An interesting post for our new paper.

We infer the initial density profile of the dark matter halo of the Galaxy from the Gaia rotation curve, assessing the adiabatic compression that would be induced by plausible baryonic mass models. The data want a primordial halo with a core & rapid outer fall-off, unlike NFW as expected in LCDM.

Here is the press release.

Please check the great summary of our new paper, inferring the primordial dark matter halos from observations.

New press release about our new paper led by my PhD student Mariana Pouseiro Júlio! 🔭🧪☄️ English version here: www.aip.de/en/news/dark...

Paper day! My PhD student Mariana Júlio, with @readdark.bsky.social, @pengfeili.bsky.social and others, studies the internal dynamics of dwarf galaxies and finds they don't agree with the Radial Acceleration Relation, challenging the dark matter alternative MOND. arxiv.org/abs/2510.06905 🔭☄️🧪 1/7

Jamie‘s new Nature Astronomy paper on how M31‘s satellite galaxy system is much more asymmetric than typically expected from cosmological simulations is now out on the arXiv, too. 🔭 arxiv.org/abs/2504.08047

#Paperday New paper accepted by A&A on the mass measurements and comparisons for eROSITA clusters is available at arxiv.org/abs/2411.09735. One result that might be particularly useful is the spatially resolved mass-velocity dispersion relation. A thread summarizes the paper.

Now out: Episode 3 of the dwarf galaxies and cosmology video series produced by AIP PhD students Mariana P. Júlio and Jamie K. Kanehisa. This one interviews Paris Observatory's Yanbin Yang and AIP's Humboldt Fellow @pengfeili.bsky.social on the topic of Dark Matter. www.youtube.com/watch?v=Z6IU...

Check out Ep2 of the interview series on dwarf galaxies, the Local Group & cosmology, shot at our IAU symposium. 🔭🧪 This one interviews the fantastic Tony Sohn about measuring the motion of galaxies. Produced by AIP PhD students J.K. Kanehisa & M.P. Júlio [email protected] youtu.be/vTAbQw78GIE

Want to learn about astrophysics from international experts? 🔭🧪 Check out this new series of interviews shot at our IAU Symposium #IAUS379. The first video on "Dwarf Galaxies" featuring the fantastic @runningastronomer.bsky.social is online now (next one in January): www.youtube.com/watch?v=iQJI...