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Gamma Ray Burst seen with Gravity Wave detection!



 
 
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  #1  
Old February 16th 16, 04:24 PM posted to sci.physics,sci.astro
Yousuf Khan[_2_]
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Posts: 1,692
Default Gamma Ray Burst seen with Gravity Wave detection!

The recent discovery of gravitational waves from the site of a merger of
two stellar mass black holes, may have been accompanied by a Gamma Ray
Burst event too! Why is this even news? Because the theory of black hole
mergers suggests that no form of light should be emitted, only energy in
the form of gravitational waves. If two neutron stars had merged into a
black hole, then sure, no problem there should be light emission, but
not from black holes. So possible new physics found?

Yousuf Khan

[1602.03920] Fermi GBM Observations of LIGO Gravitational Wave event
GW150914
http://arxiv.org/abs/1602.03920
  #2  
Old February 16th 16, 05:06 PM posted to sci.physics,sci.astro
Sergio
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Posts: 37
Default Gamma Ray Burst seen with Gravity Wave detection!

On 2/16/2016 9:24 AM, Yousuf Khan wrote:
The recent discovery of gravitational waves from the site of a merger of
two stellar mass black holes, may have been accompanied by a Gamma Ray
Burst event too! Why is this even news? Because the theory of black hole
mergers suggests that no form of light should be emitted, only energy in
the form of gravitational waves. If two neutron stars had merged into a
black hole, then sure, no problem there should be light emission, but
not from black holes. So possible new physics found?

Yousuf Khan

[1602.03920] Fermi GBM Observations of LIGO Gravitational Wave event
GW150914
http://arxiv.org/abs/1602.03



I would think that the collison is very complex, and much energy is
emitted across the EM spectrum, and particals ejected too.

and the warping of space would have strongly effected other close bodies.

all within less than a second, as these two merged.

where is the detailed simulation ?

  #3  
Old February 16th 16, 05:20 PM posted to sci.physics,sci.astro
Martin Brown
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Posts: 1,707
Default Gamma Ray Burst seen with Gravity Wave detection!

On 16/02/2016 15:24, Yousuf Khan wrote:
The recent discovery of gravitational waves from the site of a merger of
two stellar mass black holes, may have been accompanied by a Gamma Ray
Burst event too! Why is this even news? Because the theory of black hole
mergers suggests that no form of light should be emitted, only energy in
the form of gravitational waves. If two neutron stars had merged into a
black hole, then sure, no problem there should be light emission, but
not from black holes. So possible new physics found?


Not necessarily new physics. The black holes were not sat in a perfect
vacuum and may still have had tenuous accretion disks or other material
in their respective equatorial planes some of which becomes up for grabs
when they merge. It would be surprising if the merger of BH ergospheres
did not provide some mechanism for pumping a fair amount of power out
along the polar axes of the newly formed object.

https://en.wikipedia.org/wiki/Ergosphere

http://www.caltech.edu/news/unusual-...e-merger-45188

Including but not limited to electromagnetic radiation and particle
creation. It is only the interior of the BH that is forbidden territory
- outside it is a region where things can still interact.

That might be the way to find it...comparing old surveys with new ones
and looking for something faint but with a new flat spectral index.

--
Regards,
Martin Brown
  #4  
Old February 16th 16, 05:23 PM posted to sci.physics,sci.astro
Sam Wormley[_2_]
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Default Gamma Ray Burst seen with Gravity Wave detection!

On 2/16/16 9:24 AM, Yousuf Khan wrote:
The recent discovery of gravitational waves from the site of a merger of
two stellar mass black holes, may have been accompanied by a Gamma Ray
Burst event too! Why is this even news? Because the theory of black hole
mergers suggests that no form of light should be emitted, only energy in
the form of gravitational waves. If two neutron stars had merged into a
black hole, then sure, no problem there should be light emission, but
not from black holes. So possible new physics found?

Yousuf Khan

[1602.03920] Fermi GBM Observations of LIGO Gravitational Wave event
GW150914
http://arxiv.org/abs/1602.03920



It's hard for me to imagine that two black holes colliding didn't
affect nearby gas and debris, that could generate a burst of gamma
radiation.



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sci.physics is an unmoderated newsgroup dedicated
to the discussion of physics, news from the physics
community, and physics-related social issues.

  #5  
Old February 17th 16, 11:08 PM posted to sci.physics,sci.astro
Yousuf Khan[_2_]
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Posts: 1,692
Default Gamma Ray Burst seen with Gravity Wave detection!

On 16/02/2016 11:20 AM, Martin Brown wrote:
Not necessarily new physics. The black holes were not sat in a perfect
vacuum and may still have had tenuous accretion disks or other material
in their respective equatorial planes some of which becomes up for grabs
when they merge. It would be surprising if the merger of BH ergospheres
did not provide some mechanism for pumping a fair amount of power out
along the polar axes of the newly formed object.


True, but let's face it, the accretion disks may have already been
around even before the two BH's merged, and they'd be radiating around
each individual progenitor BH's. Also it's entirely likely that all of
the gas between the black holes were kicked out as the two of them
neared each other.

Including but not limited to electromagnetic radiation and particle
creation. It is only the interior of the BH that is forbidden territory
- outside it is a region where things can still interact.

That might be the way to find it...comparing old surveys with new ones
and looking for something faint but with a new flat spectral index.


I have feeling that the gravity waves might have excited the quantum
vacuum energy field nearby which might have spurred the creation of real
photons.

Yousuf Khan

 




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