Recent content by Bandersnatch

While the SKA does list search for alien signals as one of its projects, I'd wager my hat on it being there mainly as a media angle. It is a radio telescope, it's going to be used for radio astronomy.

The only interaction available here is tidal deformation. However, it is generally pretty weak, scales only linearly with mass, and very strongly (third power) with the inverse of the distance. That is a stronger dependence on distance than of the gravitational force. This makes it very hard...

Y'all assuming she misspelled meat, and not mistakenly typed a superfluous 'a'.

But to what extent? Attenuation by 10 or even 90% doesn't preclude detection. It's not all or nothing. You can't just hand-wave it and call it a day. Rather than coming up with fanciful arguments of dubious value (no, the ISM is very much not like the atmosphere in composition or attenuation...

I don't think that's correct. It was Kleiner.

It's an equal-area projection of the sky. You're looking towards the centre of the galaxy, edge-on, with the 0th latitude being the plane of the Galaxy. The only concentration I see is the one associated with exposure times - you catch more events where you look at longer. I don't think it's...

It's a pulsar wind nebula, with shock waves and a jet aligned with rotation axis. Not a vortex or a cone of radiation of the type that is producing the pulses. https://arxiv.org/abs/1703.05184 I feel that, once again, you're trying to form far reaching conclusions based on how a blurry picture...

Yes, we would. The shift is proportional to the scale factor. But going back to the OP, you did not confirm whether the effect talked about in the thread so far is what you had in mind. Because while it does exist, it's something of an artefact of the comoving coordinates. It can be analysed...

It shouldn't matter, should it? You can always analyse the problem in the rest frame of the binary barycentre, and from there the asteroid comes and leaves with the same energy. Similar to how it works with slingshot manoeuvres.

As I see it, the poster is asking about an effect opposite to objects in expanding space asymptotically joining the Hubble flow over time. I.e. would, in contracting space, small peculiar motions be amplified? My intuition I'd that it should be symmetrical, but I'd have to think about it some...

Are you guys pulling my leg? How is that not 20kg in tension?

In parallel line heaven space is positively curved.

One more reason to use DuckDuckGo instead of Google, imo.

IIRC the team did release an interactive 3d visualiser for the data, called Gaia Sky. I don't think I've ever got it to run past checking out the setup. so I can't tell how good of a fit it might be. It will probably require some learning investment to use, as it's not exactly plug-and-play...

But is it translated from your mother tongue? The nuance might be lost in that case. The question might be e.g. asking you to show that evolution is a constantly occurring process.