2023-11-18 21:00:00
conference. On Friday, around forty people attended the conference, “Radio astronomy, the Universe from another angle”, proposed by the Haute-Marne Astronomical Society and given by Philippe Simonnet, at the Valcourt Observatory. Philippe Simonnet spoke regarding radio astronomy, this science born in the 1930s but which only took off in the 50s and 60s with the creation of large instruments. The former director of the Reims planetarium demonstrated the interest in observing stars in the field of radio waves and then discussed the different types and characteristics of radio telescopes. “These are gigantic but much easier to build and install than optical telescopes. There are fewer technical constraints,” underlined Philippe Simonnet. The latter then became interested in instrument technology and then in the contribution of radio astronomy to several important discoveries such as that of the structure of the Milky Way, quasars, that is to say stars with a stellar appearance and of very high luminosity, pulsars in 1967 or even the residual light from the birth of the Big Bang. The Event Horizon telescope, which is an international network of radio observatories, notably made it possible to obtain the first image of a black hole. Currently, large radio telescopes are being built to be linked together in all four corners of the world.
Philippe Simonnet fascinated his audience.
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