NICMOS and VLBA observations of the gravitational lens system B1933+503
نویسندگان
چکیده
منابع مشابه
NICMOS and VLBA observations of the gravitational lens system B 1933 + 503
NICMOS observations of the complex gravitational lens system B1933+503 reveal infrared counterparts to two of the inverted spectrum radio images. The infrared images have arc-like structures. The corresponding radio images are also detected in a VLBA map made at 1.7-GHz with a resolution of 6 mas. We fail to detect two of the four inverted radio spectrum components with the VLBA even though the...
متن کاملInfrared observations of the gravitational lens system B 1422 + 231
Images of the multiple-component radio source B1422 + 231 at 2.2 pm show the structure of this source to be essentially the same at radio and infrared frquencies. The most natural explanation for this achromatic structure is gravitational lensing.
متن کاملVlbi Observations of the Gravitational Lens System 0957+561
We present hybrid maps of the A and B images of 0957+561 from each of four sessions of 6 cm VLBI observations that span the six-year interval 1987–1993. The inner-and outer-jets are clearly detected and confirm the structures reported previously. There is no evidence of change in the separation between the core and inner-jet components, so the prospect of measuring the time delay using differen...
متن کاملNICMOS images of JVAS/CLASS gravitational lens systems
We present Hubble Space Telescope (HST) infrared images of four gravitational lens systems from the JVAS/CLASS gravitational lens survey and compare the new infrared HST pictures with previously published WFPC2 HST optical images and radio maps. Apart from the wealth of information that we get from the flux ratios and accurate positions and separations of the components of the lens systems that...
متن کاملHST Observations of the Gravitational Lens Systems
High angular resolution PC1 images of the gravitational lens systems HE 1104−1805 and J03.13 are presented. Using a method described in Remy et al. (1997a), optimal TinyTim PSFs are constructed to fit at best the lensed pointlike components. The derived photometry of the GL components and the detection of the lens galaxy for HE 1104-1805 are discussed. Textbook case FOS spectra of J03.13 A and ...
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: 1999
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.1999.02285.x