The X-ray spectra of the first galaxies: 21 cm signatures

@inproceedings{Pacucci2014TheXS,
  title={The X-ray spectra of the first galaxies: 21 cm signatures},
  author={Fabio Pacucci and Andrei Mesinger and Stefano Mineo and Andrea Ferrara},
  year={2014}
}
  • Fabio Pacucci, Andrei Mesinger, +1 author Andrea Ferrara
  • Published 2014
  • Physics
  • The cosmological 21cm signal is a physics-rich probe of the early Universe, encoding information about both the ionization and the thermal history of the intergalactic medium (IGM). The latter is likely governed by X-rays from star-formation processes inside very high redshift (z > 15) galaxies. Due to the strong dependence of the mean free path on the photon energy, the X-ray SED can have a significant impact on the interferometric signal from the cosmic dawn. Recent Chandra observations of… CONTINUE READING

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