Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
 
 
DownloadE-Mail
 Lokale TagsFreigabegeschichteDetailsÜbersicht
  Magnetic Field Dependence of Bipolar Magnetic Region Tilts on the Sun: Indication of Tilt Quenching

Jha, B. K., Karak, B. B., Mandal, S., & Banerjee, D. (2020). Magnetic Field Dependence of Bipolar Magnetic Region Tilts on the Sun: Indication of Tilt Quenching. The Astrophysical Journal Letters, 889(1): L19. doi:10.3847/2041-8213/ab665c.

Item is

 

einblenden: alle ausblenden: alle

Basisdaten

einblenden: ausblenden:
Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0006-F551-A Versions-Permalink: https://hdl.handle.net/21.11116/0000-0006-F552-9
Genre: Zeitschriftenartikel

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Jha, Bibhuti Kumar, Autor
Karak, Bidya Binay, Autor
Mandal, Sudip1, Autor
Banerjee, Dipankar, Autor
Affiliations:
1Max Planck Institute for Solar System Research, Max Planck Society, Justus-von-Liebig-Weg 3, 37077 Göttingen, DE, ou_1125546              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: The tilt of the bipolar magnetic region (BMR) is crucial in the Babcock–Leighton process for the generation of the poloidal magnetic field in the Sun. Based on the thin flux-tube model of the BMR formation, the tilt is believed to be caused by the Coriolis force acting on the rising flux tube of the strong toroidal magnetic field from the base of the convection zone. We analyze the magnetic field dependence of BMR tilts using the magnetograms of the Michelson Doppler Imager (1996–2011) and Helioseismic and Magnetic Imager (2010–2018). We observe that the distribution of the maximum magnetic field (B max) of BMRs is bimodal. Its first peak at the low field corresponds to BMRs that do not have sunspots as counterparts in the white-light images, whereas the second peak corresponds to sunspots as recorded in both type of images. We find that the slope of Joy's law (γ 0) initially increases slowly with the increase of B max. However, when B max gsim 2 kG, γ 0 decreases. Scatter of the BMR tilt around Joy's law systematically decreases with the increase of B max. The decrease of observed γ 0 with B max provides a hint to a nonlinear tilt quenching in the Babcock–Leighton process. We finally discuss how our results may be used to make a connection with the thin flux-tube model.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2020
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.3847/2041-8213/ab665c
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: The Astrophysical Journal Letters
  Andere : Astrophys. J. Lett.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Chicago, IL : University of Chicago Press for the American Astronomical Society
Seiten: - Band / Heft: 889 (1) Artikelnummer: L19 Start- / Endseite: - Identifikator: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215