Fulvio Melia

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Fulvio Melia
Melia Painted Desert.jpg
Born (1956-08-02) 2 August 1956 (age 60)
Gorizia, Italy
Residence United States


Fields Astrophysics, Cosmology
Institutions University of Arizona
Alma mater Melbourne University
Massachusetts Institute of Technology
Doctoral advisor Paul Joss and Saul Rappaport
Doctoral students Marco Fatuzzo
Ranjeev Misra
Peter Tamblyn
Marcus Boyd
Jack Hall
Sergei Nayakshin
Robert Coker
Sera Markoff
Michael Fromerth
Siming Liu
Gabriel Rockefeller
Brandon Wolfe
Jun-Jie Wei
Thomas McClintock
Known for High Energy Astronomy, supermassive black holes, cosmology
Notable awards Presidential Young Investigator Award (from President Ronald Reagan), Alfred P. Sloan Foundation Research Fellow, Sir Thomas Lyle Fellow, Miegunyah Fellow, Erskine Fellow, John Woodruff Simpson Chair

Fulvio Melia (born 2 August 1956) is an Italian-American astrophysicist, cosmologist and author. He is Professor of Physics, Astronomy and the Applied Math Program at the University of Arizona and was a Scientific Editor of The Astrophysical Journal and an Associate Editor of the The Astrophysical Journal Letters. A former Presidential Young Investigator and Sloan Research Fellow, he is the author of six English books (and various foreign translations) and 210 refereed articles on theoretical astrophysics and cosmology.


Melia was born in Gorizia, Italy. He was educated at Melbourne University and Massachusetts Institute of Technology, and held a post-doctoral research position at the University of Chicago, before taking an assistant professorship at Northwestern University in 1987. Moving to the University of Arizona as an associate professor in 1991, he became a full professor in 1993. From 1988 to 1995, he was a Presidential Young Investigator (under President Ronald Reagan), and then an Alfred P. Sloan Research Fellow from 1989 to 1992. He became a Fellow of the American Physical Society in 2002. He is also a Professorial Fellow in the School of Physics, Melbourne University, and a Distinguished Visiting Professor at Purple Mountain Observatory in Nanjing, China.

From 1996 to 2002, he was a Scientific Editor with the Astrophysical Journal, and has later been an Associate Editor with The Astrophysical Journal Letters. He is also the Chief Editor of the Theoretical Astrophysics series of books at the University of Chicago Press.

Polarimetric image of the supermassive black hole Sgr A* at the Galactic centre (Bromley, Melia & Liu 2001).

In a career that has seen him publish 210 refereed research papers and six books, Melia has made important contributions in High Energy Astronomy and the physics of supermassive black holes. He is especially known for his work on the galactic center, particularly developing a theoretical understanding of the central supermassive black hole, known as Sagittarius A*. With his students and collaborators, he was the first to propose that imaging this object with millimeter-interferometry[1][2] would reveal the shape and size of the shadow predicted by general relativity, thereby providing empirical evidence for the validity of the Kerr metric.

In recent years, he has plied his knowledge of general relativity and event horizons to cosmology, developing a foundation for the symmetries in the Friedmann-Robertson-Walker metric. In so doing, he and his students have developed the so-called R_h=ct Universe,[3][4][5][6] a cosmological theory that has accounted for the observational data better than all other models proposed thus far.[7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] In this cosmology, the Universe has no horizon problem, and therefore evolved without inflation.

He is a publicist of astronomy and science in general, delivering lectures at public venues, including museums and planetariums. His books have won several awards of distinction, including the designation of Outstanding Academic Books by the American Library Association, and selection as worldwide astronomy books of the year by Astronomy magazine.



  1. ^ Falcke H, Melia F, Agol E (2000). "Viewing the Shadow of the Black Hole at the Galactic Center". ApJ Letters. 528 (1): L13–L16. doi:10.1086/312423. 
  2. ^ Bromley B, Melia F, Liu S (2001). "Polarimetric Imaging of the Massive Black Hole at the Galactic Center". ApJ Letters. 555 (2): L83–L86. doi:10.1086/322862. 
  3. ^ Melia F (2007). "The Cosmic Horizon". MNRAS. 382 (4): 1917–1921. doi:10.1111/j.1365-2966.2007.12499.x. 
  4. ^ Melia F, Abdelqader M (2009). "The Cosmological Spacetime". IJMP-D. 18 (12): 1889–1901. doi:10.1142/S0218271809015746. 
  5. ^ Melia F, Shevchuk AS (2012). "The R_h=ct Universe". MNRAS. 419 (3): 2579–2586. doi:10.1111/j.1365-2966.2011.19906.x. 
  6. ^ Melia F (2015). "The Cosmic Equation of State". Astroph Sp Sc. 356 (2): 393–398. doi:10.1007/s10509-014-2211-5. 
  7. ^ Wei JJ, Wu XF, Melia F (2016). "The HII Hubble Diagram Strongly Favors the R_h=ct Universe over LCDM". MNRAS. doi:10.1093/mnras/stw2057. 
  8. ^ Zeng H, Melia F, Zhang L (2016). "Cosmological Tests with the FSRQ Gamma-ray Luminosity Function". MNRAS. doi:10.1093/mnras/stw1817. 
  9. ^ Lopez-Corredoira M, Melia F, Lusso E, Risaliti G (2016). "Cosmological test with the QSO Hubble diagram". IJMP-D. 25 (5): 1650060. doi:10.1142/S0218271816500607. 
  10. ^ Melia F, Fatuzzo M (2016). "The epoch of reionization in the R_h=ct Universe". MNRAS. 456 (4): 3422–3431. doi:10.1093/mnras/stv2902. 
  11. ^ Melia F (2016). "Constancy of the cluster gas mass fraction in the R_h=ct Universe". Proc R Soc A. 472 (2186): 20150765. doi:10.1098/rspa.2015.0765. 
  12. ^ Melia F, McClintock TM (2015). "Supermassive black holes in the early Universe". Proc R Soc A. 471 (2184): 20150449. doi:10.1098/rspa.2015.0449. 
  13. ^ Melia F, McClintock TM (2015). "A Test of Cosmological Models Using High-z Measurements of H(z)". AJ. 150 (4): 119. doi:10.1088/0004-6256/150/4/119. 
  14. ^ Melia F (2015). "The AGN Hubble Diagram and its implications for cosmology". Astroph Sp Science. 359: 34. doi:10.1007/s10509-015-2483-4. 
  15. ^ Wei JJ, Wu XF, Melia F, Wang FY, Yu H (2015). "The Age-Redshift Relationship of Old Passive Galaxies". AJ. 150 (1): 35. doi:10.1088/0004-6256/150/1/35. 
  16. ^ Wei JJ, Wu XF, Melia F (2015). "Testing Cosmological Models with Type Ic Super Luminous Supernovae". AJ. 149 (5): 165. doi:10.1088/0004-6256/149/5/165. 
  17. ^ Wei JJ, Wu XF, Melia F, Maier RS (2015). "A Comparative Analysis of the Supernova Legacy Survey Sample With ΛCDM and the R_h=ct Universe". AJ. 149 (3): 102. doi:10.1088/0004-6256/149/3/102. 
  18. ^ Wei JJ, Wu XF, Melia F (2015). "Cosmological tests using the angular size of galaxy clusters". MNRAS. 447 (1): 479–485. doi:10.1093/mnras/stu2470. 
  19. ^ Melia F (2015). "Cosmological Implications of the CMB Large-Scale Structure". AJ. 149 (1): 6. doi:10.1088/0004-6256/149/1/6. 
  20. ^ Melia F, Wei JJ, Wu XF (2015). "A Comparison of Cosmological Models Using Strong Gravitational Lensing Galaxies". AJ. 149 (1): 2. doi:10.1088/0004-6256/149/1/2. 
  21. ^ Wei JJ, Wu XF, Melia F (2014). "A Comparison of Cosmological Models Using Time Delay Lenses". ApJ. 788 (2): 190. doi:10.1088/0004-637X/788/2/190. 
  22. ^ Melia F (2014). "The Premature Formation of High-redshift Galaxies". AJ. 147 (5): 120. doi:10.1088/0004-6256/147/5/120. 
  23. ^ Wei JJ, Wu XF, Melia F, Wei DM, Feng LL (2014). "Cosmological tests using gamma-ray bursts, the star formation rate and possible abundance evolution". MNRAS. 439 (4): 3329–3341. doi:10.1093/mnras/stu166. 
  24. ^ Melia F (2014). "The high-z quasar Hubble Diagram". JCAP. 2104 (1): 027. doi:10.1088/1475-7516/2014/01/027. 
  25. ^ Melia F (2014). "Angular Correlation of the CMB in the R_h=ct Universe". A&A. 561: A80. doi:10.1051/0004-6361/201322285. 
  26. ^ Wei JJ, Wu XF, Melia F (2013). "The Gamma-Ray Burst Hubble Diagram and Its Implications for Cosmology". ApJ. 772 (1): 43. doi:10.1093/mnras/stu166. 
  27. ^ Melia F, Maier RS (2013). "Cosmic Chronometers in the R_h=ct Universe". MNRAS. 432 (4): 2669–2675. doi:10.1093/mnras/stt596. 
  28. ^ Melia F (2013). "The R_h=ct Universe without Inflation". A&A. 553: A76. doi:10.1051/0004-6361/201220447. 
  29. ^ Melia F (2013). "High-z Quasars in the R_h=ct Universe". ApJ. 764 (1): 72. doi:10.1088/0004-637X/764/1/72. 
  • Fulvio Melia, (2001). Electrodynamics (Chicago Lectures in Physics), University Of Chicago Press. ISBN 0-226-51958-9

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