## APS 2021 talk slides: Energy carried by gravitational waves in bimetric gravity

I haven’t been posting every time I gave a talk, so here is a sporadic update. I contributed a talk to the 2021 April APS meeting. This talk is a status u...

I haven’t been posting every time I gave a talk, so here is a sporadic update. I contributed a talk to the 2021 April APS meeting. This talk is a status u...

Just one more committee

Highly precise and robust waveform models are required as improvements in detector sensitivity enable us to test general relativity with more precision t...

Gravitational memory effects and the BMS freedoms exhibited at future null infinity have recently been resolved and utilized in numerical relativity simu...

Numerical relativity (NR) simulations of binary black holes provide precise waveforms, but are typically too computationally expensive to produce wavefor...

Numerical relativity simulations provide the most precise templates for the gravitational waves produced by binary black hole mergers. However, many of t...

The Bondi-van der Burg-Metzner-Sachs (BMS) group, which uniquely describes the symmetries of asymptotic infinity and therefore of the gravitational waves...

Quasi-normal mode (QNM) modeling is an invaluable tool for characterizing remnant black holes, studying strong gravity, and testing general relativity. ...

Understanding the Bondi-Metzner-Sachs (BMS) frame of the gravitational waves produced by numerical relativity is crucial for ensuring that analyses on su...

We present a new study of remnant black hole properties from 13 binary black hole systems, numerically evolved using the Spectral Einstein Code. The mass...

We study the structure of asymptotic null infinity in the Brans-Dicke theory of gravity

Angular momentum is tricky to define in GR! Here’s an approach so that observers can all agree with each others’ measurements.

We perform a new test of general relativity (GR) with signals from GWTC-2, the LIGO and Virgo catalog of gravitational wave detections. We search for the...

The first astrophysically-relevant numerical simulation of merging black holes in a higher-curvature theory beyond GR.

The first numerical beyond-GR binary black hole merger simulation.

Want to hear me talk about numerical relativity and theories beyond GR?

Finding the shape of extremal black holes in beyond-GR theories

Here to save you some algebra and column-inches

Just an update on talks I gave recently. Valeria Ferrari, Leonardo Gualtieri, and Paolo Pani hosted the conference “New Frontiers in Gravitational-Wave Astr...

One of the first numerical simulations of black hole mergers in beyond-GR effective field theories

My talk slides/movies from TG17 and APS17

My talk slides/movies from the FF2016 conference at Northwestern

My talk slides/movies from the GR21 conference in NYC

My talks slides/movies from the 2016 April APS meeting in SLC

Progress in understanding the structure of extremal black holes in Chern-Simons

Numerical solutions for rapidly-rotating dCS black holes show where the weak-coupling expansion breaks down.

The post-Newtonian calculation scheme applied to binary inspirals in a broad class of almost-GR theories.

One of the important targets for the future space-based gravitational wave observatory LISA is extreme mass ratio inspirals (EMRIs), where long and accur...

Just one more committee

In theories of gravity that include a scalar field, a compact object’s scalar charge is a crucial quantity since it controls dipole radiation, which can be s...

Finding the shape of extremal black holes in beyond-GR theories

Here to save you some algebra and column-inches

Not all theories with long-ranged scalar fields produce dipole radiation in binaries

The post-Newtonian calculation scheme applied to binary inspirals in a broad class of almost-GR theories.

I missed the author index from LRR, so I rebuilt one.

Numerical relativity simulations provide the most precise templates for the gravitational waves produced by binary black hole mergers. However, many of t...

We present a numerical-relativity simulation of a black hole - neutron star merger in scalar-tensor (ST) gravity with binary parameters consistent with t...

We perform a new test of general relativity (GR) with signals from GWTC-2, the LIGO and Virgo catalog of gravitational wave detections. We search for the...

Gravity theories beyond general relativity (GR) can change the properties of gravitational waves: their polarizations, dispersion, speed, and, importantly, e...

I hosted a Quora session. It went well!

One of the important targets for the future space-based gravitational wave observatory LISA is extreme mass ratio inspirals (EMRIs), where long and accur...

I missed the author index from LRR, so I rebuilt one.

Here are a few tips for making your matplotlib figures look really “right” in a LaTeX publication.

Highly precise and robust waveform models are required as improvements in detector sensitivity enable us to test general relativity with more precision t...

Gravitational memory effects and the BMS freedoms exhibited at future null infinity have recently been resolved and utilized in numerical relativity simu...

Numerical relativity (NR) simulations of binary black holes provide precise waveforms, but are typically too computationally expensive to produce wavefor...

Numerical relativity simulations provide the most precise templates for the gravitational waves produced by binary black hole mergers. However, many of t...

We present a numerical-relativity simulation of a black hole - neutron star merger in scalar-tensor (ST) gravity with binary parameters consistent with t...

Our latest paper, Nonlinearities in black hole ringdowns, was just published in Physical Review Letters! This article was selected as an ❦ Editors’ Suggesti...

This article was selected as an ❦ Editors’ Suggestion, and Featured in APS’s Physics magazine. More press coverage links here.

The Bondi-van der Burg-Metzner-Sachs (BMS) group, which uniquely describes the symmetries of asymptotic infinity and therefore of the gravitational waves...

Quasi-normal mode (QNM) modeling is an invaluable tool for characterizing remnant black holes, studying strong gravity, and testing general relativity. ...

Understanding the Bondi-Metzner-Sachs (BMS) frame of the gravitational waves produced by numerical relativity is crucial for ensuring that analyses on su...

We present a new study of remnant black hole properties from 13 binary black hole systems, numerically evolved using the Spectral Einstein Code. The mass...

A surrogate model extending the parameter space range of fully precessing quasicircular inspirals

Accurate models of gravitational waves from merging black holes are necessary for detectors to observe as many events as possible while extracting the maximu...

Sometimes in a numerical method, you need to be able to continuously turn a calculation on or off in space or time.

Interactive toy for visualizing relationship between polynomial roots and coefficients

Here to save you some algebra and column-inches

An identity between vector commutation coefficients and coframe connection coefficients

These three objects form a superalgebra! Whoa!

There is a nice 4-dimensional Weyl identity that I can never seem to remember off the top of my head; so I decided I need to write this note so I don’t have ...

Highly precise and robust waveform models are required as improvements in detector sensitivity enable us to test general relativity with more precision t...

Gravitational memory effects and the BMS freedoms exhibited at future null infinity have recently been resolved and utilized in numerical relativity simu...

Numerical relativity (NR) simulations of binary black holes provide precise waveforms, but are typically too computationally expensive to produce wavefor...

The Bondi-van der Burg-Metzner-Sachs (BMS) group, which uniquely describes the symmetries of asymptotic infinity and therefore of the gravitational waves...

Quasi-normal mode (QNM) modeling is an invaluable tool for characterizing remnant black holes, studying strong gravity, and testing general relativity. ...

Understanding the Bondi-Metzner-Sachs (BMS) frame of the gravitational waves produced by numerical relativity is crucial for ensuring that analyses on su...

I haven’t been posting every time I gave a talk, so here is a sporadic update. I contributed a talk to the 2021 April APS meeting. This talk is a status u...

We present a new study of remnant black hole properties from 13 binary black hole systems, numerically evolved using the Spectral Einstein Code. The mass...

We study the structure of asymptotic null infinity in the Brans-Dicke theory of gravity

Angular momentum is tricky to define in GR! Here’s an approach so that observers can all agree with each others’ measurements.

I am honored to have been selected as one of this year’s Sloan Research Fellows!

We present a numerical-relativity simulation of a black hole - neutron star merger in scalar-tensor (ST) gravity with binary parameters consistent with t...

One of the key ingredients for making binary waveform predictions in a beyond-GR theory of gravity is understanding the energy and angular momentum carri...

We perform a new test of general relativity (GR) with signals from GWTC-2, the LIGO and Virgo catalog of gravitational wave detections. We search for the...

We study the structure of asymptotic null infinity in the Brans-Dicke theory of gravity

The first astrophysically-relevant numerical simulation of merging black holes in a higher-curvature theory beyond GR.

The first numerical beyond-GR binary black hole merger simulation.

Want to hear me talk about numerical relativity and theories beyond GR?

Gravity theories beyond general relativity (GR) can change the properties of gravitational waves: their polarizations, dispersion, speed, and, importantly, e...

In theories of gravity that include a scalar field, a compact object’s scalar charge is a crucial quantity since it controls dipole radiation, which can be s...

Finding the shape of extremal black holes in beyond-GR theories

Here to save you some algebra and column-inches

Just an update on talks I gave recently. Valeria Ferrari, Leonardo Gualtieri, and Paolo Pani hosted the conference “New Frontiers in Gravitational-Wave Astr...

One of the first numerical simulations of black hole mergers in beyond-GR effective field theories

My talk slides/movies from TG17 and APS17

My talk slides/movies from the EHT16 conference in Cambrige, MA

My talk slides/movies from the FF2016 conference at Northwestern

My talk slides/movies from the GR21 conference in NYC

My talks slides/movies from the 2016 April APS meeting in SLC

Invited review for CQG Focus Issue

Progress in understanding the structure of extremal black holes in Chern-Simons

Not all theories with long-ranged scalar fields produce dipole radiation in binaries

A major review on non-GR theories, black holes and neutron stars in non-GR theories, compact binaries in non-GR theories, and pulsar, gravitational-wave, and...

Numerical solutions for rapidly-rotating dCS black holes show where the weak-coupling expansion breaks down.

MIT PhD thesis of Leo C. Stein

The post-Newtonian calculation scheme applied to binary inspirals in a broad class of almost-GR theories.

We numerically investigate the imprints of gravitational radiation-reaction driven changes to a black hole’s mass and spin on the corresponding ringdown ...

In this short Note, I answer the titular question: Yes, a radiation gauge can be horizon-locking. Radiation gauges are very common in black hole perturbat...

Our latest paper, Nonlinearities in black hole ringdowns, was just published in Physical Review Letters! This article was selected as an ❦ Editors’ Suggesti...

This article was selected as an ❦ Editors’ Suggestion, and Featured in APS’s Physics magazine. More press coverage links here.

One of the important targets for the future space-based gravitational wave observatory LISA is extreme mass ratio inspirals (EMRIs), where long and accur...

Accurate and efficient modeling of the dynamics of binary black holes (BBHs) is crucial to their detection through gravitational waves (GWs), with LIGO/V...

We show that an eccentric binary of black holes with misaligned spins is integrable at 2PN order. We also construct 4 out of 5 action variables at 1.5PN.

Merger dynamics create an attractive fixed-point in the space of distributions

Last week I gave an invited talk at the Spring 2020 workshop of the Black Hole Perturbation Toolkit (BHPToolkit). The BHPToolkit is a collection of open sou...

The first astrophysically-relevant numerical simulation of merging black holes in a higher-curvature theory beyond GR.

The dividing line between bound and plunging orbits is an algebraic variety

qnm is an open-source Python package for computing the Kerr quasinormal mode frequencies, angular separation constants, and spherical-spheroidal mixing coeff...

Hear me, Katie Bouman, and friends talk about how to snap a picture of a black hole with the Event Horizon Telescope!

The first numerical beyond-GR binary black hole merger simulation.

A surrogate model extending the parameter space range of fully precessing quasicircular inspirals

Accurate models of gravitational waves from merging black holes are necessary for detectors to observe as many events as possible while extracting the maximu...

I’m on Episode 42 of the Starts with a Bang Podcast

Want to hear me talk about numerical relativity and theories beyond GR?

Real-time interactive visualizations of merging black holes in seconds!

Modeling black holes remnants directly from numerical relativity

The grand challenges of contemporary fundamental physics—dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities an...

In theories of gravity that include a scalar field, a compact object’s scalar charge is a crucial quantity since it controls dipole radiation, which can be s...

Modeling black holes’ kicks directly from numerical relativity

Finding the shape of extremal black holes in beyond-GR theories

Just an update on talks I gave recently. Valeria Ferrari, Leonardo Gualtieri, and Paolo Pani hosted the conference “New Frontiers in Gravitational-Wave Astr...

Whenever you’ve got symmetry, you should use it!

One of the first numerical simulations of black hole mergers in beyond-GR effective field theories

My talk slides/movies from TG17 and APS17

My talk slides/movies from the EHT16 conference in Cambrige, MA

My talk slides/movies from the FF2016 conference at Northwestern

My talk slides/movies from the GR21 conference in NYC

I’m on Episode 64 of the Titanium Physicists Podcast

My talks slides/movies from the 2016 April APS meeting in SLC

Interactive tool for visualizing spherical/circular photon orbits in Kerr

I hosted a Quora session. It went well!

Invited review for CQG Focus Issue

I’m on Episode 62 of the Titanium Physicists Podcast

Progress in understanding the structure of extremal black holes in Chern-Simons

Interactive tool to compute Kerr quantities

Interactive tool to compute ISCOs in Kerr

A major review on non-GR theories, black holes and neutron stars in non-GR theories, compact binaries in non-GR theories, and pulsar, gravitational-wave, and...

Numerical solutions for rapidly-rotating dCS black holes show where the weak-coupling expansion breaks down.

MIT PhD thesis of Leo C. Stein

We revisit a textbook example of a singularly perturbed nonlinear boundary-value problem. Unexpectedly, it shows a wealth of phenomena that seem to have ...

We show that an eccentric binary of black holes with misaligned spins is integrable at 2PN order. We also construct 4 out of 5 action variables at 1.5PN.

Interactive toy for understanding Poincaré sections and chaos

Here are a few tips for making your matplotlib figures look really “right” in a LaTeX publication.

The ssh protocol is smart enough that you can open a control ‘master’ connection and reuse it to logically “connect” to the same machine as many times as you...

TL;DR For a single repo, add a special “refspec” for a remote (e.g. upstream): git config --add remote.upstream.fetch "+refs/pull/*/head:refs/pullreqs/*" wh...

Last week I gave an invited talk at the Spring 2020 workshop of the Black Hole Perturbation Toolkit (BHPToolkit). The BHPToolkit is a collection of open sou...

qnm is an open-source Python package for computing the Kerr quasinormal mode frequencies, angular separation constants, and spherical-spheroidal mixing coeff...

Accurate models of gravitational waves from merging black holes are necessary for detectors to observe as many events as possible while extracting the maximu...

Real-time interactive visualizations of merging black holes in seconds!

Modeling black holes remnants directly from numerical relativity

Modeling black holes’ kicks directly from numerical relativity

I’m releasing into the wild a simple code for computing neutron star structure in the slow-rotation expansion to first and second order. This code was origi...

Here to save you some algebra and column-inches

How to get remote jupyter to automatically open a local browser.

I just created a repo on github for computing complete elliptic integrals in javascript. The README.md is below, and a demo after that. You might ask yoursel...

If you’re in the intersection of git, emacs, and persnickety about whitespace.

That moment when social media creates scientific collaboration

I’m releasing into the wild a simple code for computing neutron star structure in the slow-rotation expansion to first and second order. This code was origi...

Not all theories with long-ranged scalar fields produce dipole radiation in binaries

A major review on non-GR theories, black holes and neutron stars in non-GR theories, compact binaries in non-GR theories, and pulsar, gravitational-wave, and...

We study the structure of asymptotic null infinity in the Brans-Dicke theory of gravity

Integrability conditions when trying to solve for a conformal factor

One of the key ingredients for making binary waveform predictions in a beyond-GR theory of gravity is understanding the energy and angular momentum carri...

So you have a function in terms of a continued fraction, and you want to compute its derivative…

Accurate and efficient modeling of the dynamics of binary black holes (BBHs) is crucial to their detection through gravitational waves (GWs), with LIGO/V...

We revisit a textbook example of a singularly perturbed nonlinear boundary-value problem. Unexpectedly, it shows a wealth of phenomena that seem to have ...

Perturbation theory is a crucial tool for many physical systems, when exact solutions are not available, or nonperturbative numerical solutions are intra...

We show that an eccentric binary of black holes with misaligned spins is integrable at 2PN order. We also construct 4 out of 5 action variables at 1.5PN.

Interactive toy for understanding Poincaré sections and chaos

The dividing line between bound and plunging orbits is an algebraic variety

Interactive tool for visualizing spherical/circular photon orbits in Kerr

A generalization of symplectic integrators to non-conservative dynamics.

Extending Hamilton’s variational principle to nonconservative systems.

How to do the STF multipole expansion of the magnetic potential and field (it’s been on my TODO list for a while)

The ssh protocol is smart enough that you can open a control ‘master’ connection and reuse it to logically “connect” to the same machine as many times as you...

If you’re in the intersection of git, emacs, and persnickety about whitespace.

I am honored to have been selected as one of this year’s Sloan Research Fellows!

One of the key ingredients for making binary waveform predictions in a beyond-GR theory of gravity is understanding the energy and angular momentum carri...

We numerically investigate the imprints of gravitational radiation-reaction driven changes to a black hole’s mass and spin on the corresponding ringdown ...

In this short Note, I answer the titular question: Yes, a radiation gauge can be horizon-locking. Radiation gauges are very common in black hole perturbat...

Our latest paper, Nonlinearities in black hole ringdowns, was just published in Physical Review Letters! This article was selected as an ❦ Editors’ Suggesti...

This article was selected as an ❦ Editors’ Suggestion, and Featured in APS’s Physics magazine. More press coverage links here.

Accurate and efficient modeling of the dynamics of binary black holes (BBHs) is crucial to their detection through gravitational waves (GWs), with LIGO/V...

Merger dynamics create an attractive fixed-point in the space of distributions

The generalized harmonic formulation can be derived by adding a gauge-fixing term to the Einstein-Hilbert action

The dividing line between bound and plunging orbits is an algebraic variety

qnm is an open-source Python package for computing the Kerr quasinormal mode frequencies, angular separation constants, and spherical-spheroidal mixing coeff...

Hear me, Katie Bouman, and friends talk about how to snap a picture of a black hole with the Event Horizon Telescope!

A surrogate model extending the parameter space range of fully precessing quasicircular inspirals

I’m on Episode 42 of the Starts with a Bang Podcast

Want to hear me talk about numerical relativity and theories beyond GR?

Real-time interactive visualizations of merging black holes in seconds!

Modeling black holes remnants directly from numerical relativity

Gravity theories beyond general relativity (GR) can change the properties of gravitational waves: their polarizations, dispersion, speed, and, importantly, e...

The grand challenges of contemporary fundamental physics—dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities an...

Modeling black holes’ kicks directly from numerical relativity

Finding the shape of extremal black holes in beyond-GR theories

Whenever you’ve got symmetry, you should use it!

One of the first numerical simulations of black hole mergers in beyond-GR effective field theories

My talk slides/movies from the EHT16 conference in Cambrige, MA

I’m on Episode 64 of the Titanium Physicists Podcast

Interactive tool for visualizing spherical/circular photon orbits in Kerr

I hosted a Quora session. It went well!

Angular momentum is tricky to define in GR! Here’s an approach so that observers can all agree with each others’ measurements.

Invited review for CQG Focus Issue

I’m on Episode 62 of the Titanium Physicists Podcast

Not all theories with long-ranged scalar fields produce dipole radiation in binaries

Interactive tool to compute Kerr quantities

Interactive tool to compute ISCOs in Kerr

MIT PhD thesis of Leo C. Stein

In this short Note, I answer the titular question: Yes, a radiation gauge can be horizon-locking. Radiation gauges are very common in black hole perturbat...

Perturbation theory is a crucial tool for many physical systems, when exact solutions are not available, or nonperturbative numerical solutions are intra...

We study the structure of asymptotic null infinity in the Brans-Dicke theory of gravity

Integrability conditions when trying to solve for a conformal factor

Here to save you some algebra and column-inches

An identity between vector commutation coefficients and coframe connection coefficients

These three objects form a superalgebra! Whoa!

When can you integrate-by-parts with Lie derivatives?

Special thanks to Ben Mares for coming up with this identity.

There is a nice 4-dimensional Weyl identity that I can never seem to remember off the top of my head; so I decided I need to write this note so I don’t have ...

The Weyl decomposition, further splitting into E/B, and computing in terms of 3+1 objects

In an effort to keep myself organized, I decided I should type up some notes I have laying around.

TL;DR For a single repo, add a special “refspec” for a remote (e.g. upstream): git config --add remote.upstream.fetch "+refs/pull/*/head:refs/pullreqs/*" wh...

If you’re in the intersection of git, emacs, and persnickety about whitespace.

I am honored to have been selected as one of this year’s Sloan Research Fellows!

We numerically investigate the imprints of gravitational radiation-reaction driven changes to a black hole’s mass and spin on the corresponding ringdown ...

We study the structure of asymptotic null infinity in the Brans-Dicke theory of gravity

Last week I gave an invited talk at the Spring 2020 workshop of the Black Hole Perturbation Toolkit (BHPToolkit). The BHPToolkit is a collection of open sou...

The first numerical beyond-GR binary black hole merger simulation.

One of the first numerical simulations of black hole mergers in beyond-GR effective field theories

I hosted a Quora session. It went well!

Not all theories with long-ranged scalar fields produce dipole radiation in binaries

We study the structure of asymptotic null infinity in the Brans-Dicke theory of gravity

Merger dynamics create an attractive fixed-point in the space of distributions

The dividing line between bound and plunging orbits is an algebraic variety

The first numerical beyond-GR binary black hole merger simulation.

A surrogate model extending the parameter space range of fully precessing quasicircular inspirals

Real-time interactive visualizations of merging black holes in seconds!

Modeling black holes remnants directly from numerical relativity

The grand challenges of contemporary fundamental physics—dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities an...

Modeling black holes’ kicks directly from numerical relativity

Finding the shape of extremal black holes in beyond-GR theories

Whenever you’ve got symmetry, you should use it!

One of the first numerical simulations of black hole mergers in beyond-GR effective field theories

MIT PhD thesis of Leo C. Stein

Perturbation theory is a crucial tool for many physical systems, when exact solutions are not available, or nonperturbative numerical solutions are intra...

Finding the shape of extremal black holes in beyond-GR theories

Whenever you’ve got symmetry, you should use it!

We revisit a textbook example of a singularly perturbed nonlinear boundary-value problem. Unexpectedly, it shows a wealth of phenomena that seem to have ...

Integrability conditions when trying to solve for a conformal factor

Interactive toy for understanding Poincaré sections and chaos

Real-time interactive visualizations of merging black holes in seconds!

Interactive toy for visualizing relationship between polynomial roots and coefficients

Interactive tool for visualizing spherical/circular photon orbits in Kerr

Interactive tool to compute Kerr quantities

Interactive tool to compute ISCOs in Kerr

How to get remote jupyter to automatically open a local browser.

How to get remote jupyter to automatically open a local browser.

I just created a repo on github for computing complete elliptic integrals in javascript. The README.md is below, and a demo after that. You might ask yoursel...

How to get remote jupyter to automatically open a local browser.

If you’re in the intersection of git, emacs, and persnickety about whitespace.

How to do the STF multipole expansion of the magnetic potential and field (it’s been on my TODO list for a while)

So you have a function in terms of a continued fraction, and you want to compute its derivative…

The first numerical beyond-GR binary black hole merger simulation.

A surrogate model extending the parameter space range of fully precessing quasicircular inspirals

Want to hear me talk about numerical relativity and theories beyond GR?

Hear me, Katie Bouman, and friends talk about how to snap a picture of a black hole with the Event Horizon Telescope!

I’m on Episode 42 of the Starts with a Bang Podcast

Want to hear me talk about numerical relativity and theories beyond GR?

I’m on Episode 64 of the Titanium Physicists Podcast

I hosted a Quora session. It went well!

I’m on Episode 62 of the Titanium Physicists Podcast

Finding the shape of extremal black holes in beyond-GR theories

Whenever you’ve got symmetry, you should use it!

One of the first numerical simulations of black hole mergers in beyond-GR effective field theories

MIT PhD thesis of Leo C. Stein

I’m on Episode 42 of the Starts with a Bang Podcast

I’m on Episode 64 of the Titanium Physicists Podcast

I’m on Episode 62 of the Titanium Physicists Podcast

Interactive toy for visualizing relationship between polynomial roots and coefficients

Not all theories with long-ranged scalar fields produce dipole radiation in binaries

Here are a few tips for making your matplotlib figures look really “right” in a LaTeX publication.

So you have a function in terms of a continued fraction, and you want to compute its derivative…

Real-time interactive visualizations of merging black holes in seconds!

Modeling black holes remnants directly from numerical relativity

Modeling black holes’ kicks directly from numerical relativity

I missed the author index from LRR, so I rebuilt one.

How to get remote jupyter to automatically open a local browser.

I hosted a Quora session. It went well!

How to get remote jupyter to automatically open a local browser.

The first numerical beyond-GR binary black hole merger simulation.

Interactive toy for visualizing relationship between polynomial roots and coefficients

Here are a few tips for making your matplotlib figures look really “right” in a LaTeX publication.

So you have a function in terms of a continued fraction, and you want to compute its derivative…

I’m releasing into the wild a simple code for computing neutron star structure in the slow-rotation expansion to first and second order. This code was origi...

How to get remote jupyter to automatically open a local browser.

I hosted a Quora session. It went well!

That moment when social media creates scientific collaboration

Sometimes in a numerical method, you need to be able to continuously turn a calculation on or off in space or time.

I just created a repo on github for computing complete elliptic integrals in javascript. The README.md is below, and a demo after that. You might ask yoursel...

The ssh protocol is smart enough that you can open a control ‘master’ connection and reuse it to logically “connect” to the same machine as many times as you...

How to get remote jupyter to automatically open a local browser.

These three objects form a superalgebra! Whoa!

Merger dynamics create an attractive fixed-point in the space of distributions

A surrogate model extending the parameter space range of fully precessing quasicircular inspirals

Modeling black holes remnants directly from numerical relativity

Modeling black holes’ kicks directly from numerical relativity

Finding the shape of extremal black holes in beyond-GR theories

Whenever you’ve got symmetry, you should use it!

How to do the STF multipole expansion of the magnetic potential and field (it’s been on my TODO list for a while)

How to get remote jupyter to automatically open a local browser.

That moment when social media creates scientific collaboration

Here are a few tips for making your matplotlib figures look really “right” in a LaTeX publication.

Real-time interactive visualizations of merging black holes in seconds!

Want to hear me talk about numerical relativity and theories beyond GR?

Here to save you some algebra and column-inches

There is a nice 4-dimensional Weyl identity that I can never seem to remember off the top of my head; so I decided I need to write this note so I don’t have ...

I missed the author index from LRR, so I rebuilt one.