T. M. Helliwell

674 total citations
40 papers, 470 citations indexed

About

T. M. Helliwell is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, T. M. Helliwell has authored 40 papers receiving a total of 470 indexed citations (citations by other indexed papers that have themselves been cited), including 31 papers in Astronomy and Astrophysics, 27 papers in Nuclear and High Energy Physics and 13 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in T. M. Helliwell's work include Black Holes and Theoretical Physics (27 papers), Cosmology and Gravitation Theories (25 papers) and Quantum Electrodynamics and Casimir Effect (8 papers). T. M. Helliwell is often cited by papers focused on Black Holes and Theoretical Physics (27 papers), Cosmology and Gravitation Theories (25 papers) and Quantum Electrodynamics and Casimir Effect (8 papers). T. M. Helliwell collaborates with scholars based in United States and United Kingdom. T. M. Helliwell's co-authors include D. A. Konkowski, George Thomas, J. G. Williams, A. John Mallinckrodt, W. A. Menard and G. Thomas and has published in prestigious journals such as The Astrophysical Journal, AIAA Journal and Physics Letters A.

In The Last Decade

T. M. Helliwell

39 papers receiving 448 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
T. M. Helliwell United States 12 337 311 215 148 16 40 470
F. Melchiorri Italy 13 462 1.4× 248 0.8× 120 0.6× 67 0.5× 4 0.3× 90 603
R. Klippert Brazil 9 415 1.2× 308 1.0× 206 1.0× 122 0.8× 7 0.4× 27 510
P. D. Morley United States 11 189 0.6× 408 1.3× 183 0.9× 44 0.3× 11 0.7× 40 531
G. Baumann France 11 156 0.5× 166 0.5× 78 0.4× 54 0.4× 11 0.7× 48 368
J.A. Grifols Spain 22 446 1.3× 1.6k 5.1× 163 0.8× 83 0.6× 9 0.6× 92 1.7k
V. V. Flambaum Australia 4 456 1.4× 269 0.9× 185 0.9× 54 0.4× 8 0.5× 5 637
Kyungsik Kang United States 17 199 0.6× 940 3.0× 83 0.4× 57 0.4× 6 0.4× 88 1.0k
A. Yu. Voronin Russia 13 163 0.5× 240 0.8× 605 2.8× 143 1.0× 17 1.1× 45 702
Wei-Tou Ni Taiwan 6 217 0.6× 131 0.4× 250 1.2× 100 0.7× 4 0.3× 13 452
B. M. Roberts Australia 16 173 0.5× 439 1.4× 515 2.4× 67 0.5× 6 0.4× 36 773

Countries citing papers authored by T. M. Helliwell

Since Specialization
Citations

This map shows the geographic impact of T. M. Helliwell'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 T. M. Helliwell with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T. M. Helliwell more than expected).

Fields of papers citing papers by T. M. Helliwell

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by T. M. Helliwell. 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 T. M. Helliwell. The network helps show where T. M. Helliwell may publish in the future.

Co-authorship network of co-authors of T. M. Helliwell

This figure shows the co-authorship network connecting the top 25 collaborators of T. M. Helliwell. A scholar is included among the top collaborators of T. M. Helliwell 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 T. M. Helliwell. T. M. Helliwell 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.
Konkowski, D. A., J. G. Williams, & T. M. Helliwell. (2018). Quantum singularities in self-similar spacetimes. General Relativity and Gravitation. 51(1). 18 indexed citations
2.
Konkowski, D. A. & T. M. Helliwell. (2016). Understanding singularities — Classical and quantum. International Journal of Modern Physics A. 31(02n03). 1641007–1641007. 5 indexed citations
3.
Konkowski, D. A. & T. M. Helliwell. (2006). DEFINITION AND CLASSIFICATION OF SINGULARITIES IN GR: CLASSICAL AND QUANTUM. 1829–1831.
4.
5.
Konkowski, D. A. & T. M. Helliwell. (2002). QUANTUM SINGULARITY OF QUASIREGULAR SPACETIMES. 999–1000. 3 indexed citations
6.
Konkowski, D. A. & T. M. Helliwell. (1996). Improved Cauchy horizon stability conjecture. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 54(12). 7898–7901. 6 indexed citations
7.
Helliwell, T. M., et al.. (1996). Fermat’s principle and multiple imaging by gravitational lenses. American Journal of Physics. 64(1). 45–49. 4 indexed citations
8.
Helliwell, T. M. & D. A. Konkowski. (1993). Testing a stability conjecture for Cauchy horizons. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 47(10). 4322–4327. 15 indexed citations
9.
Helliwell, T. M. & D. A. Konkowski. (1992). Stability analysis of a nonscalar curvature singularity. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 46(4). 1424–1428. 6 indexed citations
10.
Helliwell, T. M. & D. A. Konkowski. (1990). Electromagnetic fields in Khan-Penrose spacetime. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 41(8). 2507–2511. 6 indexed citations
11.
Helliwell, T. M. & D. A. Konkowski. (1990). The linearized spacetime of superconducting cosmic strings. Physics Letters A. 143(9). 438–442. 4 indexed citations
12.
Konkowski, D. A. & T. M. Helliwell. (1988). Electromagnetic fields in a Taub-Nut-type cosmology. Physics Letters A. 129(5-6). 305–309. 5 indexed citations
13.
Helliwell, T. M. & D. A. Konkowski. (1987). Cosmic strings: Gravitation without local curvature. American Journal of Physics. 55(5). 401–407. 9 indexed citations
14.
Konkowski, D. A. & T. M. Helliwell. (1985). Cosmologies with quasiregular singularities. II. Stability considerations. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 31(6). 1195–1211. 21 indexed citations
15.
Konkowski, D. A. & T. M. Helliwell. (1982). “Taub-NUT-like” cosmologies. Physics Letters A. 91(4). 149–152. 6 indexed citations
16.
Helliwell, T. M. & A. John Mallinckrodt. (1975). Null geodesics in the extended Kerr manifold. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 12(10). 2993–3003. 5 indexed citations
17.
Helliwell, T. M., et al.. (1973). Tachyons in a gravitational field. ˜Il œNuovo cimento della Società italiana di fisica. B/˜Il œNuovo cimento B. 13(1). 82–90. 10 indexed citations
18.
Helliwell, T. M.. (1968). Introduction to Special Relativity. Medical Entomology and Zoology. 4 indexed citations
19.
Menard, W. A., George Thomas, & T. M. Helliwell. (1968). Experimental and theoretical study of molecular, continuum, and lineradiation from planetary atmospheres.. AIAA Journal. 6(4). 655–664. 7 indexed citations
20.
Helliwell, T. M.. (1964). Nodal Boundary Condition Method for Atomic Wave Functions and Transition Probabilities. Physical Review. 135(2A). A325–A331. 18 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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