Our paper “Binary black hole shadows, chaotic scattering and the Cantor set”, has been included in the CQG Highlights of 2016, which are now free to read.
You can also see Clifford Will’s blog entry about Highlights at CQG+.
In our new paper, published in Physical Review D, Sam Dolan and I investigate the existence of stable photon orbits (SPOs) in four-dimensional stationary axisymmetric electrovacuum spacetimes. In particular, we explore SPOs around Majumdar–Papapetrou and Reissner–Nordström di-holes, analysing the transition from order to chaos using a selection of Poincaré sections.
Interestingly, the existence of highly chaotic SPOs around a pair of black holes can be related to the ‘speckled’, highly chaotic patterns visible in certain binary black hole shadows, which we explored in our previous paper, “Binary black hole shadows, chaotic scattering and the Cantor set”.
In our new paper, published in Classical and Quantum Gravity, Sam Dolan and I explore the fractal structure of binary black hole shadows using a Majumdar–Papapetrou toy model of two extremal Reissner–Nordström black holes in static equilibrium.
In July 2016, Sam Dolan and I were invited to write an ‘Insight’ piece for CQG+, the companion website to Classical and Quantum Gravity. To read the article, please visit the CQG+ website or continue reading this blog post.