Radio image of quasar 0137+012,at a wavelength of 18cm. The quasar is 3000 million light-years away. Its central core (small white spot at centre) has ejected "jets" of electrons to form the "clouds" of radio emission above & below. The comma shape of the upper cloud is probably due to the electron jet having moved,or precessed,in the past. The combines data from the VLA radio telescope in New Mexico & the MERLIN network of radio telescopes in England. The VLA's beam (1.2 arcseconds) provides the broad outlines,MERLIN's finer beam (0.4 arc- seconds) the details. The colours represent inten- sity of 18cm emission from the quasar,from white for most intense to dark blue for least intense | |
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Credit: | Science Photo Library / Bank, Jodrell |
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