Results 21 to 30 of about 443 (134)
Ponderings on the Possible Preponderance of Perpendicular Planets
The Astrophysical Journal Letters, 2023 Misalignments between planetary orbits and the equatorial planes of their host stars are clues about the formation and evolution of planetary systems. Earlier work found evidence for a peak near 90° in the distribution of stellar obliquities, based on ...
Jared C. Siegel +2 more
doaj +1 more source
Bayesian and Machine Learning Methods in the Big Data Era for Astronomical Imaging [PDF]
, 2023 The Atacama large millimeter/submillimeter array with the planned electronic upgrades will deliver an unprecedented number of deep and high resolution observations.
Philipp Arras +6 more
core +2 more sources
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
Self-Supervised Learning for Solar Radio Spectrum Classification
, 2022 Solar radio observation is an important way to study the Sun. Solar radio bursts contain important information about solar activity. Therefore, real-time automatic detection and classification of solar radio bursts are of great value for subsequent solar
Siqi Li +4 more
core +1 more source
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
Gaussian processes - a gentle introduction
, 2022 Slides presented at the Exoplanets Astrostatistics Summer School (12-16 Sept. 2022 in Geneva).
Vinesh Maguire Rajpaul
core +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
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
Characterizing the Conditional Galaxy Property Distribution Using Gaussian Mixture Models
The Astrophysical Journal, 2023 Line-intensity mapping (LIM) is a promising technique to constrain the global distribution of galaxy properties. To combine LIM experiments probing different tracers with traditional galaxy surveys and fully exploit the scientific potential of these ...
Yucheng Zhang +7 more
doaj +1 more source