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LBCS: the LOFAR Long-Baseline Calibrator Survey

Autor: Jackson, N., Tagore, A., Deller, A., Moldón, J., Varenius, E., Morabito, L., Wucknitz, O., Carozzi, T., Conway, J., Drabent, A., Kapinska, A., Orrù, E., Brentjens, M., Blaauw, R., Kuper, G., Sluman, J., Schaap, J., Vermaas, N., Iacobelli, M., Cerrigone, L., Shulevski, A., ter Veen, S., Fallows, R., Pizzo, R., Sipior, M., Anderson, J., Avruch, M., Bell, M., van Bemmel, I., Bentum, M., Best, P., Bonafede, A., Breitling, F., Broderick, J., Brouw, W., Brüggen, M., Ciardi, B., Corstanje, A., de Gasperin, F., de Geus, E., Eislöffel, J., Engels, D., Falcke, H., Garrett, M., Griessmeier, J., Gunst, A., van Haarlem, M., Heald, G., Hoeft, M., Hörandel, J., Horneffer, A., Intema, H., Juette, E., Kuniyoshi, M., van Leeuwen, J., Loose, G., Maat, P., McFadden, R., McKay-Bukowski, D., McKean, J., Mulcahy, D., Munk, H., Pandey-Pommier, M., Polatidis, A., Reich, W., Röttgering, H., Rowlinson, A., Scaife, A., Schwarz, D., Steinmetz, M., Swinbank, J., Thoudam, S., Toribio, M., Vermeulen, R., Vocks, C., van Weeren, R., Wise, M., Yatawatta, S., Zarka, P.

Publikováno v: A&A 595, A86 (2016)

(abridged). We outline LBCS (the LOFAR Long-Baseline Calibrator Survey), whose aim is to identify sources suitable for calibrating the highest-resolution observations made with the International LOFAR Telescope, which include baselines >1000 km. Suit

Externí odkaz: http://arxiv.org/abs/1608.02133

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M87 at metre wavelengths: the LOFAR picture

Autor: de Gasperin, F., Orru', E., Murgia, M., Merloni, A., Falcke, H., Beck, R., Beswick, R., Birzan, L., Bonafede, A., Bruggen, M., Brunetti, G., Chyzy, K., Conway, J., Croston, J. H., Ensslin, T., Ferrari, C., Heald, G., Heidenreich, S., Jackson, N., Macario, G., McKean, J., Miley, G., Morganti, R., Offringa, A., Pizzo, R., Rafferty, D., Roettgering, H., Shulevski, A., Steinmetz, M., Tasse, C., van der Tol, S., van Driel, W., van Weeren, R. J., van Zwieten, J. E., Alexov, A., Anderson, J., Asgekar, A., Avruch, M., Bell, M., Bell, M. R., Bentum, M., Bernardi, G., Best, P., Breitling, F., Broderick, J. W., Butcher, A., Ciardi, B., Dettmar, R. J., Eisloeffel, J., Frieswijk, W., Gankema, H., Garrett, M., Gerbers, M., Griessmeier, J. M., Gunst, A. W., Hassall, T. E., Hessels, J., Hoeft, M., Horneffer, A., Karastergiou, A., Koehler, J., Koopman, Y., Kuper, G., Maat, P., Mann, G., Mevius, M., Mulcahy, D. D., Munk, H., Nijboer, R., Kuniyoshi, M., Noordam, J., Paas, H., Pandey, M., Pandey, V. N., Polatidis, A., Reich, W., Schoenmakers, A. . P., Sluman, J., Smirnov, O., Sobey, C., Stappers, B., Swinbank, J., Tagger, M., Tang, Y., van Bemmel, I., van Cappellen, W., van Duin, A. P., van Haarlem, M., van Leeuwen, J., Vermeulen, R., Vocks, C., White, S., Wise, M., Wucknitz, O., Zarka, P.

M87 is a giant elliptical galaxy located in the centre of the Virgo cluster, which harbours a supermassive black hole of mass 6.4x10^9 M_sun, whose activity is responsible for the extended (80 kpc) radio lobes that surround the galaxy. The energy gen

Externí odkaz: http://arxiv.org/abs/1210.1346

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The LOFAR radio environment

Autor: Offringa, A. R., de Bruyn, A. G., Zaroubi, S., van Diepen, G., Martinez-Ruby, O., Labropoulos, P., Brentjens, M. A., Ciardi, B., Daiboo, S., Harker, G., Jelic, V., Kazemi, S., Koopmans, L. V. E., Mellema, G., Pandey, V. N., Pizzo, R. F., Schaye, J., Vedantham, H., Veligatla, V., Wijnholds, S. J., Yatawatta, S., Zarka, P., Alexov, A., Anderson, J., Asgekar, A., Avruch, M., Beck, R., Bell, M., Bell, M. R., Bentum, M., Bernardi, G., Best, P., Birzan, L., Bonafede, A., Breitling, F., Broderick, J. W., Bruggen, M., Butcher, H., Conway, J., de Vos, M., Dettmar, R. J., Eisloeffel, J., Falcke, H., Fender, R., Frieswijk, W., Gerbers, M., Griessmeier, J. M., Gunst, A. W., Hassall, T. E., Heald, G., Hessels, J., Hoeft, M., Horneffer, A., Karastergiou, A., Kondratiev, V., Koopman, Y., Kuniyoshi, M., Kuper, G., Maat, P., Mann, G., McKean, J., Meulman, H., Mevius, M., Mol, J. D., Nijboer, R., Noordam, J., Norden, M., Paas, H., Pandey, M., Pizzo, R., Polatidis, A., Rafferty, D., Rawlings, S., Reich, W., Rottgering, H. J. A., Schoenmakers, A. P., Sluman, J., Smirnov, O., Sobey, C., Stappers, B., Steinmetz, M., Swinbank, J., Tagger, M., Tang, Y., Tasse, C., van Ardenne, A., van Cappellen, W., van Duin, A. P., van Haarlem, M., van Leeuwen, J., van Weeren, R. J., Vermeulen, R., Vocks, C., Wijers, R. A. M. J., Wise, M., Wucknitz, O.

Aims: This paper discusses the spectral occupancy for performing radio astronomy with the Low-Frequency Array (LOFAR), with a focus on imaging observations. Methods: We have analysed the radio-frequency interference (RFI) situation in two 24-h survey

Externí odkaz: http://arxiv.org/abs/1210.0393

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Optimized Trigger for Ultra-High-Energy Cosmic-Ray and Neutrino Observations with the Low Frequency Radio Array

Autor: Singh, K., Mevius, M., Scholten, O., Anderson, J. M., van Ardenne, A., Arts, M., Avruch, M., Asgekar, A., Bell, M., Bennema, P., Bentum, M., Bernadi, G., Best, P., Boonstra, A. -J., Bregman, J., van de Brink, R., Broekema, C., Brouw, W., Brueggen, M., Buitink, S., Butcher, H., van Cappellen, W., Ciardi, B., Coolen, A., Damstra, S., Dettmar, R., van Diepen, G., Dijkstra, K., Donker, P., Doorduin, A., Drost, M., van Duin, A., Eisloeffel, J., Falcke, H., Garrett, M., Gerbers, M., Griessmeier, J., Grit, T., Gruppen, P., Gunst, A., van Haarlem, M., Hoeft, M., Holties, H., Horandel, J., Horneffer, L. A., Huijgen, A., James, C., de Jong, A., Kant, D., Kooistra, E., Koopman, Y., Koopmans, L., Kuper, G., Lambropoulos, P., van Leeuwen, J., Loose, M., Maat, P., Mallary, C., McFadden, R., Meulman, H., Mol, J. -D., Morawietz, J., Mulder, E., Munk, H., Nieuwenhuis, L., Nijboer, R., Norden, M., Noordam, J., Overeem, R., Paas, H., Pandey, V. N., Pandey-Pommier, M., Pizzo, R., Polatidis, A., Reich, W., de Reijer, J., Renting, A., Riemers, P., Roettgering, H., Romein, J., Roosjen, J., Ruiter, M., Schoenmakers, A., Schoonderbeek, G., Sluman, J., Smirnov, O., Stappers, B., Steinmetz, M., Stiepel, H., Stuurwold, K., Tagger, M., Tang, Y., ter Veen, S., Vermeulen, R., de Vos, M., Vogt, C., van der Wal, E., Weggemans, H., Wijnholds, S., Wise, M., Wucknitz, O., Yattawatta, S., van Zwieten, J.

Publikováno v: Nucl. Inst. and Meth. 664 (2012) 171-185

When an ultra-high energy neutrino or cosmic ray strikes the Lunar surface a radio-frequency pulse is emitted. We plan to use the LOFAR radio telescope to detect these pulses. In this work we propose an efficient trigger implementation for LOFAR opti

Externí odkaz: http://arxiv.org/abs/1108.5745

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A large light-mass component of cosmic rays at 1017- 1017.5 eV from radio observations

Autor: Buitink, S., Corstanje, A., Falcke, H., Nelles, A., Avruch, M., Bentum, Marinus Jan, Ciardi, B., Ferrari, C., Eislöffel, J.

Publikováno v: Nature, 531(7592), 70-84. Nature Publishing Group

Cosmic rays are the highest-energy particles found in nature. Measurements of the mass composition of cosmic rays with energies of 1017–1018 electronvolts are essential to understanding whether they have galactic or extragalactic sources. It has al

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::7144774c7b91288db444dbf926e3bfe3
https://research.utwente.nl/en/publications/31931d67-645a-49da-8da9-5bc106d8b531

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Čitajuščije ustrojstva / edt. M. L. Avruch.

The LOFAR radio environment

Autor: R.-J. Dettmar, Steve Rawlings, Vibor Jelić, Benedetta Ciardi, Ben Stappers, Aris Karastergiou, Y. Tang, R. Pizzo, V. N. Pandey, A. Alexov, Michael W. Wise, Gianni Bernardi, J. Eisloeffel, J. Sluman, W. A. van Cappellen, Panagiotis Labropoulos, Garrelt Mellema, A. Schoenmakers, M. Mevius, John Conway, P. Maat, M. P. van Haarlem, Rainer Beck, G. van Diepen, M. J. Norden, Heino Falcke, A. W. Gunst, Sarod Yatawatta, R. Nijboer, V. Veligatla, Joop Schaye, J. M. Anderson, D. A. Rafferty, S. Daiboo, M. Kuniyoshi, Michael R. Bell, A. G. Polatidis, A. van Duin, H. Paas, Harish Vedantham, A. G. de Bruyn, V. I. Kondratiev, H. Meulman, A. van Ardenne, Harvey Butcher, J. D. Mol, Laura Birzan, M. Pandey, Michel Tagger, Michiel A. Brentjens, M. Gerbers, Jason W. T. Hessels, George Heald, Matthias Steinmetz, Rob Fender, Marcus Brüggen, Annalisa Bonafede, Gottfried Mann, Mark J. Bentum, Saleem Zaroubi, J. Noordam, Charlotte Sobey, John McKean, John D. Swinbank, Olaf Wucknitz, Gerard H. Kuper, Stefan J. Wijnholds, O. Martinez-Ruby, Léon V. E. Koopmans, Ph. Zarka, Philip Best, Ashish Asgekar, Y. Koopman, R. Vermeulen, A. R. Offringa, R. J. van Weeren, Matthias Hoeft, A. Horneffer, Huub Röttgering, M. Avruch, T. E. Hassall, Martin Bell, J. M. Griessmeier, Geraint Harker, M. de Vos, Ralph A. M. J. Wijers, Christian Vocks, W. Frieswijk, Wolfgang Reich, Oleg Smirnov, Cyril Tasse, J. W. Broderick, F. Breitling, S. Kazemi, J. van Leeuwen

Publikováno v: Astronomy & Astrophysics, 549
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2013, 549, 15 p. ⟨10.1051/0004-6361/201220293⟩
Astronomy & astrophysics, 549:A11. EDP Sciences
Astronomy & Astrophysics, 549, A11
Astronomy & astrophysics, 549:A11, 1-16. EDP Sciences
Astronomy & Astrophysics, 549. EDP Sciences

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc58181acd964756072941ccc36aa20c
http://hdl.handle.net/2066/111267

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