The second in our Great Balls of FIRE series, where we (me, Mike Grudić, Zach Hafen, and Astrid Lamberts study the formation and evolution of globular clusters in a realistic MHD galaxy simulation https://arxiv.org/abs/2203.16547. This is the second paper in a series. The first paper in the series (https://arxiv.org/abs/2203.05732) identified all the clusters that formed … Continue reading Great Balls of FIRE
Thrilled to announce that Tomás Cabrera, a second year in our group, received an honorable mention for the 2022 GRFP! PI Carl Rodriguez also received a Sloan fellowship for 2022.
After several years of work that started before I was an assistant prof, we have the first public release of the Cluster Monte Carlo code, CMC. The paper is available here while the code itself is available here. CMC is a Monte Carlo technique for stellar dynamics, based on an aproach developed by Hénon in … Continue reading The Cluster Monte Carlo (CMC) Code
Thrilled to say that our team has been awarded a NASA Astrophysics Theory Program (ATP) Grant (21-ATP21-0144) for the 2021 cycle! Split between CMU (PI: Rodriguez, Co-I: Trac) and Northwestern University (Co-Is: Fragione, Rasio), the 4 year, ~$750K grant is to study the dynamical evolution of nuclear star clusters, the largest and densest stellar clusters … Continue reading NASA Grant to Support Our Group
Are you a scientist with a bunch of Zotero entries that have 1000+ authors (*cough* the LIGO Scientific Collaboration *cough*)? Is your bibtex file huge, and does the Sync with Zotero option break whenever you try to load a bibtext file into Overleaf (with an unhelpful error message)? Then you should update your library to … Continue reading How to reduce the number of authors in your Zotero library
In a new research note, we argue that it is now possible to explain the ENTIRE rate of merging binary black holes (BBHs) detected by LIGO with globular clusters. After the first detection (GW150914), the rate of BBH mergers that LIGO predicted was more than 200/Gpc^3/yr. Almost every formation channel predicted merger rates of around … Continue reading The Observed Rate of Binary Black Hole Merger can be Entirely Explained by Globular Clusters
Since I published my paper on spin orientations last year (Rodriguez et al., 2016 or my last post), I think I've managed to convince some people that the positive (or negative) values for the effective spins of merging black hole binaries could be a good way to discriminate whether the system was formed from stellar … Continue reading Post-Newtonian Stellar Dynamics
It's been an interesting few years since the first detection of gravitational waves. We've gone from a single, initial binary black hole mergers (GW150914), to 6 detentions (5 binary black holes and 1 binary neutron star merger). As you an imagine, this has been pretty damned exciting. But we still haven't settled exactly where these … Continue reading Black Hole Spins
So it's about time that I actually published something here, and this seems as good a topic as any. As most of you probably know, LIGO, the Laser Interferometer Gravitational Wave Observatory, reported the detection of gravitational waves a couple of months ago! Talk about a ridiculously exciting time to be doing what I do. … Continue reading Globular Clusters as Binary Black Hole Factories
I'm keeping a list of posts about work I've been doing, either my own papers or papers I've worked on with other people. For now, this is blank, but I intend to do retroactive posts on the papers I've worked on in the past.