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View Full Version : Discussion: Image of a Cosmic Mirage



Fraser
2003-Jul-17, 07:39 AM
SUMMARY: Astronomers from the European Southern Observatory have found a very rare "Einstein ring" gravitational lens, where the light from a distant quasar is warped and magnified by the gravity of a closer galaxy. The two objects are so closely aligned that the image of the quasar forms a ring around the galaxy from our vantage point here on Earth. With careful measurements, the team was able to determine that the quasar is 6.3 billion light-years away, and the galaxy is only 3.5 billion light-years away, making it the closest gravitational lens ever discovered.


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vanderL
2003-Jul-17, 04:50 PM
I know that Halton Arp will have a vey different opinion on what we see in this picture. He will see this as confirmation that high-redshift pulsars can be connected to lower-redshift galaxies. Would his arguments hold true for this object as well? Also, to my untrained eyes the spectra shown from quasars A and D are not exactly the same.

vanderL
2003-Jul-17, 04:53 PM
Sorry,

Wrong button,

I meant quasars, not pulsars of course.