Exploring the effects of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="normal">Δ</mml:mi></mml:math> baryons in magnetars

Strong magnetic fields can modify the microscopic composition of matter affecting also the properties and evolution of massive objects such as compact stars. This paper explores the combined effect of heavy baryons---hyperons and $\mathrm{\ensuremath{\Delta}}$'s---on the structure of neutron stars with strong magnetic fields, so-called magnetars. The authors show that $\mathrm{\ensuremath{\Delta}}$'s are favored over hyperons and that contrary to expectations they do not make the nuclear matter equation of state softer.