Results 11 to 20 of about 49 (45)
21st Century Statistical and Computational Challenges in Astrophysics [PDF]
, 2021 International audienceModern astronomy has been rapidly increasing our ability to see deeper into the universe, acquiring enormous samples of cosmic populations.
Babu, Gutti Jogesh +3 more
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, 2023 Nested sampling (NS) computes parameter posterior distributions and makes Bayesian model comparison computationally feasible. Its strengths are the unsupervised navigation of complex, potentially multi-modal posteriors until a well-defined termination ...
Buchner, J., Buchner, Johannes
core +2 more sources
, 2016 International audienceThis chapter is devoted to two objectives. The first one is to answer the request expressed by attendees of the first Astrostatistics School (Annecy, October 2013) to be provided with an elementary vademecum of statistics that would
Grégoire, Gérard, G. Grégoire
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Recent advances in Bayesian inference in cosmology and astroparticle physics thanks to the multinest algorithm [PDF]
, 2013 We present a new algorithm, called MultiNest, which is a highly efficient alternative to traditional Markov Chain Monte Carlo (MCMC) sampling of posterior distributions.
Feroz, F +3 more
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Insights into the content and spatial distribution of dust from the integrated spectral properties of galaxies [PDF]
, 2013 JC and SC acknowledge the support of the European Commission through the Marie Curie Initial Training Network ELIXIR under contract PITN-GA-2008-214227.
V. Wild +8 more
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Euclid preparation: LXVIII. Extracting physical parameters from galaxies with machine learning [PDF]
Euclid Collaboration: I. Kovačić et al.The Euclid mission is generating a vast amount of imaging data in four broadband filters at a high angular resolution. This data will allow for the detailed study of mass, metallicity, and stellar populations across
Fosalba, Pablo +12 more
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Asteroid phase curves and phase coloring effect using the ATLAS survey data [PDF]
We determined phase curves for 301 272 asteroids in the orange filter and 280 953 in the cyan filter from the latest ATLAS Solar System Catalog V2 (SSCAT-2).
Bartczak, P. +5 more
core +1 more source
Imputation and estimation under nonignorable nonresponse for household surveys with missing covariate information [PDF]
, 2010 In this paper we develop and apply new methods for handling not missing at random (NMAR) nonresponse. We assume a model for the outcome variable under complete response and a model for the response probability, which is allowed to depend on the outcome ...
Pfeffermann, Danny, Sikov, Anna
core
The Astronomical JournalWide binary stars are important for testing alternative models of gravitation in the weak-field regime and understanding the statistical outcomes of dynamical interactions in the general Galactic field. The Gaia mission’s collection of weakly bound pairs
Valeri V. Makarov
doaj +1 more source
A Bias-corrected Luminosity Function for Red Supergiant Supernova Progenitor Stars
The Astrophysical Journal LettersThe apparent tension between the luminosity functions of red supergiant (RSG) stars and of RSG progenitors of Type II supernovae (SNe) is often referred to as the RSG problem and it motivated some to suggest that many RSGs end their life without an SN ...
Nora L. Strotjohann +2 more
doaj +1 more source