Measuring the viewing angle of GW170817 with electromagnetic and gravitational waves

sugwg/gw170817-inclination-angle 11 Apr 2018

The joint detection of gravitational waves (GWs) and electromagnetic (EM) radiation from the binary neutron star merger GW170817 ushered in a new era of multi-messenger astronomy.

High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology

6
0.01 stars / hour

An adaptive mesh, GPU-accelerated, and error minimized special relativistic hydrodynamics code

gamer-project/gamer 21 Dec 2020

We present a new special relativistic hydrodynamics (SRHD) code capable of handling coexisting ultra-relativistically hot and non-relativistically cold gases.

High Energy Astrophysical Phenomena

56
0.01 stars / hour

Constraining the nuclear equation of state with GW170817

sugwg/gw170817-common-eos 23 Apr 2018

We find that the tidal deformability and 90$\%$ credible interval is $\tilde{\Lambda}=310^{+679}_{-234}$ for a uniform component mass prior, $\tilde{\Lambda}=354^{+691}_{-245}$ for a component mass prior informed by radio observations of Galactic double neutron stars, and $\tilde{\Lambda}=334^{+669}_{-241}$ for a component mass prior informed by radio pulsars.

High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology

3
0.01 stars / hour

Transit Least Squares: An optimized transit detection algorithm to search for periodic transits of small planets

hippke/tls 7 Jan 2019

We have optimized TLS for both signal detection efficiency (SDE) of small planets and computational speed.

Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics

40
0.01 stars / hour

Cobaya: Code for Bayesian Analysis of hierarchical physical models

CobayaSampler/cobaya 11 May 2020

We present Cobaya, a general-purpose Bayesian analysis code aimed at models with complex internal interdependencies.

Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics

73
0.01 stars / hour

Core Cosmology Library: Precision Cosmological Predictions for LSST

LSSTDESC/CCL 14 Dec 2018

As a result, predictions for correlation functions of galaxy clustering, galaxy-galaxy lensing and cosmic shear are demonstrated to be within a fraction of the expected statistical uncertainty of the observables for the models and in the range of scales of interest to LSST.

Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics

99
0.01 stars / hour

Revisiting high-order Taylor methods for astrodynamics and celestial mechanics

bluescarni/heyoka.py 3 May 2021

We present heyoka, a new, modern and general-purpose implementation of Taylor's integration method for the numerical solution of ordinary differential equations.

Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics Computational Engineering, Finance, and Science Computational Physics

34
0.01 stars / hour

THOR: An Algorithm for Cadence-Independent Asteroid Discovery

moeyensj/thor 3 May 2021

We present "Tracklet-less Heliocentric Orbit Recovery" (THOR), an algorithm for linking of observations of Solar System objects across multiple epochs that does not require intra-night tracklets or a predefined cadence of observations within a search window.

Instrumentation and Methods for Astrophysics Earth and Planetary Astrophysics

18
0.01 stars / hour

emcee: The MCMC Hammer

wgurecky/bipymc 16 Feb 2012

The algorithm behind emcee has several advantages over traditional MCMC sampling methods and it has excellent performance as measured by the autocorrelation time (or function calls per independent sample).

Instrumentation and Methods for Astrophysics Computational Physics Computation

5
0.01 stars / hour

Ground-based Spectroscopy of the Exoplanet XO-2b using a Systematic Wavelength Calibration

pearsonkyle/Signal-Alignment 5 Nov 2018

We obtain consistent results from each telescope with a Na amplitude of 521$\pm$161 ppm and 403$\pm$186 ppm for GMOS and KOSMOS respectively.

Earth and Planetary Astrophysics

45
0.01 stars / hour