Galaxies on FIRE (Feedback In Realistic Environments): Stellar Feedback Explains Cosmologically Inefficient Star Formation · HackerPapers discussions

Galaxies on FIRE (Feedback In Realistic Environments): Stellar Feedback Explains Cosmologically Inefficient Star Formation — mentioned by privong

Fri, 09 Sep 2016 11:58:34 GMT

> Can somebody who knows about this tell me how much of the novelty in this is CS and how much physics? It's a little bit of both. Over the past 5–8 years, some new numerical techniques ("moving mesh") have been developed (or at least first applied in astronomy) for hydrodynamic simulations[0,1]. These new techniques do a much better job of handling fluid instabilities, which can be important for properly simulating the gas in galaxies (which can have a huge range in densities and temperatures). Also, people have developed what they call "cosmological zoom" simulations. In these simulations…

Paper and discussion history. A mention is not an endorsement.

Galaxies on FIRE (Feedback In Realistic Environments): Stellar Feedback Explains Cosmologically Inefficient Star Formation — mentioned by privong

Sat, 07 Mar 2015 21:50:11 GMT

I was expecting the actual game, not just a video about it, but it does look interesting. It's also worth noting that much of what is included in the game is still actively being researched. For example, we don't really know, in detail, how vigorous star formation affects the gas in galaxies – is it expelled, stirred up, removed from the system, or some combination? And what processes (supernovae, stellar winds, radiation pressure, etc.) drive that? I think we are getting close to the answers[0, 1], but it's an exciting time. [0] http://arxiv.org/abs/1311.2073 [1]…

Paper and discussion history. A mention is not an endorsement.