A joint NICER and XMM-Newton view of the "Magnificent" thermally emitting X-ray Isolated Neutron Star RX J1605.3+3249

Understand

Thermally emitting X-ray isolated neutron stars represent excellent targets for testing cooling surface emission and atmosphere models, which are used to infer physical parameters of the neutron star.

• Among the seven known members of this class, RX J1605.3+3249 is the only one that still lacks confirmation of its spin period.
• Here we analyze NICER and XMM-Newton observations of RX J1605.3+3249, in order to address its timing and spectral behavior.
• Contrary to a previous tentative detection, but in agreement with the recent work by Pires et al.