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R. P. Fender

As seen in: Nature
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Articles by R. P. Fender

A self-shadowing black hole accretion disk at sub-Eddington luminosities

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By M. Armas Padilla, T. Munoz-Darias, J. Sánchez-Sierras, D. Sanchez, E. A. Saavedra, A. Ambrifi, M. C. Baglio, J. Casares, R. P. Fender, J. A. Fernández-Ontiveros, G. Ponti, M. Torres Verified, Y. Ueda, F. M. Vincentelli, I. V. Yanes-Rizo, M. Shidatsu, V. A. Cúneo, J. M. Corral-Santana, D. M. Russell
| Nature Verified
Abstract Accretion onto black holes powers some of the most energetic sources in the Universe, yet its behaviour across the luminosity range remains poorly understood. Specifically, as the luminosity approaches the Eddington limit (LEdd), the inner accretion disk is expected to depart from the standard thin-disk solution, becoming vertically extended. The luminosity threshold and observational signatures of this transition remain, however, uncertain.
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The connection between the fastest astrophysical jets and the spin axis of their black hole - Nature Astronomy

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By S. E. Motta, R. P. Fender
| Nature Verified
Abstract Astrophysical jets signpost the most extreme phenomena in the Universe. Despite a century of study, connections between the physics of black holes and the processes underpinning the formation and launch of these jets remain elusive. Here we present a statistically significant sample of transient jet speeds from stellar-mass black holes and neutron stars. The fastest jets are exclusively from black holes and propagate along a fixed axis across several ejection phases.
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