Where are the solar magnetic poles? - · PDF fileWhere are the solar magnetic poles? ......

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Where are the solar magnetic poles? Adur Pastor Yabar ([email protected]) María Jesús Martínez González Manuel Collados Vera Instituto de Astrofísica de Canarias Universidad de La Laguna

Transcript of Where are the solar magnetic poles? - · PDF fileWhere are the solar magnetic poles? ......

Where are the solar magnetic

poles?

Adur Pastor Yabar ([email protected])

María Jesús Martínez González Manuel Collados Vera

Instituto de Astrofísica de Canarias Universidad de La Laguna

OUTLINE

•  Introduction • Data & procedure •  Results •  Conclusion

4th SOLARNET meeting; A. Pastor Yabar 2 January 16-20, 2017

INTRODUCTION

4th SOLARNET meeting; A. Pastor Yabar 3 January 16-20, 2017

Introduction

4th SOLARNET meeting; A. Pastor Yabar 4 January 16-20, 2017

•  Babcock & Babcock 1955: §  They Discovered the Presence of a

Dominant Polarity at the Polar Caps §  The Sign of This Magnetic Signal at Each

Pole is of Opposite Polarity •  Babcock 1959:

§  The Dominant Polarity at Each Polar Region Reversed Their Polarity in a Maximum of Activity

Introduction

4th SOLARNET meeting; A. Pastor Yabar 5 January 16-20, 2017

•  Babcock & Babcock 1955: §  They Discovered the Presence of a

Dominant Polarity at the Polar Caps §  The Sign of This Magnetic Signal at Each

Pole is of Opposite Polarity •  Babcock 1959:

§  The Dominant Polarity at Each Polar Region Reversed Their Polarity in a Maximum of Activity

Introduction

4th SOLARNET meeting; A. Pastor Yabar 6 January 16-20, 2017

•  Babcock & Babcock 1955: §  They Discovered the Presence of a

Dominant Polarity at the Polar Caps §  The Sign of This Magnetic Signal at Each

Pole is of Opposite Polarity •  Babcock 1959:

§  The Dominant Polarity at Each Polar Region Reversed Their Polarity in a Maximum of Activity

Introduction

4th SOLARNET meeting; A. Pastor Yabar 7 January 16-20, 2017

•  Babcock & Babcock 1955: §  They Discovered the Presence of a

Dominant Polarity at the Polar Caps §  The Sign of This Magnetic Signal at Each

Pole is of Opposite Polarity •  Babcock 1959:

§  The Dominant Polarity at Each Polar Region Reversed Their Polarity in a Maximum of Activity

DATA & PROCEDURE

4th SOLARNET meeting; A. Pastor Yabar 8 January 16-20, 2017

Data & procedure

4th SOLARNET meeting; A. Pastor Yabar 9 January 16-20, 2017

•  HMI@SDO Magnetograms: – Data Since 2010 – FeI 6173Å – Full Disk – Spatial Resolution 1"

Data & procedure

4th SOLARNET meeting; A. Pastor Yabar 10 January 16-20, 2017

MOVIE 1

RESULTS

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Results

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Results

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Results

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Results

4th SOLARNET meeting; A. Pastor Yabar 15 January 16-20, 2017

Results

4th SOLARNET meeting; A. Pastor Yabar 16 January 16-20, 2017

Results

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Results

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Results

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•  Equations Of A Dipole Oblique Rotator:

•  Take Into Account B0 •  Differential Rotation

Results

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MOVIE 2

Results

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Results

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CONCLUSIONS

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Conclusions

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•  Observational Constraint For The Theories Of Generation Of Stellar Magnetic Fields

•  Misalignment Between Rotational And Magnetic Axes

•  Misalignment Angle Between 20º To 40º. Similar To The Ones Recovered From The Interplanetary Medium (Hundhausen 1977)

•  The Sun Is No Longer A Peculiar Star

Conclusions

4th SOLARNET meeting; A. Pastor Yabar 25 January 16-20, 2017

•  Observational Constraint For The Theories Of Generation Of Stellar Magnetic Fields

•  Misalignment Between Rotational And Magnetic Axes

•  Misalignment Angle Between 20º To 40º. Similar To The Ones Recovered From The Interplanetary Medium (Hundhausen 1977)

•  The Sun Is No Longer A Peculiar Star

Conclusions

4th SOLARNET meeting; A. Pastor Yabar 26 January 16-20, 2017

•  Observational Constraint For The Theories Of Generation Of Stellar Magnetic Fields

•  Misalignment Between Rotational And Magnetic Axes

•  Misalignment Angle Between 20º To 40º. Similar To The Ones Recovered From The Interplanetary Medium (Hundhausen 1977)

•  The Sun Is No Longer A Peculiar Star

Conclusions

4th SOLARNET meeting; A. Pastor Yabar 27 January 16-20, 2017

•  Observational Constraint For The Theories Of Generation Of Stellar Magnetic Fields

•  Misalignment Between Rotational And Magnetic Axes

•  Misalignment Angle Between 20º To 40º. Similar To The Ones Recovered From The Interplanetary Medium (Hundhausen 1977)

•  The Sun Is No Longer A Peculiar Star

THANKS!

All transition images are courtesy of SDO team

4th SOLARNET meeting; A. Pastor Yabar January 16-20, 2017