Lachlan Lancaster
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All research
June, 2021
Efficiently Cooled Stellar Wind Bubbles

In the middle of April, 2021 I posted the first two major works of my thesis outlining a new theory for the expansion of stellar wind bubbles from clusters of massive stars in dense, turbulent molecular clouds (the sorts of places where these massive stars form). They are now published in the Astrophysical Journal. You can find an abridged explanation of these papers in a Twitter thread I wrote when I posted them.

September, 2020
A Mystery in Chamaeleon

In March of 2019 I was observing at Las Campanas Observatory in Chile. I was there part of a research plan looking for exceptionally strange objects. When you go looking for strange things, you end up finding some, not necessarily the type you were looking for.

January, 2020
Dynamical Friction when Dark Matter is Fuzzy

Dynamical Friction is the strange process by which a massive body, moving through a 'sea' of lighter particles in space, creates a 'wake' of the lighter particles. That wake, formed through gravity, then gravitationally pulls on the massive body, slowing it down. We investigated how this process worked in a universe where dark matter behaves quantum mechanically.

June, 2019
Orbit's in the Milky Way's Stellar Halo

The European Space Agency's Gaia Satellite has given us the first real picture of our Galaxy in motion. We used this excellent data to reveal the Milky Way's complicated past of galactic cannibalism.

April, 2019
Correlation Functions and Hidden Structure

When looking for small signals of the much-obscured past of the Milky Way's formation, it helps to use statistics. We investigate what correlation functions can tell us about the hidden structure in the stellar halo of our Galaxy.

July, 2017
Neutrino Physics and Cosmology

When you are looking for changes to the physics of very weakly-interacting particles, you have to look for evidence on the largest scales.