; Mulder, H.; van Dijk, P.; Mooney, S.; Deller, A.; Moldon,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c2913d7d2448e562ac3532a80fac7e5
http://hdl.handle.net/2066/247220
http://hdl.handle.net/2066/247220
The dichotomy of dark matter fraction and total mass density slope of galaxies over five dex in mass
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, 489 (4), pp.5483-5493. ⟨10.1093/mnras/stz2320⟩
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2019, 489 (4), pp.5483-5493. ⟨10.1093/mnras/stz2320⟩
Monthly Notices of the Royal Astronomical Society, 489(4), 5483-5493. Oxford University Press
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, 489 (4), pp.5483-5493. ⟨10.1093/mnras/stz2320⟩
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2019, 489 (4), pp.5483-5493. ⟨10.1093/mnras/stz2320⟩
Monthly Notices of the Royal Astronomical Society, 489(4), 5483-5493. Oxford University Press
We analyse the mass density distribution in the centres of galaxies across five orders of magnitude in mass range. Using high-quality spiral galaxy rotation curves and infrared photometry from SPARC, we conduct a systematic study of their central dar
Autor:
J. Sabater, H. J. A. Röttgering, M. Bondi, Martin J. Hardcastle, Rachel Cochrane, L. Wang, Wendy L. Williams, Timothy W. Shimwell, Philip Best, Matt J. Jarvis, C. Tasse, Joseph R. Callingham, Vibor Jelić, D. Nisbet, Isabella Prandoni, R. Kondapally, Daniel J. Smith, Dominik J. Schwarz, Luitje Koopmans, Shane O'Sullivan, B. Ciardi, S. Zaroubi, M. Bonato
Publikováno v:
Astronomy and Astrophysics, 648
Astron.Astrophys.
Astron.Astrophys., 2021, 648, pp.A2. ⟨10.1051/0004-6361/202038828⟩
Astronomy and astrophysics, 648:A2. EDP Sciences
Astron.Astrophys.
Astron.Astrophys., 2021, 648, pp.A2. ⟨10.1051/0004-6361/202038828⟩
Astronomy and astrophysics, 648:A2. EDP Sciences
International audience; The LOFAR Two-metre Sky Survey (LoTSS) will cover the full northern sky and, additionally, aims to observe the LoTSS deep fields to a noise level of ≲10 μJy beam−1 over several tens of square degrees in areas that have th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::534d1462c25ba3fa0f2b2067cfc1f88d
https://ui.adsabs.harvard.edu/abs/2021A&A...648A...2S
https://ui.adsabs.harvard.edu/abs/2021A&A...648A...2S
Autor:
Jonathan R. Pritchard, Vibor Jelić, Emma Chapman, Saleem Zaroubi, Abhik Ghosh, I. T. Iliev, Sambit K. Giri, B. Ciardi, Florent Mertens, Luitje Koopmans, Ian Hothi, Raghunath Ghara, B. K. Gehlot
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2020, 500 (2), pp.2264-2277. ⟨10.1093/mnras/staa3446⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 500 (2), pp.2264-2277. ⟨10.1093/mnras/staa3446⟩
Monthly Notices of the Royal Astronomical Society, 500, 2264-2277. Oxford University Press
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2020, 500 (2), pp.2264-2277. ⟨10.1093/mnras/staa3446⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 500 (2), pp.2264-2277. ⟨10.1093/mnras/staa3446⟩
Monthly Notices of the Royal Astronomical Society, 500, 2264-2277. Oxford University Press
We compare various foreground removal techniques that are being utilised to remove bright foregrounds in various experiments aiming to detect the redshifted 21cm signal of neutral hydrogen from the Epoch of Reionization. In this work, we test the per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a7e05b0100472bbc387479bd63a8691
http://arxiv.org/abs/2011.01284
http://arxiv.org/abs/2011.01284
Autor:
Frederic Courbin, Sherry H. Suyu, James H. H. Chan, Kenneth C. Wong, Matthew W. Auger, L. Van de Vyvere, E. Buckley-Geer, Sampath Mukherjee, Simon Birrer, A. Galan, Adriano Agnello, Christopher D. Fassnacht, Dominique Sluse, Anowar J. Shajib, Stefan Hilbert, Luitje Koopmans, Xuheng Ding, Geoff C. F. Chen, Chiara Spiniello, Tommaso Treu, Alessandro Sonnenfeld, Thomas E. Collett, M. Millon, Veronica Motta, Cristian Rusu
Publikováno v:
Astronomy & astrophysics, 639. EDP Sciences
Millon, M, Galan, A, Courbin, F, Treu, T, Suyu, S H, Ding, X, Birrer, S, Chen, G C-F, Shajib, A J, Sluse, D, Wong, K C, Agnello, A, Auger, M W, Buckley-Geer, E J, Chan, J H H, Collett, T, Fassnacht, C D, Hilbert, S, Koopmans, L V E, Motta, F, Mukherjee, S, Rusu, C E, Sonnenfeld, A, Spiniello, C & Van de Vyvere, L 2020, ' TDCOSMO : I. An exploration of systematic uncertainties in the inference of H-0 from time-delay cosmography ', Astronomy & Astrophysics, vol. 639, A101 . https://doi.org/10.1051/0004-6361/201937351
Millon, M, Galan, A, Courbin, F, Treu, T, Suyu, S H, Ding, X, Birrer, S, Chen, G C-F, Shajib, A J, Sluse, D, Wong, K C, Agnello, A, Auger, M W, Buckley-Geer, E J, Chan, J H H, Collett, T, Fassnacht, C D, Hilbert, S, Koopmans, L V E, Motta, V, Mukherjee, S, Rusu, C E, Sonnenfeld, A, Spiniello, C & Vyvere, L V D 2020, ' TDCOSMO. I. An exploration of systematic uncertainties in the inference of H 0 from time-delay cosmography ', Astronomy and Astrophysics, vol. 639, A101 . https://doi.org/10.1051/0004-6361/201937351
Astronomy & Astrophysics, 639, A101
Millon, M, Galan, A, Courbin, F, Treu, T, Suyu, S H, Ding, X, Birrer, S, Chen, G C-F, Shajib, A J, Sluse, D, Wong, K C, Agnello, A, Auger, M W, Buckley-Geer, E J, Chan, J H H, Collett, T, Fassnacht, C D, Hilbert, S, Koopmans, L V E, Motta, F, Mukherjee, S, Rusu, C E, Sonnenfeld, A, Spiniello, C & Van de Vyvere, L 2020, ' TDCOSMO : I. An exploration of systematic uncertainties in the inference of H-0 from time-delay cosmography ', Astronomy & Astrophysics, vol. 639, A101 . https://doi.org/10.1051/0004-6361/201937351
Millon, M, Galan, A, Courbin, F, Treu, T, Suyu, S H, Ding, X, Birrer, S, Chen, G C-F, Shajib, A J, Sluse, D, Wong, K C, Agnello, A, Auger, M W, Buckley-Geer, E J, Chan, J H H, Collett, T, Fassnacht, C D, Hilbert, S, Koopmans, L V E, Motta, V, Mukherjee, S, Rusu, C E, Sonnenfeld, A, Spiniello, C & Vyvere, L V D 2020, ' TDCOSMO. I. An exploration of systematic uncertainties in the inference of H 0 from time-delay cosmography ', Astronomy and Astrophysics, vol. 639, A101 . https://doi.org/10.1051/0004-6361/201937351
Astronomy & Astrophysics, 639, A101
Time-delay cosmography of lensed quasars has achieved 2.4% precision on the measurement of the Hubble constant, $H_0$. As part of an ongoing effort to uncover and control systematic uncertainties, we investigate three potential sources: 1- stellar ki
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b998939cf3d3177d0017b89a284892f
https://research.rug.nl/en/publications/7e050e4d-91d7-4589-a8c1-8fb8ef694cea
https://research.rug.nl/en/publications/7e050e4d-91d7-4589-a8c1-8fb8ef694cea
Autor:
Edo Ibar, Luitje Koopmans, A. D. Biggs, Isabella Prandoni, T. K. Garratt, M. K. Argo, Alasdair Thomson, Mark Sargent, Kristen Coppin, H. Chen, J. M. Simpson, Robert Beswick, A. M. Swinbank, P. N. Best, I. M. McHardy, M. Bondi, David Bacon, Ian Smail, A. Njeri, Eskil Varenius, Jean-Paul Kneib, J. F. Radcliffe, Rob Ivison, Tiziana Venturi, Scott Chapman, Matt J. Jarvis, Kirsten Kraiberg Knudsen, Chris Pearson, A. M. S. Richards, Miguel A. Pérez-Torres, Simon Garrington, D. Guidetti, Charles E. Simpson, N. Wrigley, H. J. A. Röttgering, T. W. B. Muxlow, M. A. Garrett, Leah K. Morabito, Eric J. Murphy, Stephen Serjeant
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2020, 495, pp.1188-1208. ⟨10.1093/mnras/staa1279⟩
Digital.CSIC. Repositorio Institucional del CSIC
instname
Monthly Notices of the Royal Astronomical Society, 495(1), 1188-1208
Monthly Notices of the Royal Astronomical Society, 495(1), 1188-1208. Oxford University Press
Monthly Notices of the Royal Astronomical Society, 2020, 495, pp.1188-1208. ⟨10.1093/mnras/staa1279⟩
Digital.CSIC. Repositorio Institucional del CSIC
instname
Monthly Notices of the Royal Astronomical Society, 495(1), 1188-1208
Monthly Notices of the Royal Astronomical Society, 495(1), 1188-1208. Oxford University Press
Full list of authors: Muxlow, T. W. B.; Thomson, A. P.; Radcliffe, J. F.; Wrigley, N. H.; Beswick, R. J.; Smail, Ian; McHardy, I. M.; Garrington, S. T.; Ivison, R. J.; Jarvis, M. J.; Prandoni, I.; Bondi, M.; Guidetti, D.; Argo, M. K.; Bacon, David; B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f048d8928125b29fd59baa54119557a
https://doi.org/10.1093/mnras/staa1279
https://doi.org/10.1093/mnras/staa1279
Autor:
K. M. B. Asad, Florent Mertens, A. R. Offringa, B. K. Gehlot, Luitje Koopmans, I. T. Iliev, Maaijke Mevius, Sambit K. Giri, Sarod Yatawatta, B. Ciardi, Abhik Ghosh, Rajesh Mondal, Vishambhar Pandey, Michiel A. Brentjens, A. M. Sardarabadi, H. Gan, Raghunath Ghara, R. Kooistra, Simon Gazagnes, Joop Schaye, Vibor Jelić, Harish Vedantham, Garrelt Mellema, Saleem Zaroubi, M. B. Silva, Emma Chapman
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 493(2), 1662-1685
Monthly Notices of the Royal Astronomical Society, 493(2), 1662-1685
A new upper limit on the 21 cm signal power spectrum at a redshift of z ≈ 9.1 is presented, based on 141 h of data obtained with the Low-Frequency Array (LOFAR). The analysis includes significant improvements in spectrally smooth gain-calibration,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac4e4eb4cafd3c7d4919e8c1933d868d
http://fulir.irb.hr/5324/1/staa327.pdf
http://fulir.irb.hr/5324/1/staa327.pdf
Autor:
Oleg Smirnov, Martin J. Hardcastle, P. Zarka, Adam Stewart, H. Paas, D. Carbone, P. Maat, Dominik J. Schwarz, M. C. Toribio, David A. Nichols, G. Mann, Rudy Wijnands, A. J. van der Horst, Evan Keane, H. J. A. Röttgering, Olaf Wucknitz, C. Tasse, T. Muñoz-Darias, Henk Mulder, M. H. D. van der Wiel, Kenta Hotokezaka, M. P. van Haarlem, Stephane Corbel, J. B. R. Oonk, S. ter Veen, A. W. Gunst, W. N. Brouw, Casey J. Law, M. Iacobelli, K. Gourdji, Samaya Nissanke, J. W. Broderick, Timothy W. Shimwell, R. Pekal, Rob Fender, W. Reich, James M. Anderson, Matthias Hoeft, Anna Nelles, R. Blaauw, Luitje Koopmans, J. van Leeuwen, Aleksandar Shulevski, R. J. van Weeren, Pietro Zucca, Marian Soida, Martin Bell, Ralph A. M. J. Wijers, Vanessa A. Moss, M. Pandey-Pommier, Thomas M. O. Franzen, Antonia Rowlinson, Anjali A. A. Piette, S. Duscha, Richard Fallows, M. A. Garrett, Peter G. Jonker, Mark J. Bentum, J.-M. Grießmeier, M. de Vos, B. Ciardi, Jörg R. Hörandel, E. Jütte, C. Vocks, M. Serylak, Andrzej Krankowski, Marcus Brüggen, Jochen Eislöffel, M. Pietka
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2020, 494 (4), pp.5110-5117. ⟨10.1093/mnras/staa950⟩
Monthly Notices of the Royal Astronomical Society, 494(4), 5110-5117. Oxford University Press
Monthly notices of the Royal Astronomical Society 494(4), 5110-5117 (2020). doi:10.1093/mnras/staa950
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 494 (4), pp.5110-5117. ⟨10.1093/mnras/staa950⟩
Monthly Notices of the Royal Astronomical Society, 494, 4, pp. 5110-5117
Monthly Notices of the Royal Astronomical Society, 494(4), 5110-5117
Monthly Notices of the Royal Astronomical Society, 494, 5110-5117
Monthly Notices of the Royal Astronomical Society, 2020, 494 (4), pp.5110-5117. ⟨10.1093/mnras/staa950⟩
Monthly Notices of the Royal Astronomical Society, 494(4), 5110-5117. Oxford University Press
Monthly notices of the Royal Astronomical Society 494(4), 5110-5117 (2020). doi:10.1093/mnras/staa950
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 494 (4), pp.5110-5117. ⟨10.1093/mnras/staa950⟩
Monthly Notices of the Royal Astronomical Society, 494, 4, pp. 5110-5117
Monthly Notices of the Royal Astronomical Society, 494(4), 5110-5117
Monthly Notices of the Royal Astronomical Society, 494, 5110-5117
We present low-radio-frequency follow-up observations of AT 2017gfo, the electromagnetic counterpart of GW170817, which was the first binary neutron star merger to be detected by Advanced LIGO-Virgo. These data, with a central frequency of 144 MHz, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5a4e815449f3bd208d8075939aa4078
https://hal.science/hal-02557824/document
https://hal.science/hal-02557824/document