Changes in a distant quasar

Changes in a distant quasar
This image from the MUSE instrument on ESO's Very Large Telescope shows the active galaxy Markarian 1018, which has a supermassive black hole at its core. The faint loops of light around the galaxy are a result of its interaction and merger with another galaxy in the recent past. Credit: ESO/CARS survey

Yale astronomers Grant Tremblay and Meredith Powell are part of the first research team to document a "changing look" quasar through a full cycle from dim to bright to dim again.

Quasars are the extremely bright cores found in some galaxies, powered by supermassive black holes. Their brightness is believed to come from the hot material that falls into the black hole, a process called .

"Thirty years ago this very dramatically brightened, becoming a Type 1 quasar," Tremblay said. "We discovered this year that it has now dimmed again, making it the first such object to go 'there and back again.'"

Two research studies of the object—galaxy Markarian 1018—will appear in the journal Astronomy & Astrophysics. A portion of the data used in the studies comes from the Close AGN Reference Survey (CARS), a sampling of 40 nearby Active Galactic Nuclei. Yale is a founding member institution of the survey.


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Starving black hole returns brilliant galaxy to the shadows

More information: www.cars-survey.org/
Journal information: Astronomy & Astrophysics

Provided by Yale University
Citation: Changes in a distant quasar (2016, September 16) retrieved 20 September 2019 from https://phys.org/news/2016-09-distant-quasar.html
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Sep 16, 2016
"Proper motion", "rapid changes", "recent mergers" etc. are not possible to be observed if the quasars are at the remote periphery of the "expanding universe". The rational explanation for these reported observations are that the quasars are objects, ejected from nearby galaxies; as Halton Arp, Burbidge et al. demonstrated by observational evidence.

Dialectical thought and the latest results from the LHC has now undone the ontological and the philosophical foundation of "spacetime" manifold and mathematical idealism based GR. The virtual pillars of Einstein's "Castle in the Air" made of "Continuous fields" (along with Big Bang, Gravitational Waves, Higgs boson etc. ad nauseum of official physics) have been demolished.
1. https://www.thegu...83197999
2. https://www.amazo...4041884X

RNP
Sep 16, 2016
@Bigbangcon
[qThe rational explanation for these reported observations are that the quasars are objects, ejected from nearby galaxies; as Halton Arp, Burbidge et al. demonstrated by observational evidence.

There is nothing rational about adhering to ideas that have been repeatedly proven false by observational evidence.

Sep 16, 2016
There is nothing rational about adhering to ideas that have been repeatedly proven false by observational evidence.
...............you mean like pics of Black Holes? No one has ever seen one, except of course Schneibo.


Sep 16, 2016
...............you mean like pics of Black Holes? No one has ever seen one, except of course Schneibo.


Your routine attention seeking and misrepresentation of DaS's position is bordering on harassment Benni. Time to get a new toy pony to ride around.

Sep 16, 2016
On Topic:
I wonder if this observation could be caused by dusty "debris" from the merger passing in between our line of sight and the quasar. I bet the smart guys have already thought of this or ruled it out I am just not smart enough to know how.

Sep 16, 2016
...............you mean like pics of Black Holes? No one has ever seen one, except of course Schneibo.


Your routine attention seeking and misrepresentation of DaS's position is bordering on harassment Benni. Time to get a new toy pony to ride around.


........then you show us the pics you have. Here you are the current caricatures of asstrophysics on this site, claiming to have so much testable & observational evidence but never producing it.

So how about if you show us RNP's claim of "observational evidence" of BHs? For sure it isn't in the leadoff pic in this article. You see EF, neophytes like you are simply FOLLOWERS.......I follow no one but for the exceptions of those who have established themselves within the fields of scientific achievement, that does not describe YOU, RNP, Schneibo, etc, it does describe Einstein who flat out rejected the veracity of Schwarzschild's Black Hole Math claims.


RNP
Sep 17, 2016
@FineStructureConstant

So how about if you show us RNP's claim of "observational evidence" of BHs?.....


I did not claim any evidence for BHs, I said there was evidence against your ridiculous claim that quasars have been ejected from nearby galaxies - the most obvious being that all quasars are all found at the center of galaxies.

RNP
Sep 17, 2016
@FineStructureConstant
My apologies to you. The comment should have been addressed to Benni.

Sep 17, 2016
I wonder if this observation could be caused by dusty "debris" from the merger passing in between our line of sight and the quasar.


I don't know about this one but in other changing look quasars there were attempts to explain it with obs curation. Less likely the merger (because 30 years is not long) and more likely the dusty torus around the SMBH. Long story short no sensible dust law they could think of could explain the changes observed.

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