Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/7339
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dc.contributor.authorKarak, B. B-
dc.contributor.authorMiesch, Mark S-
dc.date.accessioned2018-08-08T08:19:19Z-
dc.date.available2018-08-08T08:19:19Z-
dc.date.issued2018-06-20-
dc.identifier.citationThe Astrophysical Journal Letters, Vol. 860, No. 2, L26en_US
dc.identifier.issn2041-8205-
dc.identifier.urihttp://hdl.handle.net/2248/7339-
dc.descriptionRestricted Accessen_US
dc.description.abstractThe Sun occasionally goes through Maunder-like extended grand minima when its magnetic activity drops considerably from the normal activity level for several decades. Many possible theories have been proposed to explain the origin of these minima. However, how the Sun managed to recover from such inactive phases every time is even more enigmatic. The Babcock–Leighton type dynamos, which are successful in explaining many features of the solar cycle remarkably well, are not expected to operate during grand minima due to the lack of a sufficient number of sunspots. In this Letter, we explore the question of how the Sun could recover from grand minima through the Babcock–Leighton dynamo. In our three-dimensional dynamo model, grand minima are produced spontaneously as a result of random variations in the tilt angle of emerging active regions. We find that the Babcock–Leighton process can still operate during grand minima with only a minimal number of sunspots, and that the model can emerge from such phases without the need for an additional generation mechanism for the poloidal field. The essential ingredient in our model is a downward magnetic pumping, which inhibits the diffusion of the magnetic flux across the solar surface.en_US
dc.language.isoenen_US
dc.publisherIOP Publishingen_US
dc.relation.urihttps://doi.org/10.3847/2041-8213/aaca97-
dc.rights© The American Astronomical Society-
dc.subjectDynamoen_US
dc.subjectMagnetohydrodynamics (MHD)en_US
dc.subjectSun: activityen_US
dc.subjectSun: interioren_US
dc.subjectSun: magnetic fieldsen_US
dc.subjectSunspotsen_US
dc.titleRecovery from Maunder-like Grand Minima in a Babcock–Leighton Solar Dynamo Modelen_US
dc.typeArticleen_US
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