New high-redshift quasar age issue

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In summary, the conversation discusses the potential challenge for models of quasars posed by the discovery of a new quasar. The speaker mentions that certain models, such as the ritz-type models, offer explanations for current anomalies in cosmological observations. However, they also note that it is premature to discuss this based on a news article and that further scientific research is needed for a more informed discussion.
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sebastian_1
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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.
 
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  • #2
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.
 

What is the "New high-redshift quasar age issue"?

The "New high-redshift quasar age issue" refers to a debate among scientists about the age of the most distant and oldest quasars in the universe. These quasars have redshift values that indicate they are billions of years older than the current age of the universe as estimated by other methods.

Why is this issue important?

This issue is important because it challenges our current understanding of the age and evolution of the universe. If the quasars are indeed as old as their redshift values suggest, it could mean that our current models of the universe's expansion and development are incomplete or incorrect.

What are some possible explanations for the discrepancy in age?

There are several proposed explanations for the discrepancy in age, including errors in measuring the quasars' redshift values, unknown physical processes that could affect the light emitted by the quasars, and the possibility of a non-uniform expansion of the universe.

How are scientists working to resolve this issue?

Scientists are using a variety of methods to try and resolve this issue, including refining their measurements of the quasars' redshift values, studying the properties of the quasars in more detail, and developing new theories and models to explain the observed discrepancy.

What are the implications of the resolution of this issue?

The resolution of this issue could have significant implications for our understanding of the universe and its evolution. It could lead to revisions of current models and theories, and potentially open up new avenues of research and discovery in the field of astrophysics.

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