The Structure of Magnetically Dominated Energy Extracting Black Hole Magnetospheres: Dependencies on Field Line Angular Velocity. (arXiv:1901.01275v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Thoelecke_K/0/1/0/all/0/1">Kevin Thoelecke</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Takahashi_M/0/1/0/all/0/1">Masaaki Takahashi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tsuruta_S/0/1/0/all/0/1">Sachiko Tsuruta</a>
If the inner light surface of a force-free black hole magnetosphere lies
within the ergoregion that magnetosphere can extract the black hole’s
rotational energy and transmit it to distant observers. 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. We find
that distributions that most naturally correspond to the presence of nearby
accreting matter structures also give rise to magnetosphere structures
compatible with the presence of a jet, suggesting that in practical terms black
hole energy extraction might often be coupled to jet launching. We also find
over a factor of 100 in jet-like luminosity differences that are directly
attributable to variations in magnetosphere structure and independent of black
hole spin.
If the inner light surface of a force-free black hole magnetosphere lies
within the ergoregion that magnetosphere can extract the black hole’s
rotational energy and transmit it to distant observers. 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. We find
that distributions that most naturally correspond to the presence of nearby
accreting matter structures also give rise to magnetosphere structures
compatible with the presence of a jet, suggesting that in practical terms black
hole energy extraction might often be coupled to jet launching. We also find
over a factor of 100 in jet-like luminosity differences that are directly
attributable to variations in magnetosphere structure and independent of black
hole spin.
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