Jan Hamann

1.2k total citations
20 papers, 766 citations indexed

About

Jan Hamann is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Finance. According to data from OpenAlex, Jan Hamann has authored 20 papers receiving a total of 766 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Astronomy and Astrophysics, 15 papers in Nuclear and High Energy Physics and 2 papers in Finance. Recurrent topics in Jan Hamann's work include Cosmology and Gravitation Theories (19 papers), Dark Matter and Cosmic Phenomena (8 papers) and Galaxies: Formation, Evolution, Phenomena (7 papers). Jan Hamann is often cited by papers focused on Cosmology and Gravitation Theories (19 papers), Dark Matter and Cosmic Phenomena (8 papers) and Galaxies: Formation, Evolution, Phenomena (7 papers). Jan Hamann collaborates with scholars based in Germany, Denmark and Australia. Jan Hamann's co-authors include Yvonne Y. Y. Wong, Steen Hannestad, Georg G. Raffelt, A. Melchiorri, Anže Slosar, Laura Covi, Jasper Hasenkamp, Irene Tamborra, Chiara Arina and Yidong Xu and has published in prestigious journals such as Physical Review Letters, Physical review. D and Frontiers in Neurology.

In The Last Decade

Jan Hamann

19 papers receiving 758 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Jan Hamann Germany 12 599 583 57 26 14 20 766
Emanuela Dimastrogiovanni United States 17 534 0.9× 834 1.4× 127 2.2× 35 1.3× 8 0.6× 31 855
C. Armitage-Caplan Italy 4 369 0.6× 454 0.8× 30 0.5× 39 1.5× 17 1.2× 4 519
Cora Dvorkin United States 11 329 0.5× 493 0.8× 48 0.8× 20 0.8× 19 1.4× 14 520
Joel Meyers United States 13 281 0.5× 412 0.7× 27 0.5× 13 0.5× 11 0.8× 35 455
Ido Ben-Dayan Israel 14 389 0.6× 531 0.9× 47 0.8× 50 1.9× 10 0.7× 32 553
Elena Giusarma Spain 21 1.1k 1.8× 997 1.7× 46 0.8× 22 0.8× 31 2.2× 34 1.3k
Elisa G. M. Ferreira Brazil 10 368 0.6× 504 0.9× 20 0.4× 48 1.8× 28 2.0× 21 531
Jinn-Ouk Gong South Korea 12 414 0.7× 563 1.0× 82 1.4× 41 1.6× 4 0.3× 30 584
Stefano Gariazzo Spain 18 923 1.5× 770 1.3× 28 0.5× 39 1.5× 17 1.2× 43 1.1k
E. Ruiz Morales Spain 10 660 1.1× 693 1.2× 83 1.5× 17 0.7× 2 0.1× 13 870

Countries citing papers authored by Jan Hamann

Since Specialization
Citations

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

Fields of papers citing papers by Jan Hamann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Jan Hamann

This figure shows the co-authorship network connecting the top 25 collaborators of Jan Hamann. A scholar is included among the top collaborators of Jan 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 Jan Hamann. Jan Hamann 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.
Hamann, Jan & Y. W. Kang. (2024). A Minkowski functional analysis of the Cosmic Microwave Background weak lensing convergence. Journal of Cosmology and Astroparticle Physics. 2024(5). 76–76. 2 indexed citations
2.
3.
Hamann, Jan, et al.. (2022). Optimising inflationary features the Bayesian way. Journal of Cosmology and Astroparticle Physics. 2022(3). 36–36. 5 indexed citations
4.
Hamann, Jan & Ameek Malhotra. (2022). Constraining primordial tensor features with the anisotropies of the cosmic microwave background. Journal of Cosmology and Astroparticle Physics. 2022(12). 15–15. 2 indexed citations
5.
Aghamousa, Amir, Jan Hamann, & Arman Shafieloo. (2017). A non-parametric consistency test of the ΛCDM model with Planck CMB data. Journal of Cosmology and Astroparticle Physics. 2017(9). 31–31. 14 indexed citations
6.
Xu, Yidong, Jan Hamann, & Xuelei Chen. (2016). Precise measurements of inflationary features with 21 cm observations. Physical review. D. 94(12). 34 indexed citations
7.
Hamann, Jan & Jasper Hasenkamp. (2013). A new life for sterile neutrinos: resolving inconsistencies using hot dark matter. Journal of Cosmology and Astroparticle Physics. 2013(10). 44–44. 73 indexed citations
8.
Hamann, Jan, Steen Hannestad, Georg G. Raffelt, Irene Tamborra, & Yvonne Y. Y. Wong. (2012). Sterile neutrino constraints from cosmology. Journal of Physics Conference Series. 375(3). 32003–32003. 1 indexed citations
9.
Hamann, Jan. (2012). Evidence for extra radiation? Profile likelihood versus Bayesian posterior. Journal of Cosmology and Astroparticle Physics. 2012(3). 21–21. 38 indexed citations
10.
Arina, Chiara, Jan Hamann, & Yvonne Y. Y. Wong. (2011). A Bayesian view of the current status of dark matter direct searches. Journal of Cosmology and Astroparticle Physics. 2011(9). 22–22. 37 indexed citations
11.
Hamann, Jan, Steen Hannestad, Georg G. Raffelt, & Yvonne Y. Y. Wong. (2011). Sterile neutrinos with eV masses in cosmology — How disfavoured exactly?. Journal of Cosmology and Astroparticle Physics. 2011(9). 34–34. 123 indexed citations
12.
Hamann, Jan, Steen Hannestad, Georg G. Raffelt, Irene Tamborra, & Yvonne Y. Y. Wong. (2010). Cosmology Favoring Extra Radiation and Sub-eV Mass Sterile Neutrinos as an Option. Physical Review Letters. 105(18). 181301–181301. 160 indexed citations
13.
Hamann, Jan, A. Balbi, J. Lesgourgues, & Claudia Quercellini. (2009). Optimising Boltzmann codes for the PLANCK era. Journal of Cosmology and Astroparticle Physics. 2009(4). 11–11. 4 indexed citations
14.
Hamann, Jan, J. Lesgourgues, & Wessel Valkenburg. (2008). How to constrain inflationary parameter space with minimal priors. Journal of Cosmology and Astroparticle Physics. 2008(4). 16–16. 11 indexed citations
15.
Hamann, Jan, Steen Hannestad, A. Melchiorri, & Yvonne Y. Y. Wong. (2008). Non-linear corrections to the cosmological matter power spectrum and scale-dependent galaxy bias: implications for parameter estimation. Journal of Cosmology and Astroparticle Physics. 2008(7). 17–17. 19 indexed citations
16.
Valkenburg, Wessel, Lawrence M. Krauss, & Jan Hamann. (2008). Impact of prior assumptions on Bayesian estimates of inflation parameters and the expected gravitational waves signal from inflation. Physical review. D. Particles, fields, gravitation, and cosmology. 78(6). 7 indexed citations
17.
Hamann, Jan & Yvonne Y. Y. Wong. (2008). The effects of cosmic microwave background (CMB) temperature uncertainties on cosmological parameter estimation. Journal of Cosmology and Astroparticle Physics. 2008(3). 25–25. 8 indexed citations
18.
Hamann, Jan, Steen Hannestad, Martin S. Sloth, & Yvonne Y. Y. Wong. (2007). How robust are inflation model and dark matter constraints from cosmological data?. Physical review. D. Particles, fields, gravitation, and cosmology. 75(2). 32 indexed citations
19.
Hamann, Jan, Laura Covi, A. Melchiorri, & Anže Slosar. (2007). New constraints on oscillations in the primordial spectrum of inflationary perturbations. Physical review. D. Particles, fields, gravitation, and cosmology. 76(2). 92 indexed citations
20.
Covi, Laura, et al.. (2006). Inflation and WMAP three year data: Features are still present. Physical review. D. Particles, fields, gravitation, and cosmology. 74(8). 104 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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