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
24

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
86
Fading Memories of Magnetic Youths – WE-Heraeus-Seminar (2023)
Avatar for Brett Morris brettmorris
0
86
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
100
The Stellar Variability Noise Floor – ISSI 2021
Avatar for Brett Morris brettmorris
0
98
Olin Wilson Legacy Survey (OWLS) – APO Symposium 2021
Avatar for Brett Morris brettmorris
0
16
Occulted Active Regions – NASA ExoPAG 2021
Avatar for Brett Morris brettmorris
0
16
The Solar Activity Cycle & Kepler – FDL 202
Avatar for Brett Morris brettmorris
0
30
Dissertation (2019): The Effects of Stellar Magnetic Activity and Variability on Observations of Exoplanets
Avatar for Brett Morris brettmorris
0
67

Other Decks in Science

See All in Science
データマイニング - グラフ埋め込み入門
Avatar for Y. Yamamoto trycycle
PRO
1
190
(2025) Balade en cyclotomie
Avatar for Roger Mansuy mansuy
0
520
NDCG is NOT All I Need
Avatar for statditto statditto
2
2.9k
KISHIMOTO Atsuo
Avatar for Genomethica genomethica
0
110
Accelerating operator Sinkhorn iteration with overrelaxation
Avatar for Tasuku Soma tasusu
0
240
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
340
Celebrate UTIG: Staff and Student Awards 2025
Avatar for University of Texas Institute for Geophysics utig
0
1.3k
高校生就活へのDA導入の提案
Avatar for Shunya Noda shunyanoda
1
6.3k
My Little Monster
Avatar for Juzi juzishuu
0
690
コンピュータビジョンによるロボットの視覚と判断：宇宙空間での適応と課題
Avatar for Hironobu Fujiyoshi hf149
1
580
20251212_LT忘年会_データサイエンス枠_新川.pdf
Avatar for shinpsan shinpsan
0
260
防災デジタル分野での官民共創の取り組み (1)防災DX官民共創をどう進めるか
Avatar for Masakatsu Sugii ditccsugii
0
570

Featured

See All Featured
Paper Plane
Avatar for Katie Cordina Lindsey katiecoart
PRO
0
48k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
Avatar for Michelle Schulp Hunt marktimemedia
31
2.7k
Ruling the World: When Life Gets Gamed
Avatar for Sebastian Deterding codingconduct
0
180
The Language of Interfaces
Avatar for Des Traynor destraynor
162
26k
KATA
Avatar for Megan Lloyd mclloyd
PRO
35
15k
Paper Plane (Part 1)
Avatar for Katie Cordina Lindsey katiecoart
PRO
0
5.8k
The Art of Programming - Codeland 2020
Avatar for Erika Heidi erikaheidi
57
14k
A Modern Web Designer's Workflow
Avatar for Chris Coyier chriscoyier
698
190k
SEO in 2025: How to Prepare for the Future of Search
Avatar for Michael King ipullrank
3
3.4k
Design in an AI World
Avatar for tapps tapps
0
180
エンジニアに許された特別な時間の終わり
Avatar for watany watany
106
240k
From Legacy to Launchpad: Building Startup-Ready Communities
Avatar for Dug Song dugsong
0
180

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