Suzaku Observation of HESS J1825-137: Discovery of Largely-Extended X-rays near from PSR J1826-1334

Understand

We observed the brightest part of HESS J1825-137 with the Suzaku XIS, and found diffuse X-rays extending at least up to 15' (~ 17 pc) from the pulsar PSR J1826-1334.

• The spectra have no emission line, and are fitted with an absorbed power-law model.
• The X-rays, therefore, are likely due to synchrotron emission from a pulsar wind nebula.
• The photon index near at the pulsar (r<1.5') is 1.7 while those in r=1.5-16 are nearly constant at Gamma=2.0.