The DOI matches its Crossref record; 112 of the 115 references it cites were found in a registry or an index.
Further evidence for a variable fine-structure constant from Keck/HIRES QSO absorption spectra
Open accessAbstract
We have previously presented evidence for a varying fine-structure constant, α, in two independent samples of Keck/HIRES quasi-stellar object (QSO) absorption spectra. Here we present a detailed many-multiplet analysis of a third Keck/HIRES sample containing 78 absorption systems. We also re-analyse the previous samples, providing a total of 128 absorption systems over the redshift range 0.2 < zabs < 3.7. The results, with raw statistical errors, indicate a smaller weighted mean α in the absorption clouds: Δα/α= (−0.574 ± 0.102) × 10−5. All three samples separately yield consistent and significant values of Δα/α. The analyses of low-z (i.e. zabs < 1.8) and high-z systems rely on different ions and transitions with very different dependences on α, yet they also give consistent results. We identify an additional source of random error in 22 high-z systems characterized by transitions with a large dynamic range in apparent optical depth. Increasing the statistical errors on Δα/α for these systems gives our fiducial result, a weighted mean Δα/α= (−0.543 ± 0.116) × 10−5, representing 4.7σ evidence for a varying α. Assuming that Δα/α= 0 at zabs= 0, the data marginally prefer a linear increase in α with time rather than a constant offset from the laboratory value: . The two-point correlation function for α is consistent with zero over 0.2–13 Gpc comoving scales and the angular distribution of Δα/α shows no significant dipolar anisotropy. We therefore have no evidence for spatial variations in Δα/α. We extend our previous searches for possible systematic errors, giving detailed analyses of potential kinematic effects, line blending, wavelength miscalibration, spectrograph temperature variations, atmospheric dispersion and isotopic/hyperfine structure effects. The latter two are potentially the most significant. However, overall, known systematic errors do not explain the results. Future many-multiplet analyses of independent QSO spectra from different telescopes and spectrographs will provide a now crucial check on our Keck/HIRES results.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“The claim by (Webb et al. 1999;Murphy et al. 2003;King et al. 2012a) that the Keck/HIRES data indicated that the fine structure constant was smaller in the past relaunched the interest in fundamental constants, both from an experimental and theoretical point of view.”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Murphy et al. 2003
In the citing paper
“The analysis (Murphy et al. 2003) relies on 128 absorption spectra, later updated (Murphy et al. 2004) to include 143 absorption systems.”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Murphy et al. 2003
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
CRC Handbook of Chemistry and Physics
(2014) · doi:10.1201/b17118 · Cited by 57,706
Statistical Methods for Research Workers
Fisher, R. A. (1945) · American Journal of Clinical Pathology · doi:10.1093/ajcp/15.11.552b · Cited by 10,883
Handbook of Chemistry and Physics
(1937) · Journal of AOAC INTERNATIONAL · doi:10.1093/jaoac/20.1.142a · Cited by 4,759
Quantum Mechanics of One- and Two-Electron Systems
Bethe, H. A., & Salpeter, E. E. (1957) · Handbuch der Physik · doi:10.1007/978-3-642-45869-9_2 · Cited by 4,677
Handbook of Chemistry and Physics.
(1973) · Annals of Internal Medicine · doi:10.7326/0003-4819-79-6-934_3 · Cited by 2,559
CODATA recommended values of the fundamental physical constants: 2010
Mohr, P. J., Taylor, B. N., & Newell, D. B. (2012) · Reviews of Modern Physics · doi:10.1103/revmodphys.84.1527 · Cited by 2,476
VALD–2: Progress of the Vienna Atomic Line Data Base
Kupka, F., Piskunov, N. E., Ryabchikova, T. A., Stempels, H. C., & Weiss, W. W. (1999) · Astronomy & Astrophysics Supplement Series · doi:10.1051/aas:1999267 · Cited by 1,572
Quantum Mechanics of One- and Two-Electron Atoms
Bethe, H. A., & Salpeter, E. E. (1977) · Springer eBooks · doi:10.1007/978-1-4613-4104-8 · Cited by 1,288
Edlén, B. (1966) · Metrologia · doi:10.1088/0026-1394/2/2/002 · Cited by 1,263
The fundamental constants and their variation: observational and theoretical status
Uzan, J. (2003) · Reviews of Modern Physics · doi:10.1103/revmodphys.75.403 · Cited by 1,214
Research works printed but not linked: 8
- Bahcall J.N., 2003, ApJ
- Bekenstein J.D., 1979, Comment. Astrophys., 8, 89
- J.C. Berengut, V.A. Dzuba, and V.V. Flambaum , 2003 , Phys. Rev. A , accepted (physics/0305068) · arXiv
- F.J. Dyson, A. Salam, and E.P. Wigner , 1972 , in, eds, Aspects of Quantum Theory . Cambridge Univ. Press, Cambridge, p. 213
- Jenniskens P., 1994, A&AS, 106, 39
- Martins C.J.A.P., 2003, Phys. Rev. Lett.
- Piskunov N.E., 1995, A&AS, 112, 525
- Varshalovich D.A., 1996, Astron. Lett., 22, 6
Cited by
Sorted by citations
Items 301–400 of 513
Liu, Z.-E., Liu, W., 张, T.-J. 同. Z., Zhai, Z., & Bora, K. (2021) · The Astrophysical Journal · doi:10.3847/1538-4357/ac2150 · Cited by 13
THE VALUE OF THE FINE STRUCTURE CONSTANT OVER COSMOLOGICAL TIMES
Gutiérrez, C. M., & López-Corredoira, M. (2010) · The Astrophysical Journal · doi:10.1088/0004-637x/713/1/46 · Cited by 13
SPACE-TIME VARIATION OF COUPLING CONSTANTS AND FUNDAMENTAL MASSES
Flambaum, V. V., & Berengut, J. C. (2009) · International Journal of Modern Physics A · doi:10.1142/s0217751x0904693x · Cited by 13
Self-citationEvolution of the fine-structure constant in the non-linear regime
Avelino, P. P., Martins, C. J. A. P., Menezes, J., & dos Santos, C. (2006) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2006/12/018 · Cited by 13
DO THE FUNDAMENTAL CONSTANTS CHANGE WITH TIME?
Kanekar, N. (2008) · Modern Physics Letters A · doi:10.1142/s0217732308028521 · Cited by 13
Cosmic strings in Bekenstein-type modelsPreprint
Menezes, J., Avelino, P., & dos Santos, C. (2004) · Cited by 13
Four direct measurements of the fine-structure constant 13 billion years ago
Wilczynska, M. R., Webb, J. K., Bainbridge, M., Barrow, J. D., Bosman, S. E. I., Carswell, R. F., Dąbrowski, M. P., Dumont, V., Lee, C.-C., Leite, A. C., et al. (2020) · Science Advances · doi:10.1126/sciadv.aay9672 · Cited by 13
Self-citationJiang, L.-H., Pan, Z., Aguilar, J., Ahlen, S., Blum, R., Brooks, D., Claybaugh, T., de la Macorra, A., Dey, A., Doel, P., et al. (2024) · Astrophysical Journal · doi:10.3847/1538-4357/ad47b4 · Cited by 8
Quantum Haplodynamics, Dark Matter, and Dark Energy
Harald Fritzsch, A., & Solà, J. (2014) · Advances in High Energy Physics · doi:10.1155/2014/361587 · Cited by 12
Chantler, C. T. (2009) · Radiation Physics and Chemistry · doi:10.1016/j.radphyschem.2009.07.022 · Cited by 12
Dzuba, V. A., & Flambaum, V. V. (2005) · Physical Review A · doi:10.1103/physreva.71.052509 · Cited by 12
Self-citationGacesa, M., & Côté, R. (2014) · Journal of Molecular Spectroscopy · doi:10.1016/j.jms.2014.03.005 · Cited by 13
Ruffoni, M. P., & Pickering, J. C. (2010) · The Astrophysical Journal · doi:10.1088/0004-637x/725/1/424 · Cited by 12
Transition frequency shifts with fine-structure constant variation for Yb II
Porsev, S. G., Flambaum, V. V., & Torgerson, J. R. (2009) · Physical Review A · doi:10.1103/physreva.80.042503 · Cited by 12
Self-citationVariation of the fine structure constant in light of recent helium abundance measurement
Seto, O., Takahashi, T., & Toda, Y. (2023) · Physical Review D · doi:10.1103/physrevd.108.023525 · Cited by 8
A NEW METHOD FOR DETECTING VELOCITY SHIFTS AND DISTORTIONS BETWEEN OPTICAL SPECTRA
Evans, T. M., & Murphy, M. T. (2013) · The Astrophysical Journal · doi:10.1088/0004-637x/778/2/173 · Cited by 11
Self-citationScóccola, C. G., Sánchez, A. G., Rubiño-Martín, J. A., Génova-Santos, R., Rebolo, R., Ross, A. J., Percival, W. J., Manera, M., Bizyaev, D., Brownstein, J. R., et al. (2013) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stt1143 · Cited by 11
Variations of nuclear binding with quark masses
Carrillo-Serrano, M. E., Cloët, I. C., Tsushima, K., Thomas, A. W., & Afnan, I. R. (2013) · Physical Review C · doi:10.1103/physrevc.87.015801 · Cited by 11
Cosmic variation of proton-to-electron mass ratio with an interacting Higgs scalar field
Chakrabarti, S. (2021) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stab1910 · Cited by 12
Berengut, J. C. (2011) · Physical Review A · doi:10.1103/physreva.84.052520 · Cited by 11
Searching for cosmological preferred axis using cosmographic approach
Salehi, A., & Setare, M. R. (2017) · General Relativity and Gravitation · doi:10.1007/s10714-017-2316-6 · Cited by 11
Lin, H.-N., Li, J., & Li, X. (2018) · The European Physical Journal C · doi:10.1140/epjc/s10052-018-5841-x · Cited by 11
Can we test Dark Energy with Running Fundamental Constants ?
Doran, M. (2004) · CERN Document Server (European Organization for Nuclear Research) · Cited by 11
A slitless spectroscopic survey for quasars near quasars
Worseck, G., Wisotzki, L., & Selman, F. (2008) · Astronomy and Astrophysics · doi:10.1051/0004-6361:200810157 · Cited by 11
Wavelength calibration of the C I line at 94.5 nm for comparison with quasar data
Labazan, I., Reinhold, E., Ubachs, W., & Flambaum, V. V. (2005) · Physical Review A · doi:10.1103/physreva.71.040501 · Cited by 11
Self-citationMenezes, J., Avelino, P. P., & dos Santos, C. (2005) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.72.103504 · Cited by 11
Probing Galactic variations in the fine-structure constant using solar twin stars: Systematic errors
Berke, D., Murphy, M. T., Flynn, C., & Liu, F. (2022) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stac2037 · Cited by 10
Self-citationTesting spatial α-variation with optical atomic clocks based on highly charged ions
Berengut, J. C., Flambaum, V. V., & Ong, A. (2013) · EPJ Web of Conferences · doi:10.1051/epjconf/20135702001 · Cited by 10
Self-citationSkidmore, W., Anupama, G. C., & Srianand, R. (2017) · Current Science · doi:10.18520/cs/v113/i04/639-648 · Cited by 10
Le, T. D. (2020) · Heliyon · doi:10.1016/j.heliyon.2020.e05011 · Cited by 10
Milestones of general relativity: Hubble’s law (1929) and the expansion of the universe
MacCallum, M. A. H. (2015) · Classical and Quantum Gravity · doi:10.1088/0264-9381/32/12/124002 · Cited by 10
Cosmic strings in Bekenstein-type models
Menezes, J., Avelino, P. P., & Santos, C. (2005) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2005/02/003 · Cited by 10
Ong, A., Berengut, J. C., & Flambaum, V. V. (2013) · Physical Review A · doi:10.1103/physreva.88.052517 · Cited by 10
Self-citationNon-linear electrodynamics and the variation of the fine structure constant
Mbelek, J. P., & Cuesta, H. J. M. (2008) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2008.13503.x · Cited by 10
Phase transition in the fine structure constant
Anchordoqui, L. A., Barger, V. D., Goldberg, H., & Marfatia, D. (2008) · Physics Letters B · doi:10.1016/j.physletb.2008.01.047 · Cited by 10
Atomic transition energies and the variation of the fine-structure constant α
Borschevsky, A., Eliav, E., Ishikawa, Y., & Kaldor, U. (2006) · Physical Review A · doi:10.1103/physreva.74.062505 · Cited by 10
Huberty, M., Scarlata, C. M., Hayes, M., & Gazagnes, S. (2025) · The Astrophysical Journal · doi:10.3847/1538-4357/add5e7 · Cited by 9
The variation of the fine structure constant: testing the dipole model with thermonuclear supernovae
Kraiselburd, L., Landau, S. J., Negrelli, C., & García-Berro, E. (2015) · Astrophysics and Space Science · doi:10.1007/s10509-015-2325-4 · Cited by 8
Fundamental physics with ESPRESSO: Constraining a simple parametrisation for varying α
da Fonseca, V., Barreiro, T., Nunes, N. J., Cristiani, S., Cupani, G., D’Odorico, V., Leite, A. C. O., Marques, C. M. J., Martins, C. J. A. P., Milaković, D., et al. (2022) · Astronomy and Astrophysics · doi:10.1051/0004-6361/202243795 · Cited by 9
Self-citationOng, A., Berengut, J. C., & Flambaum, V. V. (2014) · Springer tracts in modern physics · doi:10.1007/978-3-642-45201-7_9 · Cited by 9
Self-citationCONSTRAINTS ON THAWING SCALAR FIELD MODELS FROM FUNDAMENTAL CONSTANTS
GAO, Q., & GONG, Y. (2013) · International Journal of Modern Physics D · doi:10.1142/s0218271813500351 · Cited by 9
Variation of the fine-structure constant: an update of statistical analyses with recent data
Kraiselburd, L., Landau, S. J., & Simeone, C. (2013) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201321803 · Cited by 10
Frequency combs applications and optical frequency standards
Udem, T., & Riehle, F. (2007) · Max Planck Institute for Plasma Physics · doi:10.1393/ncr/i2007-10027-5 · Cited by 9
Implication of Spatial and Temporal Variations of the Fine-Structure Constant
Feng, S.-S., & Yan, M.-L. (2015) · International Journal of Theoretical Physics · doi:10.1007/s10773-015-2748-2 · Cited by 8
One Electron Atom in Special Relativity with de Sitter Space-Time Symmetry
Yan, M.-L. (2012) · Communications in Theoretical Physics · doi:10.1088/0253-6102/57/6/04 · Cited by 8
Le, T. D. (2016) · Astrophysics · doi:10.1007/s10511-016-9434-9 · Cited by 9
Enhanced sensitivity to variation of fundamental constants in the narrow nuclear transitions (II)
He, X.-T., & Ren, Z. (2008) · Journal of Physics G Nuclear and Particle Physics · doi:10.1088/0954-3899/35/3/035106 · Cited by 8
Time Delay of Photons of Different Energies in Multidimensional Cosmological Models
Harko, T., & Cheng, K. S. (2004) · The Astrophysical Journal · doi:10.1086/422378 · Cited by 10
Time dependence of the proton-to-electron mass ratio
Petitjean, P., Ivanchik, A. V., Srianand, R., Aracil, B., Varshalovich, D. A., Chand, H., Rodriguez, E., Ledoux, C., & Boissé, P. (2004) · Comptes Rendus Physique · doi:10.1016/j.crhy.2004.04.007 · Cited by 8
Minazzoli, O. (2012) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.88.064050 · Cited by 7
Cosmic acceleration from varying masses in five dimensions
Moraes, P. H. R. S. (2015) · International Journal of Modern Physics D · doi:10.1142/s0218271816500097 · Cited by 7
Collisional perturbation of radio-frequency E1 transitions in an atomic beam of dysprosium
Cingöz, A., Nguyen, A.-M. N., Budker, D., Lamoreaux, S. K., Lapierre, A., & Torgerson, J. R. (2005) · Physical Review A · doi:10.1103/physreva.72.063409 · Cited by 7
Farajollahi, H., & Salehi, A. (2012) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2012/11/002 · Cited by 7
Universe acceleration and fine structure constant variation in BSBM theory
Farajollahi, H., & Salehi, A. (2012) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2012/02/041 · Cited by 7
Le, T. D. (2018) · Symmetry · doi:10.3390/sym10120722 · Cited by 7
Blain, A. W., Carilli, C. L., & Darling, J. (2004) · New Astronomy Reviews · doi:10.1016/j.newar.2004.09.009 · Cited by 7
A laboratory search for variation of the fine-structure constant using atomic dysprosium
Cingöz, A., Leefer, N., Ferrell, S. J., Lapierre, A., Nguyen, A.-M. N., Yashchuk, V. V., Budker, D., Lamoreaux, S. K., & Torgerson, J. R. (2008) · The European Physical Journal Special Topics · doi:10.1140/epjst/e2008-00810-0 · Cited by 7
Cosmological variation of the fine-structure constant versus a new interaction
Angstmann, E., Flambaum, V. V., & Karshenboim, S. G. (2004) · Physical Review A · doi:10.1103/physreva.70.044104 · Cited by 7
Self-citationOn generalized theories of varying fine structure constant
Chakrabarti, S. (2022) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stac979 · Cited by 7
Coefficients for sensitivity of fine-structure transitions in carbonlike ions to α variation
Kozlov, M. G., Tupitsyn, I. I., & Reimers, D. (2009) · Physical Review A · doi:10.1103/physreva.79.022117 · Cited by 6
Fundamental physical constants
Harald Fritzsch, A. (2009) · Uspekhi Fizicheskih Nauk · doi:10.3367/ufnr.0179.200904d.0383 · Cited by 6
Direct Measurement of Quasar Outflow Wind Acceleration* † ‡
Misawa, T., Eracleous, M., Charlton, J. C., & Kashikawa, N. (2019) · The Astrophysical Journal · doi:10.3847/1538-4357/aaf0fe · Cited by 6
Le, T. D. (2019) · Symmetry · doi:10.3390/sym11070936 · Cited by 6
Coupling quintessence kinetics to electromagnetism
Barros, B. J., & da Fonseca, V. (2023) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2023/06/048 · Cited by 7
Space clocks to test relativiy: ACES and SAGAS
Wolf, P., Salomon, C., & Reynaud, S. (2009) · Proceedings of the International Astronomical Union · doi:10.1017/s1743921309990676 · Cited by 6
Thermodynamics in variable speed of light theories
Racker, J., Sisterna, P., & Vucetich, H. (2009) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.80.083526 · Cited by 7
Limits on the changes in the gravitational constant from nucleosynthesis
Al-Rawaf, A. S. (2007) · Astrophysics and Space Science · doi:10.1007/s10509-007-9498-4 · Cited by 6
A slitless spectroscopic survey for quasars near quasars
Worseck, G., Wisotzki, L., & Selman, F. J. (2008) · Springer Link (Chiba Institute of Technology) · doi:10.1051/0004-6361:200810157/pdf · Cited by 6
Trimble, V., & Aschwanden, M. J. (2005) · Publications of the Astronomical Society of the Pacific · doi:10.1086/429117 · Cited by 6
Sherman, J. A. (2009) · arXiv (Cornell University) · doi:10.48550/arxiv.0907.0459 · Cited by 7
Constraints on thawing scalar field models from fundamental constantsPreprint
Gao, Q., & Gong, Y. (2014) · Cited by 6
Cataldo, C. (2017) · Journal of Applied Mathematics and Physics · doi:10.4236/jamp.2017.55087 · Cited by 5
Big bang nucleosynthesis as a probe of fundamental ‘constants’
Dent, T., Stern, S., & Wetterich, C. (2007) · Journal of Physics G Nuclear and Particle Physics · doi:10.1088/0954-3899/35/1/014005 · Cited by 5
Amazingly precise optical atomic clocks are more than timekeepers
Mann, A. (2018) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1809852115 · Cited by 5
Can a variation of fine structure constant influence the fate of gravitational collapse?
Chakrabarti, S. (2023) · The European Physical Journal C · doi:10.1140/epjc/s10052-023-11877-1 · Cited by 6
Prause, N., & Reimers, D. (2013) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201118373 · Cited by 5
MOSQUERA, M. E., & Civitarese, O. (2010) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201016156 · Cited by 5
Spatial variation of fundamental constants: testing models with thermonuclear supernovae
Negrelli, C. S., Kraiselburd, L., Landau, S. J., & García-Berro, E. (2018) · El Servicio de Difusión de la Creación Intelectual (National University of La Plata) · Cited by 5
Laboratory search for time variation in the fine structure constant
Kolachevsky, N. (2004) · Uspekhi Fizicheskih Nauk · doi:10.3367/ufnr.0174.200411b.1171 · Cited by 5
Time variation of fine-structure constant constrained by [O iii ] emission-lines at 1.1 < z < 3.7
Li, G., Sun, L., Chen, X., & Zhou, H. (2023) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stad3240 · Cited by 5
Spatial variation of fundamental constants: Testing models with thermonuclear supernovae
Negrelli, C., Kraiselburd, L., Landau, S., & García-Berro, E. (2018) · International Journal of Modern Physics D · doi:10.1142/s0218271818500992 · Cited by 5
Berke, D., Murphy, M. T., Flynn, C., & Liu, F. (2022) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stac2458 · Cited by 5
Self-citationTesting General Relativity with Atomic Clocks
Reynaud, S., Salomon, C., & Wolf, P. (2009) · Space sciences series of ISSI · doi:10.1007/978-1-4419-1362-3_18 · Cited by 5
High precision frequency calibration of N I lines in the XUV domain
Salumbides, E. J., Sprengers, J. P., Reinhold, E., & Ubachs, W. (2005) · Journal of Physics B Atomic Molecular and Optical Physics · doi:10.1088/0953-4075/38/23/l03 · Cited by 5
Big bang nucleosynthesis as a probe of fundamental “constants”Preprint
Dent, T., Stern, S., & WETTERICH, C. (2012) · Cited by 5
Lehnert, K. (2026) · Fortschritte der Physik · doi:10.1002/prop.70073 · Cited by 15
Curran, S. J. (2018) · Publications of the Astronomical Society of Australia · doi:10.1017/pasa.2018.28 · Cited by 4
Precision measurement of Mg+25 -ion D1 and D2 transition frequencies
Hao, P., Deng, K., Wu, F.-F., Ma, Z., Wei, W. Z., Yuan, W. H., Du, Y., Liu, H. L., Zhang, H. X., Pang, L., et al. (2023) · Physical Review A · doi:10.1103/physreva.107.l020803 · Cited by 4
Measuring the Time Variation of the Fine-structure Constant with Quasars Detected by LAMOST
Wei, J.-N., 陈, R.-J. 睿. C., 魏, J.-J. 俊. W., López-Corredoira, M., & Wu, X.-F. (2024) · Research in Astronomy and Astrophysics · doi:10.1088/1674-4527/ad9654 · Cited by 4
MacGibbon, J. H. (2009) · Physical Review Letters · doi:10.1103/physrevlett.102.069002 · Cited by 4
Observable effects of scalar fields and varying constants
Barrow, J. D., & Shaw, D. J. (2007) · General Relativity and Gravitation · doi:10.1007/s10714-007-0453-z · Cited by 4
Energy production in varyingαtheories
Kraiselburd, L., Bertolami, M. M. M., Sisterna, P., & Vucetich, H. (2011) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201015970 · Cited by 4
The time variation of the fine structure constant: a statistical analysis of astronomical data
Landau, S. J., & Simeone, C. (2008) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20079125 · Cited by 4
Nassif, C., & de Faria, A. C. A. (2015) · Canadian Journal of Physics · doi:10.1139/cjp-2015-0515 · Cited by 5
Variation of the fine-structure constant from the de Sitter invariant special relativity
陈绍霞, 肖能超, & 闫沐霖 (2008) · Chinese Physics C · doi:10.1088/1674-1137/32/8/004 · Cited by 6
Zhai, Z., Liu, X., Zhang, Z., & Zhang, T.-J. (2013) · Research in Astronomy and Astrophysics · doi:10.1088/1674-4527/13/12/003 · Cited by 4
High-resolution saturation spectroscopy of singly-ionized iron with a pulsed UV laser
Ascoli, M., Eyler, E. E., Kawall, D., & DeMille, D. P. (2008) · Measurement Science and Technology · doi:10.1088/0957-0233/19/4/045602 · Cited by 4
Constraining spatial variations of the fine-structure constant in symmetron models
Pinho, A. M., Martinelli, M., & Martins, C. J. A. P. (2017) · Physics Letters B · doi:10.1016/j.physletb.2017.04.027 · Cited by 4
Magnetic contributions in Bekenstein type models
Kraiselburd, L., Castillo, F. L., MOSQUERA, M. E., & Vucetich, H. (2018) · Physical review. D/Physical review. D. · doi:10.1103/physrevd.97.043526 · Cited by 5
Mas-Ribas, L., Riemer–Sørensen, S., Hennawi, J. F., Miralda-Escudé, J., O’Meara, J. M., Pérez-Ràfols, I., Murphy, M. T., & Webb, J. K. (2018) · The Astrophysical Journal · doi:10.3847/1538-4357/aac81a · Cited by 4
Self-citation
Metadata
- Authors
- Murphy, M. T., Webb, J. K., & Flambaum, V. V.
- Affiliations
- University of Cambridge (GB)
- UNSW Sydney (AU)
- Corresponding author
- Murphy, M. T.
- Webb, J. K.
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2003-10
- Volume
- 345
- Issue
- 2
- Pages
- 609-638
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W2153130534
- Cited by
- 514
- References
- 115
- Citations by year
- 2026: 3 · 2025: 8 · 2024: 8 · 2023: 16 · 2022: 9 · 2021: 12 · 2020: 8 · 2019: 11 · 2018: 11 · 2017: 18 · 2016: 17 · 2015: 21 · 2014: 26 · 2013: 23 · 2012: 27
- FWCI
- 24.68
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Monthly Notices of the Royal Astronomical Society (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- Figshare (submittedVersion, cc-by)
- Swinburne figshare (Swinburne University of Technology) (submittedVersion)
- arXiv (Cornell University)
- Swinburne figshare (Swinburne University of Technology)
- Funders
- National Aeronautics and Space Administration
- W. M. Keck Foundation
- John Templeton Foundation
- California Institute of Technology
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
- Keywords
- fine-structure constant variation, alpha variation, quasar absorption lines, systematic errors, two-point correlation function
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
