Bent Jets from Black Holes - Sixty Symbols

Professor Mike Merrifield discusses why the jets from some galaxies can be bent into so-called NATS and WATS.
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This project features scientists from The University of Nottingham


Sixty Symbols videos by Brady Haran

[philosopherkink]

Best professors
Best questions from the host
This channel is a treasure <3

[_..---]

It's incredible how buoyancy can still affect objects as diffuse and massive as this.

[mustafa]

You know Brady’s mind blown when he sits quietly.

[oliverb]

Prof Merrifield is easily my favorite guest on this channel

[coltoncrofts]

I love how Brady’s final question to every video is “what would happen if I was in a space suit”

[NortheastGamer]

Brady's face at 3:40 perfectly matched mine at the same time.

[Abhishek-hyxe]

We need more from this channel. And I love this format.

[robertsmith]

Merrifield is my favourite astronomer.

[Michael_Raymond]

Final question: "So could you be in one of these tails and not realise?"
Answer: "Well yes, right up until definitely no."

[cytonicstarspren]

Another Prof. Mike Merrifield video! Keep up the good work!!

[timseguine]

"It's a WAT"
"It's a wizard, Harry"

[davidiverson]

3000 km*s^-1 (or 1% the speed of light) is "not hugely fast." 7:39. I'm definitely using this when I get pulled over for driving 0.04 km*s^-1.

[jansenart]

8:36. Well, I'm gonna, Dr. Merrifield. And Brady's coming with me. Try to stop us.

[sonarbangla]

The magnetic field spewing out electron jets is very interesting from the point of view of super conducting currents contributing as a motor action spinning the BH almost at the speed of light.

[VaguelyAmused]

This is facinating, but my tiny mind can't grasp how the jets know which way is "up" when talking about the buoyancy effect. I think at 3:40 Mike explains it but I've replayed it a few times and I can't wrap my head around it. If the primary cause of the jets bending is the ram pressure through a cluster, does the buoyancy force have a centroid that is the COG of the cluster and the jets "float" away from that point?

Piling missunderstanding on top of missunderstanding, but could the difference between a NAT and a WAT be partly explained by how far through the custer the Galaxy is? Ram pressure will always bend the jets away from the direction of motion, but the buoyancy force would either work against the ram pressure or with it depending where the Galaxy is in relation to the COG of the cluster?

[samudrajs]

Wow. Never thought buoyancy would play such a big role in galaxies

[oclipa]

So we *shouldn't* try it? Well, that's my plans for the weekend screwed then.

[spsheridan]

How does one know the difference between NATs and WATs is not simply the perspective from which we observe the jets? Couldn’t a U-shaped WAT viewed nearly edge-on be seen as a V-shaped NAT? Is the Doppler shift of material from the outflowing jets used to eliminate this ambiguity?

[TRayTV]

This seems to suggest that the source of the radio jets are co-orbiting other massive bodies which are not producing radio jets.

[AntonFetzer]

TIL: There is buoyancy and wind on intergalactic scales. Mind blown. The distances they are talking about are million times larger than the size of out solar system, which is already mind boggling large.