Hard x-ray Morphological and Spectral Studies of the Galactic Center Molecular Cloud SGR B 2 : Constraining Past SGR A * Flaring Activity

@inproceedings{Zhang2015HardXM,
  title={Hard x-ray Morphological and Spectral Studies of the Galactic Center Molecular Cloud SGR B 2 : Constraining Past SGR A * Flaring Activity},
  author={Shuo Zhang and Charles J. Hailey and Kaya Mori and Ma{\"i}ca Clavel and R{\'e}gis Terrier and Gabriele Ponti and Andrea Goldwurm and Franz Erik Bauer and Steven E. Boggs and Finn E. Christensen and William W. Craig and F A Harrison and Jaesub Hong and Melania Nynka and Simona Soldi and Daniel K. Stern and John A. Tomsick and William Weiben Zhang},
  year={2015}
}
In 2013, NuSTAR observed the SgrB2 region and for the first time resolved its hard X-ray emission on subarcminute scales. Two prominent features are detected above 10 keV:a newly emerging cloud, G0.66−0.13, and the central 90′′ radius region containing two compact cores, SgrB2(M) and SgrB2(N), surrounded by diffuse emission. It is inconclusive whether the remaining level of SgrB2 emission is still decreasing or has reached a constant background level. A decreasing X-ray emission can be… CONTINUE READING