Zobrazeno 1 - 10
of 1 744
pro vyhledávání: '"HARWOOD, J."'
Autor:
Kappes, A., Burd, P. R., Kadler, M., Ghisellini, G., Bonnassieux, E., Perucho, M., Brüggen, M., Cheung, C. C., Ciardi, B., Gallo, E., Haardt, F., Morabito, L. K., Sbarrato, T., Drabent, A., Harwood, J., Jackson, N., Moldon, J.
Publikováno v:
A&A 663, A44 (2022)
Studies of the most distant AGNs allow us to test our current understanding of the physics present in radio-jetted AGNs across a range of environments. The decrease in apparent luminosity with distance is the primary difficulty to overcome in the stu
Externí odkaz:
http://arxiv.org/abs/2205.11288
Autor:
Webster, B., Croston, J. H., Harwood, J. J., Baldi, R. D., Hardcastle, M. J., Mingo, B., Rottgering, H. J. A.
Previous studies have shown that physically small, low-luminosity radio galaxies, which we refer to as galaxy scale jets (GSJ), could potentially have a significant effect upon the host galaxy's evolution. Using 6 arcsec resolution images taken from
Externí odkaz:
http://arxiv.org/abs/2110.04018
Autor:
Jimenez-Gallardo, A., Massaro, F., Balmaverde, B., Paggi, A., Capetti, A., Forman, W. R., Kraft, R. P., Baldi, R. D., Mahatma, V. H., Mazzucchelli, C., Missaglia, V., Ricci, F., Venturi, G., Bam, S. A., Liuzzo, E., O'Dea, C. P., Prieto, M. A., Röttgering, H. J. A., Sani, E., Sparks, W. B., Tremblay, G. R., van Weeren, R. J., Wilkes, B. J., Harwood, J. J., Mazzotta, P., Kuraszkiewicz, J.
We present the analysis of X-ray and optical observations of gas filaments observed in the radio source 3CR 318.1, associated with NGC 5920, the Brightest Cluster Galaxy (BCG) of MKW 3s, a nearby cool core galaxy cluster. This work is one of the firs
Externí odkaz:
http://arxiv.org/abs/2104.07677
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
Autor:
Brienza, M., Morganti, R., Harwood, J., Duchet, T., Rajpurohit, K., Shulevski, A., Hardcastle, M. J., Mahatma, V., Godfrey, L. E. H., Prandoni, I., Shimwell, T. W., Intema, H.
Publikováno v:
A&A 638, A29 (2020)
Restarted radio galaxies represent a unique tool to investigate the duty cycle of the jet activity in Active Galactic Nuclei. Due to a sharp discontinuity of the GHz spectral index distribution within its lobes, the radio galaxy 3C388 has for long be
Externí odkaz:
http://arxiv.org/abs/2003.13476
Autor:
Shulevski, A., Barthel, P. D., Morganti, R., Harwood, J. J., Brienza, M., Shimwell, T. W., Röttgering, H. J. A., White, G. J., Callingham, J. R., Mooney, S., Rafferty, D. A.
Publikováno v:
A&A 628, A69 (2019)
We have examined the giant radio galaxy 3C~236 using LOFAR at 143 MHz down to an angular resolution of 7", in combination with observations at higher frequencies. We have used the low frequency data to derive spectral index maps with the highest reso
Externí odkaz:
http://arxiv.org/abs/1907.09060
Autor:
Clarke, A. O., Scaife, A. M. M., Shimwell, T., van Weeren, R. J., Bonafede, A., Heald, G., Brunetti, G., Cantwell, T. M., de Gasperin, F., Brüggen, M., Botteon, A., Hoeft, M., Horellou, C., Cassano, R., Harwood, J. J., Röttgering, H. J. A.
Publikováno v:
A&A 627, A176 (2019)
We present LOFAR data from 110--180~MHz of the merging galaxy cluster Abell 1682, alongside archival optical, radio and X-ray data. Our 6 arc-second resolution images at low frequencies reveal new structures associated with numerous radio galaxies in
Externí odkaz:
http://arxiv.org/abs/1906.07792
Autor:
Mahatma, V. H., Hardcastle, M. J., Williams, W. L., Best, P. N., Croston, J. H., Duncan, K., Mingo, B., Morganti, R., Brienza, M., Cochrane, R. K., Gürkan, G., Harwood, J. J., Jarvis, M. J., Jamrozy, M., Jurlin, N., Morabito, L. K., Röttgering, H. J. A., Sabater, J., Shimwell, T. W., Smith, D. J. B., Shulevski, A., Tasse, C.
Double-double radio galaxies (DDRGs) represent a short but unique phase in the life-cycle of some of the most powerful radio-loud active galactic nuclei (RLAGN). These galaxies display large-scale remnant radio plasma in the intergalactic medium left
Externí odkaz:
http://arxiv.org/abs/1811.08194
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
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.
Publikováno v:
A&A 622, A2 (2019)
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:
http://arxiv.org/abs/1811.07927