Can we distinguish between black holes and wormholes by their Einstein-ring systems? N Tsukamoto, T Harada, K Yajima Physical Review D 86 (10), 104062, 2012 | 139 | 2012 |

Black hole shadow in an asymptotically flat, stationary, and axisymmetric spacetime: The Kerr-Newman and rotating regular black holes N Tsukamoto Physical Review D 97 (6), 064021, 2018 | 113 | 2018 |

Constraining the spin and the deformation parameters from the black hole shadow N Tsukamoto, Z Li, C Bambi Journal of Cosmology and Astroparticle Physics 2014 (06), 043, 2014 | 108 | 2014 |

Strong deflection limit analysis and gravitational lensing of an Ellis wormhole N Tsukamoto Physical Review D 94 (12), 124001, 2016 | 97 | 2016 |

Deflection angle in the strong deflection limit in a general asymptotically flat, static, spherically symmetric spacetime N Tsukamoto Physical Review D 95 (6), 064035, 2017 | 70 | 2017 |

Light curves of light rays passing through a wormhole N Tsukamoto, T Harada Physical Review D 95 (2), 024030, 2017 | 66 | 2017 |

Signed magnification sums for general spherical lenses N Tsukamoto, T Harada Physical Review D 87 (2), 024024, 2013 | 55 | 2013 |

Wave effect in gravitational lensing by the Ellis wormhole CM Yoo, T Harada, N Tsukamoto Physical Review D 87 (8), 084045, 2013 | 49 | 2013 |

Note on the effect of a massive accretion disk in the measurements of black hole spins C Bambi, D Malafarina, N Tsukamoto Physical Review D 89 (12), 127302, 2014 | 47 | 2014 |

Retrolensing by a wormhole at deflection angles and N Tsukamoto Physical Review D 95 (8), 084021, 2017 | 46 | 2017 |

Gravitational lensing in Tangherlini spacetime in the weak gravitational field and the strong gravitational field N Tsukamoto, T Kitamura, K Nakajima, H Asada Physical Review D 90 (6), 064043, 2014 | 42 | 2014 |

Gravitational lensing in the Simpson-Visser black-bounce spacetime in a strong deflection limit N Tsukamoto Physical Review D 103 (2), 024033, 2021 | 39 | 2021 |

Retrolensing by a charged black hole N Tsukamoto, Y Gong Physical Review D 95 (6), 064034, 2017 | 38 | 2017 |

High energy collision of two particles in wormhole spacetimes N Tsukamoto, C Bambi Physical Review D 91 (8), 084013, 2015 | 34 | 2015 |

A parametrization to test black hole candidates with the spectrum of thin disks N Lin, N Tsukamoto, M Ghasemi-Nodehi, C Bambi The European Physical Journal C 75 (12), 1-13, 2015 | 26 | 2015 |

Gravitational lensing by two photon spheres in a black-bounce spacetime in strong deflection limits N Tsukamoto Physical Review D 104, 064022, 2021 | 25 | 2021 |

Extended source effect on microlensing light curves by an Ellis wormhole N Tsukamoto, Y Gong Physical Review D 97 (8), 084051, 2018 | 25 | 2018 |

Nonlogarithmic divergence of a deflection angle by a marginally unstable photon sphere of the Damour-Solodukhin wormhole in a strong deflection limit N Tsukamoto Physical Review D 101 (10), 104021, 2020 | 23 | 2020 |

High energy collision of particles in the vicinity of extremal black holes in higher dimensions: Banados-Silk-West process as linear instability of extremal black holes N Tsukamoto, M Kimura, T Harada Physical Review D 89 (2), 024020, 2014 | 23 | 2014 |

Linear stability analysis of a rotating thin-shell wormhole N Tsukamoto, T Kokubu Physical Review D 98 (4), 044026, 2018 | 19 | 2018 |