The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package

astropy/astropy 28 Jun 2022

The Astropy Project supports and fosters the development of open-source and openly-developed Python packages that provide commonly needed functionality to the astronomical community.

Instrumentation and Methods for Astrophysics

4,140
0.04 stars / hour

The statistics of Rayleigh-Levy flight extrema

cncpichon/levyflight 24 Feb 2024

Rayleigh-Levy flights have played a significant role in cosmology as simplified models for understanding how matter distributes itself under gravitational influence.

Cosmology and Nongalactic Astrophysics

2
0.04 stars / hour

Detecting Gravitational Waves in Data with Non-Gaussian Noise

jroulet/cogwheel 15 Aug 2019

Searches for gravitational waves crucially depend on exact signal processing of noisy strain data from gravitational wave detectors, which are known to exhibit significant non-Gaussian behavior.

Instrumentation and Methods for Astrophysics High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology

18
0.03 stars / hour

WInDI: a Warp-Induced Dust Instability in protoplanetary discs

danieljprice/phantom 10 Nov 2023

We identify a new dust instability that occurs in warped discs.

Earth and Planetary Astrophysics Solar and Stellar Astrophysics

88
0.02 stars / hour

Stellar population properties for 2 million galaxies from SDSS DR14 and DEEP2 DR4 from full spectral fitting

FireflySpectra/Firefly_release 14 Feb 2019

We study the accuracy of parameter derivation, in particular the stellar mass, as a function of the signal-to-noise of the galaxy spectra.

Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics

25
0.02 stars / hour

Gaia Data Release 2: using Gaia parallaxes

agabrown/astrometry-inference-tutorials 25 Apr 2018

Finally, we provide examples that show more generally how to use astrometric data for parameter estimation, including the combination of proper motions and parallaxes and the handling of covariances in the uncertainties.

Instrumentation and Methods for Astrophysics

30
0.02 stars / hour

SBI++: Flexible, Ultra-fast Likelihood-free Inference Customized for Astronomical Applications

wangbingjie/sbi_pp 11 Apr 2023

With simulation-based inference (SBI), it is possible to attain complex posterior distributions with the accuracy of traditional methods but with a $>10^4$ increase in speed.

Instrumentation and Methods for Astrophysics Astrophysics of Galaxies

19
0.02 stars / hour

Efficiently evaluating loop integrals in the EFTofLSS using QFT integrals with massive propagators

dbraganca/python-integer-powers 14 Dec 2022

For each cosmology, the evaluation of a loop integral amounts to contracting this tensor with the coordinate vector of the linear power spectrum.

Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology High Energy Physics - Theory

4
0.02 stars / hour

The Athena++ Adaptive Mesh Refinement Framework: Multigrid Solvers for Self-Gravity

PrincetonUniversity/athena 27 Feb 2023

We describe the implementation of multigrid solvers in the Athena++ adaptive mesh refinement (AMR) framework and their application to the solution of the Poisson equation for self-gravity.

Instrumentation and Methods for Astrophysics

176
0.02 stars / hour

A proposal for community driven and decentralized astronomical databases and the Open Exoplanet Catalogue

hannorein/open_exoplanet_catalogue 29 Nov 2012

It is the only catalogue that can correctly represent the orbital structure of planets in arbitrary binary, triple and quadruple star systems, as well as orphan planets.

Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics Computational Physics Data Analysis, Statistics and Probability

973
0.02 stars / hour