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David Cosandey
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          About me:          

My interests, biography, how I look like.



          My research on the history of civilizations:          

My theory for the rises and falls of science in civilizations, explaining in particular the Western Miracle of the IIth millenium.
Books (Le Secret de l'Occident, 1997, 2007 – L'Europe et la Science, 1999). With several summaries and more than 160 summaries, quotes, review articles, interviews over 1997–2024.

My theory for the worldwide birthrate decline in the XXth-XXIth centuries.
Book (La Faillite coupable des retraites, 2004), summaries, quotes, review articles, interviews.



          My work in financial modelling:          

Oct 2001: “Adjusting Value-at-Risk for Market Liquidity”, Risk Magazine, Oct 2001, p.115-118.
Republished in the 25th anniversary issue of Risk Magazine in July 2012.

Dec 2002: “Swiss Corporate Bankruptcy Rates (1911–2000): Building A Time Series”, Financial Markets and Portfolio Management, Vol 16, 2002, Number 3, p.337–357.

Oct 2002: “Avoiding Procyclicality”, Risk Magazine, Oct 2002, p.62-63 (with U.Wolf).



          My biographies:          

The lives of historians Fernand Braudel, Joseph Needham, Max Weber, Karl Wittfogel, Eric Jones.

Jan 2014: 280 page-biography of Charles E. Maillefer (1921–2017), owner and director of Maillefer SA (1960-1987), Renens/Ecublens, Switzerland, 06 Jan 2014.
(Not yet published).

Mar 2023: My biography of Pierre Vittoz (1926-1978). Pierre Vittoz was my third cousin once removed.



          My review articles about other books:          

A review of Peter Gran's The Rise of the Rich (2008), published in American journal "International Sociology Reviews" in 2015.



          My results in pure mathematics:          

Research on prime numbers:
Apr 2017 (waiting for publication): "A Study of the Goldbach problem", completed 17 Jan 2017.



          My results in astrophysics:          

On my discovery of a supermassive black hole binary in the neighbouring galaxy Centaurus A at 12 million light-years from us – by re-reading the picture produced by the great EHT project. This supermassive black hole binary is a very tight one, the tightest known as well as the nearest to us: a dream come true for giant black hole astrophysicists!
"A close supermassive black hole binary in Centaurus A?", "Astrophysics and Space Science", 23 September 2022.
Reference: Astrophysics and Space Science (2022) 367:92      https://doi.org/10.1007/s10509-022-04128-4

Audio book on my discovery of the closest and tightest supermassive black hole binary by SciPod released in September 2024.

My paper was quoted by:

[Ruiz+2023]---"General relativistic magnetohydrodynamic simulations of accretion disks around tilted binary black holes of unequal mass", by Milton Ruiz, Antonios Tsokaros and Stuart L. Shapiro in Physical Review D, 2023, Volume 108, Number 12.      DOI: 10.1103/PhysRevD.108.124043

[Bogensberger+2024]---"Redshifted Iron Emission and Absorption Lines in the Chandra X-Ray Spectrum of Centaurus A", by David Bogensberger, Jon Miller, Elias Kammoun, Richard Mushotzky, Laura Brenneman, W. N. Brandt, Edward M. Cackett, Andrew Fabian, Jelle Kaastra, Shashank Dattathri, Ehud Behar and Abderahmen Zoghbi, in The Astrophysical Journal, 2024, Volume 961, Number 2, Page 150.      DOI: 10.3847/1538-4357/ad1107








Created: 31 Jan 2010 – Last modified: 17 Sep 2024