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• W1844847594 abstract "Upcoming high spectral resolution telescopes, particularly Astro-H, are expected to finally deliver firm quantitative constraints on turbulence in the intra-cluster medium (ICM). We develop a new spectral analysis technique which exploits not just the line width but the entire line shape, and show how the excellent spectral resolution of Astro-H can overcome its relatively poor spatial resolution in making detailed infer- ences about the velocity field. The spectrum is decomposed into distinct components, which can be quantitatively analyzed using Gaussian mixture models. For instance, bulk flows and sloshing produce components with offset means, while partial volume- filling turbulence from AGN or galaxy stirring leads to components with different widths. The offset between components allows us to measure gas bulk motions and separate them from small-scale turbulence, while component fractions and widths con- strain the emission weighted volume and turbulent energy density in each component. We apply mixture modeling to a series of analytic toy models as well as numerical simu- lations of clusters with cold fronts and AGN feedback respectively. From Markov Chain Monte Carlo and Fisher matrix estimates which include line blending and continuum contamination, we show that the mixture parameters can be accurately constrained with Astro-H spectra: at a sim 10% level when components differ significantly in width, and a sim 1% level when they differ significantly in mean value. We also study error scalings and use information criteria to determine when a mixture model is preferred. Mixture modeling of spectra is a powerful technique which is potentially applicable to other astrophysical scenarios." @default.
• W1844847594 created "2016-06-24" @default.
• W1844847594 creator A5067199828 @default.
• W1844847594 creator A5070113786 @default.
• W1844847594 date "2012-10-22" @default.
• W1844847594 modified "2023-09-27" @default.
• W1844847594 title "Probing gas motions in the intra-cluster medium: a mixture model approach" @default.
• W1844847594 cites W1771886474 @default.
• W1844847594 cites W1831692117 @default.
• W1844847594 cites W1914340432 @default.
• W1844847594 cites W1918787266 @default.
• W1844847594 cites W1946485059 @default.
• W1844847594 cites W1965843010 @default.
• W1844847594 cites W1971316219 @default.
• W1844847594 cites W1977457396 @default.
• W1844847594 cites W1982330083 @default.
• W1844847594 cites W1987319691 @default.
• W1844847594 cites W1989900581 @default.
• W1844847594 cites W1992883930 @default.
• W1844847594 cites W1994236395 @default.
• W1844847594 cites W1999075356 @default.
• W1844847594 cites W2003228933 @default.
• W1844847594 cites W2009121658 @default.
• W1844847594 cites W2012032378 @default.
• W1844847594 cites W2017612006 @default.
• W1844847594 cites W2027190300 @default.
• W1844847594 cites W2027929086 @default.
• W1844847594 cites W2035756456 @default.
• W1844847594 cites W2039997515 @default.
• W1844847594 cites W2045377202 @default.
• W1844847594 cites W2047170523 @default.
• W1844847594 cites W2054075265 @default.
• W1844847594 cites W2057116658 @default.
• W1844847594 cites W2059655765 @default.
• W1844847594 cites W2060825586 @default.
• W1844847594 cites W2061603059 @default.
• W1844847594 cites W2071808000 @default.
• W1844847594 cites W2072386135 @default.
• W1844847594 cites W2081091143 @default.
• W1844847594 cites W2082236288 @default.
• W1844847594 cites W2091524256 @default.
• W1844847594 cites W2098340246 @default.
• W1844847594 cites W2099782510 @default.
• W1844847594 cites W2102217512 @default.
• W1844847594 cites W2107473305 @default.
• W1844847594 cites W2119781419 @default.
• W1844847594 cites W2130223977 @default.
• W1844847594 cites W2133030092 @default.
• W1844847594 cites W2134304928 @default.
• W1844847594 cites W2136239043 @default.
• W1844847594 cites W2137392515 @default.
• W1844847594 cites W2140107956 @default.
• W1844847594 cites W2141770651 @default.
• W1844847594 cites W2142211919 @default.
• W1844847594 cites W2142635246 @default.
• W1844847594 cites W2146191098 @default.
• W1844847594 cites W2147875900 @default.
• W1844847594 cites W2149522904 @default.
• W1844847594 cites W2150479035 @default.
• W1844847594 cites W2152064438 @default.
• W1844847594 cites W2154251857 @default.
• W1844847594 cites W2158626814 @default.
• W1844847594 cites W2166302968 @default.
• W1844847594 cites W2166504775 @default.
• W1844847594 cites W2167543341 @default.
• W1844847594 cites W2168175751 @default.
• W1844847594 cites W2169717511 @default.
• W1844847594 cites W2597020859 @default.
• W1844847594 cites W2949979621 @default.
• W1844847594 cites W3098023613 @default.
• W1844847594 cites W3098384627 @default.
• W1844847594 cites W3098398484 @default.
• W1844847594 cites W3098720345 @default.
• W1844847594 cites W3099152727 @default.
• W1844847594 cites W3099801582 @default.
• W1844847594 cites W3099822008 @default.
• W1844847594 cites W3100662972 @default.
• W1844847594 cites W3102051593 @default.
• W1844847594 cites W3102220422 @default.
• W1844847594 cites W3102638666 @default.
• W1844847594 cites W3103470264 @default.
• W1844847594 cites W3103513985 @default.
• W1844847594 cites W3104030356 @default.
• W1844847594 cites W3104173286 @default.
• W1844847594 cites W3105503549 @default.
• W1844847594 cites W3105774697 @default.
• W1844847594 cites W3106156334 @default.
• W1844847594 cites W3106192069 @default.
• W1844847594 cites W3106530008 @default.
• W1844847594 cites W3122783101 @default.
• W1844847594 cites W3123212448 @default.
• W1844847594 cites W3125551346 @default.
• W1844847594 cites W4296765286 @default.
• W1844847594 cites W4297572496 @default.
• W1844847594 doi "https://doi.org/10.1111/j.1365-2966.2012.21897.x" @default.
• W1844847594 hasPublicationYear "2012" @default.
• W1844847594 type Work @default.
• W1844847594 sameAs 1844847594 @default.

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