Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprb17084c&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
We report the detection, using the Chandra X-ray observatory, of an X-ray Einstein Ring in the gravitational lens system PKS 1830-211. We find a significant correlation between the X-ray and radio morphologies suggesting the origin of the X-ray ring is synchrotron emission from the jet of the distant z= 2.51 lensed blazar. An analysis of the spectra of the individual images suggests significant differential absorption with most of the absorption ( NH(z = 0.886) ~ 2e22 cm-2) occuring towards the SW image. The Chandra observations of PKS 1830-211 were taken approximately one year apart and show significant spectral variablity. We present various mechanisms to explain this spectral variability. Our spectral-spatial analysis indicates a f_NE/f_SW flux ratio of ~ 1.1 consistent with that observed in the radio and infrared bands but significantly different from the recently reported estimate inferred from previous ASCA observations.
Chartas George
Garmire Gordon
Gupta Varsha
Jauncey Dave
Lovell Jim
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