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Fulvio Melia

Fulvio Melia is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Fulvio Melia rather than just read about it. In short: Fulvio Melia (born 2 August 1956) is an Italian-American astrophysicist, cosmologist and author. He is a 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 Astrophysical Journal Letters.

Fulvio Melia — main illustration
Fulvio Melia — illustration

Key takeaways

  • Fulvio Melia belongs to physics; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Fulvio Melia to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Fulvio Melia from memory before moving on to harder problems.

Reference excerpt

Fulvio Melia (born 2 August 1956) is an Italian-American astrophysicist, cosmologist and author. He is a 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 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 230 refereed articles on theoretical astrophysics and cosmology.

Career Melia was born in Gorizia, Friuli-Venezia Giulia, 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.

In a career that has seen him publish 260 refereed research papers and seven 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 would reveal the shape and size of the shadow predicted by general relativity, thereby providing empirical evidence for the validity of the Kerr metric. Fulvio Melia's foundational work on this concept, and associated outreach through several books he has written on this topic, have led to the development of the Event Horizon Telescope, which has made a mm-wavelength image of this object as predicted almost two decades ago. Alongside his students Melia has also developed the so-called Rh=ct universe or Melia cosmology, a cosmological theory that, they argue, has accounted for the observational data better than all other models proposed thus far. In this cosmology, the Universe has no horizon problem, and might therefore evolved without inflation. Melia's cosmology is notable for its simplicity and its adherence to the symmetries implied by the Friedmann-Robertson-Walker metric, which require the comoving frame to be inertial. The Rh=ct universe however cannot account for observed primordial nucleosynthesis abundances as it predicts helium abundances several orders of magnitude lower than observed and virtually no primordial deuterium. In addition the expansion of the universe measured by the Supernova Cosmology Project strongly disfavors a non-accelerating expansion history which is a central aspect of the Melia cosmology, and the theory's predictions of the scale of baryon acoustic oscillations are not consistent with observations of the cosmic microwave background. Melia 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. In 2014, he presented the Walter Stibbs Lecture at the University of Sydney, the title being "Cracking the Einstein Code".

Books Electrodynamics (2001), University of Chicago Press, ISBN 978-0-226-51957-9 (Cloth), ISBN 978-0-226-51958-6 (Paper) The Black Hole at the Center of Our Galaxy (2003), Princeton University Press, ISBN 978-0-691-09505-9 (Cloth) Il Buco Nero al Centro della Nostra Galassia (2005), Bollati Boringhieri, ISBN 978-88-339-1608-8 The Edge of Infinity. Supermassive Black Holes in the Universe (2003), Cambridge University Press, ISBN 978-0-521-81405-8 (Cloth) Na Skraju Nieskonczonosci] (2005), Wydawnictwo Amber, ISBN 83-241-2296-6 (Cloth) The Galactic Supermassive Black Hole (2007), Princeton University Press, ISBN 978-0-691-13129-0 High-Energy Astrophysics] (2009), Princeton University Press, ISBN 0-691-14029-4 (Paper), ISBN 978-0-691-14029-2 (Cloth) Cracking the Einstein Code] (2009), University of Chicago Press, ISBN 0-226-51951-1, ISBN 978-0-226-51951-7 The Cosmic Spacetime] (2020), Taylor & Francis, ISBN 0367532190, ISBN 978-0367532192

References

Fulvio Melia, (2001). Electrodynamics (Chicago Lectures in Physics), University Of Chicago Press. ISBN 0-226-51958-9

External links Official website

Illustrations

Fulvio Melia illustration
Fulvio Melia: Polarimetric image of the supermassive black hole Sgr A* at the Galactic Center (Bromley, Melia & Liu 2001)
Polarimetric image of the supermassive black hole Sgr A* at the Galactic Center (Bromley, Melia & Liu 2001)

Worked examples

Example 1 — a first encounter with Fulvio Melia

Start with the simplest possible case. Write down what Fulvio Melia claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Fulvio Melia before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Fulvio Melia ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Fulvio Melia

In research
Fulvio Melia appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Fulvio Melia in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Fulvio Melia is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1956 births, American astrophysicists, Fellows of the American Physical Society, so understanding it makes those chapters shorter.
In everyday life
Look for Fulvio Melia outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Fulvio Melia in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Fulvio Melia means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Fulvio Melia out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Fulvio Melia in simple terms?

Fulvio Melia (born 2 August 1956) is an Italian-American astrophysicist, cosmologist and author. He is a 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 Astrophysical Jo…

Why does Fulvio Melia matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Fulvio Melia?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Fulvio Melia.

Tags

  • 1956 births
  • American astrophysicists
  • Fellows of the American Physical Society
  • Italian astrophysicists
  • Italian emigrants to the United States
  • Italian expatriates in Australia
  • Living people
  • Massachusetts Institute of Technology alumni
  • Northwestern University faculty
  • People from Gorizia
  • University of Arizona faculty
  • University of Chicago faculty

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