Shadow of a rotating braneworld black hole

By L. Amarilla, Ernesto F. Eiroa. 2011

236 citations recorded by the source corpus.

We investigate the shadow cast by a rotating braneworld black hole, in the Randall-Sundrum scenario. In addition to the angular momentum, the tidal charge term deforms the shape of the shadow. For a given value of the rotation parameter, the presence of a negative tidal charge enlarges the shadow and reduces its deformation with respect to Kerr spacetime, while for a positive charge, the opposite effect is obtained. We also analyze the case in which the combination of the rotation parameter and the tidal charge results in a naked singularity. We discuss the observational prospects corresponding to the supermassive black hole at the Galactic center.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/496f184e5199d0ca317cec5e239ddc7038dde1ce

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Citations in the corpus

Black Hole Parameter Estimation from Its Shadow (2018, methodology): “…shadow radius and distortion parameter, were extensively used in the characterization of black holes shadows (De Vries 2000; Amarilla et al. 2010; Amarilla & Eiroa 2012, 2013; Papnoi et al. 2014; Abdujabbarov et al. 2015a, 2016; Amir & Ghosh 2016; Amir et al. 2018; Eiroa & Sendra 2018; Singh &…”
Shadow of Kerr-Taub-NUT black hole (2012, methodology): “…coordinates (Vázquez and Esteban (2004)): α = lim r→∞ ( −r2 sin θdφ dr ) , (13) and β = lim r0→∞ r20 dθ dr , (14) if the distant observer is located at long distance from the rotating black hole with NUT charge then limit r → ∞ can be used (Amarilla et al. 2010; Amarilla and Eiroa 2012, 2013).”
Observing the shadow of Einstein-Maxwell-Dilaton-Axion black hole (2013, background): “[28], the initial growth is related to the particular shape of the circumference of reference.”
PHOTON RINGS AROUND KERR AND KERR-LIKE BLACK HOLES (2013, background): “Images of photon rings and accretion flows around black holes and some exotic objects in other theories of gravity were also analyzed by Bambi & Yoshida (2010), Amarilla et al. (2010), Bambi et al. (2012), Amarilla & Eiroa (2012), and Bambi (2013b).”
Silhouette of M87*: A new window to peek into the world of hidden dimensions (2019, background): “The nature of the BH shadow for Kerr as well as Kerr-Newmann BHs have been extensively studied in [54,56], while for braneworld BHs one is referred to [57–59].”
A coordinate-independent characterization of a black hole shadow (2015, background): “…in known space-times, either within general relativity (Young 1976; Perlick 2004; Abdujabbarov et al. 2013), or within alternative theories of gravity (Bambi & Modesto 2013; Tsukamoto et al. 2014; Amarilla et al. 2010; Amarilla & Eiroa 2012, 2013; Atamurotov et al. 2013a,b; Schee & Stuchlı́k 2009).”
Testing black hole candidates with electromagnetic radiation (2015, methodology): “…the possibility of testing the Kerr metric with the detection of a shadow and to calculate the shadows of non-Kerr BHs (Abdujabbarov et al., 2013; Amarilla & Eiroa, 2012, 2013; Amarilla et al., 2010; Atamurotov et al., 2013a,b; Bambi, 2013f; Bambi et al., 2012; Bambi & Freese, 2009; Bambi &…”