Abstract Details
| Name: Soumitra Hazra Affiliation: IISER-KOLKATA Conference ID: ASI2015_504 Title : Can Flux Transport Solar Dynamo Models Function with a Shallow Meridional Flow? Authors and Co-Authors : Dibyendu Nandy, Center of Excellence in Space Sciences, IISER Kolkata Abstract Type : Oral Abstract Category : Sun and the Solar System Abstract : Kinematic dynamo models of the solar cycle that rely on magnetic flux transport processes have traditionally relied on a deep meridional flow pervading the full solar convection zone. The current understanding of the solar cycle, based not only on such dynamo models but also on flux tube dynamics simulations, is that strong toroidal flux tubes are stored and amplified in a stable layer beneath the base of the convection zone, from where they buoyantly rise to produce sunspots. However, some recent interpretations of solar meridional flow observations are along the lines that the meridional flow is shallow and remains confined to the top 10% of the Sun. Here, we explore whether flux transport dynamos could function with such a shallow meridional flow and discuss the consequences that this scenario would have on our traditional understanding of magnetic field dynamics in the solar interior. |