Dan F-M
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dfm.io
Dan F-M
@dfm.io
1.6K followers 290 following 38 posts
Retired computational astrophysicist
Interpretability at Anthropic; prev Google DeepMind, Simons Foundation, Journal of Open Source Software
(he/him)

https://dfm.io // https://github.com/dfm
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dfm.io
Don’t worry - we’re still repping open publishing models over here… 😍
A selfie where I have a sleeping baby on my chest. The baby is wearing a shirt with the “showyourwork!” logo (https://show-your.work)
July 15, 2025 at 6:59 PM
dfm.io
Now that I don’t work in astro research anymore (and because I’m on parental leave), it is time to retire from @joss-openjournals.bsky.social. It’s been an amazing 5 years supporting open source software in academic astrophysics, and I’m excited to see what the future holds for JOSS!
A screenshot of an iOS notification from Slackbot that says “You have been removed from the private channel joss by Arfon Smith”
July 15, 2025 at 6:56 PM
dfm.io
A happy customer from the other one!
The link is to https://dfm.io/posts/intro-to-numpyro/, which I am quite proud of…
A screenshot of a quote tweet saying "If you want to get started with NumPyro then @exoplaneteer's tutorial ([link here]) is much better than the documentation." The quoted tweet seems to mention something about tracing errors with the text "NumPyro is going great."
July 11, 2023 at 10:44 AM
dfm.io
👋 Hi! I'm Dan (you might know me as 🐦/exoplaneteer).

I'm an astronomer in New York City who mostly writes code to help other people do astronomy. Find more info here: https://dfm.io

These days I'm on leave, spending my time teaching my little one about underappreciated rock climbing techniques…
A close up of a newborn baby's hand holding what seems to be a pink piece of rock climbing gear (for those who know, it is a "tricam")
July 5, 2023 at 1:06 PM