Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Worrall, Diana M."'
Autor:
Duggal, Chetna, O'Dea, Christopher P., Baum, Stefi A., Labiano, Alvaro, Tadhunter, Clive, Worrall, Diana M., Morganti, Raffaella, Tremblay, Grant R., Dicken, Daniel
We present the first systematic search for UV signatures from radio source-driven AGN feedback in Compact Steep Spectrum (CSS) radio galaxies. Owing to their characteristic sub-galactic jets (1-20 kpc projected linear sizes), CSS hosts are excellent
Externí odkaz:
http://arxiv.org/abs/2309.00110
Autor:
Kuraszkiewicz, Joanna, Wilkes, Belinda J., Atanas, Adam, Buchner, Johannes, McDowell, Jonathan C., Willner, S. P., Ashby, Matthew L. N., Azadi, Mojegan, Barthel, Peter, Haas, Martin, Worrall, Diana M., Birkinshaw, Mark, Antonucci, Robert, Chini, Rolf, Fazio, Giovanni G., Lawrence, Charles, Ogle, Patrick
Low-frequency radio selection finds radio-bright galaxies regardless of the amount of obscuration by gas and dust. We report \chandra\ observations of a complete 178~MHz-selected, and so orientation unbiased, sample of 44 $0.5
Externí odkaz:
http://arxiv.org/abs/2104.13341
Autor:
Snios, Bradford, Schwartz, Daniel A., Siemiginowska, Aneta, Sobolewska, Małgosia, Birkinshaw, Mark, Cheung, C. C., Gobeille, Doug B., Marshall, Herman L., Migliori, Giulia, Wardle, John F. C., Worrall, Diana M.
We present Chandra X-ray observations of 14 radio-loud quasars at redshifts $3 < z < 4$, selected from a well-defined sample. All quasars are detected in the 0.5-7.0 keV energy band, and resolved X-ray features are detected in five of the objects at
Externí odkaz:
http://arxiv.org/abs/2102.12609
Autor:
Pan, Hsi-An, Lin, Lihwai, Hsieh, Bau-Ching, Michalowski, Michal J., Bothwell, Matthew S., Huang, Song, Moiseev, Alexei V., Oparin, Dmitry, O'Sullivan, Ewan, Worrall, Diana M., Sanchez, Sebastian F., Gwyn, Stephen, Law, David R., Stark, David V., Bizyaev, Dmitry, Li, Cheng, Lee, Chien-Hsiu, Fu, Hai, Belfiore, Francesco, Bundy, Kevin, Fernandez-Trincado, Jose G., Gelfand, Joseph, Peirani, Sebastien
Galaxies in dense environments, such as groups and clusters, experience various processes by which galaxies gain and lose gas. Using data from the SDSS-IV MaNGA survey, we previously reported the discovery of a giant (6 -- 8 kpc in diameter) H$\alpha
Externí odkaz:
http://arxiv.org/abs/2009.06656
Autor:
Snios, Bradford, Siemiginowska, Aneta, Sobolewska, Małgosia, Cheung, C. C., Kashyap, Vinay, Migliori, Giulia, Schwartz, Daniel A., Stawarz, Łukasz, Worrall, Diana M.
We present a comprehensive analysis of Chandra X-ray observations of 15 young radio quasars at redshifts $4.5 < z < 5.0$. All sources are detected in the $0.5-7.0$ keV energy band. Emission spectra are extracted, and the average photon index for the
Externí odkaz:
http://arxiv.org/abs/2007.01342
Autor:
Kolokythas, Konstantinos, O'Sullivan, Ewan, Giacintucci, Simona, Worrall, Diana M., Birkinshaw, Mark, Raychaudhury, Somak, Horellou, Cathy, Intema, Huib, Loubser, Ilani
We present results from GMRT and Chandra observations of the NGC 1550 galaxy group. Although previously thought of as relaxed, we show evidence that gas sloshing and active galactic nucleus (AGN) heating have affected the structure of the system. The
Externí odkaz:
http://arxiv.org/abs/2005.12950
Autor:
Liu, Wenhao, Sun, Ming, Nulsen, Paul E. J., Worrall, Diana M., Birkinshaw, Mark, Sarazin, Craig, Forman, William R., Jones, Christine, Ge, Chong
We present results from a deep (174 ks) Chandra observation of the FR-II radio galaxy 3C 220.1, the central brightest cluster galaxy (BCG) of a $kT \sim$ 4 keV cluster at $z=0.61$. The temperature of the hot cluster medium drops from $\sim5.9$ keV to
Externí odkaz:
http://arxiv.org/abs/2001.00506
Autor:
Snios, Bradford, Wykes, Sarka, Nulsen, Paul E. J., Kraft, Ralph P., Meyer, Eileen T., Birkinshaw, Mark, Worrall, Diana M., Hardcastle, Martin J., Roediger, Elke, Forman, William R., Jones, Christine
We report results from Chandra observations analyzed for evidence of variability and proper motion in the X-ray jet of Centaurus A. Using data spanning 15 years, collective proper motion of $11.3\pm3.3$ mas yr$^{-1}$, or $0.68\pm0.20c$, is detected f
Externí odkaz:
http://arxiv.org/abs/1901.00509
Autor:
Schwartz, Daniel A, Siemiginowska, Aneta, Worrall, Diana M, Birkinshaw, Mark, Cheung, Teddy, Marshall, Herman, Migliori, Guilia, Wardle, John, Gobeille, Doug
Powerful radio sources and quasars emit relativistic jets of plasma and magnetic fields that travel hundreds of kilo-parsecs, ultimately depositing energy into the intra- or inter-cluster medium. In the rest frame of the jet, the energy density of th
Externí odkaz:
http://arxiv.org/abs/1901.00057
Autor:
Wykes, Sarka, Snios, Bradford T., Nulsen, Paul E. J., Kraft, Ralph P., Birkinshaw, Mark, Hardcastle, Martin J., Worrall, Diana M., McDonald, Iain, Rejkuba, Marina, Jones, Thomas W., Stark, David J., Forman, William R., Meyer, Eileen T., Jones, Christine
We implement a steady, one-dimensional flow model for the X-ray jet of Centaurus A in which entrainment of stellar mass loss is the primary cause of dissipation. Using over 260 ks of new and archival Chandra/ACIS data, we have constrained the tempera
Externí odkaz:
http://arxiv.org/abs/1812.04587