Zobrazeno 1 - 10
of 5 849
pro vyhledávání: '"Williams, W. A."'
Autor:
Groeneveld, C., van Weeren, R. J., Osinga, E., Williams, W. L., Callingham, J. R., de Gasperin, F., Botteon, A., Shimwell, T., de Jong, J. M. G. H. J., Jansen, L. F., Miley, G. K., Brunetti, G., Brüggen, M., Röttgering, H. J. A.
Publikováno v:
Nature Astronomy 8 (2024) 786-795
The largely unexplored decameter radio band (10-30 MHz) provides a unique window for studying a range of astronomical topics, such as auroral emission from exoplanets, inefficient cosmic ray acceleration mechanisms, fossil radio plasma, and free-free
Externí odkaz:
http://arxiv.org/abs/2405.05311
Autor:
Rivera, G. Calistro, Alexander, D. M., Harrison, C. M., Fawcett, V. A., Best, P. N., Williams, W. L., Hardcastle, M. J., Rosario, D. J., Smith, D. J. B., Arnaudova, M. I., Escott, E., Gürkan, G., Kondapally, R., Miley, G., Morabito, L. K., Petley, J., Prandoni, I., Röttgering, H. J. A., Yue, B. -H.
We present a comprehensive study of the physical origin of radio emission in optical quasars at redshifts z < 2.5. We focus particularly on the associations between compact radio emission, dust reddening, and outflows identified in our earlier work.
Externí odkaz:
http://arxiv.org/abs/2312.10177
Autor:
Hardcastle, M. J., Horton, M. A., Williams, W. L., Duncan, K. J., Alegre, L., Barkus, B., Croston, J. H., Dickinson, H., Osinga, E., Röttgering, H. J. A., Sabater, J., Shimwell, T. W., Smith, D. J. B., Best, P. N., Botteon, A., Brüggen, M., Drabent, A., de Gasperin, F., Gürkan, G., Hajduk, M., Hale, C. L., Hoeft, M., Jamrozy, M., Kunert-Bajraszewska, M., Kondapally, R., Magliocchetti, M., Mahatma, V. H., Mostert, R. I. J., O'Sullivan, S. P., Pajdosz-Śmierciak, U., Petley, J., Pierce, J. C. S., Prandoni, I., Schwarz, D. J., Shulewski, A., Siewert, T. M., Stott, J. P., Tang, H., Vaccari, M., Zheng, X., Bailey, T., Desbled, S., Goyal, A., Gonano, V., Hanset, M., Kurtz, W., Lim, S. M., Mielle, L., Molloy, C. S., Roth, R., Terentev, I. A., Torres, M.
Publikováno v:
A&A 678, A151 (2023)
The second data release of the LOFAR Two-Metre Sky Survey (LoTSS) covers 27% of the northern sky, with a total area of $\sim 5,700$ deg$^2$. The high angular resolution of LOFAR with Dutch baselines (6 arcsec) allows us to carry out optical identific
Externí odkaz:
http://arxiv.org/abs/2309.00102
Autor:
Best, P. N., Kondapally, R., Williams, W. L., Cochrane, R. K., Duncan, K. J., Hale, C. L., Haskell, P., Malek, K., McCheyne, I., Smith, D. J. B., Wang, L., Botteon, A., Bonato, M., Bondi, M., Rivera, G. Calistro, Gao, F., Gurkan, G., Hardcastle, M. J., Jarvis, M. J., Mingo, B., Miraghaei, H., Morabito, L. K., Nisbet, D., Prandoni, I., Rottgering, H. J. A., Sabater, J., Shimwell, T., Tasse, C., van Weeren, R.
Source classifications, stellar masses and star formation rates are presented for 80,000 radio sources from the first data release of the Low Frequency Array Two-metre Sky Survey (LoTSS) Deep Fields, which represents the widest deep radio survey ever
Externí odkaz:
http://arxiv.org/abs/2305.05782
Fundamental Symmetries, Neutrons, and Neutrinos (FSNN): Whitepaper for the 2023 NSAC Long Range Plan
Autor:
Acharya, B., Adams, C., Aleksandrova, A. A., Alfonso, K., An, P., Baeßler, S., Balantekin, A. B., Barbeau, P. S., Bellini, F., Bellini, V., Beminiwattha, R. S., Bernauer, J. C., Bhattacharya, T., Bishof, M., Bolotnikov, A. E., Breur, P. A., Brodeur, M., Brodsky, J. P., Broussard, L. J., Brunner, T., Burdette, D. P., Caylor, J., Chiu, M., Cirigliano, V., Clark, J. A., Clayton, S. M., Daniels, T. V., Darroch, L., Davoudi, Z., de Gouvêa, A., Dekens, W., Demarteau, M., DeMille, D., Deshpande, A., Detwiler, J. A., Dodson, G. W., Dolinski, M. J., Elliott, S. R., Engel, J., Erler, J., Filippone, B. W., Fomin, N., Formaggio, J. A., Friesen, F. Q. L., Fry, J., Fujikawa, B. K., Fuller, G., Fuyuto, K., Gallant, A. T., Gallina, G., Ruiz, A. Garcia, Ruiz, R. F. Garcia, Gardner, S., Gonzalez, F. M., Gratta, G., Gruszko, J., Gudkov, V., Guiseppe, V. E., Gutierrez, T. D., Hansen, E. V., Hardy, C. A., Haxton, W. C., Hayen, L., Hedges, S., Heeger, K. M., Heffner, M., Heise, J., Henning, R., Hergert, H., Hertzog, D. W., Aguilar, D. Hervas, Holt, J. D., Hoogerheide, S. F., Hoppe, E. W., Horoi, M., Howell, C. R., Huang, M., Hutzler, N. R., Imam, K., Ito, T. M., Jamil, A., Janssens, R. V., Jayich, A. M., Jones, B. J. P., Kammel, P., Liu, K. F., Khachatryan, V., King, P. M., Klein, J. R., Kneller, J. P., Kolomensky, Yu. G., Korsch, W., Krücken, R., Kumar, K. S., Launey, K. D., Lawrence, D., Leach, K. G., Lehnert, B., Lenardo, B. G., Li, Z., Lin, H. -W., Longfellow, B., Lopez-Caceres, S., Lunardini, C., MacLellan, R., Markoff, D. M., Maruyama, R. H., Mathews, D. G., Melconian, D., Mereghetti, E., Mohanmurthy, P., Moore, D. C., Mueller, P. E., Mumm, H. P., Nazarewicz, W., Newby, J., Nicholson, A. N., Novitski, E., Ondze, J. C. Nzobadila, O'Donnell, T., Gann, G. D. Orebi, Orrell, J. L., Ouellet, J. L., Parno, D. S., Paschke, K. D., Pastore, S., Pattie Jr, R. W., Petrov, A. A., Pitt, M. L., Plaster, B., Pocanic, D., Pocar, A., Poon, A. W. P., Radford, D. C., Rahangdale, H., Rasco, B. C., Rasiwala, H., Redwine, R. P., Ritz, A., Rogers, L., Ron, G., Saldanha, R., Sangiorgio, S., Sargsyan, G. H., Saunders, A., Savard, G., Schaper, D. C., Scholberg, K., Scielzo, N. D., Seng, C. -Y., Shindler, A., Singh, J. T., Singh, M., Singh, V., Snow, W. M., Soma, A. K., Souder, P. A., Speller, D. H., Stachurska, J., Surukuchi, P. T., Oregui, B. Tapia, Tomalak, O., Torres, J. A., Tyuka, O. A., VanDevender, B. A., Varriano, L., Vogt, R., Walker-Loud, A., Wamba, K., Watkins, S. L., Wietfeldt, F. E., Williams, W. D., Wilson, J. T., Winslow, L., Yan, X. L., Yang, L., Young, A. R., Zheng, X., Zhou, Y.
This whitepaper presents the research priorities decided on by attendees of the 2022 Town Meeting for Fundamental Symmetries, Neutrons and Neutrinos, which took place December 13-15, 2022 in Chapel Hill, NC, as part of the Nuclear Science Advisory Co
Externí odkaz:
http://arxiv.org/abs/2304.03451
Autor:
de Gasperin, F., Edler, H. W., Williams, W. L., Callingham, J. R., Asabere, B., Bruggen, M., Brunetti, G., Dijkema, T. J., Hardcastle, M. J., Iacobelli, M., Offringa, A., Norden, M. J., Rottgering, H. J. A., Shimwell, T., van Weeren, R. J., Tasse, C., Bomans, D. J., Bonafede, A., Botteon, A., Cassano, R., Chyzy, K. T., Cuciti, V., Emig, K. L., Kadler, M., Miley, G., Mingo, B., Oei, M. S. S. L., Prandoni, I., Schwarz, D. J., Zarka, P.
Publikováno v:
A&A 673, A165 (2023)
The Low Frequency Array (LOFAR) is the only existing radio interferometer able to observe at ultra-low frequencies (<100 MHz) with high resolution (<15") and high sensitivity (<1 mJy/beam). To exploit these capabilities, the LOFAR Surveys Key Science
Externí odkaz:
http://arxiv.org/abs/2301.12724
Autor:
Slob, M. M., Callingham, J. R., Röttgering, H. J. A., Williams, W. L., Duncan, K. J., de Gasperin, F., Hardcastle, M. J., Miley, G. K.
Publikováno v:
A&A 668, A186 (2022)
We present a sample of 373 peaked-spectrum (PS) sources with spectral peaks around 150MHz, selected using a subset of two LOFAR all-sky surveys, the LOFAR Two Meter Sky Survey and the LOFAR LBA Sky Survey. These surveys are the most sensitive low-fre
Externí odkaz:
http://arxiv.org/abs/2210.16570
Autor:
Morabito, Leah K., Sweijen, F., Radcliffe, J. F., Best, P. N., Kondapally, Rohit, Bondi, Marco, Bonato, Matteo, Duncan, K. J., Prandoni, Isabella, Shimwell, T. W., Williams, W. L., van Weeren, R. J., Conway, J. E., Rivera, G. Calistro
Identifying active galactic nuclei (AGN) and isolating their contribution to a galaxy's energy budget is crucial for studying the co-evolution of AGN and their host galaxies. Brightness temperature ($T_b$) measurements from high-resolution radio obse
Externí odkaz:
http://arxiv.org/abs/2207.13096
Autor:
Kondapally, R., Best, P. N., Cochrane, R. K., Sabater, J., Duncan, K. J., Hardcastle, M. J., Haskell, P., Mingo, B., Röttgering, H. J. A., Smith, D. J. B., Williams, W. L., Bonato, M., Rivera, G. Calistro, Gao, F., Hale, C. L., Małek, K., Miley, G. K., Prandoni, I., Wang, L.
Feedback from low-excitation radio galaxies (LERGs) plays a key role in the lifecycle of massive galaxies in the local Universe; their evolution, and the impact of these active galactic nuclei on early galaxy evolution, however, remain poorly underst
Externí odkaz:
http://arxiv.org/abs/2204.07588
Autor:
Di Nicola, JM., Suratwala, T., Pelz, L., Heebner, J., Aden, R., Alessi, D., Amula, S., Barnes, A., Bhasker, A., Bond, T., Bude, J., Buckley, B., Browning, D., Cabral, J., CalonicoSoto, A., Carr, W., Chang, L., Chou, J., Cohen, S., Cope, T., Cross, D., Deveno, R., DeVore, P., Deland, A., Nicola, P. Di, Dumbacher, T., Erbert, G., Erickson, M., Erlandson, A., Filip, C., Fratanduono, D., Gottesman, N., Gowda, A., Handler, A., Hernandez, V.J., Herriot, S., Horner, J., House, R., Kalantar, D., Kegelmeyer, L., Kinsella, C., Lanier, T., Larson, D., Galloudec, B. Le, Lusk, J., MacGowan, B., McLaren, S., Manes, K., McCandless, K., Mennerat, G., Miller, C., Monticelli, M., Muir, R., Negres, R., Nelson, J., Nostrand, M., Ordoñez, M., Orth, C., Padilla, E., Pao, A., Penner, J., Petersen, T., Prantil, M., Raman, R., Rana, S., Raymond, B., Ruiz, N., Sacks, R., Schrauth, S., Shaw, M., Sommer, S., Siegel, L., Spaeth, M., Stolz, C., Tam, M.F., Tate, T., Trummer, S., VanBlarcom, D., Varadan, K., Vella, A., Wargo, A., Wang, L., Waxer, L., Wegner, P., Welday, B., Whitman, P., Widmayer, C., Williams, W., Wong, L., Wong, N., Van Wonterghem, B., Yang, S., Brunton, G.
Publikováno v:
In High Energy Density Physics September 2024 52
