The Center for Computational Astrophysics executes research programs on systems ranging in scales from planets to cosmology, creating and using computational tools for data analysis and theory. It also supports, trains, and equips diverse members of the global astrophysics community and convenes events and workshops in New York City.
Featured News
Center for Computational Astrophysics
Origin of Supermassive Black Hole Flares Identified: Largest-Ever Simulations Suggest Flickering Powered by Magnetic ‘Reconnection’
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Researchers at the Flatiron Institute and their collaborators found that breaking and reconnecting magnetic field lines near the event horizon release energy from a black hole’s magnetic field, accelerating particles that generate intense flares. The findings hint at exciting new possibilities in black hole observation.
Our Mission:
▪ Solve important, hard problems in computational astrophysics. Focus on problems that we at Flatiron are uniquely positioned to solve. ▪ Invent and propagate better data-analysis practices, analytical methods and computational methods for the global astrophysics community, with a focus on rigor. ▪ Develop, maintain and contribute to open-source software packages, open data and their communities. ▪ Create and support a community of astrophysics doers, learners and mentors in New York City and beyond. ▪ Train and launch diverse early-career researchers in astrophysics with unique capabilities in computational methods.
Groups
Upcoming Events
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26 Thu -
Colloquium 3:30 - 4:30 p.m.
CCA Colloquium: Risa Wechsler
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Event 3:30 - 4:30 p.m.
CCA Colloquium: Risa Wechsler
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Colloquium 3:30 - 4:30 p.m.
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31 Tue -
Seminar 3:00 - 5:00 p.m.
FI Computational Methods and Data Science Journal Club: Michael Eickenberg (CCM)
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Seminar 3:00 - 5:00 p.m.
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03 Fri -
Event 3:30 - 4:30 p.m.
CCA Colloquium: Erica Nelson
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Event 3:30 - 4:30 p.m.
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07 Tue -
Workshop 9:00 a.m. - 5:00 p.m.
Computational Astrophysics in the ngVLA Era: Synergistic Simulations, Theory, and Observations
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Workshop 9:00 a.m. - 5:00 p.m.
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23 Thu -
Event 3:30 - 4:30 p.m.
CCA Colloquium: Hiranya Peiris
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Event 3:30 - 4:30 p.m.
CCA Colloquium: Hiranya Peiris
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Event 3:30 - 4:30 p.m.
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29 Wed -
Workshop 9:30 a.m. - 5:00 p.m.
N Body Workshop
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Workshop 9:30 a.m. - 5:00 p.m.
Event Videos
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Dan Huber: The Demographic of Star and Exoplanets in the Era of TESS Gaia
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Daniel Kasen: The Signals of Merging Neutron Stars and Black Holes
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Carl Fields: Next-Generation Simulations of the Remarkable Deaths of Massive Stars
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Day 3 Session 1: What we have learned, assignments and next steps
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Research Highlights
Learning the Evolution of the Universe in N-body Simulations
Understanding the physics of large cosmological surveys down to small (nonlinear) scales will significantly improve our knowledge of the Universe.…
arxiv:2012.05472The Quijote Simulations
Govind Menon, ChangHoon Hahn, Elena Massara, Arka Banerjee, Ana Maria Delgado, Doogesh Kodi Ramanah, Tom Charnock, E. Giusarma, Y. Li, Erwan Allys, Antoine Brochard, Cora Uhlemann, Chi-Ting Chiang, S. He, Alice Pisani, Andrej Obuljen, Yu Feng, Emanuele Castorina, Gabriella Contardo, Christina D. Kreisch, Andrina Nicola, Justin Alsing, Roman Scoccimarro, Licia Verde, Matteo Viel, S. Ho, S. Mallat, Benjamin Wandelt, F. Villaescusa-Navarro, D. Spergel
The Quijote simulations are a set of 44,100 full N-body simulations spanning more than 7000 cosmological models in the $\{{{\rm{\Omega…
The Astrophysical Journal Supplement SeriesTemperatures and Metallicities of M dwarfs in the APOGEE Survey
J. Birky, D. Hogg, A.W. Mann, A. Burgasser
M dwarfs have enormous potential for our understanding of structure and formation on both Galactic and exoplanetary scales through their…
arXiv:2001.04962Director
Software
STARRY
starry enables the computation of fast and precise light curves for various applications in astronomy: transits and secondary eclipses of exoplanets, light curves of eclipsing binaries, rotational phase curves of exoplanets, light curves of planet-planet and planet-moon occultations, and more.
George
George is a fast and flexible Python library for Gaussian Process Regression. It capitalizes on the Hierarchical Off-Diagonal Low-Rank formalism to make controlled approximations for fast execution.
celerite
celerite is a library for fast and scalable Gaussian Process (GP) Regression in one dimension with implementations in C++, Python, and Julia.
Astrometry.net
If you have astronomical imaging of the sky with celestial coordinates you do not know—or do not trust—then Astrometry.net is for you. Input an image and we'll give you back astrometric calibration meta-data, plus lists of known objects falling inside the field of view.
DAFT
Daft is a Python package that uses matplotlib to render pixel-perfect probabilistic graphical models for publication in a journal or on the internet.
emcee
emcee is an extensible, pure-Python implementation of Goodman & Weare's Affine Invariant Markov chain Monte Carlo (MCMC) Ensemble sampler. It's designed for Bayesian parameter estimation.