http://popups.lib.uliege.be/1373-5411/index.php?id=1273 Publications of Auteurs Jacques J. Steyaert fr 0 http://popups.lib.uliege.be/1373-5411/index.php?id=1771 Faster than light tachyons are generaly considered as hypothethical particles. Bradyons, subluminal particles, are part of our common world. We are interested in the interaction between bradyons and tachyons, assuming they exist. The collision between them is well described by the conservation of energy and momentum. Bradyons are caracterized by rest mass m or fundamental energy (c = 1) ; tachyons by pseudo-mass M or fundamental momentum. A bradyon initially at rest is supposed to absorb a tachyon. The bradyon then recoils with a kinetic energy T given by T = M2/2m depending only of two fundamental constants m and M. This would be the base of the tachyo-electric effect. We consider in this paper the possible symetry between bradyons and tachyons. Tue, 16 Jul 2024 15:34:08 +0200 Mon, 07 Oct 2024 15:17:43 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=1771 http://popups.lib.uliege.be/1373-5411/index.php?id=1267 In paper 1 (Steyaert 1999) we showed that the tachyon (v>c) concept was a valid one with numerous applications in astrophysics. If every star is emitting a copious amount of tachyons. one for each central photon, then it could well be that the dark matter problem is sol\ ed by energetic tachyons surrounding the Galaxy and the cluster of galaxies. At the beginning of the years 1980, nuclear physicists have obtained a value of the compressibility parameter K of nuclear matter. They found a value of 300 ± 25 MeV at variance with the commonly accepted value of 210 ± 30 MeV. In this short note we want to show that it is possible by combining the observation of the jet at 0.2601 c ejected by SS433 with parameters of the neutron stars to determine K by an other way and to find again a value around 300 MeV. Moreover the radius and mass of the neutron star imbedded in SS433 are found to be 11.4 Rsun and 2.288 Msun respectively. Wed, 10 Jul 2024 09:54:22 +0200 Wed, 10 Jul 2024 09:54:33 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=1267