Could Quasars Be Ejection Events Instead of Collisions?

  • Thread starter Thread starter turbo
  • Start date Start date
  • Tags Tags
    Galaxy Quasar
AI Thread Summary
The discussion centers around the nature of quasars, debating whether they result from ejection events rather than collisions with their host galaxies. Participants express skepticism about the term "collision" and suggest that quasars may be ejected from their hosts, potentially evolving into different astronomical objects. Questions arise regarding the absence of quasars that should be directed towards Earth if they are indeed ejection events, with no compelling examples identified. The conversation also touches on the concept of intrinsic redshift in quasars, which may change over time, complicating the understanding of their movement and distance. Overall, the dialogue highlights ongoing uncertainties in the mechanisms behind quasar formation and their observed properties.
turbo
Insights Author
Gold Member
Messages
3,157
Reaction score
57
The post that held the link to this paper has been moved. I would like to see comments on this paper, including impressions of the mechanism responsible for the interaction of the quasar and the associated galaxy.

http://arxiv.org/ftp/astro-ph/papers/0509/0509433.pdf

I objected to the interpretation of "collision" as the source of the interaction and suggested ejection, and a couple of minutes before I hit the submit button, EL came up with a link to this paper.

http://www.arxiv.org/PS_cache/astro-ph/pdf/0511/0511245.pdf

Are we seeing a creation event?
 
Last edited by a moderator:
Astronomy news on Phys.org
Unclear on the meaning of a creation event. There are several apparent possibilities, including the merger-ejection scenario suggested by Haehnelt et al.
 
Chronos said:
Unclear on the meaning of a creation event. There are several apparent possibilities, including the merger-ejection scenario suggested by Haehnelt et al.
Creation event, as in the quasar was ejected from the host and may evolve into an object that does not have the same apparent properties (redshift included). Please Google "radiation recoil" or "Slingshot" along wth the term "black hole" to see where the current publications are headed.
 
Simple questions remain unanswered...If quasars are ejection events, where are all the ones that should have been ejected directly at us? Not a single, compelling example exists, and there should be thousands of them.
 
Chronos said:
Simple questions remain unanswered...If quasars are ejection events, where are all the ones that should have been ejected directly at us? Not a single, compelling example exists, and there should be thousands of them.
I pointed out this example some time back, and your response was something to the effect that it wasn't a good example because the quasar is not superimposed directly of the galaxy's nucleus. Unfortunately, quasars are not all that easy to detect, and if this one were superimposed directly over the nucleus of the galaxy, it would likely never have been detected at all.

http://www.innovations-report.com/html/reports/physics_astronomy/report-38639.html

As for the "directly at us" question, some people have asked "where are the blueshifted quasars?", so I'll address that right now. The Burbidges, Arp, et al contend that quasars have intrinsic red shifts that moderate over time. Nowhere in their work is there a contention that this intrinsic redshift is a doppler effect attributable to the motion of the quasar. The contributions to the total redshift of a quasar are 1) intrinsic (and moderating as the quasar matures) in addition to 2) the redshift appropriate to the quasar's cosmological distance from us, and 3) the redshift or blueshift (+or- adjustment) arising from the quasar's motion through space (away from us, toward us, etc).
 
This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed). n.b. I start this...
Today at about 4:30 am I saw the conjunction of Venus and Jupiter, where they were about the width of the full moon, or one half degree apart. Did anyone else see it? Edit: The moon is 2,200 miles in diameter and at a distance of 240,000 miles. Thereby it subtends an angle in radians of 2,200/240,000=.01 (approximately). With pi radians being 180 degrees, one radian is 57.3 degrees, so that .01 radians is about .50 degrees (angle subtended by the moon). (.57 to be more exact, but with...
Back
Top