Results 21 to 30 of about 1,066 (128)
A Statistical Search for a Uniform Trigger Threshold in Solar Flares from Individual Active Regions
The Astrophysical Journal, 2023 Solar flares result from the sudden release of energy deposited by subphotospheric motions into the magnetic field of the corona. The deposited energy accumulates secularly between events. One may interpret the observed event statistics as resulting from
Julian B. Carlin +2 more
doaj +1 more source
The Exoplanets Catalogues and Archives: An Astrostatistical Analysis
Communications of the Byurakan Astrophysical Observatory, 2022 The discovery of more than 5000 exoplanets based on several methods will improve our understanding of the formation and evolution of the exoplanets. Due to the dramatically increases in the amount of the astronomical data in recent decades. Which can be analyzed statistically to extract scientific information and test astrophysical theories.
A. A. Abushattal +2 more
openaire +1 more source
Intrinsic scatter of caustic masses and hydrostatic bias: An observational study [PDF]
, 2017 All estimates of cluster mass have some intrinsic scatter and perhaps some bias with true mass even in the absence of measurement errors for example caused by cluster triaxiality and large scale structure.
Andreon, S. +3 more
core +2 more sources
Fast Algorithms and Efficient Statistics: N-point Correlation Functions [PDF]
, 2000 We present here a new algorithm for the fast computation of N-point correlation functions in large astronomical data sets. The algorithm is based on kdtrees which are decorated with cached sufficient statistics thus allowing for orders of magnitude speed-
Alex Gray +11 more
core +4 more sources
Denoising Diffusion Probabilistic Models to Predict the Density of Molecular Clouds
The Astrophysical Journal, 2023 We introduce the state-of-the-art deep-learning denoising diffusion probabilistic model as a method to infer the volume or number density of giant molecular clouds (GMCs) from projected mass surface density maps.
Duo Xu +3 more
doaj +1 more source
Genetic Algorithm Modeling with GPU Parallel Computing Technology [PDF]
, 2012 We present a multi-purpose genetic algorithm, designed and implemented with GPGPU / CUDA parallel computing technology. The model was derived from a multi-core CPU serial implementation, named GAME, already scientifically successfully tested and ...
Brescia, Massimo +5 more
core +2 more sources
Discerning Exoplanet Migration Models Using Spin-Orbit Measurements [PDF]
, 2010 We investigate the current sample of exoplanet spin-orbit measurements to determine whether a dominant planet migration channel can be identified, and at what confidence.
Chatterjee +24 more
core +2 more sources
Robust joint modelling of sparsely observed paired functional data
Canadian Journal of Statistics, Volume 52, Issue 3, Page 734-754, September 2024.Abstract A reduced‐rank mixed‐effects model is developed for robust modelling of sparsely observed paired functional data. In this model, the curves for each functional variable are summarized using a few functional principal components, and the association of the two functional variables is modelled through the association of the principal component ...
Huiya Zhou, Xiaomeng Yan, Lan Zhou
wiley +1 more source
Listening to stars: audio-inspired multimodal learning for star classification
Frontiers in Astronomy and Space SciencesStellar spectral classification plays a crucial role in understanding the intrinsic properties of stars, such as their temperature, composition, and luminosity.
Shengwen Zhang +3 more
doaj +1 more source
The Astrophysical Journal, 2023 Cosmological parameters encoding our understanding of the expansion history of the universe can be constrained by the accurate estimation of time delays arising in gravitationally lensed systems.
Antoine D. Meyer +3 more
doaj +1 more source