Nobunari Kashikawa

15.5k total citations · 2 hit papers
149 papers, 5.6k citations indexed

About

Nobunari Kashikawa is a scholar working on Astronomy and Astrophysics, Instrumentation and Nuclear and High Energy Physics. According to data from OpenAlex, Nobunari Kashikawa has authored 149 papers receiving a total of 5.6k indexed citations (citations by other indexed papers that have themselves been cited), including 140 papers in Astronomy and Astrophysics, 75 papers in Instrumentation and 17 papers in Nuclear and High Energy Physics. Recurrent topics in Nobunari Kashikawa's work include Galaxies: Formation, Evolution, Phenomena (124 papers), Astronomy and Astrophysical Research (75 papers) and Stellar, planetary, and galactic studies (54 papers). Nobunari Kashikawa is often cited by papers focused on Galaxies: Formation, Evolution, Phenomena (124 papers), Astronomy and Astrophysical Research (75 papers) and Stellar, planetary, and galactic studies (54 papers). Nobunari Kashikawa collaborates with scholars based in Japan, United States and United Kingdom. Nobunari Kashikawa's co-authors include Kazuhiro Shimasaku, Masanori Iye, Sadanori Okamura, Masami Ouchi, Hisanori Furusawa, Kazuaki Ota, Mamoru Doi, Masafumi Yagi, Yutaka Komiyama and M. Yoshida and has published in prestigious journals such as Nature, Science and The Astrophysical Journal.

In The Last Decade

Nobunari Kashikawa

142 papers receiving 5.4k citations

Hit Papers

STATISTICS OF 207 Lyα EMI... 2010 2026 2015 2020 2010 2022 100 200 300 400
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. STATISTICS OF 207 Lyα EMITTERS AT A REDSHIFT NEAR 7: CONSTRAINTS ON REIONIZATION AND GALAXY FORMATION MODELS
    2010 427 citations Masami Ouchi, Kazuhiro Shimasaku et al. The Astrophysical Journal profile →
  2. GOLDRUSH. IV. Luminosity Functions and Clustering Revealed with ∼4,000,000 Galaxies at z ∼ 2–7: Galaxy–AGN Transition, Star Formation Efficiency, and Implication for Evolution at z > 10
    2022 127 citations Yuichi Harikane, Yoshiaki Ono et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Nobunari Kashikawa Japan 40 5.4k 2.4k 1.1k 314 263 149 5.6k
E. Vanzella Italy 44 6.0k 1.1× 3.1k 1.3× 898 0.8× 287 0.9× 297 1.1× 103 6.2k
Pascal A. Oesch United States 43 5.4k 1.0× 2.9k 1.2× 844 0.7× 229 0.7× 255 1.0× 127 5.6k
R. J. McLure United Kingdom 42 5.3k 1.0× 2.6k 1.1× 869 0.8× 183 0.6× 242 0.9× 97 5.4k
L. Pentericci Italy 46 6.2k 1.1× 2.7k 1.1× 1.5k 1.3× 265 0.8× 215 0.8× 155 6.4k
Daniel P. Stark United States 47 5.4k 1.0× 2.5k 1.0× 708 0.6× 322 1.0× 296 1.1× 112 5.6k
Hisanori Furusawa Japan 27 3.5k 0.6× 1.6k 0.7× 688 0.6× 242 0.8× 229 0.9× 58 3.6k
Michele Trenti United States 38 4.5k 0.8× 2.3k 1.0× 750 0.7× 181 0.6× 222 0.8× 123 4.6k
E. Giallongo Italy 40 4.2k 0.8× 2.2k 0.9× 667 0.6× 201 0.6× 240 0.9× 117 4.4k
A. F. M. Moorwood Germany 38 5.5k 1.0× 2.3k 0.9× 687 0.6× 248 0.8× 345 1.3× 157 5.7k
Rogier A. Windhorst United States 35 3.9k 0.7× 1.7k 0.7× 998 0.9× 141 0.4× 173 0.7× 193 4.0k

Countries citing papers authored by Nobunari Kashikawa

Since Specialization
Citations

This map shows the geographic impact of Nobunari Kashikawa'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 Nobunari Kashikawa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Nobunari Kashikawa more than expected).

Fields of papers citing papers by Nobunari Kashikawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Nobunari Kashikawa. 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 Nobunari Kashikawa. The network helps show where Nobunari Kashikawa may publish in the future.

Co-authorship network of co-authors of Nobunari Kashikawa

This figure shows the co-authorship network connecting the top 25 collaborators of Nobunari Kashikawa. A scholar is included among the top collaborators of Nobunari Kashikawa 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 Nobunari Kashikawa. Nobunari Kashikawa 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.
Matsuoka, Yoshiki, Masafusa Onoue, K. Iwasawa, et al.. (2025). SHELLQs. Bridging the Gap: JWST Unveils Obscured Quasars in the Most Luminous Galaxies at z > 6. The Astrophysical Journal. 988(1). 57–57. 1 indexed citations
2.
Kashikawa, Nobunari, et al.. (2025). Age dependence of Lyα escape fraction of Lyα emitters and their significant role in cosmic reionization. Monthly Notices of the Royal Astronomical Society.
3.
Cai, Zheng, Yongming Liang, Nobunari Kashikawa, et al.. (2024). MAMMOTH-Subaru. V. Effects of Cosmic Variance on Lyα Luminosity Functions at z = 2.2–2.3. The Astrophysical Journal. 961(1). 102–102. 3 indexed citations
4.
Takahashi, Ayumi, Yoshiki Matsuoka, Masafusa Onoue, et al.. (2024). Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z ∼ 6 Estimated via Spectral Comparison with Low-z Quasars. The Astrophysical Journal. 960(2). 112–112. 6 indexed citations
5.
He, Wanqiu, Masayuki Akiyama, Motohiro Enoki, et al.. (2024). Black Hole Mass and Eddington-ratio Distributions of Less-luminous Quasars at z ∼ 4 in the Subaru Hyper Suprime-Cam Wide Field. The Astrophysical Journal. 962(2). 152–152. 10 indexed citations
6.
Fudamoto, Yoshinobu, Akio Inoue, Yuma Sugahara, et al.. (2023). Updated Measurements of [O iii] 88 μm, [C ii] 158 μm, and Dust Continuum Emission from a z = 7.2 Galaxy. The Astrophysical Journal. 945(1). 69–69. 7 indexed citations
7.
Kashikawa, Nobunari, Yoshiki Matsuoka, Wanqiu He, et al.. (2023). Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVIII. The Dark Matter Halo Mass of Quasars at z ∼ 6. The Astrophysical Journal. 954(2). 210–210. 20 indexed citations
8.
Harikane, Yuichi, Masami Ouchi, Yoshiaki Ono, et al.. (2022). SILVERRUSH. XII. Intensity Mapping for Lyα Emission Extending over 100–1000 Comoving Kpc around z ∼ 2−7 LAEs with Subaru HSC-SSP and CHORUS Data. The Astrophysical Journal. 931(2). 97–97. 13 indexed citations
9.
Kashikawa, Nobunari, Daichi Kashino, Kei Ito, et al.. (2022). The physical origin for spatially large scatter of IGM opacity at the end of reionization: The IGM Lyα opacity-galaxy density relation. Monthly Notices of the Royal Astronomical Society. 515(4). 5914–5926. 15 indexed citations
10.
Uchiyama, Hisakazu, Takuji Yamashita, Jun Toshikawa, et al.. (2022). A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). VI. Distant Filamentary Structures Pointed Out by High-z Radio Galaxies at z ∼ 4. The Astrophysical Journal. 926(1). 76–76. 6 indexed citations
11.
Overzier, Roderik & Nobunari Kashikawa. (2019). Tracing the formation history of galaxy clusters into the epoch of reionization. Bulletin of the American Astronomical Society. 51(3). 180. 1 indexed citations
12.
Higuchi, Ryo, Masami Ouchi, Yoshiaki Ono, et al.. (2019). SILVERRUSH. VII. Subaru/HSC Identifications of Protocluster Candidates at z ∼ 6–7: Implications for Cosmic Reionization. The Astrophysical Journal. 879(1). 28–28. 45 indexed citations
13.
Uchiyama, Hisakazu, Nobunari Kashikawa, Roderik Overzier, et al.. (2019). Suppression of Low-mass Galaxy Formation around Quasars at z ∼ 2–3. The Astrophysical Journal. 870(1). 45–45. 9 indexed citations
14.
Ota, Kazuaki, Bram Venemans, Yoshiaki Taniguchi, et al.. (2018). Large-scale Environment of a z = 6.61 Luminous Quasar Probed by Lyα Emitters and Lyman Break Galaxies∗. The Astrophysical Journal. 856(2). 109–109. 31 indexed citations
15.
Malkan, Matthew A., Daniel P. Cohen, Nobunari Kashikawa, et al.. (2017). Lyman-break Galaxies at z ∼ 3 in the Subaru Deep Field: Luminosity Function, Clustering, and [O iii] Emission. eScholarship (California Digital Library). 15 indexed citations
16.
Toshikawa, Jun, Nobunari Kashikawa, Roderik Overzier, et al.. (2016). A SYSTEMATIC SURVEY OF PROTOCLUSTERS AT z ∼ 3–6 IN THE CFHTLS DEEP FIELDS. eScholarship (California Digital Library). 47 indexed citations
17.
Ly, Chun, Sangeeta Malhotra, Matthew A. Malkan, et al.. (2016). THE METAL ABUNDANCES ACROSS COSMIC TIME ( ) SURVEY. I. OPTICAL SPECTROSCOPY IN THE SUBARU DEEP FIELD. eScholarship (California Digital Library). 9 indexed citations
18.
Ota, Kazuaki, Masanori Iye, Nobunari Kashikawa, et al.. (2012). REIONIZATION AND GALAXY EVOLUTION PROBED BY Z = 7 LYα EMITTERS 1. 73 indexed citations
19.
Kashikawa, Nobunari. (2007). Lyman Alpha Galaxies from Z=5.7 to 6.96 with Subaru. 210. 1 indexed citations
20.
Shirasaki, Y., M. Ohishi, N. Yasuda, et al.. (2004). Searching for a cosmic string through the graviational lens effect: Japanese Virtual Observatory science use case. 314. 46. 3 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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