Last year a team of astronomers detected anunexplained gamma - ray signalfrom the core of the Milky Way and scientists got jolly delirious about it , as it could have been the first evidence of dark issue disintegration .
A unlike team has look at the signaling again , trying to model all the possible explanations put forward in the beginning , and they are quite confident that the signal is actually pulsars rather than dark affair . Theirresultswill be publish in the Astrophysical Journal .
Pulsars were a strong candidate from the very beginning but the signal did n’t appear to be very pulsar - like . It seem rather extended and smooth , which alternatively matched the expected profile for gloomy matter annihilation . pulsar also run to have a very curt lifespan ( about 10 million years ) and the star at the center of the Milky Way lean to be much erstwhile .
" Considering that about 70 percent of all point sources in the Milky Way are pulsars , they were the most likely candidates but we used one of their strong-arm properties to get along to our conclusion , " Mattia Di Mauro from the Kavli Institute for Particle Astrophysics and Cosmology , said in astatement .
" Pulsars have very distinct spectrum – that is , their emissions vary in a specific manner with the energy of the gamma light beam they emit . Using the form of these spectrum , we were able to model the glow of the galactic center correctly with a population of about 1,000 pulsars and without introduce outgrowth that need glowering matter particle . "
For such a big population of pulsar to persist for such a long sentence , they require familiar from which they can steal gasoline and undergo a “ greening ” process . Pulsars are the collapsed cores of maven , the end Cartesian product of small-scale supernovae . They are implausibly dense and whirl hundreds of times per second . Robbing a companion object of its gun countenance them to keep this twirl up . By spinning so apace , and possessing an intense magnetic field , they produce periodic beat that can be detected by telescope .
This subject area is good word for astronomers that want to know more about the central neighborhood of the Milky Way but will let down dark matter hunters . Dark subject , whose existence is still in question , should gather in the effect of Galax urceolata and produce gamma rays but maybethere ’s less therethan expect .
