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RE: Primordial killers - excluding common dark matter with black holes

in #steemstem5 years ago (edited)

WIMP-annihilation ... sounds almost like a cosmic purge, as always every post is both very interesting but also mostly confusing as one click leads to another and before i know it i find myself in need of reading the popcult hit by Tyson again to make me feel a little smart hahah.
I don't think there's any need to be apologetic here, @abigail-dantes , certainly not to the sensei here who has been proven (lol-pun) to not look down and always willing to explain. I always imagine a meeting of theoritical and particle physicist to be much like a tea party at Carroll's , with the mad hatter at the head, everyone spouting the most crazy ideas and a cloud of numbers and magic symbols hanging above. After all, they have to question everything in order to be able to prove anything at all, heretics maybe even :) (like galileo would have been i guess) . Longwinding and #offtopic as usual but i chose the name well this time.
I gave up on the link to the article from cornell, lol. Those things are above my braingrade due to the sheer amount of numbers but i think maybe mostly due to the technical jargon, which to a 'pro' in the field is very likely daily language, the links through wikipedia, however ,despite most of them begging for someone who is a 'pro in the field' (lol) to give it a revision to make sure, and some warning that this 'might encourage ideas' that havent been proven. But the way i see it most of it isn't proven.
Without going into a chaotic dissertation on how i feel time has not been proven to exist, it, time after time, strikes me, on how the whole universe is hanging by a thread. Again here clicking through from the primordial black hole to baryonic matter - coming down do "we are not even made of the most common matter in the universe" , assuming with a big capital if that it's actually matter as such because it hasnt really been proven, about 95% ( give or take a few, sensei) of existence has been "potentially observed" but as you so eloquently say "not on earth" (lol its not ...mwell, its funny to me because of the total absurdity and im grateful at least Newtonian Physics has tangible effects or planes and trains would act really funny and there would be no rover on Mars). It's basically the search for god, i could almost quote Tesla on it
->

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(and should maybe state that i'm neither or a dis-believer as i feel both are dogmatic, one accepts blindly that it is and the other accepts blindly that it is NOT, both accept without proof of the other being wrong or they being right, but im a weird and ill-behaved particle myself, especially when observed)

And that's why it's theoretical physics, but from Galileo and (one of my personal favourite pioneers, also a heretic ofcourse) Paracelsus , if it wasn't for them coming up with the craziest ideas that went against everything accepted, and them who called out to burn everything you know and RE-search it yourself to make sure its true, and all their experiments we probably wouldnt be here at the table with Alice (and Bob :p) listening to the next-generation of heretics coming up with the craziest ideas and tearing down the know universe, looking for proof that it actually exists ...

I had a small question too, btw sensei @lemouth, it says somewhere inthere in one of the wikipedias that, according to Hawking, primordial black holes can be as small as (that means mass i assume) 10-8 10 to the minues eight ? isnt that like REALLY small , i mean like how would that be detected in a cosmic background or am i reading that minus wrong ? It's not like i have a degree in mathematics or something ...
somewhere here, something about planck relics guessing that's some "spacedust" left from the few moments after the bang (do correct me thats why im here) ... but the term particle chauvinism also put a smile on my face

i do have a weird sense of humour but im also sincere on the matter here , bit of a brainbuster but always a #goodread, tyvm !!!

oh, btw, probably not noticeable, but i only vote witnesses on one account, so if you saw it gone somewhere else its now here ...
im sure you will agree to my reasoning after reading the introductory post on @stem.witness here
the way i see it, i am a multiple account-holder myself but i only have one free one and the 15 sp delegation from steemit didnt last very long there so most of it in all of it is mine and actually most of it is mine i paid for as i dont do the marketing thing very well and i dont bother with adjusting my opinion per qualche votes in più (yea clint eastwood and stuff i think, i dont speak italian) and so, if i choose to have 10 accounts and disperse my steem across them i actually lose on curation over the whole and the overall effect on the pool remains the same (or is even maybe less as its smaller amounts). Witness-voting however is a different thing, if all my accounts vote once on all my favourite witnesses i would consider that cheating and i think that would do way more damage to the eco-system as a whole over time b/c rich witnesses could simply burn a few thousand steem , create accounts and keep themselves on top (luckily that is technically right now not possible 22 hardforks deep into advancement cough cough cough and luckily , despite my talent for making friends in high places, everyone will ofcourse do the right thing because that is how its done.

So (allow me to apologize for the #offtopic again, sensei, but you know i have a hard time keeping myself in one time-line at once heheh), just so to say the witness vote isnt gone, its just here now, not there ... (like that foton you were trying to track yesterday ;-)

that said, ... my prozaic metaphysics doesn't matter, matter matters ... (glad i made this account so i can spread my raving lunacy to my hearts content when i feel like it) and ofcourse

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It is sometimes the case that a comment is as delightful and enlightening as a post...this one does that. It raises and answers questions--may I say, almost irreverently....which I know @lemouth welcomes. He leads us down a dark, uncertain path and makes no promises. We follow, learn and question.

I don't have mathematical references or even a superficial understanding of physics (beyond which I am acquiring through these blogs), but I kept thinking as I read your comment of a book by Miguel de Unamuno: "La Niebla". Poor confused Augusto, the main character--cannot call him a protagonist because he learns he is just a character in a book. He doesn't write the script of his life--it is written for him.
Anyway, the intersection of physics and our perception of reality--that's where your comment took me. A very interesting journey. I won't go on, because my mind continues to make associations that go back to your comment, and @lemouth's journey into the primordial and the dark....nothing wimpy about that.

He leads us down a dark, uncertain path and makes no promises.

I promise, the next step will be as invisible, but less dark. I just cannot make any promise with respect to the time of delivery :)

Thanks for passing by and reading what I write week after week :)

Dark is Ok. I don't see science as separate from everyday life. Just takes specialized training to understand it sometimes. But that's what we have you for :))
It's a privilege to be in on the conversation.

Oh it is you! I didn’t make the connection quickly this time.

I always imagine a meeting of theoritical and particle physicist to be much like a tea party at Carroll's , with the mad hatter at the head, everyone spouting the most crazy ideas and a cloud of numbers and magic symbols hanging above

This depends. Those meetings can sometimes be quite… errrhh well… lively ;)

But the way i see it most of it isn't proven

This is exactly the problem with dark matter: it works extremely well, but somehow we are missing the direct proof of its existence.

I had a small question too, btw sensei @lemouth, it says somewhere inthere in one of the wikipedias that, according to Hawking, primordial black holes can be as small as (that means mass i assume) 10-8 10 to the minues eight ? i

You are missing the units. A number without a unit has no meaning ;)

Indeed, primordial black holes can be as light as 10-8 kg. But those black holes are not there anymore today, because whilst black holes accrete matter (i.e. they grow), they also evaporate (i.e. they shrink). Small black holes shrink faster than they grow. Inversely, large black holes grow faster than they shrink. In other words, light black holes have fully evaporated since a long long time. 1011 kg is the limit: anything lighter is totally gone today.

For the witness stuff: the easiest is to use proxy: one account votes and all the others follow. In any case, thanks for supporting stem.witness. But why do you need so many accounts?

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Thank you @yapcat :)

You're right, @lemouth does put me at ease when it comes to my (limited) understanding of his blogs. So much so I keep coming back for more. I feel particularly curious about dark matter these days and have even found similarities between his journey in his field and my own in mine. It also helps having people like you whose knowledge on physics surpasses mine by 1000 fold, but also have a kind attitude towards my queries and doubts.

Lovely, lovely gif by the way.
Have a great week.

Best,
Abigail

Having a new comment to my post with questions always makes me happy and I appreciate my regular readers (which set includes you) passing by and letting me know their thoughts. Also I like feeling useful in answering questions ^^

As a researcher, I find it (very) important to communicate about my field, about what I do, in simple terms. There is no secret, which means no secret both for researchers from my community and for the general audience. However, communication in simple terms is not always easy (which is where questions matter; this is also how I can improve myself).

Also, such a thing like a stupid question does not exist. Only stupid answers exist! ^^