Richard P. Feynman admonished me in 1968 at Cal Tech "Jack, always try to prove your theories wrong."
Remember, there are no on shell exotic dark matter particles in my theory - this observation consistent with my unique suggestion where w = -1 positive pressure mimics w = 0 CDM - no one else has suggested my explanation as far as I am aware!
"In recent years, some theorists championed the idea that particles of dark matter were annihilating one another, or with atomic matter, producing electrons and positrons that annihilate into 511-keV gamma rays. But other scientists remained skeptical, noting that the dark matter particles had to be significantly lighter than most theories predicted. ... 'The Integral results seem to rule out dark matter as the major source of the gamma rays,' said Gerry Skinner, who currently works at NASA’s Goddard Space Flight Center in Greenbelt, Md., Skinner is a co-investigator of Integral’s SPI (SPectrometer for Integral) instrument, which made this discovery. ... The new results give astronomers a valuable new clue and point away from dark matter as the origin of the antimatter. Beyond the Milk Way's center, the cloud is not entirely spherical. Instead it is lopsided with twice as much on one side of the galactic center as the other. Such a distribution is unusual because gas in the inner region of the galaxy is relatively evenly distributed"
Solved: Mystery of Giant Cloud of Antimatter Surrounding Milky Way's Core