This paper systematically accomplishes the numerical simulation of dual-spaced wall contact Compensated Neutron logging and gamma ray energy spectrum logging.

It would seem sensible to seek the source of these in the universe's most conspicuous energy factories: quasars and gamma-ray bursts billions of light-years away from Earth.

If the black hole eats a star every 30,000 years, that hot plasma could provide enough energy to power the gamma-ray bubbles.