Results 41 to 50 of about 357 (112)
A Geometric Approach to Estimate Background in Astronomical Images
The Astrophysical Journal Supplement SeriesEstimating the true background in an astronomical image is fundamental to detecting faint sources. In a typical low-photon-count astronomical image, such as in the far- and near-ultraviolet wavelength ranges, conventional methods relying on 3 σ clipping ...
Pushpak Pandey, Kanak Saha
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The Astrophysical Journal Supplement SeriesThe observing strategy (OS) of an astronomical survey influences the degree to which its resulting data can be used to accomplish any science goal, necessitating upcoming programs, including those on the Rubin and Roman telescopes, to solicit metrics in ...
Alex I. Malz +4 more
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Computational AstroStatistics: Fast and Efficient Tools for Analysing Huge Astronomical Data Sources [PDF]
, 2006 Invited talk at "Statistical Challenges in Modern Astronomy III" July 18-21 2001.
Nichol, R. C. +12 more
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Assessing Exoplanetary System Architectures with DYNAMITE Including Observational Upper Limits
The Astronomical JournalThe information gathered from observing planetary systems is not limited to the discovery of planets, but also includes the observational upper limits constraining the presence of any additional planets.
Jamie Dietrich
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Automatic Parallel Tempering Markov Chain Monte Carlo with Nii-C
The Astrophysical Journal Supplement SeriesDue to the high dimensionality or multimodality that is common in modern astronomy, sampling Bayesian posteriors can be challenging. Several publicly available codes based on different sampling algorithms can solve these complex models, but the execution
Sheng Jin, Wenxin Jiang, Dong-Hong Wu
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Auto-BUQ: Uncertainty Quantification for the Boundaries of Segmented Events
The Astronomical JournalWe present a new method to estimate the boundary of extended sources in high-energy photon lists and to quantify the uncertainty in the boundary. This method extends the graphed seeded region growing method developed by M. Fan et al.
Jue Wang +4 more
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Statistical Properties of a Polarization Vector’s Ellipticity Angle
The Astrophysical JournalThe orientation of a polarization vector on the Poincaré sphere is defined by its position angle (PA) and ellipticity angle (EA). The radio emission from pulsars, magnetars, and fast radio bursts can be elliptically polarized, and measurements of the EA ...
M. M. McKinnon
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The Astrophysical JournalSpace scientists often face the question of whether data collected by different instruments are measurements of the same source population. This paper proposes a statistical validation method for evaluating the agreement between such related data sets ...
Kelly R. Moran +6 more
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New Organizations to Support Astroinformatics and Astrostatistics
, 2013 In the past two years, the environment within which astronomers conduct their data analysis and management has rapidly changed. Working Groups associated with international societies and Big Data projects have emerged to support and stimulate the new fields of astroinformatics and astrostatistics.
Feigelson, Eric D. +3 more
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Quantification of High-dimensional Non-Gaussianities and Its Implication to Fisher Analysis in Cosmology. [PDF]
Astrophys J, 2023 Park CF +3 more
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