Zobrazeno 1 - 10
of 3 105
pro vyhledávání: '"O'Dea C"'
Autor:
Stanghellini, C., Orienti, M., Spingola, C., Zanichelli, A., Dallacasa, D., Cassaro, P., O'Dea, C. P., Baum, S. A., Pérez-Torres, M.
The long-standing question concerning Jetted Sub-Galactic Size (JSS) radio sources is whether they will evolve into large radio galaxies, die before escaping the host galaxy, or remain indefinitely confined to their compact size. Our main goal is to
Externí odkaz:
http://arxiv.org/abs/2407.02029
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:
Singha, M., Winkel, N., Vaddi, S., Pérez-Torres, M., Gaspari, M., Smirnova-Pinchukova, I., O'Dea, C. P., Combes, F., Omoruyi, O., Rose, T., McElroy, R., Husemann, B., Davis, T. A., Baum, S. A., Lawlor-Forsyth, C., Neumann, J., Tremblay, G. R.
We present a case study of HE 0040-1105, an unobscured radio-quiet AGN at a high accretion rate (Eddington ratio = 0.19+/-0.04). This particular AGN hosts an ionized gas outflow with the largest spatial offset from its nucleus compared to all other A
Externí odkaz:
http://arxiv.org/abs/2309.16926
Autor:
Boyce, M. M., Hopkins, A. M., Riggi, S., Rudnick, L., Ramsay, M., Hale, C. L., Marvil, J., Whiting, M., Venkataraman, P., O'Dea, C. P., Baum, S. A., Gordon, Y. A., Vantyghem, A. N., Dionyssiou, M., Andernach, H., Collier, J. D., English, J., Koribalski, B. S., Leahy, D., Michałowski, M. J., Safi-Harb, S., Vaccari, M., Alexander, E., Cowley, M., Kapinska, A. D., Robotham, A. S. G., Tang, H.
We present a comparison between the performance of a selection of source finders using a new software tool called Hydra. The companion paper, Paper~I, introduced the Hydra tool and demonstrated its performance using simulated data. Here we apply Hydr
Externí odkaz:
http://arxiv.org/abs/2304.14357
Autor:
Boyce, M. M., Hopkins, A. M., Riggi, S., Rudnick, L., Ramsay, M., Hale, C. L., Marvil, J., Whiting, M., Venkataraman, P., O'Dea, C. P., Baum, S. A., Gordon, Y. A., Vantyghem, A. N., Dionyssiou, M., Andernach, H., Collier, J. D., English, J., Koribalski, B. S., Leahy, D., Michałowski, M. J., Safi-Harb, S., Vaccari, M., Alexander, E., Cowley, M., Kapinska, A. D., Robotham, A. S. G., Tang, H.
The latest generation of radio surveys are now producing sky survey images containing many millions of radio sources. In this context it is highly desirable to understand the performance of radio image source finder (SF) software and to identify an a
Externí odkaz:
http://arxiv.org/abs/2304.14355
Autor:
Pierce, J. C. S., Tadhunter, C., Almeida, C. Ramos, Bessiere, P., Heaton, J. V., Ellison, S. L., Speranza, G., Gordon, Y., O'Dea, C., Grimmett, L., Makrygianni, L.
The triggering mechanism for the most luminous, quasar-like active galactic nuclei (AGN) remains a source of debate, with some studies favouring triggering via galaxy mergers, but others finding little evidence to support this mechanism. Here, we pre
Externí odkaz:
http://arxiv.org/abs/2303.15506
Autor:
Jimenez-Gallardo, A., Sani, E., Ricci, F., Mazzucchelli, C., Balmaverde, B., Massaro, F., Capetti, A., Forman, W. R., Kraft, R. P., Venturi, G., Gendron-Marsolais, M., Prieto, M. A., Marconi, A., Peña-Herazo, H. A., Baum, S. A., O'Dea, C. P., Lovisari, L., Gilli, R., Torresi, E., Paggi, A., Missaglia, V., Tremblay, G. R., Wilkes, B. J.
We present a multifrequency analysis of the radio galaxy 3CR 196.1 ($z = 0.198$), associated with the brightest galaxy of the cool core cluster CIZAJ0815.4-0303. This nearby radio galaxy shows a hybrid radio morphology and an X-ray cavity, all signat
Externí odkaz:
http://arxiv.org/abs/2211.04481
Autor:
Capetti, A., Balmaverde, B., Baldi, R. D., Baum, S., Chiaberge, M., Grandi, P., Marconi, A., O'Dea, C., Venturi, G.
Publikováno v:
A&A 671, A32 (2023)
This seventh paper of the MUse RAdio Loud Emission lines Snapshot (MURALES) project presents the results of the observations obtained with the VLT/MUSE integral field spectrograph of 3C radio sources and discusses the optical spectral properties of t
Externí odkaz:
http://arxiv.org/abs/2210.05407
Autor:
Rocha, G., Keskitalo, R., Partridge, B., Marscher, A., O'Dea, C., Pearson, T. J., Górski, K. M.
Publikováno v:
A&A 669, A92 (2023)
This paper introduces a new Planck Catalog of Polarized and Variable Compact Sources (PCCS-PV) comprising 153 sources, the majority of which are extragalactic. The data include both the total flux density and linear polarization measured by Planck wi
Externí odkaz:
http://arxiv.org/abs/2206.08480
Autor:
Winkel, N., Husemann, B., Davis, T. A., Smirnova-Pinchukova, I., Bennert, V. N., Combes, F., Gaspari, M., Jahnke, K., Neumann, J., O'Dea, C. P., Pérez-Torres, M., Singha, M., Tremblay, G. R., Rix, H. W.
Publikováno v:
A&A 663, A104 (2022)
The host galaxy conditions for rapid supermassive black hole growth are poorly understood. Narrow-line Seyfert 1 (NLS1) galaxies often exhibit high accretion rates and are hypothesized to be prototypes of active galactic nuclei (AGN) at an early stag
Externí odkaz:
http://arxiv.org/abs/2205.06271