Detection of powerful winds driven by a supermassive black hole from La Palma

Detection of powerful winds driven by a supermassive black hole from La Palma
Credit: Instituto de Astrofísica de Canarias

The supermassive black holes in the centres of many galaxies seem to have a major influence on their evolution. This happens during a phase in which the black hole is consuming the material of the galaxy in which it resides at a very high rate, growing in mass as it does so. During this phase, the galaxy has an active galactic nucleus (AGN).

The effect that this activity has on the host galaxy is known as AGN feedback, and one of its properties is : This is gas from the centre of the galaxy being driven out by the energy released by the active nucleus. These winds can reach velocities of up to thousands of kilometres per second, and in the most energetic AGNs, for example, the quasars, which can clean out the centres of the galaxies impeding the formation of new stars. It has been shown that the evolution of the star formation over cosmological timescales cannot be explained without the existence of a regulating mechanism.

To study these winds in quasars, the EMIR infrared spectrograph on the Gran Telescopio Canarias (GTC) was used. EMIR was developed in the Instituto de Astrofísica de Canarias and is designed to study the coolest and most distant objects in the universe by analysing infrared light. Since June 2016 this has been installed at a focus of the GTC, after going through an exhaustive test phase in the workshops of the Instrument Division of the IAC headquarters in La Laguna.

The data obtained since then has been used to produce several of which the latest is a study of the obscured quasar J1509+0434, published today in the journal Monthly Notices of the Royal Astronomical Society Letters and produced by an international team led by IAC researcher Cristina Ramos Almeida. This quasar is in the and is an analogue of the more distant and far more numerous quasars in which AGN feedback must be affecting the formation of new stars in a major way.

"EMIR has allowed us to study the winds of ionized and from this quasar by using the infrared range. This analysis is very important because they don't always show similar properties, which tells us a great deal about how these winds are produced and how they affect their host galaxies," explains Ramos Almeida. The study of this and other local quasars will allow us to understand what was happening in galaxies when they were younger and when they were forming their structures which we see today.

Based on the new data obtained with EMIR, the team has discovered that the ionized is faster than the molecular wind, reaching velocities of up to 1,200 km/s. However, it would be the molecular wind which is emptying the gas reservoirs of the galaxy (up to 176 solar masses per year). "New observations with ALMA will let us confirm this estimate," explained José Acosta Pulido, a researcher at the IAC and co-author of this study.

The next step is to observe a complete sample of obscured nearby with EMIR to study their ionized and molecular winds. We also want to investigate the stellar populations of their host galaxies. This will allow us to confirm the effect of AGN feedback on the evolution of the directly.


Explore further

Giant molecular outflow detected from the quasar PDS 456

More information: C Ramos Almeida et al. A near-infrared study of the multiphase outflow in the type-2 quasar J1509+0434, Monthly Notices of the Royal Astronomical Society: Letters (2019). DOI: 10.1093/mnrasl/slz072
Citation: Detection of powerful winds driven by a supermassive black hole from La Palma (2019, June 7) retrieved 21 August 2019 from https://phys.org/news/2019-06-powerful-driven-supermassive-black-hole.html
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Jun 07, 2019
However, it would be the molecular wind which is emptying the gas reservoirs of the galaxy (up to 176 solar masses per year).

So again I ask, what is source of this wind if not from the AGN itself? Accretion?? Doesn't that answer cause an itch in your brain?? Or is your brain immune from logic?

Jun 07, 2019
However, it would be the molecular wind which is emptying the gas reservoirs of the galaxy (up to 176 solar masses per year).

So again I ask, what is source of this wind if not from the AGN itself? ...
Perhaps if you submit your question directly, you will get some help with your questions:
Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
Ramón y Cajal Fellow. E-mail: cra (at)) iac.es

Jun 07, 2019
don't worry tux, no one's expecting logic from you.

The rational answer is gravitational attraction.
As the BH accumulates mass
outside the Event Horizon?
Where rational Newtonian Physics are still applicable.

All the junk& debris, gases & dusts & whaterver other crap is flying around loose in the neighborhood?
Is getting dragged in over millions & billions of years.

Starts to bunch up & interfere with other matter. Getting dragged into the Accretion Dusk. This mad mob of colliding crap is getting sped up in it's orbiting the BH/EH.

Newton's every action causes a reaction? Some of the junk is knocked away by collisions.
SSome propelled when it reaches a terminal velocity.

Just like on a race track, faster you go the more energy you produce by fiction.
With Accretion Disks this is what produces the insignificant sparkles of plasma.

The faster the more your vehicle gets pushed up into the wall. The faster you go the more horrendous the collisions.


Jun 07, 2019
"Getting dragged into the Accretion Dusk."

"Just like on a race track, faster you go the more energy you produce by fiction."

See that, Tuxford. Don't you wish that YOU had thought of it first?

:D


Jun 07, 2019
Outflows are ubiquitous in astrophysics. Despite different sizes, velocity and amount of transported energy, luminosity and degree of collimation, they have obvious morphological similarities. However, what is important for us, there is the picture of the outflows from everywhere and none of inflows into somewhere. That is an obvious asymmetry.
https://www.acade...and_Jets
https://www.acade...ilky_Way

Jun 07, 2019
... That is an obvious asymmetry.

Yep, but not to brain disabled want-a-bee cosmologists. They are happy anyway.

Jun 07, 2019
so if i understand the crankery being espoused by the woomongers?

your belief is that the light shining in the room exists before the room's lamp is turned on.
before the bulb's incandescent filaments have heated up?

In turn that heating of the filament causes the wiring to conduct electricity to the lamp?

Then that electrical flow
flips on the wall switch?
Which causes you to rue the dark,
Compelling you to decide to turn on a lamp?

well, okay i guess?
rather implausible
but at SOL?
take a bit of effort
to prove impossible...

just seems a little more of a logic structure t than your usual looney comments.

Jun 07, 2019
The center looks like the eye of a hurricane where pressure is lowest & therefore sucking a lot of loose debris in one end & out the other. Space hurricane jets, what goes in must come out.

However, what is important for us, there is the picture of the outflows from everywhere and none of inflows into somewhere.
How would you tell the difference when the same thing going into the eye is the same thing that MUST come out?

Jun 07, 2019
How was M87 Starry Formation effected by Selfie

IAC
The effect that this activity
Has on the host galaxy
Is known as AGN feedback
And one of its properties
Is galactic winds
This is gas from the centre of the galaxy
Being driven out by the energy
Released by the active nucleus
These winds can reach velocities
Of up to thousands of kilometres per second
And in the most energetic AGNs
For example
The quasars
Which can clean out the centres of the galaxies
Impeding the formation of new stars

As selfies go
they don't
Come much bigger than Selfie
So how do these winds
Of starry starvation compare
When compared
To M87s Selfie?
http://www.iac.es...?lang=en

Jun 08, 2019
ahh, i see your problem now.
when we were children,
we were told that the wind blows.

those of us who matured to learn the sciences discovered that atmospheric wind,
is a concentration of gravitational-bound air being pulled from a region of high concentration towards a region of low concentration.
i.e. low & high pressure.

unfortunately the unimaginative use of the term "wind" for astronomical purposes, is incorrect or at least imprecise.

This is where the word "waves" should have been adopted.
As a more accurate explanation pf the phenomena.

Jun 09, 2019
"it would be the molecular wind which is emptying the gas reservoirs of the galaxy (up to 176 solar masses per year)."

That seems a lot! For comparison Milky Way, which is a rather calm galaxy, has about 1/100 the star formation rate with one estimate at 1.65 solar masses/year [ https://arxiv.org...407.1078 ].

No wonder a quasar AGN may have very little star formation if the majority of the circulated gas goes into the outgoing wind instead.

Jun 10, 2019
Detection of powerful winds driven by a supermassive black hole from La Palma

They detected powerful winds driven by the galactic electric field, the faerie tales suggesting non-existent BH is doing something is just a faerie tale.

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