Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

A New high-redshift quasar age issue

  1. Dec 15, 2017 #1
    Does the new quasar http://news.bbc.co.uk/2/hi/science/nature/649059.stm indicate a challenge for models of quasars? Some of the ritz-type models do provide explanations for these, e.g., http://faculty.washington.edu/devasia/Physics/Devasia_cosmology.pdf

    It provides potential explanations to current anomalies in cosmological observations such as: (i) the presence of large number of spectroscopic binaries with short time periods even though nearby visual binaries are not seen with such short time periods; (ii) the apparent lack of time dilation in quasar observations even though time dilation has been observed in supernovae (SNe) light curves; (iii) the possibility that some quasars might be closer than the distance predicted by their large spectroscopic redshifts; and (iv) the difficulty in identifying supernovae progenitors.
     
  2. jcsd
  3. Dec 15, 2017 #2

    PeterDonis

    Staff: Mentor

    We can't really discuss this based on a news article. I don't know if there has been an actual scientific paper on the results, but if and when there is one, that is what discussion here should be based on.

    Pending a valid source, this thread is closed.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook