2019/01/04 by Kevin Thoelecke, Thoelecke, Kevin, Masaaki Takahashi +3
Engineering · Physics and Astronomy · #Astrophysical Phenomena and Observations #FOS: Physical sciences #Geophysics and Sensor Technology #High Energy Astrophysical Phenomena (astro-ph.HE) #Particle Accelerators and Free-Electron Lasers #astro-ph.HE
paper · pdf · doi:10.48550/arxiv.1901.01275
Updated to accepted version
openalex publication_date 2019/01/04 · arxiv created 2019/08/03 · arxiv updated 2019/08/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
If a magnetically dominated magnetosphere is to extract a black hole's rotational energy and transmit it to distant regions, then the inner light surface of that magnetosphere must lie within the ergoregion. That inner light surface condition limits the angular velocity of magnetic field lines. We take the distribution of magnetic field line angular velocity on the horizon to be a useful proxy for inner light surface location and study how different distributions affect the structure of energy-extracting magnetospheres. Within magnetospheres that exhibit differential field line bending towards both the azimuthal axis and the equatorial plane, we find that the total Poynting flux energy directed outward along the azimuthal axis can vary by over a factor of 100 for a single value of black hole spin.