Resumen de Shaken and stirred
Pontzen talks about an unexpected cosmic ingredient that's pushing mighty dark matter around. Last April, a researcher from outside the Fermi collaboration, Christoph Weniger of the Max Planck Institute for Physics in Munich, Germany, set astrophysics afizz with the suggestion that Fermi had indeed seen a dark matter signal--not from dwarf galaxies, but from near the heart of the Milky Way itself. His work indicated that a significant excess of gamma rays from that general direction, all with the same energy of around 130 gigaelectronvolts, was buried in publicly released data from the Fermi satellite. The signal is weak, and where it is strongest is not at the Milky Way's center, where you would expect dark matter to accumulate, but around 1°off-center. This misalignment nourishes a suspicion that it is the product of some obscure miscalibration of the telescope.
