SIMBAD references

2009MNRAS.400L..90V - Mon. Not. R. Astron. Soc., 400, L90-L93 (2009/November-3)

Time delays in PG 1115+080: new estimates.

VAKULIK V.G., SHULGA V.M., SCHILD R.E., TSVETKOVA V.S., DUDINOV V.N., MINAKOV A.A., NURITDINOV S.N., ARTAMONOV B.P., KOCHETOV A.Y., SMIRNOV G.V., SERGEYEV A.A., KONICHEK V.V., SINELNIKOV I.Y., BRUEVICH V.V., AKHUNOV T. and BURKHONOV O.

Abstract (from CDS):

We report new estimates of the time delays in the quadruple gravitationally lensed quasar PG 1115+080, obtained from the monitoring data in filter R with the 1.5-m telescope at the Maidanak Mountain (Uzbekistan, Central Asia) in 2004-2006. The time delays are 16.4 d between images C and B and 12 d between C and A1+A2, with image C leading for both pairs. The only known estimates of the time delays in PG 1115 are those based on observations by Schechter et al. -23.7 and 9.4 d between images C and B, and C and A1+A2, respectively, - and as revised by Barkana -25 and 13.3 d for the same image components, but with the use of another method. The new values of time delays in PG 1115+080 may be expected to provide larger estimates of the Hubble constant, thus decreasing a diversity between the H0 estimates taken from gravitationally lensed quasars and those taken from other methods.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): gravitational lensing - quasars: individual: PG 1115+080 - dark matter - distance scale

Simbad objects: 7

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