Hi, cosmic mystery buffs. It has recently been reported that the Spitzer survey data reveals an order of magnitude more stellar formation in the Milky Way disc than had previously been seen. These new stars appear as bubble-like images. Yet, close to the galactic center, there is a drop-off in their number. The mystery is that most stellar formation should occur at the galactic center, because that is where most gas is supposed to be concentrated, it is said.
During the past month, on the following blogs, I proposed: on 2/4/12, that the sharp edges of the recently discovered Milky Way gamma ray bubbles were probable manifestations of the Milky Way halo, and I predicted that a similar sharp edged envelope would be detected around the galactic disc; on 2/15/12, that a massive body displaces its mass equivalence in surrounding vacuum energy, increasing with increased distance from that body; and on 2/23/12, that (weakly interacting) massive particles are likely to be gravitationally bound within the halo of the Milky Way.
It seems serendipitous that “the drop-off in the bubble census on either side of the galactic center” is evidence: that the galactic black hole of the Milky Way displaces most of the surrounding vacuum energy into the periphery of its halo, so that very little surrounds the black hole; that there is a sharp cutoff, at such periphery, when a sufficiently large spherical volume encompasses the exact amount of mass equivalent vacuum energy that is equal to the mass of the black hole; that the concentrated mass equivalent vacuum energy gravitationally binds the ambient gas and dust within such periphery; that star formation is spawned by the concentrated gas and dust in such periphery; and that insufficient gas and dust remains close to the galactic center to support star formation.
For a more detailed explanation of these conclusions, you are invited to contact me, at email@example.com