Light

Andrew Hearin photo

aphearin Goto Github PK

followers: 40.0 following: 1.0 repos: 85.0 gists: 49.0

Name: Andrew Hearin

Type: User

Company: Argonne National Lab

About me

I am a Physicist in the Cosmological Physics & Advanced Computing (CPAC) Group at Argonne National Laboratory. I study cosmology and astrophysics using numerical simulations, theoretical models of cosmological structure growth, machine learning techniques, and observations from large-area galaxy surveys.

I am the lead developer of Halotools, an open-source python package for creating model universes of galaxies. I am also a member of several large collaborative experiments designed to measure dark energy and dark matter, including the Dark Energy Spectroscopic Instrument (DESI), and the Vera Rubin Observatory Legacy Survey of Space and Time Dark Energy Science Collaboration (LSST DESC).

Research

My recent work focuses on developing simulation-based, differentiable forward models of cosmological structure growth in the deeply nonlinear regime. The goals of this effort are to help uncover the physical nature of dark matter and dark energy, and to understand the connection between galaxies and dark matter halos. This program involves many different components, all of which leverage the autodiff library JAX, including:

Diffmah, a model of the assembly of individual dark matter halos
Diffstar, a model of the star formation history of individual galaxies
Diffprof, a model of the evolution of the density profile of dark matter halos
DSPS, a differentiable library of stellar population synthesis

Contact information

Dr. Andrew Hearin

email: ahearin [at] anl [dot] gov

Andrew Hearin's Projects

abhod_mcmc

Modules and script to run MCMC for a decorated HOD

accelerating_python

Repo demonstrating a specific example of how to use cython to speed up python

aphearin

ascii_read_generator

Generator-based algorithm to read ASCII data while applying row- and column-wise cuts on the fly

astrohackweek2015

Materials for the 2015 Astro Hack Week

astropy

Repository for the Astropy core package

astropy.github.com

The Astropy web pages

bt_umachine

Python package used to develop a model for B/T based on the UniverseMachine star-formation histories

c3dev

Development code and documentation for the DESI/C3 Working Group.

ccl

DESC Core Cosmology Library: cosmology routines with validated numerical accuracy

chicago_halotools_demo

Notebook providing demo of halotools

chopped_data_distribution

Disposable development code for distributing simulated data with mpi4py and thechopper

cleansweep

Package providing empirical modeling of host galaxy extinction

conda-channel-astropy

Packages built for the astropy conda channel

conditional_percentile

Cython calculation of the rank-order percentile calculated over a sliding window

corrfunc

Blazing fast correlation functions on the CPU.

cosmojax

JAX implementations of some basic cosmology calculations

ctwalker

Data processing and analysis tools for Consistent Trees outputs

custom_utilities

custom python utilities

cython_bug_demo

Minimal reproducer of cython compliation bug

cython_c_extension_example

Minimal example of how to write a cython wrapper around a C function

cython_periodic_pair_counters

Functions to count pairs in a periodic box

cython_pkg_demo

Working example of a python package with a cython module

decorated-hod-paper

Repository containing code to generate all results in the Introducing Decorated HODs paper (Hearin et al. 2015)

decorator-pattern-example

Simple code showing how to implement the decorator design pattern in python

dekel_profile

Analytic expressions for the Dekel+ profile

demorepo

dummy repo for quick demo purposes

descqa

A validation framework and tests for mock galaxy catalogs and beyond

dev_dc2_agn_model

Experimentation repo for modifications to the AGN model used in the DC2 image simulations

diffprof

1
2
3

Recommend Projects

React

A declarative, efficient, and flexible JavaScript library for building user interfaces.
Vue.js

🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
Typescript

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
TensorFlow

An Open Source Machine Learning Framework for Everyone
Django

The Web framework for perfectionists with deadlines.
Laravel

A PHP framework for web artisans
D3

Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

javascript

JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
web

Some thing interesting about web. New door for the world.
server

A server is a program made to process requests and deliver data to clients.
Machine learning

Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Visualization

Some thing interesting about visualization, use data art
Game

Some thing interesting about game, make everyone happy.

Recommend Org

Facebook

We are working to build community through open source technology. NB: members must have two-factor auth.
Microsoft

Open source projects and samples from Microsoft.
Google

Google ❤️ Open Source for everyone.
Alibaba

Alibaba Open Source for everyone
D3

Data-Driven Documents codes.
Tencent

China tencent open source team.