X-ray observations of PSR J1740+1000
Zdenka Misanovic (Pennstate University) , George Pavlov (Pennstate), Oleg Kargaltsev (Pennstate)
Extremely long parsec-scale tails associated with pulsars have been detected in recent X-ray and radio observations. We present XMM-Newton and Chandra observations of the middle-aged pulsar J1740+1000, with a tail extending up to 3 pc. The tail has a relatively hard spectrum with a photon index of 1.4-1.5 and a luminosity of 1-2e30 ergs/s in the 0.3-10 keV band. The pulsar spectrum is best fit by a combination of two black-body models with temperatures of 0.16 and 0.08 keV, and a power-law component with a photon index of 1.4. The X-ray data shows 154-ms sinusoidal-shaped pulsations with the pulsed fraction of 20-30