Zobrazeno 1 - 10
of 642
pro vyhledávání: '"Lansbury P"'
Autor:
Boorman, Peter G., Gandhi, Poshak, Buchner, Johannes, Stern, Daniel, Ricci, Claudio, Baloković, Mislav, Asmus, Daniel, Harrison, Fiona A., Svoboda, Jiří, Greenwell, Claire, Koss, Michael, Alexander, David M., Annuar, Adlyka, Bauer, Franz, Brandt, William N., Brightman, Murray, Panessa, Francesca, Chen, Chien-Ting J., Farrah, Duncan, Forster, Karl, Grefenstette, Brian, Hönig, Sebastian F., Hill, Adam B., Kammoun, Elias, Lansbury, George, Lanz, Lauranne, LaMassa, Stephanie, Madsen, Kristin, Marchesi, Stefano, Middleton, Matthew, Mingo, Beatriz, Parker, Michael L., Treister, Ezequiel, Ueda, Yoshihiro, Urry, C. Megan, Zappacosta, Luca
Hard X-ray-selected samples of Active Galactic Nuclei (AGN) provide one of the cleanest views of supermassive black hole accretion, but are biased against objects obscured by Compton-thick gas column densities of $N_{\rm H}$ $>$ 10$^{24}$ cm$^{-2}$.
Externí odkaz:
http://arxiv.org/abs/2410.07339
Autor:
Greenwell, Claire L., Klindt, Lizelke, Lansbury, George B., Rosario, David J., Alexander, David M., Aird, James, Stern, Daniel, Forster, Karl, Koss, Michael J., Bauer, Franz E., Ricci, Claudio, Tomsick, John, Brandt, William N., Connor, Thomas, Boorman, Peter G., Annuar, Adlyka, Ballantyne, David R., Chen, Chien-Ting, Civano, Francesca, Comastri, Andrea, Fawcett, Victoria A., Fornasini, Francesca M., Gandhi, Poshak, Harrison, Fiona, Heida, Marianne, Hickox, Ryan, Kammoun, Elias S., Lanz, Lauranne, Marchesi, Stefano, Noirot, Gaël, Romero-Colmenero, Encarni, Treister, Ezequiel, Urry, C. Megan, Väisänen, Petri, van Soelen, Brian
We present a catalog of hard X-ray serendipitous sources detected in the first 80 months of observations by the Nuclear Spectroscopic Telescope Array (NuSTAR). The NuSTAR serendipitous survey 80-month (NSS80) catalog has an unprecedented $\sim$ 62 Ms
Externí odkaz:
http://arxiv.org/abs/2404.17637
Autor:
Greenwell, Claire, Gandhi, Poshak, Stern, Daniel, Lansbury, George, Mainieri, Vincenzo, Boorman, Peter, Toba, Yoshiki
The growth of active galactic nuclei (AGN) occurs under some form of obscuration in a large fraction of the population. The difficulty in constraining this population leads to high uncertainties in cosmic X-ray background and galaxy evolution models.
Externí odkaz:
http://arxiv.org/abs/2401.01937
Autor:
Paul Memmott, Nina Lansbury, Daphne Nash, Stephen Snow, Andrew M. Redmond, Clarissa Burgen (Waanyi), Paul Matthew, Simon Quilty, Patricia Narrurlu Frank (Warumungu)
Publikováno v:
Architecture, Vol 4, Iss 3, Pp 778-801 (2024)
Architecture can be very influential in enabling health and wellbeing in the residential built environment. In arid regions, health-supportive design would consider major environmental hazards, such as heat and dust, as well as social and cultural fa
Externí odkaz:
https://doaj.org/article/b10014fe54e748aa9638244f26f73602
Autor:
LaMassa, Stephanie M., Yaqoob, Tahir, Tzanavaris, Panayiotis, Gandhi, Poshak, Heckman, Timothy, Lansbury, George, Siemiginowska, Aneta
3C 223 is a radio loud, Type 2 quasar at $z=0.1365$ with an intriguing XMM-Newton spectrum that implicated it as a rare, Compton-thick ($N_{\rm H} \gtrsim 1.25 \times 10^{24}$ cm$^{-2}$) active galactic nucleus (AGN). We obtained contemporaneous XMM-
Externí odkaz:
http://arxiv.org/abs/2301.07193
Autor:
Gloudemans, A. J., Duncan, K. J., Saxena, A., Harikane, Y., Hill, G. J., Zeimann, G. R., Rottgering, H. J. A., Yang, D., Best, P. N., Banados, E., Drabent, A., Hardcastle, M. J., Hennawi, J. F., Lansbury, G., Magliocchetti, M., Miley, G. K., Nanni, R., Shimwell, T. W., Smith, D. J. B., Venemans, B. P., Wagenveld, J. D.
High redshift quasars ($z>5$) that also shine brightly at radio wavelengths are unique signposts of supermassive black hole activity in the early universe. However, bright radio sources at $z\ge5$ are extremely rare and therefore we have started a ca
Externí odkaz:
http://arxiv.org/abs/2210.01811
Autor:
Ansh, Shrey., Chen, Chien-Ting J., Brandt, W. N., Hood, Carol E., Kammoun, E. S., Lansbury, G., Paltani, Stéphane, Reines, Amy E., Ricci, C., Swartz, Douglas A., Trump, Jonathan R., Vito, F., Hickox, Ryan C.
We present a multi-wavelength analysis of the dwarf Seyfert-2 galaxy J$144013+024744$, a candidate obscured active galactic nucleus (AGN) thought to be powered by an intermediate-mass black hole (IMBH, $M_\bullet \approx 10^{4-6} M_\odot$) of mass $M
Externí odkaz:
http://arxiv.org/abs/2209.09913
Autor:
Greenwell, Claire, Gandhi, Poshak, Lansbury, George, Boorman, Peter, Mainieri, Vincenzo, Stern, Daniel
Optically quiescent quasars (OQQs) represent a recently systematised class of infrared-luminous active galactic nuclei (AGN) which have galaxy-like optical continua. They may represent an interesting, brief phase in the AGN life cycle, e.g. either co
Externí odkaz:
http://arxiv.org/abs/2208.01627
Autor:
Girdhar, A., Harrison, C. M., Mainieri, V., Bittner, A., Costa, T., Kharb, P., Mukherjee, D., Battaia, F. Arrigoni, Alexander, D. M., Rivera, G. Calistro, Circosta, C., De Breuck, C., Edge, A. C., Farina, E. P., Kakkad, D., Lansbury, G. B., Molyneux, S. J., Mullaney, J. R., S., Silpa, Thomson, A. P., Ward, S. R.
We present a study of a luminous, z=0.15, type-2 quasar (log [L([OIII])/(erg/s)]=42.8) from the Quasar Feedback Survey. It is classified as 'radio-quiet' (log [L(1.4 GHz)/(W/Hz)]=23.8); however, radio imaging reveals ~1 kpc low-power jets (log [Pjet/
Externí odkaz:
http://arxiv.org/abs/2201.02208
Autor:
Holoien, Thomas W. -S., Neustadt, Jack M. M., Vallely, Patrick J., Auchettl, Katie, Hinkle, Jason T., Romero-Cañizales, Cristina, Shappee, Benjamin J., Kochanek, Christopher S., Stanek, K. Z., Chen, Ping, Dong, Subo, Prieto, Jose L., Thompson, Todd A., Brink, Thomas G., Filippenko, Alexei V., Zheng, WeiKang, Bersier, David, Bose, Subhash, Burgasser, Adam J., Channa, Sanyum, de Jaeger, Thomas, Hestenes, Julia, Im, Myungshin, Jeffers, Benjamin, Jun, Hyunsung D., Lansbury, George, Post, Richard S., Ross, Timothy W., Stern, Daniel, Tang, Kevin, Tucker, Michael A., Valenti, Stefano, Yunus, Sameen, Zhang, Keto D.
We present observations of the extremely luminous but ambiguous nuclear transient (ANT) ASASSN-17jz, spanning roughly 1200 days of the object's evolution. ASASSN-17jz was discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN) in the gala
Externí odkaz:
http://arxiv.org/abs/2109.07480