Zobrazeno 31 - 40
of 3 144
pro vyhledávání: '"Vermeulen R"'
Autor:
Nelles, A., Hörandel, J. R., Karskens, T., Krause, M., Buitink, S., Corstanje, A., Enriquez, J. E., Erdmann, M., Falcke, H., Haungs, A., Hiller, R., Huege, T., Krause, R., Link, K., Norden, M. J., Rachen, J. P., Rossetto, L., Schellart, P., Scholten, O., Schröder, F. G., ter Veen, S., Thoudam, S., Trinh, T. N. G., Weidenhaupt, K., Wijnholds, S. J., Anderson, J., Bähren, L., Bell, M. E., Bentum, M. J., Best, P., Bonafede, A., Bregman, J., Brouw, W. N., Bruüggen, M., Butcher, H. R., Carbone, D., Ciardi, B., de Gasperin, F., Duscha, S., Eislöffel, J., Fallows, R. A., Frieswijk, W., Garrett, M. A., van Haarlem, M. P., Heald, G., Hoeft, M., Horneffer, A., Iacobelli, M., Juette, E., Karastergiou, A., Kohler, J., Kondratiev, V. I., Kuniyoshi, M., Kuper, G., van Leeuwen, J., Maat, P., McFadden, R., McKay-Bukowski, D., Orru, E., Paas, H., Pandey-Pommier, M., Pandey, V. N., Pizzo, R., Polatidis, A. G., Reich, W., Röttgering, H., Schwarz, D., Serylak, M., Sluman, J., Smirnov, O., Tasse, C., Toribio, M. C., Vermeulen, R., van Weeren, R. J., Wijers, R. A. M. J., Wucknitz, O., Zarka, P.
Publikováno v:
Journal of Instrumentation 10(11), P11005 - P11005 (2015)
Air showers induced by cosmic rays create nanosecond pulses detectable at radio frequencies. These pulses have been measured successfully in the past few years at the LOw Frequency ARray (LOFAR) and are used to study the properties of cosmic rays. Fo
Externí odkaz:
http://arxiv.org/abs/1507.08932
Autor:
Morosan, D. E., Gallagher, P. T., Zucca, P., O'Flannagain, A., Fallows, R., Reid, H., Magdalenic, J., Mann, G., Bisi, M. M., Kerdraon, A., Konovalenko, A. A., MacKinnon, A. L., Rucker, H. O., Thide, B., Vocks, C., Alexov, A., Anderson, J., Asgekar, A., Avruch, I. M., Bentum, M. J., Bernardi, G., Bonafede, A., Breitling, F., Broderick, J. W., Brouw, W. N., Butcher, H. R., Ciardi, B., de Geus, E., Eisloffel, J., Falcke, H., Frieswijk, W., Garrett, M. A., Griessmeier, J., Gunst, A. W., Hessels, J. W. T., Hoeft, M., Karastergiou, A., Kondratiev, V. I., Kuper, G., van Leeuwen, J., McKay-Bukowski, D., McKean, J. P., Munk, H., Orru, E., Paas, H., Pizzo, R., Polatidis, A. G., Scaife, A. M. M., Sluman, J., Tasse, C., Toribio, M. C., Vermeulen, R., Zarka, P.
Publikováno v:
A&A 580, A65 (2015)
Context. The Sun is an active source of radio emission that is often associated with energetic phenomena ranging from nanoflares to coronal mass ejections (CMEs). At low radio frequencies (<100 MHz), numerous millisecond duration radio bursts have be
Externí odkaz:
http://arxiv.org/abs/1507.07496
Autor:
Sobey, C., Young, N. J., Hessels, J. W. T., Weltevrede, P., Noutsos, A., Stappers, B. W., Kramer, M., Bassa, C., Lyne, A. G., Kondratiev, V. I., Hassall, T. E., Keane, E. F., Bilous, A. V., Breton, R. P., Grießmeier, J. -M., Karastergiou, A., Pilia, M., Serylak, M., ter Veen, S., van Leeuwen, J., Alexov, A., Anderson, J., Asgekar, A., Avruch, I. M., Bell, M. E., Bentum, M. J., Bernardi, G., Best, P., Bîrzan, L., Bonafede, A., Breitling, F., Broderick, J., Brüggen, M., Corstanje, A., Carbone, D., de Geus, E., de Vos, M., van Duin, A., Duscha, S., Eislöffel, J., Falcke, H., Fallows, R. A., Fender, R., Ferrari, C., Frieswijk, W., Garrett, M. A., Gunst, A. W., Hamaker, J. P., Heald, G., Hoeft, M., Hörandel, J., Jütte, E., Kuper, G., Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., McKean, J. P., Mulcahy, D. D., Munk, H., Nelles, A., Norden, M. J., Orrù, E., Paas, H., Pandey-Pommier, M., Pandey, V. N., Pietka, G., Pizzo, R., Polatidis, A. G., Rafferty, D., Renting, A., Röttgering, H., Rowlinson, A., Scaife, A. M. M., Schwarz, D., Sluman, J., Smirnov, O., Steinmetz, M., Stewart, A., Swinbank, J., Tagger, M., Tang, Y., Tasse, C., Thoudam, S., Toribio, C., Vermeulen, R., Vocks, C., van Weeren, R. J., Wijers, R. A. M. J., Wise, M. W., Wucknitz, O., Yatawatta, S., Zarka, P.
PSR B0823+26, a 0.53-s radio pulsar, displays a host of emission phenomena over timescales of seconds to (at least) hours, including nulling, subpulse drifting, and mode-changing. Studying pulsars like PSR B0823+26 provides further insight into the r
Externí odkaz:
http://arxiv.org/abs/1505.03064
Autor:
Shulevski, A., Morganti, R., Barthel, P. D., Murgia, M., van Weeren, R. J., White, G. J., Brüggen, M., Kunert-Bajraszewska, M., Jamrozy, M., Best, P. N., Röttgering, H. J. A., Chyzy, K. T., de Gasperin, F., Bîrzan, L., Brunetti, G., Brienza, M., Rafferty, D. A., Anderson, J., Beck, R., Deller, A., Zarka, P., Schwarz, D., Mahony, E., Orrú, E., Bell, M. E., Bentum, M. J., Bernardi, G., Bonafede, A., Breitling, F., Broderick, J. W., Butcher, H. R., Carbone, D., Ciardi, B., de Geus, E., Duscha, S., Eislöffel, J., Engels, D., Falcke, H., Fallows, R. A., Fender, R., Ferrari, C., Frieswijk, W., Garrett, M. A., Grießmeier, J., Gunst, A. W., Heald, G., Hoeft, M., Hörandel, J., Horneffer, A., van der Horst, A. J., Intema, H., Juette, E., Karastergiou, A., Kondratiev, V. I., Kramer, M., Kuniyoshi, M., Kuper, G., Maat, P., Mann, G., McFadden, R., McKay-Bukowski, D., McKean, J. P., Meulman, H., Mulcahy, D. D., Munk, H., Norden, M. J., Paas, H., Pandey-Pommier, M., Pizzo, R., Polatidis, A. G., Reich, W., Rowlinson, A., Scaife, A. M. M., Serylak, M., Sluman, J., Smirnov, O., Steinmetz, M., Swinbank, J., Tagger, M., Tang, Y., Tasse, C., Thoudam, S., Toribio, M. C., Vermeulen, R., Vocks, C., Wijers, R. A. M. J., Wise, M. W., Wucknitz, O.
Publikováno v:
A&A 579, A27 (2015)
Using observations obtained with the LOw Fequency ARray (LOFAR), the Westerbork Synthesis Radio Telescope (WSRT) and archival Very Large Array (VLA) data, we have traced the radio emission to large scales in the complex source 4C 35.06 located in the
Externí odkaz:
http://arxiv.org/abs/1504.06642
Autor:
Schellart, P., Trinh, T. N. G., Buitink, S., Corstanje, A., Enriquez, J. E., Falcke, H., Hörandel, J. R., Nelles, A., Rachen, J. P., Rossetto, L., Scholten, O., ter Veen, S., Thoudam, S., Ebert, U., Koehn, C., Rutjes, C., Alexov, A., Anderson, J. M., Avruch, I. M., Bentum, M. J., Bernardi, G., Best, P., Bonafede, A., Breitling, F., Broderick, J. W., Brüggen, M., Butcher, H. R., Ciardi, B., de Geus, E., de Vos, M., Duscha, S., Eislöffel, J., Fallows, R. A., Frieswijk, W., Garrett, M. A., Grießmeier, J., Gunst, A. W., Heald, G., Hessels, J. W. T., Hoeft, M., Holties, H. A., Juette, E., Kondratiev, V. I., Kuniyoshi, M., Kuper, G., Mann, G., McFadden, R., McKay-Bukowski, D., McKean, J. P., Mevius, M., Moldon, J., Norden, M. J., Orru, E., Paas, H., Pandey-Pommier, M., Pizzo, R., Polatidis, A. G., Reich, W., Röttgering, H., Scaife, A. M. M., Schwarz, D. J., Serylak, M., Smirnov, O., Steinmetz, M., Swinbank, J., Tagger, M., Tasse, C., Toribio, M. C., van Weeren, R. J., Vermeulen, R., Vocks, C., Wise, M. W., Wucknitz, O., Zarka, P.
We present measurements of radio emission from cosmic ray air showers that took place during thunderstorms. The intensity and polarization patterns of these air showers are radically different from those measured during fair-weather conditions. With
Externí odkaz:
http://arxiv.org/abs/1504.05742
Autor:
Nelles, A., Schellart, P., Buitink, S., Corstanje, A., de Vries, K. D., Enriquez, J. E., Falcke, H., Frieswijk, W., Hörandel, J. R., Scholten, O., ter Veen, S., Thoudam, S., Akker, M. van den, Anderson, J., Asgekar, A., Bell, M. E., Bentum, M. J., Bernardi, G., Best, P., Bregman, J., Breitling, F., Broderick, J., Brouw, W. N., Brüggen, M., Butcher, H. R., Ciardi, B., Deller, A., Duscha, S., Eislöffel, J., Fallows, R. A., Garrett, M. A., Gunst, A. W., Hassall, T. E., Heald, G., Horneffer, A., Iacobelli, M., Juette, E., Karastergiou, A., Kondratiev, V. I., Kramer, M., Kuniyoshi, M., Kuper, G., Maat, P., Mann, G., Mevius, M., Norden, M. J., Paas, H., Pandey-Pommier, M., Pietka, G., Pizzo, R., Polatidis, A. G., Reich, W., Röttgering, H., Scaife, A. M. M., Schwarz, D., Smirnov, O., Stapper, B. W., Steinmetz, M., Stewart, A., Tagger, M., Tang, Y., Tasse, C., Vermeulen, R., Vocks, C., van Weeren, R. J., Wijnholds, S. J., Wucknitz, O., Yatawatta, S., Zarka, P.
Measuring radio emission from air showers offers a novel way to determine properties of the primary cosmic rays such as their mass and energy. Theory predicts that relativistic time compression effects lead to a ring of amplified emission which start
Externí odkaz:
http://arxiv.org/abs/1411.6865
Autor:
Moldón, J., Deller, A. T., Wucknitz, O., Jackson, N., Drabent, A., Carozzi, T., Conway, J., Kapińska, A. D., McKean, P., Morabito, L., Varenius, E., Zarka, P., Anderson, J., Asgekar, A., Avruch, I. M., Bell, M. E., Bentum, M. J., Bernardi, G., Best, P., Bîrzan, L., Bregman, J., Breitling, F., Broderick, J. W., Brüggen, M., Butcher, H. R., Carbone, D., Ciardi, B., de Gasperin, F., de Geus, E., Duscha, S., Eislöffel, J., Engels, D., Falcke, H., Fallows, R. A., Fender, R., Ferrari, C., Frieswijk, W., Garrett, M. A., Grießmeier, J., Gunst, A. W., Hamaker, J. P., Hassall, T. E., Heald, G., Hoeft, M., Juette, E., Karastergiou, A., Kondratiev, V. I., Kramer, M., Kuniyoshi, M., Kuper, G., Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., Morganti, R., Munk, H., Norden, M. J., Offringa, A. R., Orru, E., Paas, H., Pandey-Pommier, M., Pizzo, R., Polatidis, A. G., Reich, W., Röttgering, H., Rowlinson, A., Scaife, A. M. M., Schwarz, D., Sluman, J., Smirnov, O., Stappers, B. W., Steinmetz, M., Tagger, M., Tang, Y., Tasse, C., Thoudam, S., Toribio, M. C., Vermeulen, R., Vocks, C., van Weeren, R. J., White, S., Wise, M. W., Yatawatta, S., Zensus, A.
Publikováno v:
A&A 574, A73 (2015)
Aims. An efficient means of locating calibrator sources for International LOFAR is developed and used to determine the average density of usable calibrator sources on the sky for subarcsecond observations at 140 MHz. Methods. We used the multi-beamin
Externí odkaz:
http://arxiv.org/abs/1411.2743
Autor:
van Weeren, R. J., Williams, W. L., Tasse, C., Rottgering, H. J. A., Rafferty, D. A., van der Tol, S., Heald, G., White, G. J., Shulevski, A., Best, P., Intema, H. T., Bhatnagar, S., Reich, W., Steinmetz, M., van Velzen, S., Ensslin, T. A., Prandoni, I., de Gasperin, F., Jamrozy, M., Brunetti, G., Jarvis, M. J., McKean, J. P., Wise, M. W., Ferrari, C., Harwood, J., Oonk, J. B. R., Hoeft, M., Kunert-Bajraszewska, M., Horellou, C., Wucknitz, O., Bonafede, A., Mohan, N. R., Scaife, A. M. M., Klockner, H. -R., van Bemmel, I. M., Merloni, A., Chyzy, K. T., Engels, D., Falcke, H., Pandey-Pommier, M., Alexov, A., Anderson, J., Avruch, I. M., Beck, R., Bell, M. E., Bentum, M. J., Bernardi, G., Breitling, F., Broderick, J., Brouw, W. N., Bruggen, M., Butcher, H. R., Ciardi, B., de Geus, E., de Vos, M., Deller, A., Duscha, S., Eisloffel, J., Fallows, R. A., Frieswijk, W., Garrett, M. A., Griessmeier, J., Gunst, A. W., Hamaker, J. P., Hassall, T. E., Horandel, J., van der Horst, A., Iacobelli, M., Jackson, N. J., Juette, E., Kondratiev, V. I., Kuniyoshi, M., Maat, P., Mann, G., McKay-Bukowski, D., Mevius, M., Morganti, R., Munk, H., Offringa, A. R., Orru, E., Paas, H., Pandey, V. N., Pietka, G., Pizzo, R., Polatidis, A. G., Renting, A., Rowlinson, A., Schwarz, D., Serylak, M., Sluman, J., Smirnov, O., Stappers, B. W., Stewart, A., Swinbank, J., Tagger, M., Tang, Y., Thoudam, S., Toribio, C., Vermeulen, R., Vocks, C., Zarka, P.
We present LOFAR Low Band observations of the Bootes and 3C295 fields. Our images made at 34, 46, and 62 MHz reach noise levels of 12, 8, and 5 mJy beam$^{-1}$, making them the deepest images ever obtained in this frequency range. In total, we detect
Externí odkaz:
http://arxiv.org/abs/1409.5437
Autor:
Moll, Irene, Marcellis, Rik G. J., Fleuren, Sabine M., Coenen, Marcel L. P., Senden, Rachel H. J., Willems, Paul J. B., Speth, Lucianne A. W. M., Witlox, M. Adhiambo, Meijer, Kenneth, Vermeulen, R. Jeroen
Publikováno v:
Developmental Medicine & Child Neurology; May2024, Vol. 66 Issue 5, p598-609, 12p
Autor:
Coenen, Thijs, van Leeuwen, Joeri, Hessels, Jason W. T., Stappers, Ben W., Kondratiev, Vladislav I., Alexov, A., Breton, R. P., Bilous, A., Cooper, S., Falcke, H., Fallows, R. A., Gajjar, V., Grießmeier, J. -M., Hassall, T. E., Karastergiou, A., Keane, E. F., Kramer, M., Kuniyoshi, M., Noutsos, A., Osłowski, S., Pilia, M., Serylak, M., Schrijvers, C., Sobey, C., ter Veen, S., Verbiest, J., Weltevrede, P., Wijnholds, S., Zagkouris, K., van Amesfoort, A. S., Anderson, J., Asgekar, A., Avruch, I. M., Bell, M. E., Bentum, M. J., Bernardi, G., Best, P., Bonafede, A., Breitling, F., Broderick, J., Brüggen, M., Butcher, H. R., Ciardi, B., Corstanje, A., Deller, A., Duscha, S., Eislöffel, J., Fender, R., Ferrari, C., Frieswijk, W., Garrett, M. A., de Gasperin, F., de Geus, E., Gunst, A. W., Hamaker, J. P., Heald, G., Hoeft, M., van der Horst, A., Juette, E., Kuper, G., Law, C., Mann, G., McFadden, R., McKay-Bukowski, D., McKean, J. P., Munk, H., Orru, E., Paas, H., Pandey-Pommier, M., Polatidis, A. G., Reich, W., Renting, A., Röttgering, H., Rowlinson, A., Scaife, A. M. M., Schwarz, D., Sluman, J., Smirnov, O., Swinbank, J., Tagger, M., Tang, Y., Tasse, C., Thoudam, S., Toribio, C., Vermeulen, R., Vocks, C., van Weeren, R. J., Wucknitz, O., Zarka, P., Zensus, A.
Publikováno v:
A&A 570, A60 (2014)
We have conducted two pilot surveys for radio pulsars and fast transients with the Low-Frequency Array (LOFAR) around 140 MHz and here report on the first low-frequency fast-radio burst limit and the discovery of two new pulsars. The first survey, th
Externí odkaz:
http://arxiv.org/abs/1408.0411