Constraining Potential R-mode Heating with the Second Fastest Pulsar

With a rotation rate of 707 Hz, PSR J0952\\−0607 is the fastestspinningpulsar known outside a globular cluster. The modes of stellar oscillation knownas rmodes can convert rotational energy of the fastspinning neutron stars intogravitational waves and internal heating. Xray studies of the surfacetemperature of fast spinning pulsars can tightly constrain the physics ofrmodes. The constraint on the Xray flux from PSR J09520607 measured by Swift,along with low intervening NH (4e20 cm^\\−2) and small source distance(0.97 1.74 kpc), indicate that an XMMNewton observation can place a stronglimit on thermal flux from the surface. PSR J09520607 is thus an excellenttarget for investigating what limits the spin evolution of millisecond pulsars. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]