Enhanced Joule Heating in Umbral Dots
Chandan Joshi, Lokesh Bharti, S.N.A. Jaaffrey
TL;DR
This paper investigates the magnetic profiles of umbral dots, including azimuthal components, to understand their impact on Joule heating and brightness variations within sunspot umbrae.
Contribution
It introduces the analysis of azimuthal magnetic components in UDs, revealing their role in enhancing Joule heating and brightness near the circumference.
Findings
Azimuthal magnetic component influences Joule heating in UDs.
Enhanced Joule heating explains brightness variations in UDs.
Magnetic profiles are more complex than previously modeled.
Abstract
We present a study of magnetic profiles of umbral dots (UDs) and its consequences on the Joule heating mechanisms. Hamedivafa (2003) studied Joule heating using vertical component of magnetic field. In this paper UDs magnetic profile has been investigated including the new azimuthal component of magnetic field which might explain the relatively larger enhancement of Joule heating causing more brightness near circumference of UD.
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Taxonomy
TopicsMagnetic Bearings and Levitation Dynamics · Scientific Research and Discoveries · Semiconductor Quantum Structures and Devices