3 papers
gr-qc2026
Dyonic hairy black holes in gauge-invariant scalar-vector-tensor theories: Cubic and quartic interactions
Masaki Kitagawa, Naoki Tsukamoto, Ryotaro Kase
We construct and classify asymptotically flat, static, spherically symmetric hairy black hole solutions in gauge-invariant scalar-vector-tensor (SVT) theories carrying both…
gr-qc2025
Linear perturbations of dyonic black holes in the lowest-order gauge-invariant scalar-vector-tensor theories
Kitaro Taniguchi, Shunta Nishimura, Naoki Tsukamoto +1
We study linear perturbations on top of the static and spherically symmetric background of dyonic black hole solutions endowed with electric and magnetic charges, as well as a scal…
gr-qc2024
Neutral particle collisions near Gibbons-Maeda-Garfinkle-Horowitz-Strominger black holes after shadow observations
Naoki Tsukamoto, Ryotaro Kase
A Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) black hole with a magnetic charge (or an electric charge) has noteworthy features that its scalar curvature near the event hor…