Results 41 to 50 of about 526 (97)
Estimating stellar oscillation-related parameters and their uncertainties with the moment method
, 2005 The moment method is a well known mode identification technique in asteroseismology (where `mode' is to be understood in an astronomical rather than in a statistical sense), which uses a time series of the first 3 moments of a spectral line to estimate ...
Aerts C. +8 more
core +3 more sources
The Astrophysical JournalWe present StarryStarryProcess , a novel hierarchical Bayesian framework for mapping stellar surfaces using exoplanet transit light curves. While previous methods relied solely on stellar rotational light curves—which contain limited information about ...
Sabina Sagynbayeva +3 more
doaj +1 more source
Bayesian Methods for Analysis and Adaptive Scheduling of Exoplanet Observations
, 2018 We describe work in progress by a collaboration of astronomers and statisticians developing a suite of Bayesian data analysis tools for extrasolar planet (exoplanet) detection, planetary orbit estimation, and adaptive scheduling of observations. Our work
Balan +28 more
core +1 more source
ABC-SN: Attention-based Classifier for Supernova Spectra
The Astrophysical JournalWhile significant advances have been made in photometric classification ahead of the millions of transient events and hundreds of supernovae (SNe) each night that the Vera C.
Willow Fox Fortino +4 more
doaj +1 more source
The Astrophysical Journal, 2023 A large sample of active-region-targeted time-series images from the Solar Dynamics Observatory/Atmospheric Imaging Assembly (AIA), the AIA Active Region Patch database (Paper I) is used to investigate whether parameters describing the coronal ...
K. D. Leka +3 more
doaj +1 more source
Insights on the Spectral Signatures of Stellar Activity and Planets from PCA
, 2017 Photospheric velocities and stellar activity features such as spots and faculae produce measurable radial velocity signals that currently obscure the detection of sub-meter-per-second planetary signals.
Cisewski, Jessi +4 more
core +1 more source
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
doaj +1 more source
On the 3D structure of the mass, metallicity, and SFR space for SF galaxies
, 2013 We demonstrate that the space formed by the star-formation rate (SFR), gas-phase metallicity (Z), and stellar mass (M), can be reduced to a plane, as first proposed by Lara-Lopez et al.
Abazajian +18 more
core +1 more source
Exploring Magnetic Fields in Molecular Clouds through Denoising Diffusion Probabilistic Models
The Astrophysical JournalAccurately measuring magnetic field strength in the interstellar medium, including giant molecular clouds, remains a significant challenge. We present a machine learning approach using denoising diffusion probabilistic models (DDPMs) to estimate magnetic
Duo Xu +5 more
doaj +1 more source
The Astrophysical JournalAn important task in the study of fast radio bursts (FRBs) remains the automatic classification of repeating and nonrepeating sources based on their morphological properties. We propose a statistical model that considers a modified logistic regression to
Antonio Herrera-Martin +10 more
doaj +1 more source