Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Boonstra, Albert Jan"'
Radio frequency interference (RFI) is a persistent contaminant in terrestrial radio astronomy. While new radio interferometers are becoming operational, novel sources of RFI are also emerging. In order to strengthen the mitigation of RFI in modern ra
Externí odkaz:
http://arxiv.org/abs/2412.14775
Autor:
Mesarcik, Michael, Boonstra, Albert-Jan, Iacobelli, Marco, Ranguelova, Elena, de Laat, Cees, van Nieuwpoort, Rob
Publikováno v:
A&A 680, A74 (2023)
As radio telescopes increase in sensitivity and flexibility, so do their complexity and data-rates. For this reason automated system health management approaches are becoming increasingly critical to ensure nominal telescope operations. We propose a
Externí odkaz:
http://arxiv.org/abs/2307.01054
Radio Frequency Interference (RFI) corrupts astronomical measurements, thus affecting the performance of radio telescopes. To address this problem, supervised segmentation models have been proposed as candidate solutions to RFI detection. However, th
Externí odkaz:
http://arxiv.org/abs/2207.00351
We show that using nearest neighbours in the latent space of autoencoders (AE) significantly improves performance of semi-supervised novelty detection in both single and multi-class contexts. Autoencoding methods detect novelty by learning to differe
Externí odkaz:
http://arxiv.org/abs/2111.06150
Autor:
Mesarcik, Michael, Boonstra, Albert-Jan, Meijer, Christiaan, Jansen, Walter, Ranguelova, Elena, van Nieuwpoort, Rob V.
Modern radio telescopes combine thousands of receivers, long-distance networks, large-scale compute hardware, and intricate software. Due to this complexity, failures occur relatively frequently. In this work we propose novel use of unsupervised deep
Externí odkaz:
http://arxiv.org/abs/2005.13373
Autor:
Koopmans, Leon, Barkana, Rennan, Bentum, Mark, Bernardi, Gianni, Boonstra, Albert-Jan, Bowman, Judd, Burns, Jack, Chen, Xuelei, Datta, Abhirup, Falcke, Heino, Fialkov, Anastasia, Gehlot, Bharat, Gurvits, Leonid, Jelić, Vibor, Klein-Wolt, Marc, Koopmans, Léon, Lazio, Joseph, Meerburg, Daan, Mellema, Garrelt, Mertens, Florent, Mesinger, Andrei, Offringa, André, Pritchard, Jonathan, Semelin, Benoit, Subrahmanyan, Ravi, Silk, Joseph, Trott, Cathryn, Vedantham, Harish, Verde, Licia, Zaroubi, Saleem, Zarka, Philippe
Neutral hydrogen pervades the infant Universe, and its redshifted 21-cm signal allows one to chart the Universe. This signal allows one to probe astrophysical processes such as the formation of the first stars, galaxies, (super)massive black holes an
Externí odkaz:
http://arxiv.org/abs/1908.04296
Autor:
Singh, Gagandeep, Chelini, Lorenzo, Corda, Stefano, Awan, Ahsan Javed, Stuijk, Sander, Jordans, Roel, Corporaal, Henk, Boonstra, Albert-Jan
The conventional approach of moving data to the CPU for computation has become a significant performance bottleneck for emerging scale-out data-intensive applications due to their limited data reuse. At the same time, the advancement in 3D integratio
Externí odkaz:
http://arxiv.org/abs/1908.02640
Autor:
Chen, Xuelei, Burns, Jack, Koopmans, Leon, Rothkaehi, Hanna, Silk, Joseph, Wu, Ji, Boonstra, Albert-Jan, Cecconi, Baptiste, Chiang, Cynthia H., Chen, Linjie, Deng, Li, Falanga, Maurizio, Falcke, Heino, Fan, Quanlin, Fang, Guangyou, Fialkov, Anastasia, Gurvits, Leonid, Ji, Yicai, Kasper, Justin C., Li, Kejia, Mao, Yi, Mckinley, Benjamin, Monsalve, Raul, Peterson, Jeffery B., Ping, Jinsong, Subrahmanyan, Ravi, Vedantham, Harish, Wolt, Marc Klein, Wu, Fengquan, Xu, Yidong, Yan, Jingye, Yue, Bin
Due to ionosphere absorption and the interference by natural and artificial radio emissions, ground observation of the sky at the decameter or longer is very difficult. This unexplored part of electromagnetic spectrum has the potential of great disco
Externí odkaz:
http://arxiv.org/abs/1907.10853
Publikováno v:
In Array July 2022 14
Autor:
Cecconi, Baptiste, Dekkali, Moustapha, Briand, Carine, Segret, Boris, Girard, Julien N, Laurens, André, Lamy, Alain, Valat, David, Delpech, Michel, Bruno, Mickael, Gélard, Patrick, Bucher, Martin, Nenon, Quentin, Grießmeier, Jean-Mathias, Boonstra, Albert-Jan, Bentum, Mark
Ground based low frequency radio interferometers have been developed in the last decade and are providing the scientific community with high quality observations. Conversely, current radioastronomy instruments in space have a poor angular resolution
Externí odkaz:
http://arxiv.org/abs/1710.10245