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
Rotation Measures for Globular Cluster Pulsars ...
Search
Anna Ho
October 12, 2017
Science
0
65
Rotation Measures for Globular Cluster Pulsars at a Unique Probe of the Galactic Magnetic Field
as presented at galaxy coffee at the MPIA on 9 October 2014
Anna Ho
October 12, 2017
Tweet
Share
More Decks by Anna Ho
See All by Anna Ho
SN2018gep: The Death Throes of a Stripped Massive Star
annayqho
0
140
Diverse phenomena arise from a single engine: a history lesson from AGN unification
annayqho
0
280
AT2018cow: the poster-child explosion for high-frequency time-domain astronomy
annayqho
0
220
Cosmic Detectives: Investigating the Catastrophic Deaths of Stars
annayqho
0
69
The rotation rates of massive stars: the role of binary interaction
annayqho
0
59
Towards a complete redshift catalog for galaxies in the Local Universe
annayqho
0
66
Dirty Fireballs and Orphan Afterglows: A Broader Landscape of Stellar Death
annayqho
1
270
Towards a framework for space traffic control
annayqho
0
78
A tale of 115 photons: a new, faint population of X-ray transients
annayqho
0
99
Other Decks in Science
See All in Science
統計学入門講座 第1回スライド
techmathproject
0
340
機械学習 - 授業概要
trycycle
PRO
0
190
academist Prize 4期生 研究トーク延長戦!「美は世界を救う」っていうけど、どうやって?
jimpe_hitsuwari
0
140
学術講演会中央大学学員会府中支部
tagtag
0
270
地質研究者が苦労しながら運用する情報公開システムの実例
naito2000
0
200
科学で迫る勝敗の法則(名城大学公開講座.2024年10月) / The principle of victory discovered by science (Open lecture in Meijo Univ. 2024)
konakalab
0
350
A Guide to Academic Writing Using Generative AI - A Workshop
ks91
PRO
0
110
機械学習 - K-means & 階層的クラスタリング
trycycle
PRO
0
910
安心・効率的な医療現場の実現へ ~オンプレAI & ノーコードワークフローで進める業務改革~
siyoo
0
230
baseballrによるMLBデータの抽出と階層ベイズモデルによる打率の推定 / TokyoR118
dropout009
1
430
IWASAKI Hideo
genomethica
0
110
「美は世界を救う」を心理学で実証したい~クラファンを通じた新しい研究方法
jimpe_hitsuwari
1
130
Featured
See All Featured
The Power of CSS Pseudo Elements
geoffreycrofte
77
5.8k
The Language of Interfaces
destraynor
158
25k
Practical Orchestrator
shlominoach
188
11k
Designing Experiences People Love
moore
142
24k
The World Runs on Bad Software
bkeepers
PRO
69
11k
Gamification - CAS2011
davidbonilla
81
5.3k
A designer walks into a library…
pauljervisheath
206
24k
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
10
930
Code Reviewing Like a Champion
maltzj
524
40k
Product Roadmaps are Hard
iamctodd
PRO
54
11k
Learning to Love Humans: Emotional Interface Design
aarron
273
40k
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
3.9k
Transcript
Rota%on Measures for Globular Cluster Pulsars as a Unique
Probe of the Galac%c Magne%c Field Anna Ho Fulbright Scholar, MPIA Galaxy Coffee, 9 October 2014
Rota%on Measures for Globular Cluster Pulsars as a Unique
Probe of the Galac%c Magne%c Field 1. Measuring <B> using RotaHon Measures
Rota%on Measures for Globular Cluster Pulsars as a Unique
Probe of the Galac%c Magne%c Field 1. Measuring <B> using RotaHon Measures 2. Why pulsars in globular clusters?
Rota%on Measures for Globular Cluster Pulsars as a Unique
Probe of the Galac%c Magne%c Field 1. Measuring <B> using RotaHon Measures 2. Why pulsars in globular clusters? 3. CalculaHng pulsar rotaHon measures
Rota%on Measures for Globular Cluster Pulsars as a Unique
Probe of the Galac%c Magne%c Field 1. Measuring <B> using RotaHon Measures 2. Why pulsars in globular clusters? 3. CalculaHng pulsar rotaHon measures 4. Results: mapping <B>
Probing <B> with Rota%on Measures Faraday rota%on:
• λ-‐dependent rotaHon
Faraday rota%on: • λ-‐dependent rotaHon
Dispersion: • λ-‐dependent Hme delay Probing <B> with Rota%on Measures
Probing <B> with Rota%on Measures
Why Pulsars in Globular Clusters? Why Pulsars?
• Strong linear polarizaHon • No intrinsic Faraday rotaHon (Noutsos 2012) Why GC Pulsars? • Dense populaHons -‐> probe small-‐scale structure Terzan 5: 35 MSPs • D=5.9 kpc, l = 3.8º, b = 1.7º • 0.01-‐4 pc separaHon • Precise DMs (Ransom 2007)
Calcula%ng RM • 3 years of Green Bank
Telescope observaHons at L-‐band (1.5 GHz) and S-‐band (2 GHz) totaling > 5 days per pulsar • Least squares fit for RM: Ter5C, single phase bin RM0: 175, dRM: 1.51 +/-‐ 0.06 New RM: 176.51 +/-‐ 0.06 X2 = 1.48
Mapping <B>
None
Extra Slide: GC MSP PopulaHons
Extra Slide: GC ContribuHons
Extra Slide: Structure FuncHon