http://popups.lib.uliege.be/1373-5411/index.php?id=1272 Index terms fr 0 http://popups.lib.uliege.be/1373-5411/index.php?id=4704 In previous communications (Nibart & Dubois, 2006 ; 2008) we have enhanced quantum theory with the transversal distribution of plane waves associated to quanta, from a more general resolution of the differential wave equation which introduced a new quantum number : the Bessel order. In the communication (Nibart & Dubois, 2008) we have deduced several properties of the presence density of non-dimensionless particles and proposed some applications to Cosmology. In the present paper, we propose a solution to the dark matter problem, an explanation of the presence of antimatter in the Universe and we sketch a new concept of vacuum based on extremely high Bessel orders at the cosmological scale. Mon, 14 Oct 2024 16:39:42 +0200 Mon, 14 Oct 2024 16:39:51 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=4704 http://popups.lib.uliege.be/1373-5411/index.php?id=2821 In our previous paper, plane waves of any free massive particle were described with a transversal distribution that is defined by a new quantum number, the Bessel order β, which shows the possibility of a hollow structure. The present paper will consider any free massive particle with spherical waves described by their radial distribution. The scale of different Bessel orders is defined and the properties and structure of the presence density are given. Then it is deduced that particles can have a hollow mass and can be made passive with an inefficient crosssection. Finally, an application to Cosmology is proposed and it is suggested that antimatter of extremely high Bessel orders, in galaxy bulge and in star nucleus, may be a solution to the three problems of galaxy stability, dark matter and antimatter in the Universe. Tue, 03 Sep 2024 14:57:30 +0200 Thu, 10 Oct 2024 16:20:20 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=2821 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