Other
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...272l..41t&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 272, Sept. 15, 1983, p. L41-L44.
Other
8
Galactic Clusters, Gravitational Lenses, Quasars, Elliptical Galaxies, Mass Distribution, Space Density
Scientific paper
At present, gravitational lensing is the only explanation for cases where multiple QSOs, within arc seconds of one another, are found to have identical spectra. The fraction of QSOs that is gravitationally lensed is considered. An examination is made of recent data on galaxy counts, QSO counts, and radio and optical multiple QSO image surveys. These data are shown to be inconsistent with the hypothesis that all QSOs are gravitationally lensed. On the assumption that QSOs are at their redshift distance, a straightforward calculation based on seeing data, galaxy counts, and QSO counts gives a surface number density of multiple QSOs that is consistent with that found in existing surveys for multiple QSOs. The calculation indicates that the fraction of multiple QSOs will increase with QSO magnitude and that massive elliptical galaxies and clusters probably dominate as lenses.
No associations
LandOfFree
Expected number of multiple QSOs from galaxy and QSO surface density data 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 Expected number of multiple QSOs from galaxy and QSO surface density data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Expected number of multiple QSOs from galaxy and QSO surface density data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1588670