Frederick Hamann

963 total citations
10 papers, 524 citations indexed

About

Frederick Hamann is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Radiation. According to data from OpenAlex, Frederick Hamann has authored 10 papers receiving a total of 524 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Astronomy and Astrophysics, 2 papers in Nuclear and High Energy Physics and 1 paper in Radiation. Recurrent topics in Frederick Hamann's work include Astrophysical Phenomena and Observations (7 papers), Galaxies: Formation, Evolution, Phenomena (5 papers) and Astrophysics and Star Formation Studies (5 papers). Frederick Hamann is often cited by papers focused on Astrophysical Phenomena and Observations (7 papers), Galaxies: Formation, Evolution, Phenomena (5 papers) and Astrophysics and Star Formation Studies (5 papers). Frederick Hamann collaborates with scholars based in United States, Israel and United Kingdom. Frederick Hamann's co-authors include H. Netzer, Joseph C. Shields, K. Nandra, G. A. Kriss, B. M. Peterson, T. J. Turner, W. N. Brandt, S. Kaspi, S. B. Kraemer and I. M. George and has published in prestigious journals such as The Astrophysical Journal, The Astronomical Journal and Redalyc (Universidad Autónoma del Estado de México).

In The Last Decade

Frederick Hamann

10 papers receiving 515 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Frederick Hamann United States	7	488	140	53	45	24	10	524
Masao Sako United States	6	397 0.8×	158 1.1×	49 0.9×	24 0.5×	32 1.3×	10	426
Smita Mathur United States	12	651 1.3×	216 1.5×	44 0.8×	94 2.1×	24 1.0×	16	680
J. R. Gabel United States	19	982 2.0×	313 2.2×	89 1.7×	109 2.4×	37 1.5×	27	1.0k
E. M. Puchnarewicz United Kingdom	11	390 0.8×	146 1.0×	49 0.9×	25 0.6×	23 1.0×	22	416
Guangyu Li China	11	194 0.4×	80 0.6×	61 1.2×	29 0.6×	13 0.5×	26	291
C. Brüns Germany	10	339 0.7×	99 0.7×	64 1.2×	39 0.9×	13 0.5×	17	405
François Mernier Netherlands	14	459 0.9×	95 0.7×	33 0.6×	63 1.4×	9 0.4×	32	478
F. Giovannelli Italy	10	423 0.9×	212 1.5×	26 0.5×	39 0.9×	10 0.4×	95	485
Efraín Gatuzz Germany	12	322 0.7×	97 0.7×	64 1.2×	36 0.8×	27 1.1×	33	368
S. B. Kraemer United States	12	660 1.4×	191 1.4×	38 0.7×	59 1.3×	18 0.8×	30	671

Countries citing papers authored by Frederick Hamann

Since Specialization

Citations

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

Fields of papers citing papers by Frederick Hamann

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Frederick Hamann

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

All Works

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10 of 10 papers shown

Liu, Weizhe, Sylvain Veilleux, David S. N. Rupke, et al.. (2022). Galactic Winds across the Gas-rich Merger Sequence. II. Lyα Emission and Highly Ionized O vi and N v Outflows in Ultraluminous Infrared Galaxies. The Astrophysical Journal. 934(2). 160–160. 1 indexed citations

Hamann, Frederick, et al.. (2007). Physical properties of absorbers in high redshift quasars. Redalyc (Universidad Autónoma del Estado de México). 3 indexed citations

Gabel, J. R., S. B. Kraemer, D. M. Crenshaw, et al.. (2005). The Ionized Gas and Nuclear Environment in NGC 3783. V. Variability and Modeling of the Intrinsic Ultraviolet Absorption. The Astrophysical Journal. 631(2). 741–761. 54 indexed citations

Netzer, H., S. Kaspi, Ehud Behar, et al.. (2003). The Ionized Gas and Nuclear Environment in NGC 3783. IV. Variability and Modeling of the 900 KilosecondChandraSpectrum. The Astrophysical Journal. 599(2). 933–948. 108 indexed citations

Kaspi, S., W. N. Brandt, I. M. George, et al.. (2002). The Ionized Gas and Nuclear Environment in NGC 3783. I. Time‐averaged 900 KilosecondChandraGrating Spectroscopy. The Astrophysical Journal. 574(2). 643–662. 182 indexed citations

Hamann, Frederick, Tom A. Barlow, F. Chaffee, C. B. Foltz, & R. J. Weymann. (2001). High‐Resolution Keck Spectra of the Associated Absorption Lines in 3C 191. The Astrophysical Journal. 550(1). 142–152. 84 indexed citations

Hamann, Frederick. (2000). Quasistellar Objects: Intrinsic AGN Absorption Lines. 2362. 2 indexed citations

Hamann, Frederick, H. Netzer, & Joseph C. Shields. (2000). The Nature of Associated Absorption and the Ultraviolet–X‐Ray Connection in 3C 288.1. The Astrophysical Journal. 536(1). 101–111. 30 indexed citations

Davidson, Kris, Dennis Ebbets, Sveneric Johansson, Jon A. Morse, & Frederick Hamann. (1997). HST/GHRS Observations of the Compact Slow Ejecta of ETA Carinae. The Astronomical Journal. 113. 335–335. 49 indexed citations

10.

Schwartz, Richard D., S. E. Persson, & Frederick Hamann. (1990). Further results of a southern survey for H-alpha emission objects. The Astronomical Journal. 100. 793–793. 11 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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