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'Bent time' tips pulsar out of view
BBC ^
| 9 January 2015
| Jonathan Webb
Posted on 01/10/2015 2:33:39 PM PST by moose07
A pulsar, one of deep spaces spinning lighthouses, has faded from view because a warp in space-time tilted its beams away from Earth.
The tiny, heavy pulsar is locked in a fiercely tight orbit with another star.
The gravity between them is so extreme that it is thought to emit waves and to bend space - making the pulsar wobble.
By tracking its motion closely for five years, astronomers determined the pulsars weight and also quantified the gravitational disturbance.
Then, the pulsar vanished. Its wheeling beams of radio waves now pass us by, and the researchers have calculated that this can be explained by precession: the dying star wobbling into the dip in space-time that its own orbit created.
(Excerpt) Read more at bbc.co.uk ...
TOPICS: Science
KEYWORDS: pulsar; stringtheory; xplanets
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To: moose07
Interesting. Since space is what’s between objects, (space is not an object) it’s difficult to see how space can be bent.
21
posted on
01/10/2015 3:56:25 PM PST
by
I want the USA back
(Media: completely irresponsible. Complicit in the destruction of this country.)
To: dangus
The one thing I need to know about physics that makes it amazing:
There is so little actual material in the universe to mean it is made out of nothing.
22
posted on
01/10/2015 4:05:53 PM PST
by
cuban leaf
(The US will not survive the obama presidency. The world may not either.)
To: I want the USA back
Interesting. Since space is whats between objects, (space is not an object) its difficult to see how space can be bent.
Exactly. It can be bent only if it is made of what used to be called “The ether”. Which is two parts hydrogen and one part vanilla pudding.
23
posted on
01/10/2015 4:07:06 PM PST
by
cuban leaf
(The US will not survive the obama presidency. The world may not either.)
To: I want the USA back
Its the Gravity field that is bent by the mass of an object sitting in space-time. The same effect that hold our little rock in orbit around the Sun.
The bending of the space-time /Gravity field causes light to change direction, like canoe across a whirlpool, you think you've taken a straight line but in reality you've moved sideways.
24
posted on
01/10/2015 4:08:59 PM PST
by
moose07
(The Camels have reached the parking lot.)
To: outofsalt
Actually, I wish I hadn't thrown it away.
Did you get one of those Joe Louis-endorsed pieces of plastic that allowed a flick of the wrist to turn the LEDs on?
Or did you have to employ the Arthur Dent method of using the other hand?
To: moose07
The pair circle each other in just four hours - the second fastest such orbit ever seen - and the pulsar spins seven times per second, Those two suckers have it "hooked up" pretty good, cosmologically speaking :)
26
posted on
01/10/2015 4:16:04 PM PST
by
The Cajun
(Ted Cruz, Sarah Palin, Mark Levin, Mike Lee, Louie Gohmert....Nuff said.)
To: left that other site; 6SJ7; AdmSmith; AFPhys; Arkinsaw; allmost; aristotleman; autumnraine; ...
27
posted on
01/10/2015 4:17:50 PM PST
by
SunkenCiv
(Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
To: KevinDavis; annie laurie; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; Mmogamer; ...
Thanks left that other site.
28
posted on
01/10/2015 4:18:27 PM PST
by
SunkenCiv
(Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
To: The Cajun
They’re just making sweet music together, Dancing in the Moon light.
“And they tip toed ,through the tulips,...”
29
posted on
01/10/2015 4:20:27 PM PST
by
moose07
(The Camels have reached the parking lot.)
To: moose07
To: Snickering Hound
Totally
:)
31
posted on
01/10/2015 4:32:36 PM PST
by
moose07
(The Camels have reached the parking lot.)
To: moose07
Each is approximately 1.3 times heavier than our Sun, but they are only separated by about one solar diameter. That's the amazing thing to me.
That much mass moving at that speed, almost seems they would rip each other apart from gravitational fields alone.
Their surfaces have to be very physically warped and constantly changing.
32
posted on
01/10/2015 4:34:28 PM PST
by
The Cajun
(Ted Cruz, Sarah Palin, Mark Levin, Mike Lee, Louie Gohmert....Nuff said.)
To: moose07
Hmmm, a point on the pulsar’s equator travels then @ ...10mi diameter x pi x 7 rotations/sec * 3600 secs = 791,280 mph.
Compare to Earth’s 1000 mph, or the Moon’s paltry 10 mph.
To: Calvin Locke
Well, I’m sitting here posting in my robe, if that tells you anything...
34
posted on
01/10/2015 4:38:39 PM PST
by
outofsalt
( If history teaches us anything it's that history rarely teaches us anything.)
To: The Cajun
I would imagine that they are seriously entwined, possibly on the verge of becoming a single entity.
35
posted on
01/10/2015 4:39:27 PM PST
by
moose07
(The Camels have reached the parking lot.)
To: moose07
Have to wonder what would be the results of that merger.
The normal star blowing up, the neutron star gaining mass, a combination of both, etc.
36
posted on
01/10/2015 4:45:28 PM PST
by
The Cajun
(Ted Cruz, Sarah Palin, Mark Levin, Mike Lee, Louie Gohmert....Nuff said.)
To: Calvin Locke
It really hurts the mind,doesn't it.
Centrifugal force is trying to rip it apart and gravity is holding it together. Ouch.
37
posted on
01/10/2015 4:47:53 PM PST
by
moose07
(The Camels have reached the parking lot.)
To: The Cajun
The Pulsar will probably start gaining material conveyerbelt style from the other star, and slowly absorb it.
Possibly. :)
38
posted on
01/10/2015 4:53:17 PM PST
by
moose07
(The Camels have reached the parking lot.)
To: moose07; Darksheare
Darks will make the strongest coffee ever tasted using the pulsing energy of that star ...
39
posted on
01/10/2015 5:38:10 PM PST
by
MHGinTN
To: I want the USA back
Space is filled with the zero-point field of energy, so technically it is ‘something’.
40
posted on
01/10/2015 5:40:04 PM PST
by
MHGinTN
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