Exploring the Milky Way with astropy, matplotlib and Gaia¶
A story with no beginning
A time and a place when everything started?
Johnny Gill¶
Exploring the Geometry of the Universe.
Workshop: Introduction to the Geometry of the Universe¶
Learn how to download JWST and other astronomical data.
Provide a guide to the key ideas in the Geometry of the Universe.
Explore gotu.gaia and healpy to visualise the Milky Way.
blume.table and how to make the magic carpet magic
Explore gotu using blume.
Thanks¶
python¶
PyCon
PyCon Ireland
Europython 2022, Dublin¶
The first pictures from James Webb arrived during the conference, good times ahead for cosmologists. The first picture I saw of M74.
A Gilectomy keynote. No longer does python without the GIL slow down. A delightful talk on the problem of tracking references in a fully multi-threaded world.
People working on pyiodide, I have decided to explore this project more directly.
During the sprint I managed to get gotu.gaia limping along again. I really need to unify wits and gaia.
I am starting a gotu.jwst module. The plan is to be able to explore the data behind some of the incredible images the space telescope is giving us.
matplotlib¶
Dublin, 2003
astropy¶
Units
Constants
Coordinates
Cosmology
astroquery, tables
Personal Projects¶
karmapi, 2016¶
Tools to record and display data from raspberry pi’s with sensehats and cameras.
Personal toolkit for viewing things with matplotlib.
2017, A New Paradigm for the Universe
blume, 2019¶
Better Looking Universal Matplotlib Engine
A quest for a universal table
gotu, 2021¶
The Geometry of the Universe
A geometric model for the universe with no need for dark matter or dark energy.
What if the big bang did not happen?¶
What if galaxies are very much older than 13.7 billion years?
Copernicus¶
The Perfect Copernican Principle:
There should be no special times or places in the Universe.
A story with no beginning
A time and a place when everything started?
Fred Hoyle¶
Fred Hoyle coined the term Big Bang.
Believed in an essentially static universe.
One atom appearing in each skyscraper sized volume of space per year would balance the expansion.
Colin Rourke¶
Emeritus Professor of Mathematics at Warwick University.
No need for dark matter.
Sagittarius A* is too small to drive the Milky Way!
The Sciama Principle can explain galactic rotation curves without need for dark matter.
de Sitter space is a space-time which exhibits redshift, but has no overall expansion.
Bayes Theorem¶
What are your priors ignoring?
Sagittarius A*¶
Most observed black hole.
4.2 million solar masses.
Black Holes: gotu.spiral.Spiral()
Gaia and wits¶
Where is the Sun?
Can Gaia help answer this question?
What does the Milky Way rotation curve look like?
Spanish Dancer¶
Solar System Rotation Curve¶
Milky Way Rotation Curves¶
Xaowei Ou paper.
Tangential velocities beyond 25kpc from the galactic centre are lower than expected.
Milky Way Rotation Curve from Gaia¶
Sciama Principle, Denis Sciama, 1953¶
On the origin of inertia.
A mass
with angular velocity
induces a rotation of:
at a distance
from the centre of the mass.
Simulation using Gaia data¶
Introduction to the Geometry of the Universe¶
It’s a big subject ;)
blume
gotu.jwst
gotu.gaia
gotu.spiral
Dark Energy Survey¶
distance and redshift, Hubble Tension¶
Laniakae Supercluster¶
