58 citations · 249 across the 8 of their papers we have counts for
8 papers
Variable X-ray Absorption toward Gravitationally-Lensed Blazar PKS1830-211
Xinyu Dai, Smita Mathur, George Chartas +2
We present X-ray spectral analysis of five Chandra and XMM-Newton observations of the gravitationally-lensed blazar PKS1830-211 from 2000 to 2004. We show that the X-ray absorption…
Helical Jet in the Gravitationally Lensed Blazar PKS1830-211
S. Nair, C. Jin, M. A. Garrett
Recent radio VLBI observations of the complex gravitationally lensed system PKS1830-211 have thrown up some questions with regard to the processes occuring at the heart of the blaz…
Changes in the measured image separation of the gravitational lens system, PKS 1830-211
C. Jin, M. A. Garrett, S. Nair +3
We present eight epochs of 43 GHz, dual-polarisation VLBA observations of the gravitational lens system PKS 1830-211, made over fourteen weeks. A bright, compact ``core'' and a fai…
Changes in the angular separation of the lensed images PKS 1830-211 NE & SW
Jin Chengjin, M. A. Garrett, S Nair +2
We present 8 epochs of 7 mm dual-polarization VLBA observations of the gravitational lens system PKS 1830-211 made over the course of 14 weeks. Clear changes in the relative positi…
Modeling the ten-image lensed system B1933+503
S. Nair
A gravitational lens model is presented for the newly discovered 10-image system B1933+503. The underlying object, revealed by modeling, is a triple radio source on the scale of a…
The complex gravitational lens system B1933+503
C. M. Sykes, I. W. A. Browne, N. J. Jackson +15
We report the discovery of the most complex arcsec-scale radio gravitational lens system yet known. B1933+503 was found during the course of the CLASS survey and MERLIN and VLA rad…