The orbit and spectra of the brightest accreting pulsar: NGC 5907 ULX-1
Abstract
NGC 5907 ULX-1 is the most luminous of the 3 ULXs known to be accretingpulsars. At 17.1 Mpc, its X-ray isotropic luminosity peaks at 1e41 erg/s,500 times the Eddington limit for a NS. Understanding the physics of thisextreme object, for a long time prototypical of IMBHs, which defeatssimple theoretical explanations, is interesting per se and essentialfor population studies and searches for pulsation in other ULXs. Themost effective strategy is to repeatedly observe it with XMM and NuSTARwith a carefully devised schedule. Their synergy will provide us alsowith orbital- and spin-phase-resolved broad-band X-ray spectroscopy,essential for a better understanding of this object, in the context ofother extreme ULXs.
- Publication:
-
XMM-Newton Proposal
- Pub Date:
- October 2016
- Bibcode:
- 2016xmm..prop..138B