Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Duncan, K. J."'
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.
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f6edf3f785749be5b59dca2069b8b10
Autor:
Gloudemans, A. J., Duncan, K. J., Saxena, A., Harikane, Y., Hill, G. J., Zeimann, G. R., Rottgering, H. J. A., Yang, D., Best, P. N., Banados, E., Drabent, A., Hardcastle, M. J., Hennawi, J. F., Lansbury, G., Magliocchetti, M., Miley, G. K., Nanni, R., Shimwell, T. W., Smith, D. J. B., Venemans, B. P., Wagenveld, J. D.
Publikováno v:
Gloudemans, A J, Duncan, K J, Saxena, A, Harikane, Y, Hill, G J, Zeimann, G R, Rottgering, H J A, Yang, D, Best, P N, Banados, E, Drabent, A, Hardcastle, M J, Hennawi, J F, Lansbury, G, Magliocchetti, M, Miley, G K, Nanni, R, Shimwell, T W, Smith, D J B, Venemans, B P & Wagenveld, J D 2022, ' Discovery of 24 radio-bright quasars at 4.9≤z≤6.6 using low-frequency radio observations ', Astronomy and Astrophysics, vol. 668, A27, pp. 1-19 . https://doi.org/10.1051/0004-6361/202244763
Astronomy & Astrophysics, 668:A27
Astronomy & Astrophysics, 668:A27
High redshift quasars ($z>5$) that also shine brightly at radio wavelengths are unique signposts of supermassive black hole activity in the early universe. However, bright radio sources at $z\ge5$ are extremely rare and therefore we have started a ca
Autor:
Gloudemans, A. J., Duncan, K. J., R��ttgering, H. J. A., Shimwell, T. W., Venemans, B. P., Best, P. N., Br��ggen, M., Rivera, G. Calistro, Drabent, A., Hardcastle, M. J., Miley, G. K., Schwarz, D. J., Saxena, A., Smith, D. J. B., Williams, W. L.
Optically luminous quasars at $z > 5$ are important probes of super-massive black hole (SMBH) formation. With new and future radio facilities, the discovery of the brightest low-frequency radio sources in this epoch would be an important new probe of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a0c19efe8f31da8081f325996cdd03f
Autor:
Kondapally, R., Best, P. N., Hardcastle, M. J., Nisbet, D., Bonato, M., Sabater, J., Duncan, K. J., McCheyne, I., Cochrane, R. K., Bowler, R. A. A., Williams, W. L., Shimwell, T. W., Tasse, C., Croston, J. H., Goyal, A., Jamrozy, M., Jarvis, M. J., Mahatma, V. H., Röttgering, H. J. A., Smith, D. J. B., Wołowska, A., Bondi, M., Brienza, M., Brown, M. J. I., Brüggen, M., Chambers, K., Garrett, M. A., Gürkan, G., Huber, M., Kunert-Bajraszewska, M., Magnier, E., Mingo, B., Mostert, R., Nikiel-Wroczyński, B., O’Sullivan, S. P., Paladino, R., Ploeckinger, T., Prandoni, I., Rosenthal, M. J., Schwarz, D. J., Shulevski, A., Wagenveld, J. D., Wang, L.
We present the source associations, cross-identifications, and multi-wavelength properties of the faint radio source population detected in the deep tier of the LOFAR Two Metre Sky Survey (LoTSS): the LoTSS Deep Fields. The first LoTSS Deep Fields da
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::288ebf60a79c0c566ce95d76253b1608
http://oro.open.ac.uk/76117/1/aa38813-20.pdf
http://oro.open.ac.uk/76117/1/aa38813-20.pdf
Autor:
Gloudemans, A. J., Duncan, K. J., Kondapally, R., Sabater, J., Cochrane, R. K., R��ttgering, H. J. A., Best, P. N., Bonato, M., Bondi, M., Malek, K., McCheyne, I., Smith, D. J. B., Prandoni, I., Wang, L.
Lyman alpha emitters (LAEs) in the Epoch of Reionization (EoR) offer valuable probes of early galaxy evolution and the process of reionization; however, the exact evolution of their abundance and the nature of their emission remain open questions. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab4f1dba0f8a3b6b9b813ea65d57db45
Autor:
Masini, A., Hickox, R. C., Carroll, C. M., Aird, J., Alexander, D. M., Assef, R. J., Bower, R., Brodwin, M., Brown, M. J. I., Chatterjee, S., Chen, C. -T. J., Dey, A., DiPompeo, M. A., Duncan, K. J., Eisenhardt, P. R. M., Forman, W. R., Gonzalez, A. H., Goulding, A. D., Hainline, K. N., Jannuzi, B. T., Jones, C., Kochanek, C. S., Kraft, R., Lee, K. -S., Miller, E. D., Mullaney, J., Myers, A. D., Ptak, A., Stanford, A., Stern, D., Vikhlinin, A., Wake, D. A., Murray, S. S.
We present a new, ambitious survey performed with the Chandra X-ray Observatory of the 9.3 deg$^2$ Bo��tes field of the NOAO Deep Wide-Field Survey. The wide field probes a statistically representative volume of the Universe at high redshift. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a20f645067643fd7274a04671177be2e
Autor:
Dabhade, P., Rottgering, H. J. A., Bagchi, J., Shimwell, T. W., Hardcastle, M. J., Sankhyayan, S., Morganti, R., Jamrozy, M., Shulevski, A., Duncan, K. J.
Giant radio galaxies (GRGs) are a subclass of radio galaxies which have grown to megaparsec scales. GRGs are much rarer than normal sized radio galaxies (< 0.7 Mpc) and the reason for their gigantic sizes is still debated. Here, we report the biggest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d06dbc11f11ffbc218ef6e33c69990bb
http://arxiv.org/abs/1904.00409
http://arxiv.org/abs/1904.00409
Autor:
Hardcastle, M. J., Williams, W. L., Best, P. N., Croston, J. H., Duncan, K. J., Rottgering, H. J. A., Sabater, J., Shimwell, T. W., Tasse, C., Callingham, J. R., Cochrane, R. K., Gasperin, F. de, Gurkan, G., Jarvis, M. J., Mahatma, V., Miley, G. K., Mingo, B., Mooney, S., Morabito, L. K., O'Sullivan, S. P., Prandoni, I., Shulevski, A., Smith, D. J. B.
Publikováno v:
Hardcastle, M J, Williams, W L, Best, P N, Croston, J H, Duncan, K J, Rottgering, H J A, Sabater, J, Shimwell, T W, Tasse, C, Callingham, J R, Cochrane, R K, Gasperin, F D, Gurkan, G, Jarvis, M J, Mahatma, V, Miley, G K, Mingo, B, Mooney, S, Morabito, L K, O'Sullivan, S P, Prandoni, I, Shulevski, A & Smith, D J B 2019, ' Radio-loud AGN in the first LoTSS data release : The lifetimes and environmental impact of jet-driven sources ', Astronomy & Astrophysics . < https://www.aanda.org/component/solr/?task=results#!q=Radio-loud%20AGN%20in%20the%20first%20LoTSS%20data%20release%20The%20lifetimes%20and%20environmental%20impact%20of%20jet-driven%20sources&sort=relevance&rows=10 >
We constructed a sample of 23,344 radio-loud active galactic nuclei (RLAGN) from the catalogue derived from the LOFAR Two-Metre Sky Survey (LoTSS) survey of the HETDEX Spring field. Although separating AGN from star-forming galaxies remains challengi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3094::ee1b683f1a9f6f82a499b02ddffad122
https://www.pure.ed.ac.uk/ws/files/77278555/1811.07943.pdf
https://www.pure.ed.ac.uk/ws/files/77278555/1811.07943.pdf
Autor:
Williams, W. L., Hardcastle, M. J., Best, P. N., Sabater, J., Croston, J. H., Duncan, K. J., Shimwell, T. W., Röttgering, H. J. A., Nisbet, D., Gürkan, G., Alegre, L., Cochrane, R. K., Goyal, A., Hale, C. L., Jackson, N., Jamrozy, M., Kondapally, R., Kunert-Bajraszewska, M., Mahatma, V. H., Mingo, B., Morabito, L. K., Prandoni, I., Roskowinski, C., Shulevski, A., Smith, D. J. B., Tasse, C., Urquhart, S., Webster, B., White, G. J., Beswick, R. J., Callingham, J. R., Chyży, K. T., de Gasperin, F., Harwood, J. J., Hoeft, M., Iacobelli, M., McKean, J. P., Mechev, A. P., Miley, G. K., Schwarz, D. J., van Weeren, R. J.
The LOFAR Two-metre Sky Survey (LoTSS) is an ongoing sensitive, high-resolution 120-168 MHz survey of the Northern sky with diverse and ambitious science goals. Many of the scientific objectives of LoTSS rely upon, or are enhanced by, the association
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8eb0aed73c07a69171207c27ab23a61
Autor:
Williams, W. L., Rivera, G. Calistro, Best, P. N., Hardcastle, M. J., R��ttgering, H. J. A., Duncan, K. J., de Gasperin, F., Jarvis, M. J., Miley, G. K., Mahony, E. K., Morabito, L. K., Nisbet, D. M., Prandoni, I., Smith, D. J. B., Tasse, C., White, G. J.
This paper presents a study of the redshift evolution of radio-loud active galactic nuclei (AGN) as a function of the properties of their galaxy hosts in the Bo��tes field. To achieve this we match low-frequency radio sources from deep $150$-MHz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b92ce7d6a2ec84eb9effc27ea6ebb677