A huge reservoir of ionized gas around the Milky Way: Accounting for the Missing Mass?

@article{Gupta2012AHR,
  title={A huge reservoir of ionized gas around the Milky Way: Accounting for the Missing Mass?},
  author={Aritra Gupta and Smita Mathur and Yair Krongold and Fabrizio Nicastro and Massimiliano Galeazzi},
  journal={The Astrophysical Journal},
  year={2012},
  volume={756}
}
Most of the baryons from galaxies have been "missing" and several studies have attempted to map the circumgalactic medium (CGM) of galaxies in their quest. We report on X-ray observations made with the Chandra X-Ray Observatory probing the warm-hot phase of the CGM of our Milky Way at about 106 K. We detect O VII and O VIII absorption lines at z = 0 in extragalactic sight lines and measure accurate column densities using both Kα and Kβ lines of O VII. We then combine these measurements with the… Expand

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