Lock in $30 Savings on PRO—Offer Ends Soon! ⏳

Differential rotation from light curves – FDL ...

Avatar for Brett Morris Brett Morris
June 11, 2020
Science
0
21

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
79
Fading Memories of Magnetic Youths – WE-Heraeus-Seminar (2023)
Avatar for Brett Morris brettmorris
0
81
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
95
The Stellar Variability Noise Floor – ISSI 2021
Avatar for Brett Morris brettmorris
0
91
Olin Wilson Legacy Survey (OWLS) – APO Symposium 2021
Avatar for Brett Morris brettmorris
0
14
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
16
Dissertation (2019): The Effects of Stellar Magnetic Activity and Variability on Observations of Exoplanets
Avatar for Brett Morris brettmorris
0
63

Other Decks in Science

See All in Science
DMMにおけるABテスト検証設計の工夫
Avatar for ishimura-ryota xc6da
1
1.4k
風の力で振れ幅が大きくなる振り子！？　〜タコマナローズ橋はなぜ落ちたのか〜
Avatar for Syota-Sasaki syotasasaki593876
1
160
知能とはなにかーヒトとAIのあいだー
Avatar for Y-h. Taguchi tagtag
0
160
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
0
130
Accelerating operator Sinkhorn iteration with overrelaxation
Avatar for Tasuku Soma tasusu
0
110
PPIのみを用いたAIによる薬剤–遺伝子–疾患 相互作用の同定
Avatar for Y-h. Taguchi tagtag
0
110
[Paper Introduction] From Bytes to Ideas: Language Modeling with Autoregressive U-Nets
Avatar for omoto haruumi haruumiomoto
0
170
My Little Monster
Avatar for Juzi juzishuu
0
300
凸最適化からDC最適化まで
Avatar for ざきまつ santana_hammer
1
330
HajimetenoLT vol.17
Avatar for hashimoto-kei hashimoto_kei
1
110
データベース11: 正規化(1/2) - 望ましくない関係スキーマ
Avatar for Y. Yamamoto trycycle
PRO
0
1k
MCMCのR-hatは分散分析である
Avatar for Shota Mori moricup
0
520

Featured

See All Featured
Scaling GitHub
Avatar for Zach Holman holman
464
140k
What's in a price? How to price your products and services
Avatar for Michael Herold michaelherold
246
12k
The Straight Up "How To Draw Better" Workshop
Avatar for Dennis Kardys denniskardys
239
140k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
Avatar for Kevin Liebholz kevinliebholz
36
6.2k
The Language of Interfaces
Avatar for Des Traynor destraynor
162
25k
Build The Right Thing And Hit Your Dates
Avatar for Maggie C. maggiecrowley
38
3k
Designing Experiences People Love
Avatar for Jonathan Moore moore
143
24k
Optimizing for Happiness
Avatar for Tom Preston-Werner mojombo
379
70k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
Avatar for Dan Newman danielanewman
231
22k
Statistics for Hackers
Avatar for Jake VanderPlas jakevdp
799
230k
CSS Pre-Processors: Stylus, Less & Sass
Avatar for Bermon Painter bermonpainter
359
30k
How Fast Is Fast Enough? [PerfNow 2025]
Avatar for Tammy Everts tammyeverts
3
390

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