Zobrazeno 1 - 10
of 316
pro vyhledávání: '"Coenen T"'
Binary millisecond pulsars (MSPs) provide several opportunities for research of fundamental physics. However, finding them can be challenging. Several subdwarf B (sdB) binary systems with possible neutron star companions have been identified, allowin
Externí odkaz:
http://arxiv.org/abs/1909.11534
Autor:
Cendes, Y., Prasad, P., Rowlinson, A., Wijers, R. A. M. J., Swinbank, J. D., Law, C. J., van der Horst, A. J., Carbone, D., Broderick, J. W., Staley, T. D., Stewart, A. J., Huizinga, F., Molenaar, G., Alexov, A., Bell, M. E., Coenen, T., Corbel, S., Eislöffel, J., Fender, R., Grießmeier, J. -M., Jonker, P., Kramer, M., Kuniyoshi, M., Pietka, M., Stappers, B., Wise, M., Zarka, P.
With their wide fields of view and often relatively long coverage of any position in the sky in imaging survey mode, modern radio telescopes provide a data stream that is naturally suited to searching for rare transients. However, Radio Frequency Int
Externí odkaz:
http://arxiv.org/abs/1804.04708
Autor:
Noutsos, A., Sobey, C., Kondratiev, V. I., Weltevrede, P., Verbiest, J. P. W., Karastergiou, A., Kramer, M., Kuniyoshi, M., Alexov, A., Breton, R. P., Bilous, A. V., Cooper, S., Falcke, H., Grießmeier, J. -M., Hassall, T. E., Hessels, J. W. T., Keane, E. F., Osłowski, S., Pilia, M., Serylak, M., Stappers, B. W., ter Veen, S., van Leeuwen, J., Zagkouris, K., Anderson, K., Bähren, L., Bell, M., Broderick, J., Carbone, D., Cendes, Y., Coenen, T., Corbel, S., Eislöffel, J., Fender, R., Garsden, H., Jonker, P., Law, C., Marko, S., Masters, J., Miller-Jones, J., Molenaar, G., Osten, R., Pietka, M., Rol, E., Rowlinson, A., Scheers, B., Spreeuw, H., Staley, T., Stewart, A., Swinbank, J., Wijers, R., Wijnands, R., Wise, M., Zarka, P., van der Horst, A.
Publikováno v:
A&A 576, A62 (2015)
We present the highest-quality polarisation profiles to date of 16 non-recycled pulsars and four millisecond pulsars, observed below 200 MHz with the LOFAR high-band antennas. Based on the observed profiles, we perform an initial investigation of exp
Externí odkaz:
http://arxiv.org/abs/1501.03312
Autor:
Cendes, Y., Wijers, R. A. M. J., Swinbank, J. D., Rowlinson, A., van der Horst, A. J., Carbone, D., Broderick, J. W., Staley, T. D., Stewart, A. J., Molenaar, G., Huizinga, F., Alexov, A., Bell, M. E., Coenen, T., Corbel, S., Eislöffel, J., Fender, R., Grießmeier, J., Hessel, J., Jonker, P., Kramer, M., Kuniyoshi, M., Law, C. J., Markoff, S., Pietka, M., Stappers, B., Wise, M., Zarka, P.
Aims: We have analyzed low frequency radio data of tidal disruption event (TDE) Swift J1644+57 to search for a counterpart. We consider how brief transient signals (on the order of seconds or minutes) originating from this location would appear in ou
Externí odkaz:
http://arxiv.org/abs/1412.3986
Autor:
van Haarlem, M. P., Wise, M. W., Gunst, A. W., Heald, G., McKean, J. P., Hessels, J. W. T., de Bruyn, A. G., Nijboer, R., Swinbank, J., Fallows, R., Brentjens, M., Nelles, A., Beck, R., Falcke, H., Fender, R., Hörandel, J., Koopmans, L. V. E., Mann, G., Miley, G., Röttgering, H., Stappers, B. W., Wijers, R. A. M. J., Zaroubi, S., Akker, M. van den, Alexov, A., Anderson, J., Anderson, K., van Ardenne, A., Arts, M., Asgekar, A., Avruch, I. M., Batejat, F., Bähren, L., Bell, M. E., Bell, M. R., van Bemmel, I., Bennema, P., Bentum, M. J., Bernardi, G., Best, P., Bîrzan, L., Bonafede, A., Boonstra, A. -J., Braun, R., Bregman, J., Breitling, F., van de Brink, R. H., Broderick, J., Broekema, P. C., Brouw, W. N., Brüggen, M., Butcher, H. R., van Cappellen, W., Ciardi, B., Coenen, T., Conway, J., Coolen, A., Corstanje, A., Damstra, S., Davies, O., Deller, A. T., Dettmar, R. -J., van Diepen, G., Dijkstra, K., Donker, P., Doorduin, A., Dromer, J., Drost, M., van Duin, A., Eislöffel, J., van Enst, J., Ferrari, C., Frieswijk, W., Gankema, H., Garrett, M. A., de Gasperin, F., Gerbers, M., de Geus, E., Grießmeier, J. -M., Grit, T., Gruppen, P., Hamaker, J. P., Hassall, T., Hoeft, M., Holties, H., Horneffer, A., van der Horst, A., van Houwelingen, A., Huijgen, A., Iacobelli, M., Intema, H., Jackson, N., Jelic, V., de Jong, A., Juette, E., Kant, D., Karastergiou, A., Koers, A., Kollen, H., Kondratiev, V. I., Kooistra, E., Koopman, Y., Koster, A., Kuniyoshi, M., Kramer, M., Kuper, G., Lambropoulos, P., Law, C., van Leeuwen, J., Lemaitre, J., Loose, M., Maat, P., Macario, G., Markoff, S., Masters, J., McKay-Bukowski, D., Meijering, H., Meulman, H., Mevius, M., Middelberg, E., Millenaar, R., Miller-Jones, J. C. A., Mohan, R. N., Mol, J. D., Morawietz, J., Morganti, R., Mulcahy, D. D., Mulder, E., Munk, H., Nieuwenhuis, L., van Nieuwpoort, R., Noordam, J. E., Norden, M., Noutsos, A., Offringa, A. R., Olofsson, H., Omar, A., Orrú, E., Overeem, R., Paas, H., Pandey-Pommier, M., Pandey, V. N., Pizzo, R., Polatidis, A., Rafferty, D., Rawlings, S., Reich, W., de Reijer, J. -P., Reitsma, J., Renting, A., Riemers, P., Rol, E., Romein, J. W., Roosjen, J., Ruiter, M., Scaife, A., van der Schaaf, K., Scheers, B., Schellart, P., Schoenmakers, A., Schoonderbeek, G., Serylak, M., Shulevski, A., Sluman, J., Smirnov, O., Sobey, C., Spreeuw, H., Steinmetz, M., Sterks, C. G. M., Stiepel, H. -J., Stuurwold, K., Tagger, M., Tang, Y., Tasse, C., Thomas, I., Thoudam, S., Toribio, M. C., van der Tol, B., Usov, O., van Veelen, M., van der Veen, A. -J., ter Veen, S., Verbiest, J. P. W., Vermeulen, R., Vermaas, N., Vocks, C., Vogt, C., de Vos, M., van der Wal, E., van Weeren, R., Weggemans, H., Weltevrede, P., White, S., Wijnholds, S. J., Wilhelmsson, T., Wucknitz, O., Yatawatta, S., Zarka, P., Zensus, A., van Zwieten, J.
LOFAR, the LOw-Frequency ARray, is a new-generation radio interferometer constructed in the north of the Netherlands and across europe. Utilizing a novel phased-array design, LOFAR covers the largely unexplored low-frequency range from 10-240 MHz and
Externí odkaz:
http://arxiv.org/abs/1305.3550
Autor:
Hassall, T. E., Stappers, B. W., Weltevrede, P., Hessels, J. W. T., Alexov, A., Coenen, T., Karastergiou, A., Kramer, M., Keane, E. F., Kondratiev, V. I., van Leeuwen, J., Noutsos, A., Pilia, M., Serylak, M., Sobey, C., Zagkouris, K., Fender, R., Bell, M. E., Broderick, J., Eisloffel, J., Falcke, H., Griessmeier, J. -M., Kuniyoshi, M., Miller-Jones, J. C. A., Wise, M. W., Wucknitz, O., Zarka, P., Asgekar, A., Batejat, F., Bentum, M. J., Bernardi, G., Best, P., Bonafede, A., Breitling, F., Bruggen, M., Butcher, H. R., Ciardi, B., de Gasperin, F., de Reijer, J. -P., Duscha, S., Fallows, R. A., Ferrari, C., Frieswijk, W., Garrett, M. A., Gunst, A. W., Heald, G., Hoeft, M., Juette, E., Maat, P., McKean, J. P., Norden, M. J., Pandey-Pommier, M., Pizzo, R., Polatidis, A. G., Reich, W., Rottgering, H., Sluman, J., Tang, Y., Tasse, C., Vermeulen, R., van Weeren, R. J., Wijnholds, S. J., Yatawatta, S.
Some radio pulsars show clear drifting subpulses, in which subpulses are seen to drift in pulse longitude in a systematic pattern. Here we examine how the drifting subpulses of PSR B0809+74 evolve with time and observing frequency. We show that the s
Externí odkaz:
http://arxiv.org/abs/1302.2321
Autor:
Hassall, T. E., Stappers, B. W., Hessels, J. W. T., Kramer, M., Alexov, A., Anderson, K., Coenen, T., Karastergiou, A., Keane, E. F., Kondratiev, V. I., Lazaridis, K., van Leeuwen, J., Noutsos, A., Serylak, M., Sobey, C., Verbiest, J. P. W., Weltevrede, P., Zagkouris, K., Fender, R., Wijers, R. A. M. J., Bahren, L., Bell, M. E., Broderick, J. W., Corbel, S., Daw, E. J., Dhillon, V. S., Eisloffel, J., Falcke, H., Griessmeier, J. -M., Jonker, P., Law, C., Markoff, S., Miller-Jones, J. C. A., Osten, R., Rol, E., Scaife, A. M. M., Scheers, B., Schellart, P., Spreeuw, H., Swinbank, J., ter Veen, S., Wise, M. W., Wijnands, R., Wucknitz, O., Zarka, P., Asgekar, A., Bell, M. R., Bentum, M. J., Bernardi, G., Best, P., Bonafede, A., Boonstra, A. J., Brentjens, M., Brouw, W. N., Bruggen, M., Butcher, H. R., Ciardi, B., Garrett, M. A., Gerbers, M., Gunst, A. W., van Haarlem, M. P., Heald, G., Hoeft, M., Holties, H., de Jong, A., Koopmans, L. V. E., Kuniyoshi, M., Kuper, G., Loose, G. M., Maat, P., Masters, J., McKean, J. P., Meulman, H., Mevius, M., Munk, H., Noordam, J. E., Orru, E., Paas, H., Pandey-Pommier, M., Pandey, V. N., Pizzo, R., Polatidis, A., Reich, W., Rottgering, H., Sluman, J., Steinmetz, M., Sterks, C. G. M., Tagger, M., Tang, Y., Tasse, C., Vermeulen, R., van Weeren, R. J., Wijnholds, S. J., Yatawatta, S.
Publikováno v:
A&A Volume 543, July 2012
Dispersion in the interstellar medium is a well known phenomenon that follows a simple relationship, which has been used to predict the time delay of dispersed radio pulses since the late 1960s. We performed wide-band simultaneous observations of fou
Externí odkaz:
http://arxiv.org/abs/1204.3864
We present a novel cathodoluminescence spectroscopy technique which combines a deep subwavelength excitation resolution with angle-resolved detection capabilities. The cathodoluminescence emission is collected by a paraboloid mirror (effective NA=0.9
Externí odkaz:
http://arxiv.org/abs/1107.3632
Autor:
Stappers, B. W., Hessels, J. W. T., Alexov, A., Anderson, K., Coenen, T., Hassall, T., Karastergiou, A., Kondratiev, V. I., Kramer, M., van Leeuwen, J., Mol, J. D., Noutsos, A., Romein, J. W ., Weltevrede, P., Fender, R., Wijers, R. A. M. J., Bähren, L., Bell, M. E., Broderick, J., Daw, E. J., Dhillon, V. S., Eislöffel, J., Falcke, H., Griessmeier, J., Law, C., Markoff, S., Miller-Jones, J. C. A., Scheers, B., Spreeuw, H., Swinbank, J., ter Veen, S., Wise, M. W., Wucknitz, O., Zarka, P., Anderson, J., Asgekar, A., Avruch, I. M., Beck, R., Bennema, P., Bentum, M. J., Best, P., Bregman, J., Brentjens, M., van de Brink, R. H., Broekema, P. C., Brouw, W. N., Brüggen, M., de Bruyn, A. G., Butcher, H. R., Ciardi, B., Conway, J., Dettmar, R. -J., van Duin, A., van Enst, J., Garrett, M., Gerbers, M., Grit, T., Gunst, A., van Haarlem, M. P., Hamaker, J. P., Heald, G., Hoeft, M., Holties, H., Horneffer, A., Koopmans, L. V. E., Kuper, G., Loose, M., Maat, P., McKay-Bukowski, D., McKean, J. P., Miley, G., Morganti, R., Nijboer, R., Noordam, J. E., Norden, M., Olofsson, H., Pandey-Pommier, M., Polatidis, A., Reich, W., Röttgering, H., Schoenmakers, A., Sluman, J., Smirnov, O., Steinmetz, M., Sterks, C. G. M., Tagger, M., Tang, Y., Vermeulen, R., Vermaas, N., Vogt, C., de Vos, M., Wijnholds, S. J., Yatawatta, S., Zensus, A.
Low frequency radio waves, while challenging to observe, are a rich source of information about pulsars. The LOw Frequency ARray (LOFAR) is a new radio interferometer operating in the lowest 4 octaves of the ionospheric "radio window": 10-240MHz, tha
Externí odkaz:
http://arxiv.org/abs/1104.1577
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