ARG00025o2

• by Dolorous_Edd

  Question is, are we looking at two separate sources or #double?

  http://third.ucllnl.org/cgi-bin/firstimage?RA=09 04 31.11 %2B23 11 30.0&Dec=&Equinox=J2000&ImageSize=2.5&MaxInt=10

  Posted December 26, 2013 7:35 PM

• by ivywong scientist, admin

  A good way to know is to compare the redshifts of the jets with those of the galaxies around them. If I have to hazard a guess, I would suspect that it's a #double .... 😃

  Posted December 26, 2013 11:05 PM

• by ivywong scientist, admin

  Hi @DolorousEdd, Sorry I just realized that my comment above does not make any sense. We don't actually get the redshifts from the jet itself. The redshifts can be obtained from optical spectra of the galaxies, where we will be able to use the emission lines to calculate each of the redshifts. In many galaxies hosting these supermassive black holes, optical broad/narrow emission lines can also be observed from the nucleus of the host galaxies. So we can narrow down which galaxy is the likely match to the radio jet by looking at the line characteristics of the galaxies.

  Posted December 28, 2013 2:30 AM