Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Differential rotation from light curves – FDL ...

Avatar for Brett Morris Brett Morris
June 11, 2020
Science
0
22

Differential rotation from light curves – FDL 2020

Presentation for the FDL 2020 Heliophysics/Starspots team.

Avatar for Brett Morris

Brett Morris

June 11, 2020
Tweet

More Decks by Brett Morris

See All by Brett Morris
Interactive Data Visualization and Analysis with jdaviz – .Astronomy 12 (2023)
Avatar for Brett Morris brettmorris
0
81
Fading Memories of Magnetic Youths – WE-Heraeus-Seminar (2023)
Avatar for Brett Morris brettmorris
0
83
Benchmarks for stellar magnetic activity – ISSI 2022
Avatar for Brett Morris brettmorris
0
15
Intro to Leave One Out Cross Validation – LMU 2022
Avatar for Brett Morris brettmorris
0
97
The Stellar Variability Noise Floor – ISSI 2021
Avatar for Brett Morris brettmorris
0
94
Olin Wilson Legacy Survey (OWLS) – APO Symposium 2021
Avatar for Brett Morris brettmorris
0
15
Occulted Active Regions – NASA ExoPAG 2021
Avatar for Brett Morris brettmorris
0
14
The Solar Activity Cycle & Kepler – FDL 202
Avatar for Brett Morris brettmorris
0
22
Dissertation (2019): The Effects of Stellar Magnetic Activity and Variability on Observations of Exoplanets
Avatar for Brett Morris brettmorris
0
64

Other Decks in Science

See All in Science
People who frequently use ChatGPT for writing tasks are accurate and robust detectors of AI-generated text
Avatar for hajime kiyama rudorudo11
0
180
なぜ21は素因数分解されないのか？ - Shorのアルゴリズムの現在と壁
Avatar for Daiki Murata daimurat
0
280
あなたに水耕栽培を愛していないとは言わせない
Avatar for Mutz mutsumix
1
240
データベース08: 実体関連モデルとは?
Avatar for Y. Yamamoto trycycle
PRO
0
1k
A Guide to Academic Writing Using Generative AI - A Workshop
Avatar for Kenji Saito ks91
PRO
0
190
NASの容量不足のお悩み解決！災害対策も兼ねた「Wasabi Cloud NAS」はここがスゴイ
Avatar for Climb climbteam
1
330
AI(人工知能)の過去・現在・未来 —AIは人間を超えるのか—
Avatar for Y-h. Taguchi tagtag
PRO
0
140
Performance Evaluation and Ranking of Drivers in Multiple Motorsports Using Massey’s Method
Avatar for konakalab konakalab
0
140
Lean4による汎化誤差評価の形式化
Avatar for Kei Tsukamoto milano0017
1
420
主成分分析に基づく教師なし特徴抽出法を用いたコラーゲン-グリコサミノグリカンメッシュの遺伝子発現への影響
Avatar for Y-h. Taguchi tagtag
PRO
0
180
データベース15: ビッグデータ時代のデータベース
Avatar for Y. Yamamoto trycycle
PRO
0
430
タンパク質間相互作⽤を利⽤した⼈⼯知能による新しい薬剤遺伝⼦-疾患相互作⽤の同定
Avatar for Y-h. Taguchi tagtag
PRO
0
140

Featured

See All Featured
Intergalactic Javascript Robots from Outer Space
Avatar for Vicent Martí tanoku
273
27k
The Director’s Chair: Orchestrating AI for Truly Effective Learning
Avatar for Mike Taylor tmiket
1
94
The Cult of Friendly URLs
Avatar for Andy Hume andyhume
79
6.8k
Reality Check: Gamification 10 Years Later
Avatar for Sebastian Deterding codingconduct
0
2k
Public Speaking Without Barfing On Your Shoes - THAT 2023
Avatar for David Neal reverentgeek
1
300
Believing is Seeing
Avatar for Spiro Bolos oripsolob
1
48
Tips & Tricks on How to Get Your First Job In Tech
Avatar for Honza Javorek honzajavorek
0
430
Agile that works and the tools we love
Avatar for Rasmus Luckow-Nielsen rasmusluckow
331
21k
A Modern Web Designer's Workflow
Avatar for Chris Coyier chriscoyier
698
190k
Done Done
Avatar for chrislema chrislema
186
16k
Typedesign – Prime Four
Avatar for Hannes Fritz hannesfritz
42
2.9k
The Web Performance Landscape in 2024 [PerfNow 2024]
Avatar for Tammy Everts tammyeverts
12
1k

Transcript

  1. Differential rotation from light curves Brett Morris Universität Bern

  2. Galileo (1612)

  3. Spot latitudes and spot evolution encode information.

  4. NASA SDO

  5. Solar activity cycle Morris+ 2019

  6. None

  7. Light curves have amplitudes and periods

  8. TESS Light Curve (days) Morris+ 2020 (in prep)

  9. Morris 2020

  10. Light Curve Inferred Fractional Spot Coverage f s Inferred Spot

    Map Morris 2020

  11. Differential rotation and spot evolution produce similar effects on light

    curves.
  12. None

  13. Real spots have lifetimes similar to the rotation period.

  14. None

  15. Challenges to measuring stellar differential rotation from light curves •

    The periodic signal we’re trying to measure only lasts one cycle, so harmonic analyses fail • Spot evolution and differential rotation are happening at the same time • We don’t know stellar inclinations in general