The new gravitational lens system B1030 + 074
نویسندگان
چکیده
منابع مشابه
Everything You Ever Wanted to Know about the Jvas Gravitational Lens System B1030+074 but Were Afraid to Ask
We present an overview of all the observations (radio-VLA, MERLIN, VLBA, EVN-and optical-WFPC2 and NICMOS-) that were initially used to confirm the gravitational lens nature of the double JVAS system B1030+074. Since the 1.56 arcsec system showed some first indication of variability it has been monitored with the VLA and MERLIN to confirm its variable nature. We also present new VLBA observatio...
متن کاملThe new complex gravitational lens system HE 0230 − 2130 ?
We report the discovery of the new gravitational lens system HE 0230−2130, a QSO at redshift z = 2.162 consisting of at least five distinct components. Three of these are clearly lensed images of the QSO, one is most likely the lensing galaxy, while for the fifth component the identity is unclear: It could be a fourth QSO image (if so, then highly reddened), or another intervening galaxy, or a ...
متن کاملB0850+054: a new gravitational lens system from CLASS
We report the discovery of a new gravitational lens system from the CLASS survey. Radio observations with the VLA, the WSRT and MERLIN show that the radio source B0850+054 is comprised of two compact components with identical spectra, a separation of 0.7 arcsec and a flux density ratio of 6:1. VLBA observations at 5 GHz reveal structures that are consistent with the gravitational lens hypothesi...
متن کاملA new quadruple gravitational lens system: CLASS B01281437
1 University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire SK11 9DL 2 Kapteyn Astronomical Institute, Postbus 800, NL-9700 AV Groningen, the Netherlands California Institute of Technology, Pasadena, CA 91125, USA Netherlands Foundation for Research in Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands 5 National Radio Astronomy Observatory, PO Box 0, Socorro, NM 87801...
متن کاملCLASS B0445+123: a new two-image gravitational lens system
A new two image gravitational lens system has been discovered as a result of the Cosmic Lens All-Sky Survey (CLASS). Radio observations with the VLA, MERLIN and the VLBA at increasingly higher resolutions all show two components with a flux density ratio of ∼7:1 and a separation of 1. 34. Both components are compact and have the same spectral index. Follow-up observations made with the VLA at 8...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1998
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.1998.01804.x