J. J. Cowan

12.9k citations

129 papers · 8.0k indexed · 4 hit papers · h-index 48

Astronomy and Astrophysics top 0.2%
Nuclear and High Energy Physics top 0.5%
Instrumentation top 0.5%
Atomic and Molecular Physics, and Optics top 5%
Radiation top 1%

Co-authors: C. Sneden J. E. Lawler F.‐K. Thielemann R. Gallino James W. Truran Debra L. Burris E. A. Den Hartog B. Pfeiffer
Topics: Stellar, planetary, and galactic studies (66 papers)Astro and Planetary Science (57 papers)Gamma-ray bursts and supernovae (51 papers)
Cited by: Astronomy and Astrophysics Instrumentation Nuclear and High Energy Physics
Journals: Nature Science Reviews of Modern Physics
Partner nations: United States Germany Italy

In The Last Decade

J. J. Cowan

124 papers receiving 7.7k citations

Hit Papers

align trajectories

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.

Neutron-Capture Elements in the Early Galaxy

2008 546 citations C. Sneden, J. J. Cowan et al. profile →
The R-process and nucleochronology

1991 435 citations J. J. Cowan, F.‐K. Thielemann et al. profile →
Galactic Evolution of Sr, Y, and Zr: A Multiplicity of Nucleosynthetic Processes

2004 391 citations J. J. Cowan, C. Sneden et al. The Astrophysical Journal profile →
Origin of the heaviest elements: The rapid neutron-capture process

2021 384 citations J. J. Cowan, C. Sneden et al. profile →

Peers

Countries citing papers authored by J. J. Cowan

Since Specialization

Citations

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

Fields of papers citing papers by J. J. Cowan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J. J. Cowan

This figure shows the co-authorship network connecting the top 25 collaborators of J. J. Cowan. A scholar is included among the top collaborators of J. J. Cowan 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 J. J. Cowan. J. J. Cowan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Atomic Transition Probabilities for Transitions of Si i and Si ii and the Silicon Abundances of Several Very Metal-poor Stars ^∗ 2023 ·The Astrophysical Journal Supplement Series ·E. A. Den Hartog,J. E. Lawler,C. Sneden,Ian U. Roederer,J. J. Cowan	8
2	Making the Heaviest Elements in the Universe: A Review of the Rapid Neutron Capture Process 2019 ·arXiv (Cornell University) ·J. J. Cowan,J. E. Lawler,G. Martı́nez-Pinedo,C. Sneden,F.‐K. Thielemann,A. Aprahamian,K. Langanke,M. Wiescher	11
3	Detailed Iron-Group Abundances in a Very Metal-Poor Main Sequence Turnoff Star 2017 ·C. Sneden,Ian U. Roederer,Ann Merchant Boesgaard,J. E. Lawler,(unknown),J. J. Cowan,Jennifer Sobeck	1
4	IMPROVED Cr ii log(gf) VALUES AND ABUNDANCE DETERMINATIONS IN THE PHOTOSPHERES OF THE SUN AND METAL-POOR STAR HD 84937 2017 ·The Astrophysical Journal Supplement Series ·J. E. Lawler,C. Sneden,Gillian Nave,E. A. Den Hartog,(unknown),J. J. Cowan	32
5	IMPROVED V II log( gf ) VALUES, HYPERFINE STRUCTURE CONSTANTS, AND ABUNDANCE DETERMINATIONS IN THE PHOTOSPHERES OF THE SUN AND METAL-POOR STAR HD 84937 2014 ·The Astrophysical Journal Supplement Series ·M. P. Wood,J. E. Lawler,E. A. Den Hartog,C. Sneden,J. J. Cowan	43
6	The impact of recent advances in laboratory astrophysics on our understanding of the cosmos 2012 ·Reports on Progress in Physics ·D. W. Savin,N. S. Brickhouse,J. J. Cowan,R. P. Drake,S. R. Federman,G. J. Ferland,Adam Frank,Murthy S. Gudipati,W. C. Haxton,Eric Herbst,Stefano Profumo,Farid Salama,L. M. Ziurys,Ellen G. Zweibel	38
7	DETECTION OF THE SECOND r -PROCESS PEAK ELEMENT TELLURIUM IN METAL-POOR STARS, 2012 ·The Astrophysical Journal Letters ·Ian U. Roederer,J. E. Lawler,J. J. Cowan,Timothy C. Beers,Anna Frebel,Inese I. Ivans,H. Schatz,Jennifer Sobeck,C. Sneden	29
8	The Hobby-Eberly Telescope Chemical Abundances of Stars in the Halo (CASH) Project 2009 ·Matthew Shetrone,Anna Frebel,Carlos Allende Prieto,(unknown),C. Sneden,(unknown),J. Rhee,Ian U. Roederer,J. J. Cowan	1
9	Nucleosynthesis Modes in the High‐Entropy‐Wind Scenario of Type II Supernovae 2008 ·AIP conference proceedings ·K. Farouqi,Karl Kratz,J. J. Cowan,L. Mashonkina,B. Pfeiffer,C. Sneden,F.‐K. Thielemann,J. W. Truran	7
10	Europium, Samarium, and Neodymium Isotopic Fractions in Metal‐Poor Stars 2008 ·AIP conference proceedings ·Ian U. Roederer,J. E. Lawler,Christopher Sneden,J. J. Cowan,Jennifer Sobeck,C. A. Pilachowski	3
11	The Hobby-Eberly Telescope Chemical Abundances of Stars in the Halo (CASH) Project III. Abundance Analysis of Three Bright Hamburg/ESO Survey Stars 2008 ·(unknown),Anna Frebel,J. J. Cowan,Carlos Allende Prieto,C. Sneden	0
12	Improved Laboratory Transition Probabilities for Hfiiand Hafnium Abundances in the Sun and 10 Metal‐poor Stars 2007 ·The Astrophysical Journal Supplement Series ·J. E. Lawler,E. A. Den Hartog,Zacariah E. Labby,(unknown),J. J. Cowan,Inese I. Ivans	59
13	A constant surprise 2007 ·Nature ·J. J. Cowan	1
14	Heavy element synthesis in the oldest stars and the early Universe 2006 ·Nature ·J. J. Cowan,Christopher Sneden	75
15	The Chemical Composition and Age of the Metal‐poor Halo Star BD +17o3248 2002 ·The Astrophysical Journal ·J. J. Cowan,C. Sneden,Scott Burles,Inese I. Ivans,Timothy C. Beers,James W. Truran,J. E. Lawler,F. Primas,George M. Fuller,B. Pfeiffer,Karl Kratz	223
16	Ther‐Process–enriched Low‐Metallicity Giant HD 115444 2000 ·The Astrophysical Journal ·(unknown),C. Sneden,B. Gustafsson,J. J. Cowan	182
17	Abundances in the Ultra-Metal-Poor Halo Giant CS 22892-052: Implications for the Production of Neutron-Capture Elements in the Early Galaxy 1999 ·AAS ·J. J. Cowan,C. Sneden,Inese I. Ivans,Scott Burles,Timothy C. Beers,George M. Fuller	0
18	The Probable Detection of SN 1923A: The Oldest Radio Supernova? 1998 ·The Astrophysical Journal ·(unknown),D. A. Roberts,J. J. Cowan,David Branch	9
19	Radio observations of M83 and its supernova remnants 1994 ·The Astrophysical Journal ·J. J. Cowan,D. A. Roberts,David Branch	17
20	Seed abundances for r-processing in the helium shells of supernovae 1980 ·The Astrophysical Journal ·J. J. Cowan,(unknown),J. W. Truran	10

About J. J. Cowan

J. J. Cowan is a scholar working on Astronomy and Astrophysics, Instrumentation and Nuclear and High Energy Physics, having authored 129 papers that have together received 8.0k indexed citations. Recurring topics across this work include Stellar, planetary, and galactic studies (66 papers), Astro and Planetary Science (57 papers) and Gamma-ray bursts and supernovae (51 papers). The work is most often cited by research in Astronomy and Astrophysics (6.6k citations), Instrumentation (1.4k citations) and Nuclear and High Energy Physics (3.5k citations). J. J. Cowan has collaborated with scholars based in United States, Germany and Italy. Frequent co-authors include C. Sneden, J. E. Lawler, F.‐K. Thielemann, R. Gallino, James W. Truran, Debra L. Burris, E. A. Den Hartog, B. Pfeiffer, Inese I. Ivans and Timothy C. Beers. Their work appears in journals such as Nature, Science and Reviews of Modern Physics.

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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