Speaker
Description
We study cooling neutron-stars with strong magnetic fields through neutrino emissions from neutrino and antineutrino pair emission [1] and the Direct urca (DU) processes. We perform exact relativistic quantum calculations by introducing the Landau levels and anomalous magnetic moments [2]. Strong magnetic fields supply energy and momentum and make these processed even in the conditions where these processes do not occur in no magnetic field.
Then, we find that when the strength of the magnetic field is B = 10^14-10^16 G, these contributions are much larger than the modified Urca process.
[1] T.Maruyama et al., Phys Lett. B 805, 135413 (2020).
[2] T. Maruyama et al., Phys. Rev. D91, 123007 (2015); Phys. Lett. B757, 125 (2016); Phys. Lett. B779, 160 (2018).
