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Stars that disappear rather than explode could signal a black hole’s beginnings

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  Stars that disappear rather than explode could signal a black hole’s beginnings Sam Wormley <swormley1@gmail.com> - 2015-11-10 13:05 -0600
    Re: Stars that disappear rather than explode could signal a black hole’s beginnings jimp@specsol.spam.sux.com - 2015-11-10 19:25 +0000
      Re: Stars that disappear rather than explode could signal a black hole's beginnings john <johnsefton288@gmail.com> - 2015-11-10 16:19 -0800

#531842 — Stars that disappear rather than explode could signal a black hole’s beginnings

Stars that disappear rather than explode could signal a black hole’s 
beginnings
> http://www.scientificamerican.com/article/astronomers-may-have-witnessed-2-black-hole-births/


> Now there are two possible sightings of black hole births. In July,
> Thomas Reynolds, Morgan Fraser and Gerard Gilmore, all at the
> University of Cambridge, reported they had seen another supergiant
> fade to black amid a star cluster in archival Hubble Space Telescope
> observations of the galaxy NGC 3021. The results from both teams were
> published in separate papers in the Monthly Notices of the Royal
> Astronomical Society.
>
> Certainly there are more prosaic explanations for both candidates:
> the stars could be variable and wildly fluctuating in brightness, or
> they might have drifted behind clouds of dust. The research teams
> plan more in-depth observations with space telescopes to strengthen
> the case for the dark births of black holes.
>
> Among the best sights they could see would be nothing at all. “Death
> has a special property that other sources of stellar variability do
> not,” Kochanek says. “Death is forever.” If the stars reappear,
> Fraser says, “then they clearly haven't exploded,” and the search for
> failed supernovae will go on or fade away.


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#531853

Sam Wormley <swormley1@gmail.com> wrote:
> Stars that disappear rather than explode could signal a black hole?s 
> beginnings
>> http://www.scientificamerican.com/article/astronomers-may-have-witnessed-2-black-hole-births/
> 
> 
>> Now there are two possible sightings of black hole births. In July,
>> Thomas Reynolds, Morgan Fraser and Gerard Gilmore, all at the
>> University of Cambridge, reported they had seen another supergiant
>> fade to black amid a star cluster in archival Hubble Space Telescope
>> observations of the galaxy NGC 3021. The results from both teams were
>> published in separate papers in the Monthly Notices of the Royal
>> Astronomical Society.
>>
>> Certainly there are more prosaic explanations for both candidates:
>> the stars could be variable and wildly fluctuating in brightness, or
>> they might have drifted behind clouds of dust. The research teams
>> plan more in-depth observations with space telescopes to strengthen
>> the case for the dark births of black holes.
>>
>> Among the best sights they could see would be nothing at all. ?Death
>> has a special property that other sources of stellar variability do
>> not,? Kochanek says. ?Death is forever.? If the stars reappear,
>> Fraser says, ?then they clearly haven't exploded,? and the search for
>> failed supernovae will go on or fade away.
 
Or maybe something else entirely. 

-- 
Jim Pennino

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#531944 — Re: Stars that disappear rather than explode could signal a black hole's beginnings

Wow!
Talk about lost in space

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