Ultraviolet light curve of the double quasar QO957+561, A,B and determination of the Hubble constant

Details Ultraviolet light curve of the double quasar QO957+561, A,B and determination of the Hubble constant Ultraviolet light curve of the double quasar QO957+561, A,B and determination of the Hubble constant

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263..715g&link_type=abstract

In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 715-71

Astronomy and Astrophysics

Astrophysics

6

Hubble Constant, Light Curve, Quasars, Ultraviolet Radiation, Iue, Red Shift, Time Lag, Ultraviolet Spectra

Scientific paper

The change, between 1979 and 1983, in the ultraviolet continuum of the
double quasar Q0957+561 A,B is described. A possible time delay between
the light variation in the two images is 1.8±0.2 years. This time
delay suggests that the most probable value of the Hubble constant is
67±8 km s-1Mpc-1 up to a redshift of 1.41.

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