Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
the Milky Way is a messy eater
Search
Adrian Price-Whelan
April 09, 2013
Science
0
73
the Milky Way is a messy eater
Adrian Price-Whelan
April 09, 2013
Tweet
Share
More Decks by Adrian Price-Whelan
See All by Adrian Price-Whelan
the Astropy project - Flatware
adrn
1
230
the dynamic Milky Way in the Gaia era
adrn
1
200
The Astropy Project
adrn
1
120
Git and version control
adrn
1
120
Chaos and stellar streams
adrn
1
180
Software testing
adrn
0
200
Local Group Astrostatistics
adrn
1
88
100% Outer Space
adrn
1
160
SMHASH telecon 03/2015
adrn
0
100
Other Decks in Science
See All in Science
動的トリートメント・レジームを推定するDynTxRegimeパッケージ
saltcooky12
0
160
3次元点群を利用した植物の葉の自動セグメンテーションについて
kentaitakura
2
1.3k
メール送信サーバの集約における透過型SMTP プロキシの定量評価 / Quantitative Evaluation of Transparent SMTP Proxy in Email Sending Server Aggregation
linyows
0
940
機械学習 - K近傍法 & 機械学習のお作法
trycycle
PRO
0
1.2k
Lean4による汎化誤差評価の形式化
milano0017
1
250
06_浅井雄一郎_株式会社浅井農園代表取締役社長_紹介資料.pdf
sip3ristex
0
520
ガウス過程回帰とベイズ最適化
nearme_tech
PRO
1
450
眼科AIコンテスト2024_特別賞_6位Solution
pon0matsu
0
420
データマイニング - ノードの中心性
trycycle
PRO
0
130
データベース11: 正規化(1/2) - 望ましくない関係スキーマ
trycycle
PRO
0
680
How To Buy, Verified Venmo Accounts in 2025 This year
usaallshop68
2
130
CV_3_Keypoints
hachama
0
190
Featured
See All Featured
Site-Speed That Sticks
csswizardry
10
690
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
48
2.9k
Adopting Sorbet at Scale
ufuk
77
9.5k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
53
2.9k
A Tale of Four Properties
chriscoyier
160
23k
How to Ace a Technical Interview
jacobian
278
23k
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
eileencodes
35
2.4k
Designing for Performance
lara
610
69k
[RailsConf 2023] Rails as a piece of cake
palkan
55
5.7k
Building a Modern Day E-commerce SEO Strategy
aleyda
42
7.4k
Making Projects Easy
brettharned
116
6.3k
The World Runs on Bad Software
bkeepers
PRO
69
11k
Transcript
The Milky Way is a messy eater. The Milky Way
is a messy eater. Adrian Price-Whelan (Columbia University)
The Milky Way
The Milky Way Disk
The Milky Way Disk Spheroid
None
The Milky Way Disk
The Milky Way Disk Spheroid
The Milky Way Disk Spheroid You are here
The Milky Way Halo
Dark Matter
Dark Matter F = ma
Dark Matter F = ma Force = mass x acceleration
Dark Matter F = ma Force = mass x acceleration
GM1M2 r2 Gravity
Dark Matter F = ma Force = mass x acceleration
GM1M2 r2 Gravity Circular motion = M1⇥ v2 r
Dark Matter F = ma Force = mass x acceleration
GM1M2 r2 e.g. M2 could be the mass of the Sun M1 could be the mass of a planet Gravity Circular motion = M1⇥ v2 r r M1 M2
Dark Matter F = ma Force = mass x acceleration
GM1M2 r2 Gravity Circular motion = M1⇥ v2 r r M1 M2
Dark Matter F = ma Force = mass x acceleration
GM1M2 r2 Gravity Circular motion = M1⇥ v2 r r M1 M2
Dark Matter F = ma Force = mass x acceleration
GM1M2 r2 Gravity Circular motion = M1⇥ v2 r r M1 M2
Dark Matter F = ma Force = mass x acceleration
GM1M2 r2 Gravity Circular motion = M1⇥ v2 r r M1 M2 v / r 1 r
Dark Matter v / r 1 r v r
Dark Matter v / r 1 r Predicted v r
Dark Matter v / r 1 r Predicted v r
Dark Matter v / r 1 r Predicted v r
Dark Matter v / r 1 r Predicted v r
Observed
Dark Matter v / r 1 r Predicted v r
Observed
Dark Matter v / r 1 r Predicted Dark Matter!
v r Observed
None
None
None
None
We can use the orbits of streams to learn about
dark matter!
None
In the neighborhood •What would one of these streams look
like from the inside?
In the neighborhood •What would one of these streams look
like from the inside?
None
None
Questions?