Dan F-M
@dfm.io
1.6K followers 280 following 38 posts
Retired computational astrophysicist Working on JAX at Google DeepMind (he/him) https://dfm.io // https://github.com/dfm
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Reposted by Dan F-M
philipmocz.bsky.social
We're hiring Flatiron Research Fellows & Software Fellows at the @flatironinstitute.org CCA. These independent postdoc positions offer outstanding opportunities for collaboration, computation, and scientific growth in NYC: apply.interfolio.com/173402 apply.interfolio.com/173403
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
apply.interfolio.com
dfm.io
Dan F-M @dfm.io · Jul 15
Thank you!!
dfm.io
Dan F-M @dfm.io · Jul 15
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)
dfm.io
Dan F-M @dfm.io · Jul 15
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”
dfm.io
Dan F-M @dfm.io · Apr 20
Given the groans that echo through the entire astronomical community every time it hits the news again, I'm not sure this is a fact that needs to be publicized… 🫠
Reposted by Dan F-M
flatironinstitute.org
Applications are open for #FlatironCCA's 2025-2026 Pre-Doctoral Program. Participants will collaborate with scientists on a project complementary to their thesis for 4.5 months at the Flatiron Institute. Stage 1 applications due 3/14: www.simonsfoundation.org/flatiron-ins... #science #astrophysics
Flatiron Institute Center for Computational Astrophysics Pre-Doctoral Program
Flatiron Institute Center for Computational Astrophysics Pre-Doctoral Program on Simons Foundation
www.simonsfoundation.org
Reposted by Dan F-M
blunt-comma-s.bsky.social
Hey bluesky! Do you want to develop your own open-source software in Python? Apply to attend Code/Astro!

Website: semaphorep.github.io/codeastro/
Scroll all the way down for the application link. :) Apps are due Feb 1! (1/2)
Program Description
A Software Engineering Workshop for Astronomy
semaphorep.github.io
dfm.io
Dan F-M @dfm.io · Dec 25
Now that I write code as a full-time job, I didn't think I would do adventofcode.com this year, but I couldn't stop myself. I just finished collecting all the stars, and it was great fun as always! Thanks for the fun ride, @was.tl!
Advent of Code 2024
adventofcode.com
dfm.io
Dan F-M @dfm.io · Dec 10
So bad! We haven't seen the "baby loves" books yet, so I'm glad to hear that there are some better options in the genre 😀
dfm.io
Dan F-M @dfm.io · Dec 8
When my kid was born, we were gifted all of those "Science X for Babies" books (IYKYK), and at 1.5 he has decided that they are the only books we ever read just to spite us…

At least he reaches for "Bayesian Probability" more frequently than "Astrophysics", proving that he's my child! 🤣
Reposted by Dan F-M
Reposted by Dan F-M
bmacastro.bsky.social
Prompted by this and a need for distraction I Did Some Math. Turns out most extrasolar planets are quite cauliflower-compatible. A thread, with citations. And laboratory astrophysics. And footnotes.
astrojonny.bsky.social
What I want from Bluesky
Kanye meme saying he doesn't want news about the world ending, only obscure science papers
dfm.io
Dan F-M @dfm.io · Jul 20
The values there are actually used as an initial guess for the optimization. It is circular, but in any real world application you'll also need to provide decent (whatever that means :D) initial guesses.

I mostly point people to tinygp.readthedocs.io instead of george but either should be ok.
tinygp — tinygp
tinygp.readthedocs.io
dfm.io
Dan F-M @dfm.io · Jul 16
Actually, I lied. You can use:

from numpy import sin as sine

but (I think?) not

import numpy.sin as sine

So there is a difference in that direction. But for modules they should be the same!
dfm.io
Dan F-M @dfm.io · Jul 16
I don't think there is any difference! I certainly use the two interchangeably and I'm having trouble thinking up potential pitfalls…
dfm.io
Dan F-M @dfm.io · Apr 11
Some news: in a few weeks I'll be leaving the Flatiron Institute to join Google DeepMind where I'll be working on the JAX core dev team.

It's bittersweet to leave astro which (for better or worse) has defined much of my identity for the past 15 years, but I'm excited about new adventures!
Reposted by Dan F-M
prappleizer.bsky.social
Thrilled to announce an event I've long been thinking about! Join us at Yale University for a "Hack Day Conference," in which a group of educators come together to build resources and exercises for teaching research methods in astronomy. See astrocodex.github.io for more.
Reposted by Dan F-M
malenarice.bsky.social
Delighted to announce that the inaugural New York Area Exoplanets Meeting (NYAEM) will take place at the Center for Computational Astrophysics (CCA) on May 30th, 2024! Abstract submission is open until April 5th, & registration until May 1st.

Find more information here: nyexoplanets.github.io 🔭🪐🧪
dfm.io
Dan F-M @dfm.io · Feb 26
Reposting for the weekday crowd!
dfm.io
Dan F-M @dfm.io · Feb 24
Applications are open for the pre-doc program at the CCA!

This program is for current astro grad students to come visit NYC for 5 months and collaborate with a CCA scientist on a research project. I ❤️ this program so much!!

Please apply and/or share!

www.simonsfoundation.org/flatiron-ins...
dfm.io
Dan F-M @dfm.io · Feb 24
I'm not on the astro lists here... Please share this there if you are. Thanks!
dfm.io
Dan F-M @dfm.io · Feb 24
Applications are open for the pre-doc program at the CCA!

This program is for current astro grad students to come visit NYC for 5 months and collaborate with a CCA scientist on a research project. I ❤️ this program so much!!

Please apply and/or share!

www.simonsfoundation.org/flatiron-ins...
dfm.io
Dan F-M @dfm.io · Feb 24
Applications are open for the pre-doc program at the CCA!

This program is for current astro grad students to come visit NYC for 5 months and collaborate with a CCA scientist on a research project. I ❤️ this program so much!!

Please apply and/or share!

www.simonsfoundation.org/flatiron-ins...
dfm.io
Dan F-M @dfm.io · Feb 19
just found a jar of jam in our cupboard with a best before date of Feb 2020. that jam really is from a different era!
Reposted by Dan F-M
blunt-comma-s.bsky.social
Are you an astronomer or aspiring astronomer wanting to improve your software engineering skills? Applications for Code/Astro 2024 are open! More info at semaphorep.github.io/codeastro/. Application is linked at the bottom of that page. Apply by Feb 16!
dfm.io
Dan F-M @dfm.io · Dec 18
I once (many years ago) followed a recipe for pesto which included "3 garlics", and I said "3 full garlics is way too much… let's start with just 1!" It was almost edible.
dfm.io
Dan F-M @dfm.io · Dec 11
Today's #AdventOfCode is coming for your Large Scale Structure research program! adventofcode.com/2023/day/11