Publications of Marcelo Byrro Ribeiro

1. Fractal Dimension of the Cosmic Web with Different Galaxy Types
   Ana Elisa Lima, Julianne C. Soares, Ana Carolina S. Tavares, Mariana V. Taveira, Sharon Teles, Amanda R. Lopes & Marcelo B. Ribeiro
   Submitted for publication, (2025)
   download
   e-print (arXiv:2602.05309)
   

2. Shift Vector Symmetry in the Alcubierre Warp Drive Spacetime Geometry
   Osvaldo L. Santos-Pereira, Everton M. C. Abreu & Marcelo B. Ribeiro
   Submitted for publication, (2025)
   download
   e-print (arXiv:2510.11836)
   

3. Modeling Income Distribution with the Gause-Witt Population Ecology System
   Marcelo B. Ribeiro
   Submitted for publication, (2025)
   download
   e-print (arXiv:2506.20881)
   

4. Matching the Alcubierre and Minkowski Spacetimes
   Osvaldo L. Santos-Pereira, Everton M. C. Abreu & Marcelo B. Ribeiro
   European Physical Journal C, vol 86, 46, (2026)
   Highlights: The Darmois junction conditions matching an interior Alcubierre warp drive geometry to an exterior Minkowski are studied. The match imposes
   that the warp drive shift vector satisfies a particular inviscid Burgers equation. The results show that the warp drive geometry is not globally flat.
   download (reprint in pdf)
   e-print (arXiv:2512.12541)
   doi (10.1140/epjc/s10052-025-15215-5)
   outreach: Science Magazine (Alcubierre Drive Meets Flat Space: Warp Drive Insight)

5. World Personal Income Distribution Evolution Measured by Purchasing Power Parity Exchange Rates
   J. D. A. Islas-García, M. del Castillo-Mussot & Marcelo B. Ribeiro
   Revista Mexicana de Física, vol 71, 061701, (2025)
   Highlights: Global income distribution for 1988-2018 is studied using PPP exchange rates. CCDF curves showed trends in inequality. Late middle classes growth
   in China and India changed the distributions from bimodal to unimodal. Single-functions are good fits, but the sum of two log-normals led to near-perfect fits.
   download (reprint in pdf)
   e-print (arXiv:2510.26030)
   doi (10.31349/RevMexFis.71.061701)
   

6. Galaxy Mergers in a Fractal Cosmology
   Bruno J. Souza, Osvaldo L. Santos-Pereira & Marcelo B. Ribeiro
   European Physical Journal C, vol 85, 455, (2025)
   Highlights: Galaxy mergers are modeled in a parabolic Lemaître-Tolman-Bondi cosmology with two consecutive fractal galaxy systems with dimension D starting at the
   Local Group or Local Supercluster. Mergers are represented by a redshift dependent power law. Numerical solutions show: D=1.5 for 0.1≤z<1.0; D=0.5 for 1≤z≤7.
   download (reprint in pdf)
   e-print (arXiv:2504.09649)
   doi (10.1140/epjc/s10052-025-14191-0)
   

7. Theory Assessment and Reality in Boltzmann's Epistemological Thinking
   Marcelo B. Ribeiro & Antonio A. P. Videira
   Interdisciplinary Science Reviews, vol 48, Nr. 1, 62-76, (2023)
   Highlights: Boltzmann's epistemology states that scientific theories are images of Nature. So, theories can be described by different viewpoints. Realizing later that
   theoretical pluralism is not enough to avoid dogmatism, Boltzmann went beyond the nature of scientific knowledge to include realism, the nature of the represented objects.
   download (reprint in pdf, epub)
   e-print (arXiv:physics/0701308)
   doi (10.1080/03080188.2022.2146272)
   online (view)

8. Warp Drive Dynamic Solutions Considering Different Fluid Sources
   Osvaldo L. Santos-Pereira, Everton M. C. Abreu & Marcelo B. Ribeiro
   In: Proceedings of the 16th Marcel Grossmann Meeting on General Relativity (5-10 July 2021),
   R. Ruffini & G. Vereshchagin (eds): Singapore: World Scientific, 840-855, (2023)
   Highlights: Einstein equations solutions using the original Alcubierre warp drive metric endowed with dust, perfect fluid, anisotropic fluid, and perfect fluid
   within a cosmological constant are reviewed. A connection of some of these solutions featuring shock waves described by the Burgers equation is also shown.
   download (reprint in pdf)
   e-print (arXiv:2111.01298)
   doi (10.1142/9789811269776_0066)
   eISBN (978-981-12-6977-6)
   

9. Galaxy Distributions as Fractal Systems
   Sharon Teles, Amanda R. Lopes & Marcelo B. Ribeiro
   European Physical Journal C, vol 82, 896, (2022)
   Highlights: Galaxy distribution samples containing ~ 1 million objects show 2 consecutive redshift scales where galaxy distribution data behave as single fractal
   structures: z<1 (D=0.88-1.58) and 1≤z≤4 (D=0.28-1.19). A decades old theoretical prediction of a decrease in the fractal dimension for z>1 is then confirmed.
   download (reprint in pdf)
   e-print (arXiv:2209.15044)
   doi (10.1140/epjc/s10052-022-10866-0)

10. The Power Spectrum of Cosmological Number Densities
    Amanda R. Lopes, Marcelo B. Ribeiro & William R. Stoeger
    European Physical Journal Plus, vol 137, 942, (2022)
    Highlights: The power spectra (PS) of galaxy volume number densities are constructed with four different cosmological distance definitions in the FLRW cosmology.
    The radial correlation is presented in the wave number domain. Some distances have PS similar to those obtained with the galaxy 2-point correlation function.
    download (reprint in pdf)
    e-print (arXiv:2106.02121)
    doi (10.1140/epjp/s13360-022-03168-7)
    online (view)

11. Testing Cosmological Models with the Brightness Profile of Distant Galaxies
    Iker Olivares-Salaverri & Marcelo B. Ribeiro
    Astrophysics and Space Science, vol 366, Nr. 11, 109, (2021)
    Highlights: Galaxy surface brightness profiles are compared to observations in two cosmological models: ΛCDM and EdS. A galaxy sample at 1.5≲z≲2.3 is used
    to test which cosmology is represented by brightness profile observations. Results show high uncertainties and negligible evolution of the Sersic index.
    download (reprint in pdf)
    e-print (arXiv:1311.7036)
    doi (10.1007/s10509-021-04016-3)
    online (view)

12. Perfect Fluid Warp Drive Solutions with the Cosmological Constant
    Osvaldo L. Santos-Pereira, Everton M. C. Abreu & Marcelo B. Ribeiro
    European Physical Journal Plus, vol 136, 902, (2021)
    Highlights: Solutions are found for the Einstein equations with the cosmological constant Λ for the Alcubierre metric with perfect fluid. Energy conditions are also
    analyzed. Depending of the sign and value of Λ the shift vector can be a real function, so negative matter might not be a requirement to achieve superluminal speeds.
    download (reprint in pdf)
    e-print (arXiv:2108.10960)
    doi (10.1140/epjp/s13360-021-01899-7)
    online (view)
    

13. Charged Dust Solutions for the Warp Drive Spacetime
    Osvaldo L. Santos-Pereira, Everton M. C. Abreu & Marcelo B. Ribeiro
    General Relativity and Gravitation, vol 53, 23, (2021)
    Highlights: Einstein equations with the cosmological constant are solved for the Alcubierre warp drive metric with charged dust as source. Energy conditions
    are partially satisfied by both positive and negative matter density. Effects of the electromagnetic field on the warp bubble dynamics is also presented.
    download (reprint in pdf)
    e-print (arXiv:2102.05119)
    doi (10.1007/s10714-021-02799-y)
    online (view)
    

14. Fluid Dynamics in the Warp Drive Spacetime Geometry
    Osvaldo L. Santos-Pereira, Everton M. C. Abreu & Marcelo B. Ribeiro
    European Physical Journal C, vol 81, 133, (2021)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:2101.11467)
    doi (10.1140/epjc/s10052-021-08921-3)

15. Fractal Analysis of the UltraVISTA Galaxy Survey
    Sharon Teles, Amanda R. Lopes & Marcelo B. Ribeiro
    Physics Letters B, vol 813, 136034, (2021)
    Highlights: The UltraVISTA galaxy survey is tested for fractal structures. Two consecutive single fractal dimensions were found: D=(1.58 ± 0.20) for z < 1;
    D=(0.59 ± 0.28) for 1 ≤ z ≤ 4. This suggests either unclear observational biases causing D to decrease or that galaxy clustering was void dominated in the past.
    download (reprint in pdf)
    e-print (arXiv:2012.07164)
    doi (10.1016/j.physletb.2020.136034)

16. Income Distribution Dynamics of Economic Systems: An Econophysical Approach
    Marcelo Byrro Ribeiro
    Cambridge University Press (2020)
    Highlights: This book uses the econophysics perspective to study the income distribution. Several functions that fit income data are presented. Two separate
    research traditions are discussed: the statistical physics approach, and the one based on non-linear trade cycle models of macroeconomic dynamics.
    Look Inside: Copyright Information, Excerpt, Table of Contents, Front Matter, Index
    hardback ISBN: 9781107092532
    online ISBN: 9781316136119 ➔ doi: 10.1017/9781316136119
    Order: Amazon.com

17. Dust Content Solutions for the Alcubierre Warp Drive Spacetime
    Osvaldo L. Santos-Pereira, Everton M. C. Abreu & Marcelo B. Ribeiro
    European Physical Journal C, vol. 80, 786, (2020)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:2008.06560)
    doi (10.1140/epjc/s10052-020-8355-2)

18. High-Derivatives and Massive Electromagnetic Models in the Lemaître-Tolman-Bondi spacetime
    Rafael L. Fernades, Everton M. C. Abreu & Marcelo B. Ribeiro
    European Physical Journal C, vol. 80, 240, (2020)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:2002.11801)
    doi (10.1140/epjc/s10052-020-7787-z)

19. Oscillations in the Tsallis Income Distribution
    Everton M. C. Abreu, Newton J. Moura Jr, Abner D. Soares & Marcelo B. Ribeiro
    Physica A, vol. 533, 121967, (2019)
    Highlights: Oscillations in the complementary cumulative distribution function of individual income were found in the data of various countries. This
    behavior can be described if the q-parameter of the Tsallis distribution becomes complex. An example is shown by numerically fitting Brazilian income data.
    download (reprint in pdf)
    e-print (arXiv:1706.10141)
    doi (10.1016/j.physa.2019.121967)

20. Effect of Different Cosmologies on the Galaxy Stellar Mass Function
    Amanda R. Lopes, C. Gruppioni, Marcelo B. Ribeiro, L. Pozzetti, S. February, O. Ilbert & F. Pozzi
    Monthly Notices of the Royal Astronomical Society, vol. 471, 3098-3111, (2017)
    Highlights: work in progress
    download (reprint in pdf),
    doi (10.1093/mnras/stx1799)

21. Tsallis Statistics in the Income Distribution of Brazil
    A. D. Soares, N. J. Moura Jr & Marcelo B. Ribeiro
    Chaos, Solitons & Fractals, vol. 88, 158-171, (2016)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:1602.06855)
    doi (10.1016/j.chaos.2016.02.026)
    short talk (slides in pdf)

22. Fractal Analysis of the Galaxy Distribution in the Redshift Range 0.45 < z < 5.0
    G. Conde-Saavedra, A. Iribarrem & Marcelo B. Ribeiro
    Physica A, vol. 417, 332-344, (2015)
    Highlights: work in progress
    download (reprint in pdf, epub, mobi)
    e-print (arXiv:1409.5409)
    doi (10.1016/j.physa.2014.09.044)

23. Galaxy Cosmological Mass Function
    Amanda R. Lopes, A. Iribarrem, Marcelo B. Ribeiro & William R. Stoeger
    Astronomy and Astrophysics, vol. 572, A27, (2014)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:1409.5183)
    doi (10.1051/0004-6361/201423445)

24. Relativistic Cosmology Number Densities in Void-Lemaître-Tolman-Bondi Models
    A. Iribarrem, P. Andreani, S. February, C. Gruppioni, A. R. Lopes, M. B. Ribeiro & W. R. Stoeger
    Astronomy and Astrophysics, vol. 563, A20, (2014)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:1401.6572)
    doi (10.1051/0004-6361/201322507)

25. Testing the Goodwin Growth-Cycle Macroeconomic Dynamics in Brazil
    Newton J. Moura Jr. & Marcelo B. Ribeiro
    Physica A, vol. 392, 2088-2103, (2013)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:1301.1090)
    doi (10.1016/j.physa.2013.01.024)
    short talk (slides in pdf)

26. Cosmological Model Dependence of the Galaxy Luminosity Function: Far-infrared Results in the Lemaître-Tolman-Bondi Model
    A. Iribarrem, P. Andreani, C. Gruppioni, S. February, M. B. Ribeiro, S. Berta, E. Le Floc'h, B. Magnelli, R. Nordon, P. Popesso, F. Possi & L. Riguccini
    Astronomy and Astrophysics, vol. 558, A15, (2013)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:1308.2199)
    doi (10.1051/0004-6361/201321396)

27. Relativistic Cosmology Number Densities and the Luminosity Function
    Alvaro S. Iribarrem, Amanda R. Lopes, Marcelo B. Ribeiro & William R. Stoeger
    Astronomy and Astrophysics, vol. 539, A112, (2012)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:1201.5571)
    doi (10.1051/0004-6361/201117535)

28. Probing the Cosmic Distance Duality Relation with the Sunyaev-Zeldovich Effect, X-rays Observations and Supernovae Ia
    R. F. L. Holanda, J. A. S. Lima & M. B. Ribeiro
    Astronomy and Astrophysics, vol. 538, A131, (2012)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:1104.3753)
    doi (10.1051/0004-6361/201118343)

29. Radial Density Statistics of the Galaxy Distribution and the Luminosity Function
    A. S. Iribarrem, M. B. Ribeiro & W. R. Stoeger
    In: Proceedings of the 12th Marcel Grossmann Meeting on General Relativity (12-18 July 2009, Paris, France);
    T. Damour, R. T. Jantzen & R. Ruffini (eds): Singapore: World Scientific, 2216-2219, (2012)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:1207.2542)
    doi (10.13140/RG.2.1.2413.2564)
    ISBN (13 978-981-4374-54-5)
    

30. Cosmologia e Representação (Cosmology and Representation)
    Marcelo Byrro Ribeiro
    In: "Experiências e interpretações do sagrado: interfaces entre saberes acadêmicos e religiosos
    (Experiences and interpretations of the sacred: interfaces between academic and religious knowledges)";
    Proceedings of the XII Symposium of the Brazilian Association for the History of Religions-ABHR;
    A. E. Huff Jr. & E. Rodrigues (eds): São Paulo: Paulinas, 63-85, (2012)
    Highlights: work in progress
    e-print (arXiv:1308.2929)
    doi (10.13140/RG.2.1.3232.4562)
    ISBN (978-85-356-3187-6)
    

31. Cosmic Distance Duality Relation and the Shape of Galaxy Clusters
    R. F. L. Holanda, J. A. S. Lima & M. B. Ribeiro
    Astronomy and Astrophysics, vol. 528, L14, (2011)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:1003.5906)
    doi (10.1051/0004-6361/201015547)

32. The Gompertz-Pareto Income Distribution
    F. Chami Figueira, Newton J. Moura Jr & Marcelo B. Ribeiro
    Physica A, vol. 390, 689-698, (2011)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:1010.1994)
    doi (10.1016/j.physa.2010.10.014)

33. Cosmologia, uma Ciência Especial? Algumas Considerações sobre as Relações entre a Cosmologia Moderna, Filosofia e Teologia
    (Cosmology, a Special Science? Some Thoughts about the Relationship of Modern Cosmology, Philosophy and Theology)
    Marcelo Byrro Ribeiro & Antonio Augusto Passos Videira
    In: "Teologia e Ciências Naturais (Theology and Natural Sciences)": E. R. Cruz (ed): São Paulo: Paulinas, 162-197, (2011)
    Highlights: work in progress
    download (preprint in pdf)
    doi (10.13140/RG.2.1.4641.4800)
    ISBN (978-85-356-2768-8)
    

34. Testing the Distance-Duality Relation with Galaxy Clusters and Supernovae Ia
    R. F. L. Holanda, J. A. S. Lima & M. B. Ribeiro
    The Astrophysical Journal Letters, vol. 722, L233-L237, (2010)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:1005.4458)
    doi (10.1088/2041-8205/722/2/L233)
    short talk (slides in pdf)

35. Cosmological Models and the Brightness Profile of Distant Galaxies
    Iker Olivares-Salaverri & Marcelo B. Ribeiro
    Memorie della Società Astronomica Italiana, vol. 80, 925-928, (2009)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:0911.3035)
    doi (10.1017/S174392131000966X)

36. Evidence for the Gompertz Curve in the Income Distribution of Brazil 1978-2005
    Newton J. Moura Jr. & Marcelo B. Ribeiro
    The European Physical Journal B, vol. 67, 101-120, (2009)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:0812.2664)
    doi (10.1140/epjb/e2008-00469-1)

37. Spatial and Observational Homogeneities of the Galaxy Distribution in Standard Cosmologies
    Luis Juracy Rangel Lemos & Marcelo B. Ribeiro
    Astronomy and Astrophysics, vol. 488, 55-66, (2008)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:0805.3336)
    doi (10.1051/0004-6361:20077978)

38. Differential Density Statistics of the Galaxy Distribution and the Luminosity Function
    Vinicius V. L. Albani, Alvaro S. Iribarrem, Marcelo B. Ribeiro & William R. Stoeger
    The Astrophysical Journal, vol. 657, 760-772, (2007)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (astro-ph/0611032)
    doi (10.1086/510520)

39. Star Formation in Satellite Galaxies
    C. M. Gutierrez, M. S. Alonso, J. G. Funes, SJ & M. B. Ribeiro
    The Astronomical Journal, vol. 132, 596-607, (2006)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (astro-ph/0604321)
    doi (10.1086/504591)

40. Zipf Law for Brazilian Cities
    Newton J. Moura Jr. & Marcelo B. Ribeiro
    Physica A, vol. 367, 441-448, (2006)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (physics/0511216)
    doi (10.1016/j.physa.2005.11.038)

41. Cosmological Distances and Fractal Statistics of Galaxy Distribution
    Marcelo B. Ribeiro
    Astronomy and Astrophysics, vol. 429, Nr. 1, 65-74, (2005)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (astro-ph/0408316)
    doi (10.1051/0004-6361:20041469)

42. Uma História do Universo (A History of the Universe)
    Marcelo Byrro Ribeiro
    In: "Observatórios Virtuais": Laerte Sodré Jr. (organizer), Jane Gregorio-Hetem and Raquel Yumi Shida (eds.);
    Virtual Observatories Project CD-ROM produced by IAG/USP team, (2005)
    Highlights: work in progress
    download (zip file)
    browse (pps file)

43. Star Formation in Satellite Galaxies
    José G. Funes, Carlos M. Gutiérrez, Francisco Prada, Marco Azzaro & Marcelo B. Ribeiro
    In: "Satellites and Tidal Streams": F. Prada, D. M. Delgado & T. J. Mahoney (eds.),
    Astronomical Society of the Pacific Conference Series, vol. 327, (San Francisco: ASP), 272-275, (2004)
    Highlights: work in progress
    download reprint in pdf)
    e-print (astro-ph/0309601)
    link (abstract)
    ISBN (1-58381-190-7)
    

44. Cosmologia e Pluralismo Teórico (Cosmology and Theoretical Pluralism)
    Marcelo Byrro Ribeiro & Antonio Augusto Passos Videira
    Scientiæ Studia, vol. 2, Nr. 4, 519-535, (2004)
    Highlights: work in progress
    download (reprint in pdf)
    doi (10.1590/S1678-31662004000400004)

45. Relativistic Cosmology Number Counts and the Luminosity Function
    Marcelo B. Ribeiro & William R. Stoeger
    The Astrophysical Journal, vol. 592, Nr. 1, 1-16, (2003)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (astro-ph/0304094)
    doi (10.1086/375717)

46. A Fortran Code for Null Geodesic Solutions in the Lemaître-Tolman-Bondi Spacetime
    Marcelo B. Ribeiro
    Computer Physics Communications, vol. 148, Nr. 2, 236-241, (2002)
    Highlights: work in progress
    download (fortran code; reprint in pdf)
    e-print (gr-qc/0205095)
    doi (10.1016/S0010-4655(02)00561-1)

47. Limited-Frequency-Range Observations of Cosmological Point Sources
    Marcelo B. Ribeiro
    The Observatory, vol. 122, Nr. 1169, 201-210, (2002)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (gr-qc/9910014)
    link (abstract)
    

48. As Relações entre Ciência e Religião (The Relationship between Science and Religion)
    Marcelo Byrro Ribeiro & Antonio Augusto Passos Videira
    Introduction to the Brazilian edition of the book "As Leis da Natureza: Conhecimento Humano e Ação Divina," by William R. Stoeger;
    translation of the original "The Laws of Nature, the Range of Human Knowledge and Divine Action" to Brazilian Portuguese;
    São Paulo: Paulinas, 9-19, (2002)
    Highlights: work in progress
    download (reprint in pdf)
    doi (10.13140/RG.2.1.4723.4007)
    ISBN (85-356-0821-4)
    

49. Scale Invariance in a Perturbed Einstein-de Sitter Cosmology
    Elcio Abdalla, Roya Mohayaee & Marcelo B. Ribeiro
    Fractals, vol. 9, Nr. 4, 451-462, (2001)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (astro-ph/9910003)
    doi (10.1142/S0218348X0100083X)

50. The Apparent Fractal Conjecture: Scaling Features in Standard Cosmologies
    Marcelo B. Ribeiro
    General Relativity and Gravitation, vol. 33, Nr. 10, 1699-1730, (2001)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (astro-ph/0104181)
    doi (10.1023/A:1013095316494)

51. The Apparent Fractal Conjecture
    Marcelo B. Ribeiro
    Fractals, vol. 9, Nr. 3, 237-240, (2001)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (gr-qc/9909093)
    doi (10.1142/S0218348X01000646)

52. O Problema da Criação na Cosmologia Moderna (The Problem of Creation in Modern Cosmology)
    Marcelo Byrro Ribeiro & Antonio Augusto Passos Videira
    In: "Mysterium Creationis - Um Olhar Interdisciplinar sobre o Universo (Mysterium Creationis - An Interdisciplinary Look at the Universe)", (*)
    Proceedings of the "Sociedade de Teologia e Ciências da Religião (Society for Theology and Religious Sciences)", Cachoeira do Campo, Brazil, 5-9 July 1999,
    L. C. Susin (ed.); São Paulo: Paulinas, 45-83, (1999)
    Highlights: work in progress
    download (preprint in pdf)
    browse (browse)
    doi (10.13140/RG.2.1.1649.0962)
    ISBN (85-356-0575-4)
    

    (*) This book received the prize JABUTI 2000, awarded by the "Brazilian Book Chamber" in April 2000

53. Fractals and the Distribution of Galaxies
    Marcelo B. Ribeiro & Alexandre Y. Miguelote
    Brazilian Journal of Physics, vol. 28, 132-160, (1998)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (astro-ph/9803218)
    doi (10.1590/S0103-97331998000200007)

54. Dogmatism and Theoretical Pluralism in Modern Cosmology
    Marcelo B. Ribeiro & Antonio A. P. Videira
    Apeiron-Studies in Infinite Nature, vol. 5, 227-234, (1998)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (physics/9806011)
    browse (Spanish translation and Czech translation)

55. Observations in the Einstein-de Sitter Cosmology: Dust Statistics and Limits of Apparent Homogeneity
    Marcelo B. Ribeiro
    The Astrophysical Journal, vol. 441, 477-487, (1995)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (astro-ph/9910145)
    doi (10.1086/175374)

56. Relativistic Fractal Cosmologies
    Marcelo B. Ribeiro
    In: "Deterministic Chaos in General Relativity", Proceedings of the NATO Advanced Research Workshop: Kananaskis Park, Alberta, CANADA, 25-30 July 1993,
    D. W. Hobill, A. Burd & A. Coley (eds): NATO ANSI Series B: Physics Vol. 332, (New York: Plenum Press), 269-296, (1994)
    Highlights: work in progress
    e-print (arXiv:0910.4877)
    doi (10.1007/978-1-4757-9993-4_15)
    ISBN (0-306-44811-4)
    

57. Cosmologia Newtoniana (Newtonian Cosmology)
    Marcelo B. Ribeiro
    Boletim da Sociedade Astronômica Brasileira (Bulletin of the Brazilian Astronomical Society), vol. 14, Nr. 2, 34-63, (1994)
    Highlights: work in progress
    download (reprint in pdf)

58. On Modeling a Relativistic Hierarchical (Fractal) Cosmology by Tolman's Spacetime. III. Numerical Results
    Marcelo B. Ribeiro
    The Astrophysical Journal, vol. 415, 469-485, (1993)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:0807.1021)
    doi (10.1086/173179)

59. On Modeling a Relativistic Hierarchical (Fractal) Cosmology by Tolman's Spacetime. II. Analysis of the Einstein-de Sitter Model
    Marcelo B. Ribeiro
    The Astrophysical Journal, vol. 395, 29-33, (1992)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:0807.0869)
    doi (10.1086/171628)

60. On Modeling a Relativistic Hierarchical (Fractal) Cosmology by Tolman's Spacetime. I. Theory
    Marcelo B. Ribeiro
    The Astrophysical Journal, vol. 388, 1-8, (1992)
    Highlights: work in progress
    download (reprint in pdf)
    e-print (arXiv:0807.0866)
    doi (10.1086/171123)

61. On Modelling a Relativistic Hierarchical (Fractal) Cosmology by Tolman's Spacetime
    Marcelo Byrro Ribeiro
    PhD thesis (192 pages), Queen Mary & Westfield College, University of London, (1992)
    Highlights: work in progress
    download program (fortran 77 source code simu5d)

62. Anisotropic Viscous Fluid Cosmological Model
    M. B. Ribeiro, A. Banerjee & N. O. Santos
    Astrophysics & Space Science, vol. 136, 331-336, (1987)
    Highlights: work in progress
    download (reprint in pdf)
    doi (10.1007/BF00642124)

63. Bianchi VI₀ Viscous Fluid Cosmology with Magnetic Field
    Marcelo Byrro Ribeiro & Abhik Kumar Sanyal
    Journal of Mathematical Physics, vol. 28, 657-660, (1987)
    Highlights: A Bianchi VI₀ model with viscous fluid and axial magnetic field is studied with a barotropic state equation, and shear and expansion
    scalars. Solutions were obtained with and without magnetic field, whose presence does not change the initial singularity of the expanding model.
    download (reprint in pdf)
    e-print (arXiv:2105.07728)
    doi (10.1063/1.527599)

64. Modelos Cosmológicos com Fluido Dissipativo (Cosmological Models with Dissipative Fluid)
    Marcelo Byrro Ribeiro
    MSc dissertation (91 pages), Observatório Nacional, Rio de Janeiro, (1987)
    Highlights: Isotropic and anisotropic Bianchi VI₀ type cosmologies with dissipative fluids are studied. Two new exact solutions are found.
    The importance of volume and shear viscosity coeficients in these cosmological models is also analized (in Brazilian Portuguese).
    download (dissertation in pdf)
    doi (10.13140/RG.2.1.1184.0724)