Zobrazeno 1 - 10
of 6 893
pro vyhledávání: '"Greenwell, A."'
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
X-ray surveys provide the most efficient means for the detection of Active Galactic Nuclei (AGN). However, they face difficulties in detecting the most heavily obscured Compton-thick AGN. The BAT detector on board the Gehrels/Swift mission, operating
Externí odkaz:
http://arxiv.org/abs/2409.20015
Autor:
Guo, Wei-Jian, Zou, Hu, Greenwell, Claire L., Alexander, David M., Fawcett, Victoria A., Pan, Zhiwei, Siudek, Malgorzata, Aguilar, Jessica Nicole, Ahlen, Steven, Brooks, David, Claybaugh, Todd, Dawson, Kyle, De La Macorra, Axel, Doel, Peter, Font-Ribera, Andreu, Gaztanaga, Enrique, Gontcho, Satya Gontcho A, Gutierrez, Gaston, Kehoe, Robert, Kisner, Theodore, Landriau, Martin, Guillou, Laurent Le, Manera, Marc, Meisner, Aaron, Mique, Ramon, Moustakas, John, Prada, Francisco, Rossi, Graziano, Sanchez, Eusebio, Schubnell, Michael, Sprayberry, David, Sui, Jipeng, Tarle, Gregory, Weaver, Benjamin Alan, Xiao, Yun-Ao, Zou, Siwei
We present the identification of changing-look active galactic nuclei (CL-AGNs) from the Dark Energy Spectroscopic Instrument First Data Release and Sloan Digital Sky Survey Data Release 16 at z \leq 0.9. To confirm the CL-AGNs, we utilize spectral f
Externí odkaz:
http://arxiv.org/abs/2408.00402
Autor:
Crall, Jon, Greenwell, Connor, Joy, David, Leotta, Matthew, Chaudhary, Aashish, Hoogs, Anthony
Learning from multiple sensors is challenging due to spatio-temporal misalignment and differences in resolution and captured spectra. To that end, we introduce GeoWATCH, a flexible framework for training models on long sequences of satellite images s
Externí odkaz:
http://arxiv.org/abs/2407.06337
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
Interactions of hydrocarbons (HCs) and clay surfaces are responsible for fluid behaviour within shale reservoirs. These interactions are affected by the diversity of HC components and the variations in environmental conditions. This study examines th
Externí odkaz:
http://arxiv.org/abs/2402.01633
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
Compared to "black-box" models, like random forests and deep neural networks, explainable boosting machines (EBMs) are considered "glass-box" models that can be competitively accurate while also maintaining a higher degree of transparency and explain
Externí odkaz:
http://arxiv.org/abs/2311.07452
Autor:
Andonie, Carolina, Alexander, David M., Greenwell, Claire, Puglisi, Annagrazia, Laloux, Brivael, Alonso-Tetilla, Alba V., Rivera, Gabriela Calistro, Harrison, Chris, Hickox, Ryan C., Kaasinen, Melanie, Lapi, Andrea, López, Iván E., Petter, Grayson, Almeida, Cristina Ramos, Rosario, David J., Shankar, Francesco, Villforth, Carolin
In the standard quasar model, the accretion disk obscuration is due to the canonical dusty torus. Here, we argue that a substantial part of the quasar obscuration can come from the interstellar medium (ISM) when the quasars are embedded in compact st
Externí odkaz:
http://arxiv.org/abs/2310.02330
Publikováno v:
Birds, Vol 5, Iss 3, Pp 586-603 (2024)
Zoo enclosure design, and housing and husbandry protocols, will always be a compromise between what a species has evolved to do and what is possible to offer in a human-created environment. For some species, behaviours that are commonly performed in
Externí odkaz:
https://doaj.org/article/69269762579f423f9d56ce66f02f121f
