Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Galvin, T J"'
Autor:
Hurley-Walker, N., McSweeney, S. J., Bahramian, A., Rea, N., Horvath, C., Buchner, S., Williams, A., Meyers, B. W., Strader, Jay, Aydi, Elias, Urquhart, Ryan, Chomiuk, Laura, Galvin, T. J., Zelati, F. Coti, Bailes, Matthew
We present a long-period radio transient (GLEAM-X J0704-37) discovered to have an optical counterpart, consistent with a cool main sequence star of spectral type M3. The radio pulsations occur at the longest period yet found, 2.9 hours, and were disc
Externí odkaz:
http://arxiv.org/abs/2408.15757
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:
Ross, K., Hurley-Walker, N., Galvin, T. J., Venville, B., Duchesne, S. W., Morgan, J., An, T., Gurkan, G., Hancock, P. J., Heald, G., Johnston-Hollitt, M., White, S. V.
We present the second data release for the GaLactic and Extragalactic All-sky Murchison Widefield Array eXtended (GLEAM-X) survey. This data release is an area of 12,892-deg^2 around the South Galactic Pole region covering 20h 40m <= RA <= 6h 40m, -9
Externí odkaz:
http://arxiv.org/abs/2406.06921
Autor:
Vantyghem, A. N., Galvin, T. J., Sebastian, B., O'Dea, C. P., Gordon, Y. A., Boyce, M., Rudnick, L., Polsterer, K., Andernach, Heinz, Dionyssiou, M., Venkataraman, P., Norris, R., Baum, S. A., Wang, X. R., Huynh, M.
Modern wide field radio surveys typically detect millions of objects. Techniques based on machine learning are proving to be useful for classifying large numbers of objects. The self-organizing map (SOM) is an unsupervised machine learning algorithm
Externí odkaz:
http://arxiv.org/abs/2404.10109
Autor:
Lourenço, L., Chippendale, A. P., Indermuehle, B., Moss, V. A., Murphy, Tara, Galvin, T. J., Hellbourg, G., Hotan, A. W., Lenc, E., Whiting, M. T.
We present an initial analysis of Radio Frequency Interference (RFI) flagging statistics from archived Australian SKA Pathfinder (ASKAP) observations for the 'Survey and Monitoring of ASKAP's RFI environment and Trends' (SMART) project. The survey co
Externí odkaz:
http://arxiv.org/abs/2312.14422
Autor:
Anderson, G. E., Russell, T. D., Fausey, H. M., van der Horst, A. J., Hancock, P. J., Bahramian, A., Bell, M. E., Miller-Jones, J. C. A., Rowell, G., Sammons, M. W., Wijers, R. A. M. J., Galvin, T. J., Goodwin, A. J., Konno, R., Rowlinson, A., Ryder, S. D., Schussler, F., Wagner, S. J., Zhu, S. J.
We observed the rapid radio brightening of GRB 210702A with the Australian Telescope Compact Array (ATCA) just 11hr post-burst, tracking early-time radio variability over a 5hr period on ~15min timescales at 9.0, 16.7, and 21.2GHz. A broken power-law
Externí odkaz:
http://arxiv.org/abs/2211.11212
Autor:
Riseley, C. J., Bonnassieux, E., Vernstrom, T., Galvin, T. J., Chokshi, A., Botteon, A., Rajpurohit, K., Duchesne, S. W., Bonafede, A., Rudnick, L., Hoeft, M., Quici, B., Eckert, D., Brienza, M., Tasse, C., Carretti, E., Collier, J. D., Diego, J. M., Di Mascolo, L., Hopkins, A. M., Johnston-Hollitt, M., Keel, R. R., Koribalski, B. S., Reiprich, T. H.
Abell 3266 is a massive and complex merging galaxy cluster that exhibits significant substructure. We present new, highly sensitive radio continuum observations of Abell 3266 performed with the Australian Square Kilometre Array Pathfinder (0.8$-$1.1
Externí odkaz:
http://arxiv.org/abs/2208.00395
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:
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:
Ross, K., Hurley-Walker, N., Seymour, N., Callingham, J. R., Galvin, T. J., Johnston-Hollitt, M.
Characterising spectral variability of radio sources is a technique that offers the ability to determine the astrophysics of the intervening media, source structure, emission and absorption processes. We present broadband (0.072--10 GHz) spectral var
Externí odkaz:
http://arxiv.org/abs/2203.11466