XMM-Newton detection and spectrum of the second fastest spinning pulsar PSR J0952-0607

Understand

With a spin frequency of 707 Hz, PSR J0952-0607 is the second fastest spinning pulsar known.

• It was discovered in radio by LOFAR in 2017 at an estimated distance of either 0.97 or 1.74 kpc and has a low-mass companion with a 6.42 hr orbital period.
• We report discovery of the X-ray counterpart of PSR J0952-0607 using XMM-Newton.
• The X-ray spectra can be well-fit by a single power law model (Gamma = 2.5) or by a thermal plus power law model (kTeff = 40 eV and Gamma = 1.4).