Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Mulcahy, D. D."'
Autor:
McKean, J. P., Godfrey, L. E. H., Vegetti, S., Wise, M. W., Morganti, R., Hardcastle, M. J., Rafferty, D., Anderson, J., Avruch, I. M., Beck, R., Bell, M. E., van Bemmel, I., Bentum, M. J., Bernardi, G., Best, P., Blaauw, R., Bonafede, A., Breitling, F., Broderick, J. W., Bruggen, M., Cerrigone, L., Ciardi, B., de Gasperin, F., Deller, A., Duscha, S., Engels, D., Falcke, H., Fallows, R. A., Frieswijk, W., Garrett, M. A., Griessmeier, J. M., van Haarlem, M. P., Heald, G., Hoeft, M., van der Horst, A. J., Iacobelli, M., Intema, H., Juette, E., Karastergiou, A., Kondratiev, V. I., Koopmans, L. V. E., Kuniyoshi, M., Kuper, G., van Leeuwen, J., Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., Mulcahy, D. D., Munk, H., Nelles, A., Orru, E., Paas, H., Pandey-Pommier, M., Pietka, M., Pizzo, R., Polatidis, A. G., Reich, W., Rottgering, H. J. A., Rowlinson, A., Scaife, A. M. M., Serylak, M., Shulevski, A., Sluman, J., Smirnov, O., Steinmetz, M., Stewart, A., Swinbank, J., Tagger, M., Thoudam, S., Toribio, M. C., Vermeulen, R., Vocks, C., van Weeren, R. J., Wucknitz, O., Yatawatta, S., Zarka, P.
Publikováno v:
MNRAS, 463, 3143 (2016)
The low-frequency radio spectra of the hotspots within powerful radio galaxies can provide valuable information about the physical processes operating at the site of the jet termination. These processes are responsible for the dissipation of jet kine
Externí odkaz:
http://arxiv.org/abs/2103.16961
Autor:
Cantwell, T. M., Bray, J. D., Croston, J. H., Scaife, A. M. M., Mulcahy, D. D., Best, P. N., Bruggen, M., Brunetti, G., Callingham, J. R., Clarke, A. O., Hardcastle, M. J., Harwood, J. J., Heald, G., Heesen, V., Iacobelli, M., Jamrozy, M., Morganti, R., Orru, E., O'Sullivan, S. P., Riseley, C. J., Rottgering, H. J. A., Shulevski, A., Sridhar, S. S., Tasse, C., Van Eck, C. L.
We present LOFAR observations at 150 MHz of the borderline FRI/FRII giant radio galaxy NGC 6251. This paper presents the most sensitive and highest-resolution images of NGC 6251 at these frequencies to date, revealing for the first time a low-surface
Externí odkaz:
http://arxiv.org/abs/2004.11104
Publikováno v:
A&A 633, A5 (2020)
Three deep radio continuum surveys of the Andromeda galaxy, M 31, were performed at 11.3, 6.2, and 3.6 cm wavelength with the Effelsberg 100-m telescope. At all wavelengths, the total and polarized emission is concentrated in a ring-like structure be
Externí odkaz:
http://arxiv.org/abs/1910.09634
Autor:
Neld, A., Horellou, C., Mulcahy, D. D., Beck, R., Bourke, S., Carozzi, T. D., Chyży, K. T., Conway, J. E., Farnes, J. S., Fletcher, A., Haverkorn, M., Heald, G., Horneffer, A., Nikiel-Wroczyński, B., Paladino, R., Sridhar, S. S., Van Eck, C. L.
Publikováno v:
A&A 617, A136 (2018)
The new generation of broad-band radio continuum surveys will provide large data sets with polarization information. New algorithms need to be developed to extract reliable catalogs of linearly polarized sources that can be used to characterize those
Externí odkaz:
http://arxiv.org/abs/1807.09240
Autor:
Mulcahy, D. D., Horneffer, A., Beck, R., Krause, M., Schmidt, P., Basu, A., Chyzy, K. T., Dettmar, R. -J., Haverkorn, M., Heald, G., Heesen, V., Horellou, C., Iacobelli, M., Nikiel-Wroczynski, B., Paladino, R., Scaife, A. M. M., Sridhar, Sarrvesh S., Strom, R. G., Tabatabaei, F. S., Cantwel, T., Carey, S. H., Grainge, K., Hickish, J., Perrot, Y., Razavi-Ghods, N., Scott, P., Titterington, D.
Low-frequency radio continuum observations of edge-on galaxies are ideal to study cosmic-ray electrons (CREs) in halos via radio synchrotron emission and to measure magnetic field strengths. We obtained new observations of the edge-on spiral galaxy N
Externí odkaz:
http://arxiv.org/abs/1804.00752
Autor:
Heesen, V., Krause, M., Beck, R., Adebahr, B., Bomans, D. J., Carretti, E., Dumke, M., Heald, G., Irwin, J., Koribalski, B. S., Mulcahy, D. D., Westmeier, T., Dettmar, R. -J.
We present radio continuum maps of 12 nearby ($D\leq 27~\rm Mpc$), edge-on ($i\geq 76^{\circ}$), late-type spiral galaxies mostly at $1.4$ and 5 GHz, observed with the Australia Telescope Compact Array, Very Large Array, Westerbork Synthesis Radio Te
Externí odkaz:
http://arxiv.org/abs/1801.05211
Autor:
Van Eck, C. L., Haverkorn, M., Alves, M. I. R., Beck, R., Best, P., Carretti, E., Chyży, K. T., Farnes, J. S., Ferrière, K., Hardcastle, M. J., Heald, G., Horellou, C., Iacobelli, M., Jelić, V., Mulcahy, D. D., O'Sullivan, S. P., Polderman, I. M., Reich, W., Riseley, C. J., Röttgering, H., Schnitzeler, D. H. F. M., Shimwell, T. W., Vacca, V., Vink, J., White, G. J.
Publikováno v:
A&A 613, A58 (2018)
The polarization properties of radio sources at very low frequencies (<200 MHz) have not been widely measured, but the new generation of low-frequency radio telescopes, including the Low Frequency Array (LOFAR: a Square Kilometre Array Low pathfinder
Externí odkaz:
http://arxiv.org/abs/1801.04467
Autor:
Farnes, J. S., Heald, G., Junklewitz, H., Mulcahy, D. D., Haverkorn, M., Van Eck, C. L., Riseley, C. J., Brentjens, M., Horellou, C., Vacca, V., Jones, D. I., Horneffer, A., Paladino, R.
The optimal source-finding strategy for linear polarization data is an unsolved problem, with many inhibitive factors imposed by the technically-challenging nature of polarization observations. Such an algorithm is essential for Square Kilometre Arra
Externí odkaz:
http://arxiv.org/abs/1711.04516
Autor:
Morosan, D. E., Gallagher, P. T., Fallows, R. A., Reid, H., Mann, G., Bisi, M. M., Magdalenic, J., Rucker, H. O., Thide, B., Vocks, C., Anderson, J., Asgekar, A., Avruch, I. M., Bell, M. E., Bentum, M. J., Best, P., Blaauw, R., Bonafede, A., Breitling, F., Broderick, J. W., Bruggen, M., Cerrigone, L., Ciardi, B., de Geus, E., Duscha, S., Eisloffel, J., Falcke, H., Garrett, M. A., Griessmeier, J. M., Gunst, A. W., Hoeft, M., Iacobelli, M., Juette, E., Kuper, G., McFadden, R., McKay-Bukowski, D., McKean, J. P., Mulcahy, D. D., Munk, H., Nelles, A., Orru, E., Paas, H., Pandey-Pommier, M., Pandey, V. N., Pizzo, R., Polatidis, A. G., Reich, W., Schwarz, D. J., Sluman, J., Smirnov, O., Steinmetz, M., Tagger, M., ter Veen, S., Thoudam, S., Toribio, M. C., Vermeulen, R., van Weeren, R. J., Wucknitz, O., Zarka, P.
Publikováno v:
A&A 606, A81 (2017)
Context. The Sun is an active star that produces large-scale energetic events such as solar flares and coronal mass ejections and numerous smaller-scale events such as solar jets. These events are often associated with accelerated particles that can
Externí odkaz:
http://arxiv.org/abs/1707.03428
Autor:
Hoang, D. N., Shimwell, T. W., Stroe, A., Akamatsu, H., Brunetti, G., Donnert, J. M. F., Intema, H. T., Mulcahy, D. D., Röttgering, H. J. A., van Weeren, R. J., Bonafede, A., Brüggen, M., Cassano, R., Chyży, K. T., Enßlin, T., Ferrari, C., de Gasperin, F., Gu, L., Hoeft, M., Miley, G. K., Orrú, E., Pizzo, R., White, G. J.
Previous studies have shown that CIZA J2242.8+5301 (the 'Sausage' cluster, $z=0.192$) is a massive merging galaxy cluster that hosts a radio halo and multiple relics. In this paper we present deep, high fidelity, low-frequency images made with the LO
Externí odkaz:
http://arxiv.org/abs/1706.09903