A star appears to have collapsed straight into a black hole without supernova (2017)

Here&#x27;s a short (12 page) and pretty easy article from The Astrophysical Journal (2003), about end of life for massive stars. And why some would &quot;directly&quot; collapse (no big &amp; bright supernova) into black holes.<p><a href="https:&#x2F;&#x2F;open.clemson.edu&#x2F;cgi&#x2F;viewcontent.cgi?article=1006&amp;context=physastro_pubs" rel="nofollow">https:&#x2F;&#x2F;open.clemson.edu&#x2F;cgi&#x2F;viewcontent.cgi?article=1006&amp;co...</a>

It’s a weird and scary thought.<p>Imagine seeing that up fairly close - a massive star just shrivel into a black hole and wink out.

It&#x27;s been a while since I crawled Wikipedia&#x27;s rabbit hole on this - but I recall there being regions of the stellar &quot;mass vs. metallicity&quot; graph in which direct collapse to a black hole is the expected outcome.<p>Is there an astrophysicist in the house?

What is the timespan of such an event?

<p><pre><code> As many as 30 percent of such stars may quietly collapse into black holes no supernova required. </code></pre> where &#x27;such&#x27; refers to 25 solar mass stars.<p>Is that a significant contribution to &#x27;dark matter&#x27;?

Here is an article about some JWST data of the star.<p><a href="https:&#x2F;&#x2F;arxiv.org&#x2F;abs&#x2F;2309.16121" rel="nofollow">https:&#x2F;&#x2F;arxiv.org&#x2F;abs&#x2F;2309.16121</a>

(2017)

Could be an advanced civilisation sucking all the stars energy into the back of their spaceship.

Or something just moved in front of it. It did not rage against the dying of the light, the definition of out with a whimper.