Category Archives: Magnetic Field
87. Magnetic Reconnection at the Earliest Stage of Solar Flux Emergence
85. A Statistical Comparison between Photospheric Vector Magnetograms Obtained by SDO/HMI and Hinode/SP
84. Abrupt and Permanent Changes of the Photospheric Magnetic Field During 75 flares observed with HMI
83. Observing and modeling the poloidal and toroidal fields of the solar dynamo
82. A Super-Synoptic Map of HMI Flux Density
81. The Dipole, Quadrupole, and Octupole Components of the Solar Magnetic Field Over 22 Years
79. Homologous Circular-Ribbon Flares Driven by Twisted Flux Emergence
71. Critical Height of the Torus Instability in Two-Ribbon Solar Flares
70. Magnetic Flux Emergence & Decay Rates for Sunspots Observed with HMI
We quantify the emergence and decay rates of ten bipolar active regions using vector magnetic field data from HMI. Our results, placed in context with other observational and modeling results in the literature, confirm a trend that higher flux regions emerge faster and the rate is dependent on the total flux of that region.