Phase-Resolved Spectroscopy of Geminga Shows Rotating Hot Spot(s)

@article{Caraveo2004PhaseResolvedSO,
  title={Phase-Resolved Spectroscopy of Geminga Shows Rotating Hot Spot(s)},
  author={P. A. Caraveo and Andrea De Luca and Sandro Mereghetti and Alberto Pellizzoni and Giovanni Fabrizio Bignami},
  journal={Science},
  year={2004},
  volume={305},
  pages={376 - 379}
}
Isolated neutron stars are seen in x-rays through their nonthermal and/or surface thermal emissions. X-ray Multimirror Mission–Newton observations of the Geminga pulsar show a 43–electron volt spectrum from the whole neutron star surface, as well as a power-law component above 2 kiloelectron volts. In addition, we have detected a hot (170 electron volts) thermal emission from an ∼60-meter-radius spot on the pulsar's surface. Such a thermal emission, only visible at selected phase intervals, may… Expand
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