Science
Related: About this forumBlack Holes Not As Powerful As Imagined
9 December 2017, 9:50 am EST By Samriddhi Dastidar Tech Times
Black holes are known to gobble up stars voraciously, due to their intense gravitational pull, and emit streams of matter at nearly the speed of light. A new study has, however, dispelled this long-believed notion.
A team of astronomers from the University of Florida has published a paper, in the journal Science, which indicates the magnetic fields of black holes are not that powerful.
Black Hole V404 Cygni
The scientists conducted the study after getting a rare opportunity to measure the magnetic field of a black hole referred to as V404 Cygni. It is located 8,000 light years away from Earth and has a width of 40 miles.
The measurements were developed from data collected in 2015 when V404 Cygnis had a rare outburst of jets. The lens mirror of the 34-foot Gran Telescopio Canarias in Canary Islands, Spain was used to observe the event.
More:
http://www.techtimes.com/articles/216844/20171209/black-holes-not-as-powerful-as-imagined.htm
Sneederbunk
(14,291 posts)DavidDvorkin
(19,479 posts)eppur_se_muova
(36,269 posts)Better check the original paper -- this journo has chopped it into word salad. "Lens mirror" ?? etc., etc.
JayhawkSD
(3,163 posts)But it appears that the writers of the paper measured one black hole and from those measurements jumped to a lot of conclusions about black holes in general. If so, that strikes me a very sloppy science.
Midnight Writer
(21,768 posts)Fullduplexxx
(7,864 posts)In the constellation of Cygnus
There lurks a mysterious, invisible force
The Black Hole of Cygnus X-1
Six stars of the northern cross
In mourning for their sister's loss
In a final flash of glory
Nevermore to grace the night
Invisible
To telescopic eye
Infinity
The star that would not die
All who dare
To cross her course
Are swallowed by
A fearsome force
Through the void
To be destroyed
Or is there something more?
Atomized, at the core
Or through the astral door
To soar
I set a course just east of Lyra
And northwest of Pegasus
Flew into the light of Deneb
Sailed across the Milky Way
On my ship, the 'Rocinante'
Wheeling through the galaxies,
Headed for the heart of Cygnus
Headlong into mystery
The x-ray is her siren song
My ship cannot resist her long
Nearer to my deadly goal
Until the black hole
Gains control
Spinning, whirling
Still descending
Like a spiral sea
Unending
Sound and fury
Drowns my heart
Every nerve
Is torn apart
Songwriters: Neil Elwood Peart / Gary Lee Weinrib / Alex Zivojinovich