Gravitational lenses in astrophysics

Details Gravitational lenses in astrophysics Gravitational lenses in astrophysics

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981nyasa.375..287g&link_type=abstract

(AAS, American Physical Society, NASA, et al., Texas Symposium on Relativistic Astrophysics, 10th, Baltimore, MD, Dec. 15-19, 19

Astronomy and Astrophysics

Astrophysics

2

Astrometry, Astrophysics, Gravitational Lenses, Quasars, Red Shift, Astronomical Photography, Cosmology, Gravitational Effects, Missing Mass (Astrophysics), Relativity

Scientific paper

After describing the expected characteristics of observable gravitational lensing effects, attention is given to the observation and interpretation of the lensed objects Q0957+561 and Q1115+080. It is shown that, in addition to permitting the determination of the distance scale for quasars, the large mean amplification of the two observed lenses, which is in the 10-13 factor range, suggests that the brightest large-redshift QSOs may nearly all be lensed objects that appear to be bright because of the lensing. In addition, it has been suggested by Gott (1981) that lenses may allow the investigation of the missing mass problem.

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