Relativistic jets are observed throughout the Universe and strongly affect their surrounding
environments on a range of physical scales, from Galactic binary systems to galaxies and
clusters of galaxies. All types of accreting black hole and neutron star have been observed
to launch jets, with the exception of neutron stars with strong magnetic fields,(higher than
1012 gauss), leading to the conclusion that their magnetic field strength inhibits jet
formation. However, radio emission recently detected from two such objects could have a jet …

Relativistic jets are observed throughout the Universe, strongly impacting their surrounding
environments on all physical scales, from Galactic binary systems to galaxies and galaxy
clusters. An important avenue to understand the formation of these jets is by characterising
the systems and circumstances from which they are launched. Whenever a black hole or
neutron star accretes matter, it appears to inevitably result in the launching of a jet, the only
exception being the most common type of accreting neutron stars: those with strong ($ B\geq …