Variation of Small-Scale Solar Magnetic Fields with Hinode
Abstract
Since 2008 the Hinode spacecraft has been taking monthly synoptic high-resolution spectropolarimetric observations of the central meridian of the Sun. This data provides routine observations of small-scale magnetism from pole to pole. In this project we search this unique dataset for variation of the small-scale magnetic field from one solar minimum to the next. By doing so, we investigate whether the small-scale magnetism varies in the same time scales as the large-scale magnetic field, which is still an unanswered question. Our future goal is to establish a connection between the large-scale solar dynamo on local dynamo action, which is shown in simulations. As of now, we have a magnetic butterfly diagram covering the period from June 2008 to March 2020. The multi-scale connection could have consequences for the overall magnetic behavior of the Sun during periods of extended low activity such as the Maunder Minimum of 1645-1715, and on the solar irradiance and Earth climate during these periods.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2020
- Bibcode:
- 2020AGUFMSH006..07R
- Keywords:
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- 7522 Helioseismology;
- SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY;
- 7524 Magnetic fields;
- SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY;
- 7536 Solar activity cycle;
- SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY;
- 7924 Forecasting;
- SPACE WEATHER