Discovery of the Galaxy Proximity Effect and Implications for Measurements of the Ionizing Background Radiation at Low Redshifts

@inproceedings{Pascarelle2001DiscoveryOT,
  title={Discovery of the Galaxy Proximity Effect and Implications for Measurements of the Ionizing Background Radiation at Low Redshifts},
  author={Sebastian M. Pascarelle and Kenneth M. Lanzetta and H. Chen},
  year={2001}
}
We present an analysis of galaxy and QSO absorption line pairs toward 24 QSOs at redshifts between z ≈ 0.2 and 1 in an effort to establish the relationship between galaxies and absorption lines in physical proximity to QSOs. We demonstrate the existence of a galaxy proximity effect, in that galaxies in the vicinities of QSOs do not show the same incidence and extent of gaseous envelopes as galaxies far from QSOs. We show that the galaxy proximity effect exists to galaxy–QSO velocity separations… CONTINUE READING