ASA’s Fermi Gamma-ray Space Telescope

Astronomers trace cosmic ray neutrino back to remote blazar

13 July 2018 Astronomy Now

For the first time, a ghostly neutrino detected at the IceCube observatory in Antarctica has been traced back to its source, a super-massive black hole in a “blazar” galaxy four billion light years away.

Neutron stars, not dark matter, may explain Milky Way’s gamma-ray excess

3 February 2016 Astronomy Now

It has been suggested that gamma rays coming from the dense region of space in the inner Milky Way galaxy could be caused when invisible dark matter particles collide, but two new studies suggest that the gamma ray bursts are due to other astrophysical phenomena such as fast-rotating stars called millisecond pulsars.

NASA’s Fermi finds hints of gamma-ray cycle in active galaxy

14 November 2015 Astronomy Now

Astronomers using data from NASA’s Fermi Gamma-ray Space Telescope have detected hints of periodic changes in the brightness of a so-called “active” galaxy, whose emissions are powered by a supersized black hole. If confirmed, the discovery would mark the first years-long cyclic gamma-ray emission ever detected from any galaxy, which could provide new insights into physical processes near the black hole.