M. T. Murphy

12.6k citations

196 papers · 7.2k · 3 hit papers · h-index 47

Impact in

Astronomy and Astrophysics top 0.2%
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Cosmology and Gravitation Theories
- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
Instrumentation top 1%
- Astronomy and Astrophysical Research

Papers in

Astronomy and Astrophysics 154
- Galaxies: Formation, Evolution, Phenomena 108
- Stellar, planetary, and galactic studies 78
- Astrophysics and Star Formation Studies 78
- Astrophysical Phenomena and Observations 23
- Cosmology and Gravitation Theories 17
- Gamma-ray bursts and supernovae 16
Instrumentation 47
- Astronomy and Astrophysical Research 46

Co-authors: John K. Webb (35 shared papers)J. X. Prochaska (21 shared papers)Christopher W. Churchill (22 shared papers)V. V. Flambaum (15 shared papers)V. V. Flambaum (4 shared papers)Glenn G. Kacprzak (20 shared papers)R. F. Carswell (11 shared papers)Arthur M. Wolfe (4 shared papers)
Journals: Monthly Notices of the Royal Astronomical Society (83 papers)Astronomy and Astrophysics (13 papers)The Astrophysical Journal (12 papers)Physical Review Letters (7 papers)Monthly Notices of the Royal Astronomical Society Letters (6 papers)
Partner nations: Australia United States United Kingdom

In The Last Decade

M. T. Murphy

185 papers receiving 6.8k citations

M. T. Murphy's Hit Papers

align trajectories log scale

Indications of a Spatial Variation of the Fine Structure Constant 2011 · 318 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.

2011 Physical Review Letters
2008 Science
2001 Physical Review Letters

Peers

Countries citing papers authored by M. T. Murphy

Since Specialization

Citations

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

Fields of papers citing papers by M. T. Murphy

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside M. T. Murphy, 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 M. T. Murphy Line = papers co-authored together M. T. Murphy links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 196 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Further Evidence for Cosmological Evolution of the Fine Structure Constant Physical Review Letters ·John K. Webb, M. T. Murphy, V. V. Flambaum, V. A. Dzuba, John D. Barrow, Christopher W. Churchill, J. X. Prochaska, Arthur M. Wolfe Hit paper breakdown →	2001	534
2	Laser Frequency Combs for Astronomical Observations Science ·Tilo Steinmetz, Tobias Wilken, Constanza Araujo-Hauck, Ronald Holzwarth, Theodor W. Hänsch, L. Pasquini, A. Manescau, S. D’Odorico, M. T. Murphy, T. Kentischer, Wolfgang Schmidt, Thomas Udem Hit paper breakdown →	2008	461
3	Further evidence for a variable fine-structure constant from Keck/HIRES QSO absorption spectra Monthly Notices of the Royal Astronomical Society ·M. T. Murphy, John K. Webb, V. V. Flambaum	2003	336
4	Indications of a Spatial Variation of the Fine Structure Constant Physical Review Letters ·John K. Webb, Julian A. King, M. T. Murphy, V. V. Flambaum, R. F. Carswell, Matthew Bainbridge Hit paper breakdown →	2011	318
5	Possible evidence for a variable fine-structure constant from QSO absorption lines: motivations, analysis and results Monthly Notices of the Royal Astronomical Society ·M. T. Murphy, John K. Webb, V. V. Flambaum, V. A. Dzuba, Christopher W. Churchill, J. X. Prochaska, J. D. Barrow, Arthur M. Wolfe	2001	207
6	Signatures of Cool Gas Fueling a Star-Forming Galaxy at Redshift 2.3 Science ·N. Bouché, M. T. Murphy, Glenn G. Kacprzak, Céline Péroux, T. Contini, Crystal L. Martin, M. Dessauges‐Zavadsky	2013	148
7	The Giant Gemini GMOS survey of zem > 4.4 quasars – I. Measuring the mean free path across cosmic time Monthly Notices of the Royal Astronomical Society ·G. Worseck, J. X. Prochaska, John M. O’Meara, George D. Becker, Sara L. Ellison, Sebastián López, Avery Meiksin, Brice Ménard, M. T. Murphy, Michele Fumagalli	2014	142
8	Rapid Injection NMR in Mechanistic Organocopper Chemistry. Preparation of the Elusive Copper(III) Intermediate Journal of the American Chemical Society ·Steven H. Bertz, Stephen K. Cope, M. T. Murphy, Craig A. Ogle, Brad J. Taylor	2007	135
9	Strong Limit on a Variable Proton-to-Electron Mass Ratio from Molecules in the Distant Universe Science ·M. T. Murphy, V. V. Flambaum, S. Müller, C. Henkel	2008	117
10	Deuterium abundance in the most metal-poor damped Lyman alpha system: converging on Ω_b,0h² Monthly Notices of the Royal Astronomical Society ·Max Pettini, Berkeley J. Zych, M. T. Murphy, Antony Lewis, Charles C. Steidel	2008	109
11	The neutral hydrogen cosmological mass density atz= 5 Monthly Notices of the Royal Astronomical Society ·Neil H. M. Crighton, M. T. Murphy, J. X. Prochaska, G. Worseck, Marc Rafelski, George D. Becker, Sara L. Ellison, Michele Fumagalli, Sebastián López, Avery Meiksin, John M. O’Meara	2015	108
12	Preparation of σ- and π-Allylcopper(III) Intermediates in S_N2 and S_N2′ Reactions of Organocuprate(I) Reagents with Allylic Substrates Journal of the American Chemical Society ·Erika R. Bartholomew, Steven H. Bertz, Stephen K. Cope, M. T. Murphy, Craig A. Ogle	2008	94
13	A high-velocity narrow absorption line outflow in the quasar J212329.46 − 005052.9 Monthly Notices of the Royal Astronomical Society ·Fred Hamann, Nissim Kanekar, J. X. Prochaska, M. T. Murphy, Sara L. Ellison, A. L. Malec, Nikola Milutinović, W. Ubachs	2010	93
14	New perspectives on strong z≃ 0.5 Mg ii absorbers: are halo mass and equivalent width anticorrelated? Monthly Notices of the Royal Astronomical Society ·N. Bouché, M. T. Murphy, Céline Péroux, István Csabai, Vivienne Wild	2006	91
15	Further constraints on variation of the fine-structure constant from alkali-doublet QSO absorption lines Monthly Notices of the Royal Astronomical Society ·M. T. Murphy, John K. Webb, V. V. Flambaum, J. X. Prochaska, Arthur M. Wolfe	2001	90
16	HALO GAS CROSS SECTIONS AND COVERING FRACTIONS OF Mg II ABSORPTION SELECTED GALAXIES The Astronomical Journal ·Glenn G. Kacprzak, Christopher W. Churchill, Charles C. Steidel, M. T. Murphy	2008	89
17	Possible evidence for a variable fine-structure constant from QSO absorption lines: systematic errors Monthly Notices of the Royal Astronomical Society ·M. T. Murphy, John K. Webb, V. V. Flambaum, Christopher W. Churchill, J. X. Prochaska	2001	85
18	Organocuprate Cross‐Coupling: The Central Role of the Copper(III) Intermediate and the Importance of the Copper(I) Precursor Angewandte Chemie International Edition ·Steven H. Bertz, Stephen K. Cope, Donna C. Dorton, M. T. Murphy, Craig A. Ogle	2007	82
19	Metal-enriched, subkiloparsec gas clumps in the circumgalactic medium of a faint z = 2.5 galaxy★ Monthly Notices of the Royal Astronomical Society ·Neil H. M. Crighton, Joseph F. Hennawi, Robert A. Simcoe, Kathy L. Cooksey, M. T. Murphy, Michele Fumagalli, J. X. Prochaska, T. Shanks	2014	82
20	The UVES Large Program for testing fundamental physics I. Bounds on a change inαtowards quasar HE 2217−2818 Astronomy and Astrophysics ·P. Molaro, M. Centurión, J. B. Whitmore, T. M. Evans, M. T. Murphy, I. I. Agafonova, P. Bonifacio, S. D’Odorico, S. A. Levshakov, Sebastián López, C. J. A. P. Martins, P. Petitjean, H. Rahmani, D. Reimers, R. Srianand, G. Vladilo, Martin Wendt	2013	81

About M. T. Murphy

M. T. Murphy is a scholar working on Astronomy and Astrophysics, Instrumentation, Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics and Statistics, Probability and Uncertainty, having authored 196 papers that have together received 7.2k indexed citations. Recurring topics across this work include Galaxies: Formation, Evolution, Phenomena (108 papers), Stellar, planetary, and galactic studies (78 papers), Astrophysics and Star Formation Studies (78 papers), Astronomy and Astrophysical Research (46 papers), Astrophysical Phenomena and Observations (23 papers), Cosmology and Gravitation Theories (17 papers), Astrophysics and Cosmic Phenomena (17 papers) and Gamma-ray bursts and supernovae (16 papers). The work is most often cited by research in Astronomy and Astrophysics (5.3k citations), Instrumentation (947 citations), Nuclear and High Energy Physics (1.9k citations), Atomic and Molecular Physics, and Optics (1.4k citations) and Statistics, Probability and Uncertainty (216 citations). M. T. Murphy has collaborated with scholars based in Australia, United States and United Kingdom. Frequent co-authors include John K. Webb, J. X. Prochaska, Christopher W. Churchill, V. V. Flambaum, V. V. Flambaum, Glenn G. Kacprzak, R. F. Carswell, Arthur M. Wolfe, V. A. Dzuba and S. J. Curran. Their work appears in journals such as Monthly Notices of the Royal Astronomical Society, Astronomy and Astrophysics, The Astrophysical Journal, Physical Review Letters and Monthly Notices of the Royal Astronomical Society Letters.

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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M. T. Murphy's Hit Papers

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