Zobrazeno 1 - 10
of 13 600
pro vyhledávání: '"Shabala, S"'
Autor:
Bordiu, C., Filipovic, M. D., Umana, G., Cotton, W. D., Buemi, C., Bufano, F., Camilo, F., Cavallaro, F., Cerrigone, L., Dai, S., Hopkins, A. M., Ingallinera, A., Jarrett, T., Koribalski, B., Lazarevic, S., Leto, P., Loru, S., Lundqvist, P., Mackey, J., Norris, R. P., Payne, J., Rowell, G., Riggi, S., Rizzo, J. R., Ruggeri, A. C., Shabala, S., Smeaton, Z. J., Trigilio, C., Velovic, V.
We present the serendipitous discovery of a new radio-continuum ring-like object nicknamed Kyklos (J1802-3353), with MeerKAT UHF and L-band observations. The radio ring, which resembles the recently discovered odd radio circles (ORCs), has a diameter
Externí odkaz:
http://arxiv.org/abs/2408.07727
Autor:
Broderick, J. W., Seymour, N., Drouart, G., Knight, D., Afonso, J. M., De Breuck, C., Galvin, T. J., Hedge, A. J., Lehnert, M. D., Noirot, G., Shabala, S. S., Turner, R. J., Vernet, J.
We present deep near-infrared $K_{\rm s}$-band imaging for 35 of the 53 sources from the high-redshift ($z > 2$) radio galaxy candidate sample defined in Broderick et al. (2022). These images were obtained using the High-Acuity Widefield $K$-band Ima
Externí odkaz:
http://arxiv.org/abs/2407.19145
Autor:
Böckmann, K., Brüggen, M., Koribalski, B., Veronica, A., Reiprich, T. H., Bulbul, E., Bahar, Y. E., Balzer, F., Comparat, J., Garrel, C., Ghirardini, V., Gürkan, G., Kluge, M., Leahy, D., Merloni, A., Liu, A., Ramos-Ceja, M. E., Salvato, M., Sanders, J., Shabala, S., Zhang, X.
Publikováno v:
A&A 677, A188 (2023)
The extended ROentgen Survey with an Imaging Telescope Array (eROSITA) telescope onboard the Spectrum-Roentgen-Gamma (SRG) mission has finished the first eROSITA All-Sky Survey (eRASS:1), and detected 10$^4$ galaxy clusters in the western Galactic he
Externí odkaz:
http://arxiv.org/abs/2307.13672
Autor:
Kondapally, R., Best, P. N., Raouf, M., Thomas, N. L., Davé, R., Shabala, S. S., Röttgering, H. J. A., Hardcastle, M. J., Bonato, M., Cochrane, R. K., Małek, K., Morabito, L. K., Prandoni, I., Smith, D. J. B.
Radio-mode feedback is a key ingredient in galaxy formation and evolution models, required to reproduce the observed properties of massive galaxies in the local Universe. We study the cosmic evolution of radio-AGN feedback out to $z\sim2.5$ using a s
Externí odkaz:
http://arxiv.org/abs/2306.11795
Autor:
Velović, Velibor, Filipović, M. D., Barnes, L., Norris, R. P., Tremblay, C. D., Heald, G., Rudnick, L., Shabala, S. S., Pannuti, T. G., Andernach, H., Titov, O., Waddell, S. G. H., Koribalski, B. S., Grupe, D., Jarrett, T., Alsaberi, R. Z. E., Carretti, E., Collier, J. D., Einecke, S., Galvin, T. J., Hotan, A., Manojlović, P., Marvil, J., Nandra, K., Reiprich, T. H., Rowell, G., Salvato, M., Whiting, M.
We present the discovery of highly-collimated radio jets spanning a total of 355 kpc around the nearby elliptical galaxy NGC 2663, and the possible first detection of recollimation on kiloparsec scales. The small distance to the galaxy (~28.5 Mpc) al
Externí odkaz:
http://arxiv.org/abs/2207.06713
Autor:
Quici, B., Turner, R. J., Seymour, N., Hurley-Walker, N., Shabala, S. S., Ishwara-Chandra, C. H.
Quantifying the energetics and lifetimes of remnant radio-loud active galactic nuclei (AGNs) is much more challenging than for active sources due to the added complexity of accurately determining the time since the central black hole switched off. In
Externí odkaz:
http://arxiv.org/abs/2205.02423
Autor:
Broderick, J. W., Drouart, G., Seymour, N., Galvin, T. J., Wright, N., Rosell, A. Carnero, Chhetri, R., Dannerbauer, H., Driver, S. P., Morgan, J. S., Moss, V. A., Prabu, S., Afonso, J. M., De Breuck, C., Emonts, B. H. C., Franzen, T. M. O., Gutiérrez, C. M., Hancock, P. J., Heald, G. H., Hurley-Walker, N., Ivison, R. J., Lehnert, M. D., Noirot, G., Read, M., Shabala, S. S., Stern, D., Sutherland, W. J., Sutorius, E., Turner, R. J., Vernet, J.
While unobscured and radio-quiet active galactic nuclei are regularly being found at redshifts $z > 6$, their obscured and radio-loud counterparts remain elusive. We build upon our successful pilot study, presenting a new sample of low-frequency-sele
Externí odkaz:
http://arxiv.org/abs/2204.08490
Autor:
Gürkan, Gülay, Prandoni, I., O'Brien, A., Raja, W., Marchetti, L., Vaccari, M., Driver, S., Taylor, E., Franzen, T., Brown, M. J. I., Shabala, S., Andernach, H., Hopkins, A. M., Norris, R. P., Leahy, D., Bilicki, M., Farajollahi, H., Galvin, T., Heald, G., Koribalski, B. S., An, T., Warhurst, K.
We present the Australian Square Kilometre Array Pathfinder (ASKAP) observations of the Galaxy and Mass Assembly (GAMA)-23h field. The survey was carried out at 887.5 MHz and covers a 83 square degree field. We imaged the calibrated visibility data,
Externí odkaz:
http://arxiv.org/abs/2203.14727
Autor:
Seymour, N., Drouart, G., Noirot, G., Broderick, J. W., Turner, R. J., Shabala, S. S., Stern, D. K., Bellstedt, S., Driver, S., Davies, L., De Breuck, C. A., Afonso, J., Vernet, J. D. R., Galvin, T. J.
We present Hubble Space Telescope Wide Field Camera 3 photometric and grism observations of the candidate ultra-high-redshift (z>7) radio galaxy, GLEAM J0917-0012. This radio source was selected due to the curvature in its 70-230 MHz, low-frequency M
Externí odkaz:
http://arxiv.org/abs/2203.01349
Autor:
Filipović, Miroslav D., Payne, J. L., Alsaberi, R. Z. E., Norris, R. P., Macgregor, P. J., Rudnick, L., Koribalski, B. S., Leahy, D., Ducci, L., Kothes, R., Andernach, H., Barnes, L., Bojičić, I. S., Bozzetto, L. M., Brose, R., Collier, J. D., Crawford, E. J., Crocker, R. M., Dai, S., Galvin, T. J., Haberl, F., Heber, U., Hill, T., Hopkins, A. M., Hurley-Walker, N., Ingallinera, A., Jarrett, T., Kavanagh, P. J., Lenc, E., Luken, K. J., Mackey, D., Manojlović, P., Maggi, P., Maitra, C., Pennock, C. M., Points, S., Riggi, S., Rowell, G., Safi-Harb, S., Sano, H., Sasaki, M., Shabala, S., Stevens, J., van Loon, J. Th., Tothill, N. F. H., Umana, G., Urošević, D., Velović, V., Vernstrom, T., West, J. L., Wan, Z.
We report the discovery of J0624-6948, a low-surface brightness radio ring, lying between the Galactic Plane and the Large Magellanic Cloud (LMC). It was first detected at 888 MHz with the Australian Square Kilometre Array Pathfinder (ASKAP), and wit
Externí odkaz:
http://arxiv.org/abs/2201.10026