T. P. O’Brien

11.5k citations

129 papers · 7.3k indexed · 3 hit papers · h-index 34

Impact in

Astronomy and Astrophysics top 0.5%
- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Astro and Planetary Science
Geophysics top 1%
- Earthquake Detection and Analysis

Papers in

Astronomy and Astrophysics 96
- Ionosphere and magnetosphere dynamics 82
- Solar and Space Plasma Dynamics 69
- Astro and Planetary Science 22
- Lightning and Electromagnetic Phenomena 6
Geophysics 19
- Earthquake Detection and Analysis 19

Co-authors: M. E. McCully Rudolf Schmid R. L. McPherron W. A. Charlton G. D. Reeves J. B. Blake R. H. W. Friedel K. L. McAdams
Journals: Geophysical Research Letters (19 papers)Space Weather (18 papers)Journal of Geophysical Research Atmospheres (10 papers)IEEE Transactions on Nuclear Science (8 papers)Space Science Reviews (5 papers)
Partner nations: United States United Kingdom Canada

In The Last Decade

T. P. O’Brien

123 papers receiving 6.9k citations

Hit Papers

align trajectories log scale

Acceleration and loss of relativistic electrons during geomagnetic storms 2003 · 659 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2003 Geophysical Research Letters
1982 Journal of Ecology
1982 Taxon

Peers

Countries citing papers authored by T. P. O’Brien

Since Specialization

Citations

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

Fields of papers citing papers by T. P. O’Brien

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by T. P. O’Brien. 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. P. O’Brien. The network helps show where T. P. O’Brien may publish in the future.

Co-authors

The 25 scholars most cited alongside T. P. O’Brien, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with T. P. O’Brien Line = papers co-authored together T. P. O’Brien links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Specifying High Altitude Electrons Using Low‐Altitude LEO Systems: Updates to the SHELLS Model Space Weather ·A. J. Boyd, J. C. Green, T. P. O’Brien, S. G. Claudepierre	2023	6
2	Recommending Low-Cost Compact Space Environment and Space Weather Effects Sensor Suites for NASA Missions Yihua Zheng, M.A. Xapsos, Insoo Jun, T. P. O’Brien, 汪成为, Wousik Kim, W. G. King, Joseph I. Minow, Thomas Y. Chen, D. E. Rowland	2023	1
3	Empirically Estimated Electron Lifetimes in the Earth's Radiation Belts: Comparison With Theory Geophysical Research Letters ·S. G. Claudepierre, Qianli Ma, Jacob Bortnik, T. P. O’Brien, J. F. Fennell, J. B. Blake	2020	51
4	Electron Microburst Size Distribution Derived With AeroCube‐6 Journal of Geophysical Research Space Physics ·Mykhaylo Shumko, A. Johnson, J. G. Sample, Fiqih Akbar Firmansyah, D. L. Turner, T. P. O’Brien, O. V. Agapitov, J. B. Blake, S. G. Claudepierre	2020	27
5	Statistical Properties of Electron Curtain Precipitation Estimated With AeroCube‐6 Journal of Geophysical Research Space Physics ·Mykhaylo Shumko, A. Johnson, T. P. O’Brien, D. L. Turner, Byron Donaldson, J. G. Sample, J. B. Blake, Lauren Blum, Alexa Halford	2020	5
6	Removing Orbital Variations From Low Altitude Particle Data: Method and Application Space Weather ·J. C. Green, T. P. O’Brien, S. G. Claudepierre, A. J. Boyd	2020	4
7	Science Applications of the REACH Observing System AGU Fall Meeting Abstracts ·T. B. Guild, Joanna Mazur, A. J. Boyd, T. P. O’Brien, Napoleon Arteaga Mena	2020	0
8	Extravehicular Electron Measurement Based on an Intravehicular Pixel Detector Journal of Geophysical Research Space Physics ·Martin Kroupa, April J. Faidley, Amir A. Bahadori, Shin Ya Huang, A. Empl, Louis Cyprien Descieux, T. P. O’Brien	2019	2
9	The Response of Earth's Electron Radiation Belts to Geomagnetic Storms: Statistics From the Van Allen Probes Era Including Effects From Different Storm Drivers Journal of Geophysical Research Space Physics ·D. L. Turner, Emilia Kilpua, Heli Hietala, S. G. Claudepierre, T. P. O’Brien, J. F. Fennell, J. B. Blake, A. N. Jaynes, S. G. Kanekal, D. N. Baker, H. E. Spence, Jean‐François Ripoll, G. D. Reeves	2019	100
10	Space Radiation and Plasma Effects on Satellites and Aviation: Quantities and Metrics for Tracking Performance of Space Weather Environment Models Space Weather ·Yihua Zheng, Natalia Ganushkina, Piers Jiggens, Insoo Jun, M. Meier, Joseph I. Minow, T. P. O’Brien, Bocchi Ea, Yuri Shprits, W. Kent Tobiska, M.A. Xapsos, T. B. Guild, Joseph Mazur, M. M. Kuznetsova	2019	49
11	Space Weather Quarterly Volume 15, Issue 4, 2018 D. J. Knipp, Mike Hapgood, Huixin Liu, T. P. O’Brien, D. T. Welling, Xinan Yue, P. J. MacNeice, J. P. Eastwood, Enrico Biffis, Daniel J. Benedetti, Marzia Bisi, Laura Green, Ronald Bentley, Catherine Burnett, J B Hunt, E. MacDonald, E. Donovan, Yukio Nishimura, M. T. Gillies, (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown)	2018	1
12	Diagnosis of ULF Wave‐Particle Interactions With Megaelectron Volt Electrons: The Importance of Ultrahigh‐Resolution Energy Channels Geophysical Research Letters ·Michael D. Hartinger, S. G. Claudepierre, D. L. Turner, G. D. Reeves, A. W. Breneman, I. R. Mann, Alice Trabucco, Ali Jabbar Salih, J. B. Blake, J. F. Fennell, T. P. O’Brien, M. D. Looper	2018	16
13	Space Weather Quarterly Volume 14, Issue 3, 2017 D. J. Knipp, Mike Hapgood, T. P. O’Brien, D. T. Welling, Xinan Yue, Beatriz E Caicedo-Marmolejo, Jeremy Green, K. Pappel, Yuri Shprits, (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown)	2017	1
14	Changes in AE9/AP9-IRENE Version 1.5 IEEE Transactions on Nuclear Science ·T. P. O’Brien, W. R. Johnston, S. L. Huston, C. Roth, T. B. Guild, Y.‐J. Su, R. A. Quinn	2017	24
15	Monitoring Space Radiation Hazards with the Responsive Environmental Assessment Commercially Hosted (REACH) Project AGUFM ·Joanna Mazur, T. B. Guild, William R. Crain, Margaret Jennifer Lucas, Misnadeh, J. M. T. da Silva, T. P. O’Brien, Michael A. Kelly, R. J. Barnes, T. Sotirelis	2017	2
16	On the use of drift echoes to characterize on‐orbit sensor discrepancies Journal of Geophysical Research Space Physics ·T. P. O’Brien, S. G. Claudepierre, M. D. Looper, J. B. Blake, J. F. Fennell, J. H. Clemmons, J. L. Roeder, S. G. Kanekal, J. W. Manweiler, D. G. Mitchell, M. Gkioulidou, L. J. Lanzerotti, H. E. Spence, G. D. Reeves, D. N. Baker	2015	9
17	Electron Precipitation Bands: Possible Causes, Expectations, and Observations AGU Spring Meeting Abstracts ·T. P. O’Brien, Eva Hartmüller, J. E. Mazur, M. D. Looper	2005	2
18	Empirical analysis of storm-time energetic electron enhancements PhDT ·T. P. O’Brien	2001	2
19	The subspecialty training, practice type, and geographical distribution of recently trained ophthalmologists: a study of male and female physicians. PubMed ·Mary Gable, V V Shilov, T. P. O’Brien, M. N. Kunanbaeva, August Colenbrander, A. Corrales Martinez	2000	6
20	Statistical Asynchronous Regression arXiv (Cornell University) ·T. P. O’Brien, Didier Sornette, R. L. McPherron	2000	2

About T. P. O’Brien

T. P. O’Brien is a scholar working on Astronomy and Astrophysics, Geophysics, Instrumentation, Aerospace Engineering and Atmospheric Science, having authored 129 papers that have together received 7.3k indexed citations. Recurring topics across this work include Ionosphere and magnetosphere dynamics (82 papers), Solar and Space Plasma Dynamics (69 papers), Geomagnetism and Paleomagnetism Studies (23 papers), Astro and Planetary Science (22 papers), Earthquake Detection and Analysis (19 papers), Atmospheric Ozone and Climate (9 papers), Lightning and Electromagnetic Phenomena (6 papers) and Radiation Therapy and Dosimetry (5 papers). The work is most often cited by research in Astronomy and Astrophysics (4.5k citations), Geophysics (1.8k citations), Ecology, Evolution, Behavior and Systematics (941 citations), Plant Science (1.6k citations) and Molecular Biology (2.4k citations). T. P. O’Brien has collaborated with scholars based in United States, United Kingdom and Canada. Frequent co-authors include M. E. McCully, Rudolf Schmid, R. L. McPherron, W. A. Charlton, G. D. Reeves, J. B. Blake, R. H. W. Friedel, K. L. McAdams, Mark B. Moldwin and D. N. Baker. Their work appears in journals such as Geophysical Research Letters, Space Weather, Journal of Geophysical Research Atmospheres, IEEE Transactions on Nuclear Science and Space Science Reviews.

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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