vicgrinberg,
@vicgrinberg@mastodon.social avatar

We have two new adopted missions!

will capture the ripples of spacetime, all the way from from supermassive black holes colliding to the gravitational ‘ringing’ from the initial moments of our Universe ▶️ https://www.esa.int/Science_Exploration/Space_Science/Capturing_the_ripples_of_spacetime_LISA_gets_go-ahead

And will head to , to study it from the atmosphere to the inner core: ▶️ https://www.esa.int/Science_Exploration/Space_Science/We_re_heading_for_Venus_ESA_approves_EnVision

knud,
@knud@mastodon.social avatar

@vicgrinberg

I am still completely at a loss on how they will be able to isolate signals. will hear a constant loud noise of gravitational waves across the whole time and space of the Universe.

And of course also real noise from electronics, mechanics, solar wind/magnetic fields/X-rays, etc.

vicgrinberg,
@vicgrinberg@mastodon.social avatar

@knud one could say the same about a lot of telescopes :D

That said, I think you know whom to ask in detail.

knud,
@knud@mastodon.social avatar

@vicgrinberg

Sure, but this is basically a single pixel detector and all of the science is in the temporal domain (yes, modulo the arrival time difference for the different arms).

So it's a question of "how many events matching the family of interesting templates vs. noise". If it's a few 1000 per year then it sounds feasible. If it's a few million then I don't know. But what I read now it's the former.

realmurphy,

@knud @vicgrinberg

As always you need something which either stands out of the noise floor or can be filtered by some model.

Whether the environment, instruments or signals contribute to the noise does not really matter that much, as long you can model the noise to some extend 😉

I think there was a quite nice paper on that topic about 10yrs ago, but not sure whether I can dig it out again.

Edit: Not what I was looking for but chapter 9 seems to describes the issue https://arxiv.org/pdf/2108.01167.pdf

sundogplanets,
@sundogplanets@mastodon.social avatar

@vicgrinberg I just talked about Venus/phosphine in my astrobiology class a couple days ago and said there were no Venus missions planned, I'll have to talk about this today, thanks!

vicgrinberg,
@vicgrinberg@mastodon.social avatar

@sundogplanets yay, glad this is a useful bit of news! I think there is also NASA's Davinci mission :) Venus is getting several visitors in the next decade :)

simonbp,

@vicgrinberg @sundogplanets DaVinchi and VERITAS are both in budget stasis, not cancelled, but nothing funded to happen. Hopefully that will improve later in the year, but right now it's not clear if either mission will happen.

So it's really good for the Venus community that EnVision at least is still moving forward.

vicgrinberg,
@vicgrinberg@mastodon.social avatar

@simonbp @sundogplanets ah, I did not know. I thought veritas was the only one in (budget) freeze!

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