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 with consequences on stellar macroscopic properties. Within this context, we study, for first time, possibility appearance spin-3/2 $\Delta$ baryons in magnetars. We make use two different relativistic models equation state dense under influence strong considering effects Landau levels and anomalous moment (AMM) proportional to spin all leptons. In particular, analyze AMM time. {We also obtain global properties corresponding EoS numerically study role baryons.} find that they are favored over hyperons, which causes an increase isopin asymmetry a decrease polarization. that, contrary what generally occurs when new degrees freedom introduced, $\Delta$s do not significantly softer magnetars less massive. Finally, field distribution inside given star is affected by presence $\Delta$s.