The multiple QSO PG1115 + 08 - A fifth component?

Details The multiple QSO PG1115 + 08 - A fifth component? The multiple QSO PG1115 + 08 - A fifth component?

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...149l..13f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 149, no. 1, Aug. 1985, p. L13-L16.

Astronomy and Astrophysics

Astrophysics

25

Gravitational Lenses, Interferometry, Quasars, Speckle Patterns, Astronomical Models, Magnitude

Scientific paper

The authors report observations of the A twin component of the multiple quasar PG 1115+08, with the technique of speckle interferometry, on 1984, May. At that time, the magnitude difference between A2 and A1 was 1 mag., whereas it was known to be ≅0 before. The faintest component is elongated, almost along the A1A2 axis. The authors discuss the possible causes of this structure; the most likely is that it is due to a fifth component of the gravitational image of the QSO.

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