Zobrazeno 1 - 10
of 2 284
pro vyhledávání: '"Walker, Stephen A"'
Existing approaches to model uncertainty typically either compare models using a quantitative model selection criterion or evaluate posterior model probabilities having set a prior. In this paper, we propose an alternative strategy which views missin
Externí odkaz:
http://arxiv.org/abs/2410.17108
We present our findings from the new deep Chandra observations ($256$ ks) of the merging galaxy cluster SPT-CL J2031-4037 at $z = 0.34$. Our observations reveal intricate structures seen in a major merger akin to the Bullet Cluster. The X-ray data co
Externí odkaz:
http://arxiv.org/abs/2406.19264
Autor:
Bagchi, Joydeep, Ray, Shankar, Dhiwar, Suraj, Dabhade, Pratik, Barth, Aaron, Ho, Luis C., Mirakhor, Mohammad S., Walker, Stephen A., Nesvadba, Nicole, Combes, Francoise, Fabian, Andrew, Jacob, Joe
This study delves into the bulge-disc components and stellar mass distribution in the fast-rotating, highly massive spiral galaxy 2MASX~J23453268-0449256, distinguished by extraordinary radio jets extending to Mpc scales. Using high-resolution multi-
Externí odkaz:
http://arxiv.org/abs/2405.01910
Autor:
Creech, Samantha, Wik, Daniel R., Rossland, Steven, Tümer, Ayşegül, Wong, Ka-Wah, Walker, Stephen A.
As the brightest galaxy cluster in the X-ray sky, Perseus is an excellent target for studying the Intracluster Medium (ICM), but until recently, its active galactic nucleus (AGN) made studies of the diffuse emission near its center nearly impossible
Externí odkaz:
http://arxiv.org/abs/2401.16616
Autor:
Cui, Fuheng, Walker, Stephen G.
The family of log-concave density functions contains various kinds of common probability distributions. Due to the shape restriction, it is possible to find the nonparametric estimate of the density, for example, the nonparametric maximum likelihood
Externí odkaz:
http://arxiv.org/abs/2401.14515
Autor:
Walker, Stephen P.
Publikováno v:
Accounting, Auditing & Accountability Journal, 2023, Vol. 37, Issue 7/8, pp. 1820-1846.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/AAAJ-01-2023-6245
Autor:
Reynolds, Christopher S., Kara, Erin A., Mushotzky, Richard F., Ptak, Andrew, Koss, Michael J., Williams, Brian J., Allen, Steven W., Bauer, Franz E., Bautz, Marshall, Bodaghee, Arash, Burdge, Kevin B., Cappelluti, Nico, Cenko, Brad, Chartas, George, Chan, Kai-Wing, Corrales, Lía, Daylan, Tansu, Falcone, Abraham D., Foord, Adi, Grant, Catherine E., Habouzit, Mélanie, Haggard, Daryl, Herrmann, Sven, Hodges-Kluck, Edmund, Kargaltsev, Oleg, King, George W., Kounkel, Marina, Lopez, Laura A., Marchesi, Stefano, McDonald, Michael, Meyer, Eileen, Miller, Eric D., Nynka, Melania, Okajima, Takashi, Pacucci, Fabio, Russell, Helen R., Safi-Harb, Samar, Stassun, Keivan G., Falcão, Anna Trindade, Walker, Stephen A., Wilms, Joern, Yukita, Mihoko, Zhang, William W.
The Advanced X-ray Imaging Satellite (AXIS) is a Probe-class concept that will build on the legacy of the Chandra X-ray Observatory by providing low-background, arcsecond-resolution imaging in the 0.3-10 keV band across a 450 arcminute$^2$ field of v
Externí odkaz:
http://arxiv.org/abs/2311.00780
Autor:
Bellomi, Elena, ZuHone, John, Weinberger, Rainer, Walker, Stephen, Zhuravleva, Irina, Ruszkowski, Mateusz, Markevitch, Maxim
The intracluster medium of the Perseus Cluster exhibits spiral-shaped X-ray surface brightness discontinuities known as ``cold fronts'', which simulations indicate are caused by the sloshing motion of the gas after the passage of a subcluster. Recent
Externí odkaz:
http://arxiv.org/abs/2310.09422
Autor:
Mernier, François, Su, Yuanyuan, Markevitch, Maxim, Zhang, Congyao, Simionescu, Aurora, Rasia, Elena, Lin, Sheng-Chieh, Zhuravleva, Irina, Sarkar, Arnab, Kraft, Ralph P., Ogorzalek, Anna, Ayromlou, Mohammadreza, Forman, William R., Jones, Christine, Bregman, Joel N., Ettori, Stefano, Dolag, Klaus, Biffi, Veronica, Churazov, Eugene, Sun, Ming, ZuHone, John, Bogdán, Ákos, Khabibullin, Ildar I., Werner, Norbert, Truong, Nhut, Chakraborty, Priyanka, Walker, Stephen A., Vogelsberger, Mark, Pillepich, Annalisa, Mirakhor, Mohammad S.
Synthesized in the cores of stars and supernovae, most metals disperse over cosmic scales and are ultimately deposited well outside the gravitational potential of their host galaxies. Since their presence is well visible through their X-ray emission
Externí odkaz:
http://arxiv.org/abs/2310.04499
Autor:
Zhang, Congyao, Zhuravleva, Irina, Markevitch, Maxim, ZuHone, John, Mernier, François, Biffi, Veronica, Bogdán, Ákos, Chakraborty, Priyanka, Churazov, Eugene, Dolag, Klaus, Ettori, Stefano, Forman, William R., Jones, Christine, Khabibullin, Ildar, Kilbourne, Caroline, Kraft, Ralph, Lau, Erwin T., Lin, Sheng-Chieh, Nagai, Daisuke, Nelson, Dylan, Ogorzałek, Anna, Rasia, Elena, Sarkar, Arnab, Simionescu, Aurora, Su, Yuanyuan, Vogelsberger, Mark, Walker, Stephen
High-resolution spectroscopy in soft X-rays will open a new window to map multiphase gas in galaxy clusters and probe physics of the intracluster medium (ICM), including chemical enrichment histories, circulation of matter and energy during large-sca
Externí odkaz:
http://arxiv.org/abs/2310.02225