Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Mechev, A P"'
Autor:
Shimwell, T. W., Hardcastle, M. J., Tasse, C., Best, P. N., Röttgering, H. J. A., Williams, W. L., Botteon, A., Drabent, A., Mechev, A., Shulevski, A., van Weeren, R. J., Bester, L., Brüggen, M., Brunetti, G., Callingham, J. R., Chyży, K. T., Conway, J. E., Dijkema, T. J., Duncan, K., de Gasperin, F., Hale, C. L., Haverkorn, M., Hugo, B., Jackson, N., Mevius, M., Miley, G. K., Morabito, L. K., Morganti, R., Offringa, A., Oonk, J. B. R., Rafferty, D., Sabater, J., Smith, D. J. B., Schwarz, D. J., Smirnov, O., O'Sullivan, S. P., Vedantham, H., White, G. J., Albert, J. G., Alegre, L., Asabere, B., Bacon, D. J., Bonafede, A., Bonnassieux, E., Brienza, M., Bilicki, M., Bonato, M., Rivera, G. Calistro, Cassano, R., Cochrane, R., Croston, J. H., Cuciti, V., Dallacasa, D., Danezi, A., Dettmar, R. J., Di Gennaro, G., Edler, H. W., Enßlin, T. A., Emig, K. L., Franzen, T. M. O., García-Vergara, C., Grange, Y. G., Gürkan, G., Hajduk, M., Heald, G., Heesen, V., Hoang, D. N., Hoeft, M., Horellou, C., Iacobelli, M., Jamrozy, M., Jelić, V., Kondapally, R., Kukreti, P., Kunert-Bajraszewska, M., Magliocchetti, M., Mahatma, V., Małek, K., Mandal, S., Massaro, F., Meyer-Zhao, Z., Mingo, B., Mostert, R. I. J., Nair, D. G., Nakoneczny, S. J., Nikiel-Wroczyński, B., Orrú, E., Pajdosz-Śmierciak, U., Pasini, T., Prandoni, I., van Piggelen, H. E., Rajpurohit, K., Retana-Montenegro, E., Riseley, C. J., Rowlinson, A., Saxena, A., Schrijvers, C., Sweijen, F., Siewert, T. M., Timmerman, R., Vaccari, M., Vink, J., West, J. L., Wołowska, A., Zhang, X., Zheng, J.
In this data release from the LOFAR Two-metre Sky Survey (LoTSS) we present 120-168MHz images covering 27% of the northern sky. Our coverage is split into two regions centred at approximately 12h45m +44$^\circ$30' and 1h00m +28$^\circ$00' and spannin
Externí odkaz:
http://arxiv.org/abs/2202.11733
Autor:
Osinga, E., Miley, G. K., van Weeren, R. J., Shimwell, T. W., Duncan, K. J., Hardcastle, M. J., Mechev, A. P., Röttgering, H. J. A., Tasse, C., Williams, W. L.
Publikováno v:
A&A 642, A70 (2020)
Various studies have laid claim to finding an alignment of the polarization vectors or radio jets of active galactic nuclei (AGN) over large distances, but these results have proven controversial and so far, there is no clear explanation for this obs
Externí odkaz:
http://arxiv.org/abs/2008.10947
Autor:
Vedantham, H. K., Callingham, J. R., Shimwell, T. W., Tasse, C., Pope, B. J. S., Bedell, M., Snellen, I., Best, P., Hardcastle, M. J., Haverkorn, M., Mechev, A., O'Sullivan, S. P., Röttgering, H. J. A., White, G. J.
Low frequency ($\nu\lesssim 150\,$MHz) stellar radio emission is expected to originate in the outer corona at heights comparable to and larger than the stellar radius. Such emission from the Sun has been used to study coronal structure, mass ejection
Externí odkaz:
http://arxiv.org/abs/2002.08727
Autor:
Drabent, A., Hoeft, M., Mechev, A. P., Oonk, J. B. R., Shimwell, T. W., Sweijen, F., Danezi, A., Schrijvers, C., Manzano, C., Tsigenov, O., Dettmar, R. -J., Brüggen, M., Schwarz, D. J.
The new generation of high-resolution broad-band radio telescopes, like the Low Frequency Array (LOFAR), produces, depending on the level of compression, between 1 to 10 TB of data per hour after correlation. Such a large amount of scientific data de
Externí odkaz:
http://arxiv.org/abs/1910.13835
Autor:
Emig, K. L., Salas, P., de Gasperin, F., Oonk, J. B. R., Toribio, M. C., Mechev, A. P., Rottgering, H. J. A., Tielens, A. G. G. M.
Publikováno v:
A&A 634, A138 (2020)
(abridged) Radio recombination lines (RRLs) at frequencies $\nu$ < 250 MHz trace the cold, diffuse phase of the ISM. Next generation low frequency interferometers, such as LOFAR, MWA and the future SKA, with unprecedented sensitivity, resolution, and
Externí odkaz:
http://arxiv.org/abs/1910.06374
Autor:
Rowlinson, A., Gourdji, K., van der Meulen, K., Meyers, Z. S., Shimwell, T. W., ter Veen, S., Wijers, R. A. M. J., Kuiack, M. J., Shulevski, A., Broderick, J. W., van der Horst, A. J., Tasse, C., Hardcastle, M. J., Mechev, A. P., Williams, W. L.
The nature of the central engines of gamma-ray bursts (GRBs) and the composition of their relativistic jets are still under debate. If the jets are Poynting flux dominated rather than baryon dominated, a coherent radio flare from magnetic re-connecti
Externí odkaz:
http://arxiv.org/abs/1909.02958
Autor:
Cassano, R., Botteon, A., Di Gennaro, G., Brunetti, G., Sereno, M., Shimwell, T. W., van Weeren, R. J., Brüggen, M., Gastaldello, F., Izzo, L., Bîrzan, L., Bonafede, A., Cuciti, V., de Gasperin, F., Rötttgering, H. J. A., Hardcastle, M., Mechev, A. P., Tasse, C.
In this Letter, we report the discovery of a radio halo in the high-redshift galaxy cluster PSZ2 G099.86+58.45 ($z=0.616$) with the LOw Frequency ARray (LOFAR) at 120-168 MHz. This is one of the most distant radio halos discovered so far. The diffuse
Externí odkaz:
http://arxiv.org/abs/1907.10304
Autor:
Mechev, A. P., Shimwell, T. W., Plaat, A., Intema, H., Varbanescu, A. L., Rottgering, H. J. A
LOFAR is a leading aperture synthesis telescope operated in the Netherlands with stations across Europe. The LOFAR Two-meter Sky Survey (LoTSS) will produce more than 3000 14 TB data sets, mapping the entire northern sky at low frequencies. The data
Externí odkaz:
http://arxiv.org/abs/1906.11516
Autor:
Morabito, L. K., Matthews, J. H., Best, P. N., Gürkan, G., Jarvis, M. J., Prandoni, I., Duncan, K. J., Hardcastle, M. J., Kunert-Bajraszewska, M., Mechev, A. P., Mooney, S., Sabater, J., Röttgering, H. J. A., Shimwell, T. W., Smith, D. J. B., Tasse, C., Williams, W. L.
We present a study of the low-frequency radio properties of broad absorption line quasars (BALQSOs) from the LOFAR Two-metre Sky-Survey Data Release 1 (LDR1). The value-added LDR1 catalogue contains Pan-STARRS counterparts, which we match with the Sl
Externí odkaz:
http://arxiv.org/abs/1811.07931
Autor:
Shimwell, T. W., Tasse, C., Hardcastle, M. J., Mechev, A. P., Williams, W. L., Best, P. N., Röttgering, H. J. A., Callingham, J. R., Dijkema, T. J., de Gasperin, F., Hoang, D. N., Hugo, B., Mirmont, M., Oonk, J. B. R., Prandoni, I., Rafferty, D., Sabater, J., Smirnov, O., van Weeren, R. J., White, G. J., Atemkeng, M., Bester, L., Bonnassieux, E., Brüggen, M., Brunetti, G., Chyży, K. T., Cochrane, R., Conway, J. E., Croston, J. H., Danezi, A., Duncan, K., Haverkorn, M., Heald, G. H., Iacobelli, M., Intema, H. T., Jackson, N., Jamrozy, M., Jarvis, M. J., Lakhoo, R., Mevius, M., Miley, G. K., Morabito, L., Morganti, R., Nisbet, D., Orrú, E., Perkins, S., Pizzo, R. F., Schrijvers, C., Smith, D. J. B., Vermeulen, R., Wise, M. W., Alegre, L., Bacon, D. J., van Bemmel, I. M., Beswick, R. J., Bonafede, A., Botteon, A., Bourke, S., Brienza, M., Rivera, G. Calistro, Cassano, R., Clarke, A. O., Conselice, C. J., Dettmar, R. J., Drabent, A., Dumba, C., Emig, K. L., Enßlin, T. A., Ferrari, C., Garrett, M. A., Génova-Santos, R. T., Goyal, A., Gürkan, G., Hale, C., Harwood, J. J., Heesen, V., Hoeft, M., Horellou, C., Jackson, C., Kokotanekov, G., Kondapally, R., Kunert-Bajraszewska, M., Mahatma, V., Mahony, E. K., Mandal, S., McKean, J. P., Merloni, A., Mingo, B., Miskolczi, A., Mooney, S., Nikiel-Wroczyński, B., O'Sullivan, S. P., Quinn, J., Reich, W., Roskowiński, C., Rowlinson, A., Savini, F., Saxena, A., Schwarz, D. J., Shulevski, A., Sridhar, S. S., Stacey, H. R., Urquhart, S., van der Wiel, M. H. D., Varenius, E., Webster, B., Wilber, A.
The LOFAR Two-metre Sky Survey (LoTSS) is an ongoing sensitive, high-resolution 120-168MHz survey of the entire northern sky for which observations are now 20% complete. We present our first full-quality public data release. For this data release 424
Externí odkaz:
http://arxiv.org/abs/1811.07926