Results 11 to 20 of about 3,858 (229)
The Astrophysical Journal, 2023 The galaxy cluster Zwicky 3146 is a sloshing cool-core cluster at z = 0.291 that in Sunyaev–Zel’dovich (SZ) imaging does not appear to exhibit significant pressure substructure in the intracluster medium.
Charles E. Romero +18 more
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The Astrophysical Journal, 2023 We compare infrared surface brightness fluctuation (IR SBF) distances measured in galaxies that have hosted type Ia supernovae (SNe Ia) to distances estimated from SNe Ia light-curve fits.
Peter Garnavich +8 more
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A Dynamic Threshold Cloud Detecting Approach based on the Brightness Temperature from FY-2 VISSR Data [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015 The traditional statistical methods and radiation transfer theory methods for cloud detecting have a high adaptability just only in those areas with a uniform surface coverage and noncomplex terrain.
X. Daxiang +3 more
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Anomalous surface brightness fluctuations in NGC 4489 [PDF]
Astronomy & Astrophysics, 2001 Anomalously high K-band surface brightness fluctuations (SBF) have been reported in NGC 4489 by Pahre & Mould (1994), Jensen et al. (1996) and Jensen et al. (1998). However, these conclusions were uncertain because of relatively low signal-to-noise data. New high signal-to-noise data for NGC 4489 have been obtained at the NOAO/KPNO 2.1m and the ESO/
Mei, S., Silva, D. R., Quinn, P. J.
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ON THE NATURE OF X-RAY SURFACE BRIGHTNESS FLUCTUATIONS IN M87 [PDF]
The Astrophysical Journal, 2016 ABSTRACT X-ray images of galaxy clusters and gas-rich elliptical galaxies show a wealth of small-scale features that reflect fluctuations in density and/or temperature of the intracluster medium. In this paper we study these fluctuations in M87/Virgo to establish whether sound waves/shocks, bubbles, or uplifted cold gas dominate the ...
P. Arévalo +4 more
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矿业科学学报, 2023 When the surface strain field of concrete structure is measured by digital image correlation(DIC)technology under complex light conditions, the decorrelation effect of the pattern will be caused by the variation in light intensity.
Yang Denghui +5 more
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On surface brightness fluctuations: probabilistic and statistical bases [PDF]
Astronomy & Astrophysics, 2008 Aims. This work aims to provide a theoretical formulation of surface brightness fluctuations (SBF) in the framework of probabilistic population synthesis models that have no deterministic relations between the different stellar components of a population but only relations on average, and to distinguish between the different distributions involved in ...
M. Cerviño, V. Luridiana, L. Jamet
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Surface Brightness Fluctuations as Stellar Population Indicators [PDF]
AIP Conference Proceedings, 2009 8 pages, Invited review presented at "Probing Stellar Populations out to the Distant Universe," September 2008, Cefalu ...
John P. Blakeslee +7 more
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Power spectrum estimation methods on intracluster medium surface brightness fluctuations [PDF]
EPJ Web of ConferencesAccurate estimation of galaxy cluster masses is a central problem in cosmology. Turbulence is believed to introduce significant deviations from the hydrostatic mass estimates.
Bishop M. +3 more
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Distances from Surface Brightness Fluctuations [PDF]
, 1999 Invited review article to appear in: `Post-Hipparcos Cosmic Candles', A. Heck & F. Caputo (Eds), Kluwer Academic Publ., Dordrecht, in press.
Blakeslee, John P. +2 more
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