HARD X-RAY EMISSION FROM SH 2‐104: A NuSTAR SEARCH FOR GAMMA-RAY COUNTERPARTS

@article{Gotthelf2016HARDXE,
  title={HARD X-RAY EMISSION FROM SH 2‐104: A NuSTAR SEARCH FOR GAMMA-RAY COUNTERPARTS},
  author={Eric V. Gotthelf and Kaya Mori and Ester Aliu and Josep Maria Paredes and John A. Tomsick and Steven E. Boggs and Finn E. Christensen and William W. Craig and Charles J. Hailey and Fiona A. Harrison and J. S. Hong and Farid Rahoui and Daniel K. Stern and W. W. Zhang},
  journal={The Astrophysical Journal},
  year={2016},
  volume={826}
}
We present NuSTAR hard X-ray observations of Sh 2–104, a compact H ii region containing several young massive stellar clusters (YMSCs). We have detected distinct hard X-ray sources coincident with localized VERITAS TeV emission recently resolved from the giant gamma-ray complex MGRO J2019+37 in the Cygnus region. Fainter, diffuse X-rays coincident with the eastern YMSC in Sh2-104 likely result from the colliding winds of a component star. Just outside the radio shell of Sh 2–104 lies 3XMM… 
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