gary
17-11-2017, 02:52 PM
In an article today at Scientific American (https://www.scientificamerican.com/article/through-a-gas-darkly-scientists-trace-the-origins-of-earths-antimatter/), Charles Q. Choi reports on
the discrepancy between the higher amounts of antimatter positrons
bombarding the Earth's atmosphere from outer space compared to
what models predicted.
Now the team behind the Altitude Water Cherenkov (HAWC) gamma-ray
observatory in Mexico believe that they can now eliminate one possible
source - two nearby pulsars, Geminga and PSR B0656+14, located some
815 and 950 light-years from Earth, respectively.
A positron is the antimatter counterpart of the electron.
So if the pulsars are not the source of the positrons hitting Earth, the team
are beginning to wonder if the true source has something to do with dark
matter.
Full story here :-
https://www.scientificamerican.com/article/through-a-gas-darkly-scientists-trace-the-origins-of-earths-antimatter/
the discrepancy between the higher amounts of antimatter positrons
bombarding the Earth's atmosphere from outer space compared to
what models predicted.
Now the team behind the Altitude Water Cherenkov (HAWC) gamma-ray
observatory in Mexico believe that they can now eliminate one possible
source - two nearby pulsars, Geminga and PSR B0656+14, located some
815 and 950 light-years from Earth, respectively.
A positron is the antimatter counterpart of the electron.
So if the pulsars are not the source of the positrons hitting Earth, the team
are beginning to wonder if the true source has something to do with dark
matter.
Full story here :-
https://www.scientificamerican.com/article/through-a-gas-darkly-scientists-trace-the-origins-of-earths-antimatter/