Zobrazeno 1 - 10
of 1 950
pro vyhledávání: '"Schulz, R. P."'
Autor:
Adams, Elizabeth A. K., Adebahr, B., de Blok, W. J. G., Denes, H., Hess, K. M., van der Hulst, J. M., Kutkin, A., Lucero, D. M., Morganti, R., Moss, V. A., Oosterloo, T. A., Orru, E., Schulz, R., van Amesfoort, A. S., Berger, A., Boersma, O. M., Bouwhuis, M., Brink, R. van den, van Cappellen, W. A., Connor, L., Coolen, A. H. W. M., Damstra, S., van Diepen, G. N. J., Dijkema, T. J., Ebbendorf, N., Grange, Y. G., de Goei, R., Gunst, A. W., Holties, H. A., Hut, B., Ivashina, M. V., Jozsa, G. I. G., Loose, G. M., van Leeuwen, J., Maan, Y., Mancini, M., Mika, A., Mulder, H., Norden, M. J., Offringa, A. R., Oostrum, L. C., Pastor-Marazuela, I., Pisano, D. J., Ponomareva, A. A., Romein, J. W., Ruiter, M, Schoenmakers, A. P., van der Schuur, D., Sluman, J. J., Smits, R., Stuurwold, K. J. C, Verstappen, J., Vilchez, N. P. E, Vohl, D., Wierenga, K. J., Wijnholds, S. J., Woestenburg, E. E. M., Zanting, A. W., Ziemke, J.
Publikováno v:
A&A 667, A38 (2022)
(Abridged) Apertif is a phased-array feed system for WSRT, providing forty instantaneous beams over 300 MHz of bandwidth. A dedicated survey program started on 1 July 2019, with the last observations taken on 28 February 2022. We describe the release
Externí odkaz:
http://arxiv.org/abs/2208.05348
Autor:
Adebahr, B., Berger, A., Adams, E. A. K., Hess, K. M., de Blok, W. J. G., Dénes, H., Moss, V. A., Schulz, R., van der Hulst, J. M., Connor, L., Damstra, S., Hut, B., Ivashina, M. V., Loose, G. M., Maan, Y., Mika, A., Mulder, H., Norden, M. J., Oostrum, L. C., Orrú, E., Ruiter, M., Smits, R., van Cappellen, W. A., van Leeuwen, J., Vermaas, N. J., Vohl, D., Ziemke, J.
Publikováno v:
A&A 663, A103 (2022)
We analyse five early science datasets from the APERture Tile in Focus (Apertif) phased array feed system to verify the polarisation capabilities of Apertif in view of future larger data releases. We aim to characterise the source population of the p
Externí odkaz:
http://arxiv.org/abs/2203.16925
Autor:
Adebahr, B., Schulz, R., Dijkema, T. J., Moss, V. A., Offringa, A. R., Kutkin, A., van der Hulst, J. M., Frank, B. S., Vilchez, N. P. E., Verstappen, J., Adams, E. K., de Blok, W. J. G., Denes, H., Hess, K. M., Lucero, D., Morganti, R., Oosterloo, T., Pisano, D. -J., Ivashina, M. V., van Cappellen, W. A., Connor, L. D., Coolen, A. H. W. M., Damstra, S., Loose, G. M., Maan, Y., Maccagni, F. M., Mika, A., Mulder, H., Oostrum, L. C., Orru, E., Smits, R., van der Schuur, D., van Leeuwen, J., Vohl, D., Wijnholds, S. J., Ziemke, J.
Publikováno v:
Astronomy and Computing 38 (2022) 100514
Apertif (APERture Tile In Focus) is one of the Square Kilometre Array (SKA) pathfinder facilities. The Apertif project is an upgrade to the 50-year-old Westerbork Synthesis Radio Telescope (WSRT) using phased-array feed technology. The new receivers
Externí odkaz:
http://arxiv.org/abs/2112.03722
Autor:
van Cappellen, W. A., Oosterloo, T. A., Verheijen, M. A. W., Adams, E. A. K., Adebahr, B., Braun, R., Hess, K. M., Holties, H., van der Hulst, J. M., Hut, B., Kooistra, E., van Leeuwen, J., Loose, G. M., Morganti, R., Moss, V. A., Orrú, E., Ruiter, M., Schoenmakers, A. P., Vermaas, N. J., Wijnholds, S. J., van Amesfoort, A. S., Arts, M. J., Attema, J. J., Bakker, L., Bassa, C. G., Bast, J. E., Benthem, P., Beukema, R., Blaauw, R., de Blok, W. J. G., Bouwhuis, M., Brink, R. H. van den, Connor, L., Coolen, A. H. W. M., Damstra, S., van Diepen, G. N. J., de Goei, R., Dénes, H., Drost, M., Ebbendorf, N., Frank, B. S., Gardenier, D. W., Gerbers, M., Grange, Y. G., Grit, T., Gunst, A. W., Gupta, N., Ivashina, M. V., Józsa, G. I. G., Janssen, G. H., Koster, A., Kruithof, G. H., Kuindersma, S. J., Kutkin, A., Lucero, D. M., Maan, Y., Maccagni, F. M., van der Marel, J., Mika, A., Morawietz, J., Mulder, H., Mulder, E., Norden, M. J., Offringa, A. R., Oostrum, L. C., Overeem, R. E., Paragi, Z., Pepping, H. J., Petroff, E., Pisano, D. J., Polatidis, A. G., Prasad, P., de Reijer, J. P. R., Romein, J. W., Schaap, J., Schoonderbeek, G. W., Schulz, R., van der Schuur, D., Sclocco, A., Sluman, J. J., Smits, R., Stappers, B. W., Straal, S. M., Stuurwold, K. J. C., Verstappen, J., Vohl, D., Wierenga, K. J., Woestenburg, E. E. M., Zanting, A. W., Ziemke, J.
Publikováno v:
A&A 658, A146 (2022)
We describe the APERture Tile In Focus (Apertif) system, a phased array feed (PAF) upgrade of the Westerbork Synthesis Radio Telescope which has transformed this telescope into a high-sensitivity, wide field-of-view L-band imaging and transient surve
Externí odkaz:
http://arxiv.org/abs/2109.14234
Autor:
Hess, Kelley M., Roberts, H., Dénes, H., Adebahr, B., Darling, J., Adams, E. A. K., de Blok, W. J. G., Kutkin, A., Lucero, D. M., Morganti, Raffaella, Moss, V. A., Oosterloo, T. A., Schulz, R., van der Hulst, J. M., Coolen, A. H. W. M., Damstra, S., Ivashina, M., Loose, G. Marcel, Maan, Yogesh, Mika, Á., Mulder, H., Norden, M. J., Oostrum, L. C., Ruiter, M., van Leeuwen, Joeri, Vermaas, N. J., Vohl, D., Wijnholds, S. J., Ziemke, J.
Publikováno v:
A&A 647, A193 (2021)
We present the serendipitous detection of the two main OH maser lines at 1667 and 1665 MHz associated with IRAS 10597+5926 at z = 0.19612 in the untargeted Apertif Wide-area Extragalactic Survey (AWES), and the subsequent measurement of the OH 1612 M
Externí odkaz:
http://arxiv.org/abs/2101.05818
Autor:
Marcote, B., Callingham, J. R., De Becker, M., Edwards, P. G., Han, Y., Schulz, R., Stevens, J., Tuthill, P. G.
The recently discovered colliding-wind binary (CWB) Apep has been shown to emit luminously from radio to X-rays, with the emission driven by a binary composed of two Wolf-Rayet (WR) stars of one carbon-sequence (WC8) and one nitrogen-sequence (WN4-6b
Externí odkaz:
http://arxiv.org/abs/2012.06571
Autor:
Morganti, R., Oosterloo, T. A., Brienza, M., Jurlin, N., Prandoni, I., Orru', E., Shabala, S. S., Adams, E. A. K., Adebahr, B., Best, P. N., Coolen, A. H. W. M., Damstra, S., de Blok, W. J. G., de Gasperin, F., Denes, H., Hardcastle, M., Hess, K. M., Hut, B., Kondapally, R., Kutkin, A. M., Loose, G. M., Lucero, D. M., Maan, Y., Maccagni, F. M., Mingo, B., Moss, V. A., Mostert, R. I. J., Norden, M. J., Oostrum, L. C., Rottgering, H. J. A., Ruiter, M., Shimwell, T. W., Schulz, R., Vermaas, N. J., Vohl, D., van der Hulst, J. M., van Diepen, G. M., van Leeuwen, J., Ziemke, J.
Supermassive black holes at the centres of galaxies can cycle through periods of activity and quiescence. Characterising the duty cycle of active galactic nuclei is crucial for understanding the impact of the energy they release on the host galaxy. F
Externí odkaz:
http://arxiv.org/abs/2011.08239
Publikováno v:
A&A 647, A63 (2021)
Massive outflows of neutral atomic hydrogen (HI) have been observed in absorption in a number of radio galaxies and are considered a signature of AGN feedback. These outflows on kpc-scales have not been investigated in great detail as they require hi
Externí odkaz:
http://arxiv.org/abs/2010.05996
Autor:
Schulz, R., Kadler, M., Ros, E., Perucho, M., Krichbaum, T. P., Agudo, I., Beuchert, T., Lindqvist, M., Mannheim, K., Wilms, J., Zensus, J. A.
Publikováno v:
A&A 644, A85 (2020)
Flares in radio-loud AGN are thought to be associated with the injection of fresh plasma into the compact jet base. Such flares are usually strongest and appear earlier at shorter radio wavelengths. Hence, VLBI at mm-wavelengths is best suited to stu
Externí odkaz:
http://arxiv.org/abs/2009.01294
Autor:
Oosterloo, T. A., Vedantham, H. K., Kutkin, A. M., Adams, E. A. K., Adebahr, B., Coolen, A. H. W. M., Damstra, S., de Blok, W. J. G., De'nes, H., Hess, K. M., Hut, B., Loose, G. M., Lucero, D. M., Maan, Y., Morganti, R., Moss, V. A., Mulder, H., Norden, M. J., Offringa, A. R., Oostrum, L. C., Orru`, E., Ruiter, M., Schulz, R., Brink, R. H. van den, van der Hulst, J. M., van Leeuwen, J., Vermaas, N. J., Vohl, D., Wijnholds, S. J., Ziemke, J.
The propagation of radio waves from distant compact radio sources through turbulent interstellar plasma in our Galaxy causes these sources to twinkle, a phenomenon called interstellar scintillation. Such scintillations are a unique probe of the micro
Externí odkaz:
http://arxiv.org/abs/2008.07945