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posted by Fnord666 on Thursday September 03 2020, @05:14AM   Printer-friendly

Meet GW190521—a black-hole merger for the record books:

The LIGO/VIRGO collaboration has picked up a gravitational wave signal from another black-hole merger—and it's one for the record books.

The merger is the most massive and most distant yet detected by the collaboration, its signal traveling across the Universe for a billion years before reaching Earth. The merger also produced the most energetic signal detected thus far, showing up in the data as more of a "bang" than the usual "chirp." And the new black hole resulting from the merger is the rarest of all in terms of its intermediate mass (about 150 times as heavy as our Sun), making this the first direct observation of an intermediate-mass black hole.

[...] Details of this latest discovery, dubbed GW190521, appeared today in two concurrent papers published in Physical Review Letters and Astrophysical Journal Letters. The former details the discovery of the gravitational wave signal, while the latter discusses the signal's physical properties and its astrophysical implications.

[...] What makes this event so unusual is that 142 solar masses falls smack in the middle of what's known as a "mass gap" for black holes. Most such objects fall into two groups: stellar-mass black holes (ranging from a few solar masses to tens of solar masses) and supermassive blackholes like the one in the middle of our Milky Way galaxy (ranging from hundreds of thousands to billions of solar masses). The former are the result of massive stars dying in a core-collapse supernova, while the latter's formation process remains something of a mystery.

The fact that one of the progenitor black holes here weighs in at 85 solar masses is also highly unusual, since this is at odds with current models of stellar evolution. The kinds of stars that would give rise to black holes between 65 and 135 solar masses would not go supernova and thus would not end up as black holes. Rather, such stars would become unstable and slough off a significant chunk of their mass. Only then would they go supernova—but the result would be a black hole of less than 65 solar masses.

"From our understanding of how stars age and evolve we expect to find black holes with either less than 65 solar masses or more than 120 solar masses, but none in between," said Frank Ohme, who leads an Independent Max Planck Research Group at AEI Hannover. "The 85 solar-mass black hole in the GW190521 origin system falls right in that gap where it shouldn't be. This can mean two things: our understanding of stars' evolution is incomplete or something different has happened here."

Journal References:
R. Abbott, et al.GW190521: A Binary Black Hole Merger with a Total Mass of M ⊙ [open], Physical Review Letters (DOI: 10.1103/PhysRevLett.125.101102)
R. Abbott, T. D. Abbott, S. Abraham, et al. Properties and Astrophysical Implications of the 150 M ⊙ Binary Black Hole Merger GW190521 - IOPscience, The Astrophysical Journal Letters (DOI: 10.3847/2041-8213/aba493)


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  • (Score: -1, Spam) by Anonymous Coward on Thursday September 03 2020, @11:39AM

    by Anonymous Coward on Thursday September 03 2020, @11:39AM (#1045811)

    Marissa_Van_Eck FAKENAME_NIGGER CUNT_Azuma_Hazuki: So "that was NOT me posting" https://soylentnews.org/comments.pl?noupdate=1&sid=37033&page=1&cid=985641#commentwrap [soylentnews.org] which YES, you said when you_LIBELED me publicly BEFORE it with YOU saying "So that's a "yes" to schizophrenia/schizoaffective disorder and a "no" to "am taking meds for said disorder"_LIBELING ME then...?" per YOUR https://soylentnews.org/comments.pl?noupdate=1&sid=37033&page=1&cid=982854#commentwrap [soylentnews.org] you stupid pitiful FAKENAME_fuck online LIAR piece of fucking SHIT NIGGER?

    OR

    Was it when I GOT YOUR REAL_NAME & found you are a_satanist/anti-god HERE https://redeeminggod.com/sermons/luke/luke_7_36-50/#comment-269796 [redeeminggod.com] also which most ALL you "LEFTIST" LOSER weirdos usually are (which YES, in THIS other exchange "Why do you assume that you finding discussion threads on other sites with me in them will scare me?" quoted from https://soylentnews.org/comments.pl?noupdate=1&sid=38720&page=1&cid=1028402#commentwrap [soylentnews.org] you DID admit FINALLY to saying it was you - ESPECIALLY AFTER dozens of doctors RECENTLY seconded me on Hydroxychloroquin + Zinc (& Vitamin D3 imo along w/ other things I noted that are anti-viral + antibacterial like RAW GARLIC too)).

    Do me a favor - DENY ANY OF THOSE, please & I will continue PROVING YOU ARE A NIGGER_SHITBAG LOSER, devil... as I already DID here https://soylentnews.org/comments.pl?noupdate=1&sid=38720&page=1&cid=1028211#commentwrap [soylentnews.org]

    The TRUE BEAUTY of SATANIST_FUCKS like YOU (antigod assholes)? TRUTH & FACT DESTROYS LIBELOUS_DEVILS LIKE YOU - just like I did you & OTHER AHOLES who doubted what I wrote on what is NOW PROVEN TRUE by DOCTORS, admitted in mainstream media etc. (as I showed in those links' exchanges above easily) & especially LATELY by DOZENS of doctors (I have proof from pros - NOT LIBEL like you did to me PUBLICLY & I can still FRY YOU FOR IT FUCKER, live in fear fuck) MINUS any psych pros backing you.

    SAY 1 THING, YOU STINKING LIBELOUS_NIGGER FUCK & I will CONTINUE_LEVELLING YOU PUBLICLY with facts - not libel as you tried on me, stupid "Marissa_von_DUMBO", lol - please, say 1 thing & the BEATING on you, PUBLICLY will continue in this thread where you will have a HELL of a TIME "downmod burying it" via downmod brigades doubtless ONLY yourself via multiple_sockpuppet accounts etc. (downodding to HIDE it? FORGET IT vs. me - everyone sees you @ it now, lol - thanks, just as I SAID "your kind", demonic SWINE/antigod LOSERS, always do).

    WHY SHOULD YOU FEAR LIBELING_ME PROJECTING IT NOW, TRYING TO HIDE IT TOO?

    TOUGH HIDING YOU LIED about_LIBELING ME, especially via INHERENTLY_DAMAGING STATEMENTS libeling me as you did see GOLDWATER_RULE below too fuckface_CUNT you are (wikipedia proof https://soylentnews.org/comments.pl?noupdate=1&sid=37033&page=1&cid=985366#commentwrap [soylentnews.org] & you said "No jury or judge would back it" here https://soylentnews.org/comments.pl?noupdate=1&sid=37033&page=1&cid=985353#commentwrap? [soylentnews.org] Ok - like I said earlier here which you TRIED TO DOWNMOD_HIDE as I knew you HAVE to (everyone sees it anyhow) - TRY ME FUCKER - say 1 thing you COWARDLY STUPID_LITTLE FUCK & we'll SEE what happens to you, fuckface_CUNT you are).

    As I said "DO YOU WANT TO BE_SUED" for breaking the GOLDWATER_RULE? See here again https://soylentnews.org/comments.pl?noupdate=1&sid=37033&page=1&cid=985329#commentwrap [soylentnews.org] for YOUR (& everyone else's) reference of YOUR LIBEL_of myself

    APK

    P.S.=> Oh, I am going to have a FIELDDAY on YOUR_ASS_fucker - catching you not ONLY IN LIES above, but also in the fact you are a GODLESS_fucking LOSER - come on, say something, question the above where you LIED fucker ("it was not me saying it" but it WAS in those links calling me a nutcase essentially when YOU SAID YOU DID NOT (because it IS grounds for SUING THE LIFE OUT OF YOUR WORTHLESS_ASS because your statements are NOT BACKED BY actual psychiatric_pros in professional psychiatric_grounds_LIBELING ME)) - oh, you are NEVER going to LIVE THIS DOWN & believe you me - I am going to MAKE SURE you don't - live with your_HUMILIATION loser..._apk

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