Michael P. Ryan

2.2k total citations
66 papers, 1.0k citations indexed

About

Michael P. Ryan is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Statistical and Nonlinear Physics. According to data from OpenAlex, Michael P. Ryan has authored 66 papers receiving a total of 1.0k indexed citations (citations by other indexed papers that have themselves been cited), including 54 papers in Astronomy and Astrophysics, 39 papers in Nuclear and High Energy Physics and 22 papers in Statistical and Nonlinear Physics. Recurrent topics in Michael P. Ryan's work include Cosmology and Gravitation Theories (42 papers), Black Holes and Theoretical Physics (33 papers) and Relativity and Gravitational Theory (15 papers). Michael P. Ryan is often cited by papers focused on Cosmology and Gravitation Theories (42 papers), Black Holes and Theoretical Physics (33 papers) and Relativity and Gravitational Theory (15 papers). Michael P. Ryan collaborates with scholars based in Mexico, United States and United Kingdom. Michael P. Ryan's co-authors include M. Rosenbaum, Karel Kuchař, Sergio A. Hojman, Richard A. Matzner, L. C. Shepley, Vincent Moncrief, Octavio Obregón, R. A. Breuer, Sarah Shandera and Donghui Jeong and has published in prestigious journals such as Nature, The Astrophysical Journal and Monthly Notices of the Royal Astronomical Society.

In The Last Decade

Michael P. Ryan

64 papers receiving 960 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Michael P. Ryan Mexico 17 847 721 443 157 38 66 1.0k
Janna Levin United States 25 1.6k 1.9× 927 1.3× 406 0.9× 101 0.6× 35 0.9× 54 1.7k
G.M. Shore United Kingdom 26 966 1.1× 1.6k 2.3× 409 0.9× 358 2.3× 25 0.7× 79 1.9k
Paweł O. Mazur United States 24 1.9k 2.2× 1.8k 2.5× 663 1.5× 323 2.1× 55 1.4× 51 2.3k
Luigi Pilo Italy 20 1.2k 1.4× 1.4k 2.0× 233 0.5× 88 0.6× 59 1.6× 50 1.6k
D.V. Gal’tsov Russia 28 2.2k 2.6× 2.1k 3.0× 694 1.6× 241 1.5× 29 0.8× 125 2.4k
Ru-Keng Su China 25 1.5k 1.8× 1.6k 2.3× 314 0.7× 311 2.0× 57 1.5× 95 1.9k
Fiorenzo Bastianelli Italy 22 742 0.9× 1.2k 1.6× 451 1.0× 264 1.7× 15 0.4× 71 1.3k
Arvind Borde United States 13 985 1.2× 913 1.3× 328 0.7× 210 1.3× 25 0.7× 24 1.2k
Jiřı́ Bičák Czechia 24 1.8k 2.1× 1.4k 2.0× 376 0.8× 145 0.9× 63 1.7× 103 1.9k
M. Demiański Poland 21 1.5k 1.7× 1.0k 1.4× 321 0.7× 101 0.6× 104 2.7× 84 1.6k

Countries citing papers authored by Michael P. Ryan

Since Specialization
Citations

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

Fields of papers citing papers by Michael P. Ryan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Michael P. Ryan. 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 Michael P. Ryan. The network helps show where Michael P. Ryan may publish in the future.

Co-authorship network of co-authors of Michael P. Ryan

This figure shows the co-authorship network connecting the top 25 collaborators of Michael P. Ryan. A scholar is included among the top collaborators of Michael P. Ryan 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 Michael P. Ryan. Michael P. Ryan 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.
Jeong, Donghui, et al.. (2022). Molecular Chemistry for Dark Matter. II. Recombination, Molecule Formation, and Halo Mass Function in Atomic Dark Matter. The Astrophysical Journal. 934(2). 121–121. 12 indexed citations
2.
Ryan, Michael P., et al.. (2022). Molecular Chemistry for Dark Matter. The Astrophysical Journal. 934(2). 120–120. 15 indexed citations
3.
Ryan, Michael P., et al.. (2022). Molecular Chemistry for Dark Matter. III. DarkKROME. The Astrophysical Journal. 934(2). 122–122. 12 indexed citations
4.
Ryan, Michael P., et al.. (2022). A Lower Bound on the Mass of Compact Objects from Dissipative Dark Matter. The Astrophysical Journal Letters. 939(1). L12–L12. 17 indexed citations
5.
Singh, D., Michael P. Ryan, R. M. Magee, et al.. (2021). Gravitational-wave limit on the Chandrasekhar mass of dark matter. Physical review. D. 104(4). 15 indexed citations
6.
Obregón, Octavio, et al.. (2017). Modified entropies, their corresponding Newtonian forces, potentials, and temperatures. Physical review. D. 95(12). 15 indexed citations
7.
Ryan, Michael P., et al.. (2015). Homogeneous Relativistic Cosmologies. Princeton University Press eBooks. 53 indexed citations
8.
Nieto, J. A., et al.. (2004). DUALITY SYMMETRY IN KALUZA–KLEIN (n+D+d)-DIMENSIONAL COSMOLOGICAL MODEL. International Journal of Modern Physics A. 19(13). 2131–2147. 2 indexed citations
9.
Obregón, Octavio, Hernando Quevedo, & Michael P. Ryan. (2004). Time and “angular” dependent backgrounds from stationary axisymmetric solutions. Physical review. D. Particles, fields, gravitation, and cosmology. 70(6). 6 indexed citations
10.
Cruz-Pacheco, Gustavo, Antonmaria A. Minzoni, Pablo Padilla, et al.. (2003). On the possibility of wormhole formation due to quantum effects in the gravitational collapse of a small dust shell. Revista Mexicana de Física. 49(2). 122–124. 2 indexed citations
11.
Obregón, Octavio, Hernando Quevedo, & Michael P. Ryan. (2001). Kerr metric as an exact solution for unpolarizedS1×S2Gowdy models. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 65(2). 9 indexed citations
12.
Obregón, Octavio & Michael P. Ryan. (1998). QUANTUM PLANCK SIZE BLACK HOLE STATES WITHOUT A HORIZON. Modern Physics Letters A. 13(40). 3251–3258. 15 indexed citations
13.
Hu, B. L., Michael P. Ryan, & C. V. Vishveshwara. (1993). Papers in honor of Charles Misner. Cambridge University Press eBooks. 3 indexed citations
14.
Obregón, O., Jorge Pullin, & Michael P. Ryan. (1993). Bianchi cosmologies: New variables and a hidden supersymmetry. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 48(12). 5642–5647. 15 indexed citations
15.
Rosenbaum, M., Michael P. Ryan, & L. C. Shepley. (1979). Space–time homogeneous models with torsion. Journal of Mathematical Physics. 20(4). 744–751. 3 indexed citations
16.
Breuer, R. A., et al.. (1977). Some properties of spin-weighted spheroidal harmonics. Proceedings of the Royal Society of London A Mathematical and Physical Sciences. 358(1692). 71–86. 49 indexed citations
17.
DeWitt, Bryce S., C. Dewitt-Morette, David S. Evans, et al.. (1976). Gravitational deflection of light: solar eclipse of 30 June 1973 I. Description of procedures and final result.. 81. 452–454. 5 indexed citations
18.
Ryan, Michael P. & L. C. Shepley. (1976). Resource Letter RC-1: Cosmology. American Journal of Physics. 44(3). 223–230. 1 indexed citations
19.
Ryan, Michael P.. (1974). Hamiltonian cosmology: Death and transfiguration. Journal of Mathematical Physics. 15(6). 812–815. 16 indexed citations
20.
Ryan, Michael P.. (1972). The oscillatory regime near the singularity in Bianchi-type IX universes. Annals of Physics. 70(2). 301–322. 26 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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