Where are the solar magnetic poles? Adur Pastor Yabar (apastor@iac.es) 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
INTRODUCTION 4th SOLARNET meeting; A. Pastor Yabar 3
Introduction 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 4th SOLARNET meeting; A. Pastor Yabar 4
Introduction 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 4th SOLARNET meeting; A. Pastor Yabar 5
Introduction 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 4th SOLARNET meeting; A. Pastor Yabar 6
Introduction 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 4th SOLARNET meeting; A. Pastor Yabar 7
DATA & PROCEDURE 4th SOLARNET meeting; A. Pastor Yabar 8
Data & procedure HMI@SDO Magnetograms: Data Since 2010 FeI 6173Å Full Disk Spatial Resolution 1" 4th SOLARNET meeting; A. Pastor Yabar 9
Data & procedure MOVIE 1 4th SOLARNET meeting; A. Pastor Yabar 10
RESULTS 4th SOLARNET meeting; A. Pastor Yabar 11
Results 4th SOLARNET meeting; A. Pastor Yabar 12
Results 4th SOLARNET meeting; A. Pastor Yabar 13
Results 4th SOLARNET meeting; A. Pastor Yabar 14
Results 4th SOLARNET meeting; A. Pastor Yabar 15
Results 4th SOLARNET meeting; A. Pastor Yabar 16
Results 4th SOLARNET meeting; A. Pastor Yabar 17
Results 4th SOLARNET meeting; A. Pastor Yabar 18
Results Equations Of A Dipole Oblique Rotator: Take Into Account B0 Differential Rotation 4th SOLARNET meeting; A. Pastor Yabar 19
Results MOVIE 2 4th SOLARNET meeting; A. Pastor Yabar 20
Results 4th SOLARNET meeting; A. Pastor Yabar 21
Results 4th SOLARNET meeting; A. Pastor Yabar 22
CONCLUSIONS 4th SOLARNET meeting; A. Pastor Yabar 23
Conclusions 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 4th SOLARNET meeting; A. Pastor Yabar 24
Conclusions 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 4th SOLARNET meeting; A. Pastor Yabar 25
Conclusions 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 4th SOLARNET meeting; A. Pastor Yabar 26
Conclusions 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 4th SOLARNET meeting; A. Pastor Yabar 27
All transition images are courtesy of SDO team THANKS! 4th SOLARNET meeting; A. Pastor Yabar