Search Results for author: Alexander G. Kosovichev

Found 4 papers, 1 papers with code

Predicting the Emergence of Solar Active Regions Using Machine Learning

no code implementations14 Feb 2024 Spiridon Kasapis, Irina N. Kitiashvili, Alexander G. Kosovichev, John T. Stefan, Bhairavi Apte

To create early warning capabilities for upcoming Space Weather disturbances, we have selected a dataset of 61 emerging active regions, which allows us to identify characteristic features in the evolution of acoustic power density to predict continuum intensity emergence.

Evolution of Subsurface Zonal and Meridional Flows in Solar Cycle 24 from Helioseismological Data

no code implementations31 Dec 2020 Alexander V. Getling, Alexander G. Kosovichev, Junwei Zhao

The oscillation period is comparable with a doubled solar-activity-cycle and can be described as an extended solar cycle.

Solar and Stellar Astrophysics

Analysis of Time-Distance Helioseismology for Detection of Emerging Active Regions

no code implementations2 Dec 2020 John T. Stefan, Alexander G. Kosovichev, Andrey M. Stejko

The technique is also used to examine pre-emergence signatures of several active regions observed by the Michelson Doppler Imager (MDI) and the Helioseismic Magnetic Imager (HMI).

Solar and Stellar Astrophysics

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