Browsing Research publications by Author "Drabent, Alexander"

Now showing items 1-5 of 5

    • Faraday tomography of LoTSS-DR2 data : I. Faraday moments in the high-latitude outer Galaxy and revealing Loop III in polarisation 

      Erceg, Ana; Jelić, Vibor; Haverkorn, Marijke; Bracco, Andrea; Shimwell, Timothy W.; Tasse, Cyril; Dickey, John M.; Ceraj, Lana; Drabent, Alexander; Hardcastle, Martin J.; Turić, Luka (2022-07-01)
      Context. Observations of synchrotron emission at low radio frequencies reveal a labyrinth of polarised Galactic structures. However, the explanation for the wealth of structures remains uncertain due to the complex ...

    • Measuring the giant radio galaxy length distribution with the LoTSS 

      Oei, Martijn S. S. L.; Weeren, Reinout J. van; Gast, Aivin R. D. J. G. I. B.; Botteon, Andrea; Hardcastle, Martin J.; Dabhade, Pratik; Shimwell, Tim W.; Röttgering, Huub J. A.; Drabent, Alexander (2023-04-19)
      Context. Many massive galaxies launch jets from the accretion disk of their central black hole, but only ∼103 instances are known in which the associated outflows form giant radio galaxies (GRGs, or giants): luminous ...

    • On the encounter between the GASP galaxy JO36 and the radio plume of GIN 049 

      Ignesti, Alessandro; Brienza, Marisa; Vulcani, Benedetta; Poggianti, Bianca M.; Marasco, Antonino; Smith, Rory; Hardcastle, Martin; Botteon, Andrea; Roberts, Ian D.; Fritz, Jacopo; Paladino, Rosita; Gitti, Myriam; Wolter, Anna; Tomčić, Neven; McGee, Sean; Moretti, Alessia; Gullieuszik, Marco; Drabent, Alexander (2023-10-16)
      We report the serendipitous discovery of an unprecedented interaction between the radio lobe of a radio galaxy and a spiral galaxy. The discovery was made thanks to LOFAR observations at 144 MHz of the galaxy cluster A160 ...

    • Radio galaxy zoo EMU: towards a semantic radio galaxy morphology taxonomy 

      Bowles, Micah; Tang, Hongming; Vardoulaki, Eleni; Alexander, Emma L.; Luo, Yan; Rudnick, Lawrence; Walmsley, Mike; Porter, Fiona; Scaife, Anna M.~M.; Slijepcevic, Inigo Val; Adams, Elizabeth A.~K.; Drabent, Alexander; Dugdale, Thomas; Gürkan, Gülay; Hopkins, Andrew M.; Jimenez-Andrade, Eric F.; Leahy, Denis A.; Norris, Ray P.; Rahman, Syed Faisal ur; Ouyang, Xichang; Segal, Gary; Shabala, Stanislav S.; Wong, O. Ivy (2023-06-01)
      We present a novel natural language processing (NLP) approach to deriving plain English descriptors for science cases otherwise restricted by obfuscating technical terminology. We address the limitations of common radio ...

    • Sub-arcsecond imaging with the International LOFAR Telescope. II. Completion of the LOFAR Long-Baseline Calibrator Survey 

      Jackson, Neal; Badole, Shruti; Chhetri, Rajan; Prusis, Kaspars; Nikolajevs, Atvars; Morabito, Leah; Brentjens, Michiel; Sweijen, Frits; Iacobelli, Marco; Orrù, Emanuela; Sluman, J.; Blaauw, R.; Mulder, H.; Dijk, P. van; Mooney, Sean; Deller, Adam; Moldon, Javier; Callingham, J. R.; Harwood, Jeremy; Hardcastle, Martin; Heald, George; Drabent, Alexander; McKean, J. P.; Asgekar, A.; Avruch, I. M.; Bentum, M. J.; Bonafede, A.; Brouw, W. N.; Brüggen, M.; Butcher, H. R.; Ciardi, B.; Coolen, A.; Corstanje, A.; Damstra, S.; Duscha, S.; Eislöffel, J.; Falcke, H.; Garrett, M.; Gasperin, F. de; Griessmeier, J. -M.; Gunst, A. W.; Haarlem, M. P. van; Hoeft, M.; Horst, A. J. van der; Jütte, E.; Koopmans, L. V. E.; Krankowski, A.; Maat, P.; Mann, G.; Miley, G. K.; Nelles, A.; Norden, M.; Paas, M.; Pandey, V. N.; Pandey-Pommier, M.; Pizzo, R. F.; Reich, W.; Rothkaehl, H.; Rowlinson, A.; Ruiter, M.; Shulevski, A.; Schwarz, D. J.; Smirnov, O.; Tagger, M.; Vocks, C.; Weeren, R. J. van; Wijers, R.; Wucknitz, O.; Zarka, P.; Zensus, J. A.; Zucca, P. (2022-02-01)
      The Low-Frequency Array (LOFAR) Long-Baseline Calibrator Survey (LBCS) was conducted between 2014 and 2019 in order to obtain a set of suitable calibrators for the LOFAR array. In this paper, we present the complete survey, ...