http://popups.lib.uliege.be/1373-5411/index.php?id=1269 Index terms fr 0 http://popups.lib.uliege.be/1373-5411/index.php?id=4680 We introduced, two years ago (Popescu, 2007), a new model of the atomic nucleus, the DNA nuclear-model, where the neutrons and the protons with their spin up and down seem to be the equivalents of the four bases of the DNA life molecule : Adenine (A), Thymine (T), Cytosine (C) and Guanine (G). The four elements : p↑, p↓, n↑, n↓ are bound in a chain, a close loop. With this model we succeeded to explain nuclear phenomena like : alpha radioactivity, fission or fusion. Our present work goes further by considering the quark (anti quark) structure of the nucleons : protons, neutrons, or of the quanta (quark antiquark) of the nuclear field interaction : the pion. We suggest that the atomic nucleus is a loop chain of the quarks (real or virtual antiquark). Mon, 14 Oct 2024 16:21:29 +0200 Mon, 14 Oct 2024 16:21:36 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=4680 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