Norichika Sago

6.3k total citations
41 papers, 1.8k citations indexed

About

Norichika Sago is a scholar working on Astronomy and Astrophysics, Statistical and Nonlinear Physics and Nuclear and High Energy Physics. According to data from OpenAlex, Norichika Sago has authored 41 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Astronomy and Astrophysics, 13 papers in Statistical and Nonlinear Physics and 12 papers in Nuclear and High Energy Physics. Recurrent topics in Norichika Sago's work include Pulsars and Gravitational Waves Research (39 papers), Astrophysical Phenomena and Observations (33 papers) and Experimental and Theoretical Physics Studies (12 papers). Norichika Sago is often cited by papers focused on Pulsars and Gravitational Waves Research (39 papers), Astrophysical Phenomena and Observations (33 papers) and Experimental and Theoretical Physics Studies (12 papers). Norichika Sago collaborates with scholars based in Japan, United Kingdom and United States. Norichika Sago's co-authors include Leor Barack, Takahiro Tanaka, Hiroyuki Nakano, Thibault Damour, Sarp Akçay, Ryuichi Fujita, Niels Warburton, Soichiro Isoyama, Wataru Hikida and Steven Detweiler and has published in prestigious journals such as Physical Review Letters, Physical review. D and Progress of Theoretical Physics.

In The Last Decade

Norichika Sago

41 papers receiving 1.7k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Norichika Sago Japan 24 1.7k 715 178 131 127 41 1.8k
Niels Warburton Ireland 26 1.6k 0.9× 598 0.8× 133 0.7× 74 0.6× 102 0.8× 48 1.7k
A. Gopakumar India 22 1.3k 0.8× 423 0.6× 56 0.3× 52 0.4× 173 1.4× 40 1.3k
Michael Kesden United States 25 1.9k 1.1× 646 0.9× 84 0.5× 45 0.3× 114 0.9× 46 2.0k
G. Carullo Italy 17 1.0k 0.6× 448 0.6× 68 0.4× 61 0.5× 141 1.1× 28 1.1k
Andrea Geralico Italy 20 1.4k 0.8× 703 1.0× 63 0.4× 91 0.7× 134 1.1× 105 1.4k
Alexandre Le Tiec France 20 1.4k 0.8× 693 1.0× 101 0.6× 93 0.7× 96 0.8× 27 1.5k
S. Bose India 22 1.4k 0.8× 531 0.7× 51 0.3× 124 0.9× 173 1.4× 70 1.5k
Nils Dorband Germany 7 1.2k 0.7× 312 0.4× 112 0.6× 27 0.2× 185 1.5× 7 1.3k
Sai Iyer India 9 1.3k 0.8× 1.0k 1.5× 41 0.2× 224 1.7× 35 0.3× 13 1.4k
R. Cotesta United States 14 1.1k 0.6× 375 0.5× 60 0.3× 51 0.4× 153 1.2× 18 1.1k

Countries citing papers authored by Norichika Sago

Since Specialization
Citations

This map shows the geographic impact of Norichika Sago's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Norichika Sago with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Norichika Sago more than expected).

Fields of papers citing papers by Norichika Sago

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Norichika Sago. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Norichika Sago. The network helps show where Norichika Sago may publish in the future.

Co-authorship network of co-authors of Norichika Sago

This figure shows the co-authorship network connecting the top 25 collaborators of Norichika Sago. A scholar is included among the top collaborators of Norichika Sago based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Norichika Sago. Norichika Sago is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Sago, Norichika, Ryuichi Fujita, & Hiroyuki Nakano. (2025). Post-Newtonian templates for phase evolution of spherical extreme mass ratio inspirals. Physical review. D. 111(6). 1 indexed citations
2.
Nakano, Hiroyuki, Ryuichi Fujita, Soichiro Isoyama, & Norichika Sago. (2021). Scope Out Multiband Gravitational-Wave Observations of GW190521-Like Binary Black Holes with Space Gravitational Wave Antenna B-DECIGO. Universe. 7(3). 53–53. 11 indexed citations
3.
Barack, Leor, M. Colleoni, Thibault Damour, Soichiro Isoyama, & Norichika Sago. (2019). Self-force effects on the marginally bound zoom-whirl orbit in Schwarzschild spacetime. Physical review. D. 100(12). 15 indexed citations
4.
Uchikata, N., Hiroyuki Nakano, Tatsuya Narikawa, et al.. (2019). Searching for black hole echoes from the LIGO-Virgo catalog GWTC-1. Physical review. D. 100(6). 55 indexed citations
5.
Sago, Norichika, Ryuichi Fujita, & Hiroyuki Nakano. (2016). Accuracy of the post-Newtonian approximation for extreme mass ratio inspirals from a black-hole perturbation approach. Physical review. D. 93(10). 14 indexed citations
6.
Akçay, Sarp, Alexandre Le Tiec, Leor Barack, Norichika Sago, & Niels Warburton. (2015). Comparison between self-force and post-Newtonian dynamics: Beyond circular orbits. Physical review. D. Particles, fields, gravitation, and cosmology. 91(12). 47 indexed citations
7.
Barack, Leor & Norichika Sago. (2011). Beyond the geodesic approximation: Conservative effects of the gravitational self-force in eccentric orbits around a Schwarzschild black hole. Physical review. D. Particles, fields, gravitation, and cosmology. 83(8). 104 indexed citations
8.
Tiec, Alexandre Le, Abdul Mroué, Leor Barack, et al.. (2011). Periastron Advance in Black-Hole Binaries. Physical Review Letters. 107(14). 141101–141101. 107 indexed citations
9.
Barack, Leor & Norichika Sago. (2010). Gravitational self-force on a particle in eccentric orbit around a Schwarzschild black hole. Physical review. D. Particles, fields, gravitation, and cosmology. 81(8). 125 indexed citations
10.
Barack, Leor & Norichika Sago. (2009). Gravitational Self-Force Correction to the Innermost Stable Circular Orbit of a Schwarzschild Black Hole. Physical Review Letters. 102(19). 191101–191101. 130 indexed citations
11.
Sago, Norichika. (2009). Gravitational self-force effects on a point mass moving around a Schwarzschild black hole. Classical and Quantum Gravity. 26(9). 94025–94025. 6 indexed citations
12.
Barack, Leor & Norichika Sago. (2007). Gravitational self-force on a particle in circular orbit around a Schwarzschild black hole. Physical review. D. Particles, fields, gravitation, and cosmology. 75(6). 113 indexed citations
13.
Tagoshi, Hideyuki, H. Mukhopadhyay, Sanjeev Dhurandhar, et al.. (2007). Detecting gravitational waves from inspiraling binaries with a network of detectors: Coherent strategies for correlated detectors. Physical review. D. Particles, fields, gravitation, and cosmology. 75(8). 3 indexed citations
14.
Mukhopadhyay, H., et al.. (2006). Detecting gravitational waves from inspiraling binaries with a network of detectors: Coherent versus coincident strategies. Physical review. D. Particles, fields, gravitation, and cosmology. 74(8). 11 indexed citations
15.
Sago, Norichika, et al.. (2006). Adiabatic Evolution of Orbital Parameters in Kerr Spacetime. Progress of Theoretical Physics. 115(5). 873–907. 57 indexed citations
16.
Hikida, Wataru, Sanjay Jhingan, Hiroyuki Nakano, et al.. (2005). A New Analytical Method for Self-Force Regularization. II: -- Testing the Efficiency for Circular Orbits --. Progress of Theoretical Physics. 113(2). 283–303. 13 indexed citations
17.
Sago, Norichika, Kunihito Ioka, Takashi Nakamura, & Ryo Yamazaki. (2004). Gravitational wave memory of gamma-ray burst jets. Physical review. D. Particles, fields, gravitation, and cosmology. 70(10). 31 indexed citations
18.
Sago, Norichika, Hiroyuki Nakano, & Misao Sasaki. (2003). Gauge problem in the gravitational self-force: Harmonic gauge approach in the Schwarzschild background. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 67(10). 38 indexed citations
19.
Nakano, Hiroyuki, Norichika Sago, & Misao Sasaki. (2003). Gauge problem in the gravitational self-force: First post-Newtonian force in the Regge-Wheeler gauge. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 68(12). 20 indexed citations
20.
Sago, Norichika, Y. Himemoto, & Misao Sasaki. (2001). Quantum fluctuations in brane-world inflation without an inflaton on the brane. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 65(2). 27 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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