Results 21 to 30 of about 250,785 (226)
Cluster detection from surface-brightness fluctuations in SDSS data [PDF]
Astronomy & Astrophysics, 2002 7 pages, submitted to Astronomy & ...
Matthias Bartelmann, Simon D. M. White
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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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A synthesis of data from fundamental plane and surface brightness fluctuation surveys [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 We perform a series of comparisons between distance-independent photometric and spectroscopic properties used in the surface brightness fluctuations (SBF) and fundamental plane (FP) methods of early-type galaxy distance estimation. The data are taken from two recent surveys: the SBF Survey of Galaxy Distances and the Streaming Motions of Abell Clusters
John P. Blakeslee +4 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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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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Surface-brightness fluctuations in stellar populations [PDF]
Proceedings of the International Astronomical Union, 2006 Resumen en: A new theoretical calibration of surface-brightness fluctuations (SBF) for single age, single metallicity stellar populations is presented for the optic...
A. Aparicio, A. Marín-Franch
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Etherington duality breaking: gravitational lensing in non-metric spacetimes versus intrinsic alignments [PDF]
, 2022 The Etherington distance duality relation is well-established for metric theories of gravity, and confirms the duality between the luminosity distance and the angular diameter distance through the conservation of surface brightness. A violation of the Etherington distance duality due to lensing in a non-metric spacetime would lead to fluctuations in ...
arxiv +1 more source
Infrared Surface Brightness Fluctuations of Magellanic Star Clusters [PDF]
The Astrophysical Journal, 2004 We present surface brightness fluctuations (SBFs) in the near--IR for 191 Magellanic star clusters available in the Second Incremental and All Sky Data releases of the Two Micron All Sky Survey (2MASS), and compare them with SBFs of Fornax Cluster galaxies and with predictions from stellar population models. Our goals are twofold.
Michael C. Liu +2 more
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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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