Výsledky vyhledávání - "Hankla, Amelia"

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Late-time radio brightening and emergence of a radio jet in the changing-look AGN 1ES 1927+654

We present multi-frequency (5-345 GHz) and multi-resolution radio observations of 1ES 1927+654, widely considered one of the most unusual and extreme changing-look active galactic nuclei (CL-AGN). The source was first designated a CL-AGN after an opt

Externí odkaz: http://arxiv.org/abs/2406.18061

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Nonthermal emission from the plunging region: a model for the high-energy tail of black hole X-ray binary soft states

Autor: Hankla, Amelia, Scepi, Nicolas, Dexter, Jason

X-ray binaries exhibit a soft spectral state comprising thermal blackbody emission at 1 keV and a power-law tail above 10 keV. Empirical models fit the high-energy power-law tail to radiation from a nonthermal electron distribution, but the physical

Externí odkaz: http://arxiv.org/abs/2206.12018

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Kinetic Simulations of Imbalanced Turbulence in a Relativistic Plasma: Net Flow and Particle Acceleration

Autor: Hankla, Amelia, Zhdankin, Vladimir, Werner, Gregory, Uzdensky, Dmitri, Begelman, Mitchell

Turbulent high-energy astrophysical systems often feature asymmetric energy injection: for instance, Alfven waves propagating from an accretion disk into its corona. Such systems are "imbalanced": the energy fluxes parallel and anti-parallel to the l

Externí odkaz: http://arxiv.org/abs/2108.13940

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Local Simulations of Heating Torques on a Luminous Body in an Accretion Disk

Autor: Hankla, Amelia, Jiang, Yan-Fei, Armitage, Philip

A luminous body embedded in an accretion disk can generate asymmetric density perturbations that lead to a net torque and thus orbital migration of the body. Linear theory has shown that this heating torque gives rise to a migration term linear in th

Externí odkaz: http://arxiv.org/abs/2005.03785

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