Zobrazeno 1 - 10
of 587
pro vyhledávání: '"BRODERICK, J. P."'
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:
Ighina, L., Caccianiga, A., Moretti, A., Broderick, J. W., Leung, J. K., López-Sánchez, A. R., Rigamonti, F., Seymour, N., An, T., Belladitta, S., Bisogni, S., Della Ceca, R., Drouart, G., Gargiulo, A., Liu, Y.
We present a multi-wavelength study on three new $z\sim5.6$ quasi stellar objects (QSOs) selected based on their radio and optical/near-infrared properties in publicly available surveys and then identified with dedicated spectroscopic observations. T
Externí odkaz:
http://arxiv.org/abs/2407.04094
Autor:
Ighina, L., Caccianiga, A., Moretti, A., Belladitta, S., Broderick, J. W., Drouart, G., Leung, J. K., Seymour, N.
We present the selection of high-redshift ($z\gtrsim5.7$) radio-loud (RL) quasi-stellar object (QSO) candidates from the combination of the radio Rapid ASKAP Continuum Survey (RACS; at 888 MHz) and the optical/near-infrared Dark Energy Survey (DES).
Externí odkaz:
http://arxiv.org/abs/2212.06168
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:
Sokolowski, M., Tingay, S. J., Davidson, D. B., Wayth, R. B., Ung, D., Broderick, J. W., Juswardy, B., Kovaleva, M., Macario, G., Pupillo, G., Sutinjo, A.
The SKA will be the largest radio astronomy observatory ever built, providing unprecedented sensitivity over a very broad frequency (50 MHz to 15.3 GHz). The SKA-Low (50 - 350 MHz), will be built at the MRO in Western Australia. It will consist of 51
Externí odkaz:
http://arxiv.org/abs/2204.05873
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:
Benthem, P., Wayth, R., Acedo, E. de Lera, Adami, K. Zarb, Alderighi, M., Belli, C., Bolli, P., Booler, T., Borg, J., Broderick, J. W., Chiarucci, S., Chiello, R., Ciani, L., Comoretto, G., Crosse, B., Davidson, D., DeMarco, A., Emrich, D., van Es, A., Fierro, D., Faulkner, A., Gerbers, M., Razavi-Ghods, N., Hall, P., Horsley, L., Juswardy, B., Kenney, D., Steele, K., Magro, A., Mattana, A., McKinley, B., Monari, J., Naldi, G., Nanni, J., Di Ninni, P., Paonessa, F., Perini, F., Poloni, M., Pupillo, G., Rusticelli, S., Schiaffino, M., Schillirò, F., Schnetler, H., Singuaroli, R., Sokolowski, M., Sutinjo, A., Tartarini, G., Ung, D., de Vaate, J. G. Bij, Virone, G., Walker, M., Waterson, M., Wijnholds, S. J., Williams, A.
Publikováno v:
A&A 655, A5 (2021)
The design and development process for the Square Kilometre Array (SKA) radio telescope, the Low Frequency Aperture Array component, was progressed during the SKA pre-construction phase by an international consortium, with the goal of meeting require
Externí odkaz:
http://arxiv.org/abs/2110.03217
Autor:
Gourdji, K., Rowlinson, A., Wijers, R. A. M. J., Broderick, J. W., Shulevski, A., Jonker, P. G.
The electromagnetic counterparts to gravitational wave (GW) merger events are highly sought after, but difficult to find owing to large localization regions. In this study, we present a strategy to search for compact object merger radio counterparts
Externí odkaz:
http://arxiv.org/abs/2105.07413
Autor:
Broderick, J. W., Russell, T. D., Fender, R. P., Trushkin, S. A., Green, D. A., Chauhan, J., Nizhelskij, N. A., Tsybulev, P. G., Bursov, N. N., Shevchenko, A. V., Pooley, G. G., Williams, D. R. A., Bright, J. S., Rowlinson, A., Corbel, S.
We present Low-Frequency Array (LOFAR) 143.5-MHz radio observations of flaring activity during 2019 May from the X-ray binary Cygnus X-3. Similar to radio observations of previous outbursts from Cygnus X-3, we find that this source was significantly
Externí odkaz:
http://arxiv.org/abs/2104.04540
Autor:
Sokolowski, M., Wayth, R. B., Bhat, N. D. R., Price, D., Broderick, J. W., Bernardi, G., Bolli, P., Chiello, R., Comoretto, G., Crosse, B., Davidson, D. B., Macario, G., Magro, A., Mattana, A., Minchin, D., McPhail, A., Monari, J., Perini, F., Pupillo, G., Sleap, G., Tingay, S., Ung, D., Williams, A.
We present the first southern-hemisphere all-sky imager and radio-transient monitoring system implemented on two prototype stations of the low-frequency component of the Square Kilometre Array. Since its deployment the system has been used for real-t
Externí odkaz:
http://arxiv.org/abs/2104.02940