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
19

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
70
Fading Memories of Magnetic Youths – WE-Heraeus-Seminar (2023)
Avatar for Brett Morris brettmorris
0
71
Benchmarks for stellar magnetic activity – ISSI 2022
Avatar for Brett Morris brettmorris
0
12
Intro to Leave One Out Cross Validation – LMU 2022
Avatar for Brett Morris brettmorris
0
77
The Stellar Variability Noise Floor – ISSI 2021
Avatar for Brett Morris brettmorris
0
78
Olin Wilson Legacy Survey (OWLS) – APO Symposium 2021
Avatar for Brett Morris brettmorris
0
11
Occulted Active Regions – NASA ExoPAG 2021
Avatar for Brett Morris brettmorris
0
12
The Solar Activity Cycle & Kepler – FDL 202
Avatar for Brett Morris brettmorris
0
8
Dissertation (2019): The Effects of Stellar Magnetic Activity and Variability on Observations of Exoplanets
Avatar for Brett Morris brettmorris
0
46

Other Decks in Science

See All in Science
Quelles valorisations des logiciels vers le monde socio-économique dans un contexte de Science Ouverte ?
Avatar for BlueHats bluehats
1
390
ほたるのひかり/RayTracingCamp10
Avatar for kugi kugimasa
1
710
トラブルがあったコンペに学ぶデータ分析
Avatar for tereka114 tereka114
2
1.6k
白金鉱業Meetup Vol.16_数理最適化案件のはじめかた・すすめかた
Avatar for BrainPad brainpadpr
3
1.8k
観察研究における因果推論
Avatar for NearMeの技術発表資料です nearme_tech
PRO
1
260
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？
Avatar for Jimpei jimpe_hitsuwari
0
140
生成AIと学ぶPythonデータ分析再入門－Pythonによるクラスタリング・可視化をサクサク実施－
Avatar for The Japan DataScientist Society datascientistsociety
PRO
4
1.6k
Machine Learning for Materials (Challenge)
Avatar for Aron Walsh aronwalsh
0
290
データベース08: 実体関連モデルとは?
Avatar for Y. Yamamoto trycycle
PRO
0
660
A Guide to Academic Writing Using Generative AI - A Workshop
Avatar for Kenji Saito ks91
PRO
0
100
機械学習 - ニューラルネットワーク入門
Avatar for Y. Yamamoto trycycle
PRO
0
780
Agent開発フレームワークのOverviewとW&B Weaveとのインテグレーション
Avatar for W&B Si siyoo
0
250

Featured

See All Featured
Become a Pro
Avatar for Speaker Deck speakerdeck
PRO
28
5.4k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
Avatar for Tammy Everts tammyeverts
4
200
The Art of Programming - Codeland 2020
Avatar for Erika Heidi erikaheidi
54
13k
Stop Working from a Prison Cell
Avatar for Chris Michel hatefulcrawdad
270
20k
Optimizing for Happiness
Avatar for Tom Preston-Werner mojombo
379
70k
Side Projects
Avatar for Sacha Greif sachag
455
42k
jQuery: Nuts, Bolts and Bling
Avatar for Doug Neiner dougneiner
63
7.8k
[RailsConf 2023 Opening Keynote] The Magic of Rails
Avatar for Eileen M. Uchitelle eileencodes
29
9.5k
Building Applications with DynamoDB
Avatar for Matt Wood mza
95
6.5k
The Art of Delivering Value - GDevCon NA Keynote
Avatar for David Neal reverentgeek
15
1.5k
Music & Morning Musume
Avatar for Bryan Veloso bryan
46
6.6k
How to Ace a Technical Interview
Avatar for Jacob Kaplan-Moss jacobian
277
23k

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