Jean-Marc Bonnet-Bidaud (born 1950) is a

French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with Franc ...

astrophysicist at the Atomic Energy and Alternative Energies Commission (CEA). He is a specialist in high-energy astrophysics and in the study of highly condensed stars in the galaxy (

white dwarf A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter. A white dwarf is very dense: its mass is comparable to the Sun's, while its volume is comparable to the Earth's. A white dwarf's faint luminosity comes fro ...

neutron star A neutron star is the collapsed core of a massive supergiant star, which had a total mass of between 10 and 25 solar masses, possibly more if the star was especially metal-rich. Except for black holes and some hypothetical objects (e.g. white ...

s and

black hole A black hole is a region of spacetime where gravitation, gravity is so strong that nothing, including light or other Electromagnetic radiation, electromagnetic waves, has enough energy to escape it. The theory of general relativity predicts t ...

s). He is also active in the field of the

history of astronomy Astronomy is the oldest of the natural sciences, dating back to antiquity, with its origins in the religious, mythological, cosmological, calendrical, and astrological beliefs and practices of prehistory: vestiges of these are still found in ...

and in charge of the public outreach for astronomy at CEA.

Scientific work

Among his highest citation scientific papers are the discovery and collaborative study of an atypical

supernova A supernova is a powerful and luminous explosion of a star. It has the plural form supernovae or supernovas, and is abbreviated SN or SNe. This transient astronomical event occurs during the last evolutionary stages of a massive star or when ...

observed in 2006, a scientific review on the enigmatic X-ray source Cygnus X-3 and its reported very high energy emission and the discovery of abnormal CNO abundances among accreting magnetic white dwarfs.

History of science

Bonnet-Bidaud is the author of the first scientific study of the oldest known stellar map, the

Dunhuang Star Chart The Dunhuang map or Dunhuang Star map is one of the first known graphical representations of stars from ancient Chinese astronomy, dated to the Tang Dynasty (618–907). Before this map, much of the star information mentioned in historical ...

, also known as the S.3326 manuscript, a document found in China along the Silk road and now kept at the

British Library The British Library is the national library of the United Kingdom and is one of the largest libraries in the world. It is estimated to contain between 170 and 200 million items from many countries. As a legal deposit library, the British ...

London, England London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a major s ...

. The study concludes to a now revised datation at +650-685, making the chart contemporary of the early

Tang dynasty The Tang dynasty (, ; zh, t= ), or Tang Empire, was an Dynasties in Chinese history, imperial dynasty of China that ruled from 618 to 907 AD, with an Zhou dynasty (690–705), interregnum between 690 and 705. It was preceded by the Sui dyn ...

and most probably produced by the famous Chinese astronomer

Li Chunfeng Li Chunfeng (; 602–670) was a Chinese mathematician, astronomer, historian, and politician who was born in today's Baoji, Shaanxi, during the Sui and Tang dynasties. He was first appointed to the Imperial Astronomy Bureau to help institute a ca ...

. ''"Star maps and astronomy in ancient China"'' i
"The Silk Road: Trade, Travel, War and Faith"
The British Library, ed.

Susan Whitfield Susan Whitfield (born 1960) is a British scholar, currently Professor in Silk Road Studies at the Sainsbury Institute for the Study of Japanese Arts and Cultures (SISJAC), University of East Anglia. She previously worked at the British Library in L ...

, 2004.

Bibliography

Books

* ''4000 ans d'astronomie chinoise''(2017) () * ''Variations sur un même ciel'' (2012) with Aurélien Barrau and Michel Cassé * ''Le Soleil dans la peau'' (2012) with Alain Froment, Patrick Moureaux and Aymeric Petit * ''Un autre cosmos ?'' (2012) * ''Le big bang n'est pas une théorie comme les autres'' (2009) with François-Xavier Désert, Dominique Leglu and Gilbert Reinisch * ''Etoiles dans la nuit des temps'' (2009) * ''Daniel Pontoreau'' (2002) with Ann Hindry and Luc Lang * ''L'Etat des Sciences'' (1991)

Films

* ''The Dunhuang star chart'' (2009) with Jérôme Blumberg, CNRS Images * ''Enigmes de Sirius'' (2008) with Jérôme Blumberg, CNRS Images * ''Sirius, the Dogon star'' (1999) with Jérôme Blumberg, CNRS Images media-FEMIS-CICT

References

External links

Personal website of Jean-Marc Bonnet-Bidaud

Scientific publications
from the

NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding t ...

database

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Variations sur un même ciel

Le big bang n'est pas une théorie comme les autres

The Dunhuang star chart

Enigmes de Sirius

Sirius, the Dogon star
{{DEFAULTSORT:Bonnet-Bidaud, Jean-Marc 20th-century French astronomers 1950 births Living people French astrophysicists