Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.7802n&link_type=abstract
American Astronomical Society Meeting 203, #78.02; Bulletin of the American Astronomical Society, Vol. 35, p.1325
Astronomy and Astrophysics
Astronomy
Scientific paper
We report statistically significant galaxy-QSO cross-correlations due to gravitational lensing between the APM galaxy catalogue and the Hamburg-ESO Bright QSO Survey, on angular scales of up to 1 degree. By dividing QSOs into redshift bins, the strength of the galaxy-QSO cross-correlation was found to be dependent on redshift, with the strongest correlations occuring at roughly twice the mean redshift of the galaxy sample. In order to demonstrate the significance of the galaxy-QSO cross-correlation signal, we generated 100 random quasar catalogues and computed cross-correlations with APM galaxies. Using this technique, we show that the signal was detected with better than 98% significance at a redshift between roughly z = 0.6 - 0.9. The strength of the signal is several times greater than that predicted by models of lensing by large scale structure.
Nollenberg Joshua G.
Williams Liliya L. R.
No associations
LandOfFree
Angular Cross-correlations between APM Galaxies and Hamburg-ESO QSOs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Angular Cross-correlations between APM Galaxies and Hamburg-ESO QSOs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Angular Cross-correlations between APM Galaxies and Hamburg-ESO QSOs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1420937