Trending Research

Reconstructing Primordial Curvature Perturbations via Scalar-Induced Gravitational Waves with LISA

jonaselgammal/sigway 20 Jan 2025

We also discuss the impact on the SIGW spectrum of non-standard thermal histories affecting the kernels of SIGW emission and non-Gaussianity in the statistics of the curvature perturbations.

Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory

2
0.03 stars / hour

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

4,587
0.03 stars / hour

The Multimodal Universe: Enabling Large-Scale Machine Learning with 100TB of Astronomical Scientific Data

multimodaluniverse/multimodaluniverse 3 Dec 2024

We present the MULTIMODAL UNIVERSE, a large-scale multimodal dataset of scientific astronomical data, compiled specifically to facilitate machine learning research.

Instrumentation and Methods for Astrophysics Astrophysics of Galaxies Solar and Stellar Astrophysics

373
0.03 stars / hour

Supernovae evidence for foundational change to cosmological models

zhaoolee/garss 19 Dec 2024

We present a new, cosmologically model-independent, statistical analysis of the Pantheon+ type Ia supernovae spectroscopic dataset, improving a standard methodology adopted by Lane et al. We use the Tripp equation for supernova standardisation alone, thereby avoiding any potential correlation in the stretch and colour distributions.

Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology

1,237
0.03 stars / hour

Segmentation of coronal holes in solar disk images with a convolutional neural network

observethesun/coronal_holes 15 Sep 2018

Current coronal holes segmentation methods typically rely on image thresholding and require non-trivial image pre- and post-processing.

Solar and Stellar Astrophysics

17
0.02 stars / hour

Bayesian pulsar timing and noise analysis with Vela.jl: an overview

abhisrkckl/vela.jl 20 Dec 2024

We present Vela, an efficient, modular, easy-to-use Bayesian pulsar timing and noise analysis package written in Julia.

Instrumentation and Methods for Astrophysics High Energy Astrophysical Phenomena

6
0.02 stars / hour

The MUSE Ultra Deep Field: A 5 Mpc stretch of the z $\approx$ 4 cosmic web revealed in emission

matteofox/SHINE 9 Dec 2024

We detect Ly$\alpha$ emission from a ~5 Mpc-long (comoving) portion of the cosmic web hosting an overdensity ($\delta \approx 25$) of 19 Ly$\alpha$ emitters (LAEs) at $z\approx 4$ within the MUSE Ultra Deep Field (MUDF), reaching an average surface brightness (SB) of $5\times 10^{-20}~\rm{erg~s^{-1}~ cm^{-2}~arcsec^{-2}}$.

Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics

3
0.02 stars / hour

Simulation-based inference has its own Dodelson-Schneider effect (but it knows that it does)

homerjed/sbiax 3 Dec 2024

The assumption that SBI requires a smaller number of simulations than covariance estimation for a Gaussian likelihood analysis is inaccurate.

Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics

15
0.02 stars / hour

A Parametric Study of the SASI Comparing General Relativistic and Nonrelativistic Treatments

AMReX-Codes/amrex 20 Jul 2023

We present numerical results from a parameter study of the standing accretion shock instability (SASI), investigating the impact of general relativity (GR) on the dynamics.

High Energy Astrophysical Phenomena Solar and Stellar Astrophysics General Relativity and Quantum Cosmology Fluid Dynamics

579
0.02 stars / hour

Acceleration and clustering of cosmic dust in a gravoturbulent gas -- I. Numerical simulation of the nearly Jeans-unstable case

pencil-code/pencil-code 1 Nov 2021

Turbulence is induced by stochastic compressive forcing which is delta-correlated in time.

Astrophysics of Galaxies Fluid Dynamics

201
0.02 stars / hour