The Gamma Ray Burst (GRB) picked up by MAGIC

Joined: 1 Oct 05
Posts: 9
Credit: 59202
RAC: 0
Topic 189986

Hello,

I've recently read a quite interesting article about a gammy ray burst that the gamma ray telescope MAGIC in spain picked up. The original article was in German, but here is a link to the event published by CERN:
http://www.cerncourier.com/main/article/45/8/1

Well, my problem with it that the original article described the telescope quite alright but did not say much more about the event than saying "It was damn bright!"
The latter article has the problem that I don't quite understand all of it.

Yesterday I saw some images in a newspaper with a description saying that the emission of gamma ray bursts was created by a neutron star colliding with another or a neutron star being absorped by a black hole... now I am trying to find something over the internet that describes that a little in detail. With little success so far. (Googled for "GRB MAGIC" and "gamma ray neutron star")

Well my questions are:
How could a a neutron star falling emit such an extreme amount of energy as desribed in the articles, well beyond quasars, when falling into a black hole? I mean, as soon it passes its event horizon is it over... it could generate much energy at the edge of the event horizon, much like this theory of virtual particles that partly fall inside partly escap, but why would it?
Or does the sudden shift in mass and energy (the kinetic energy of the neutron star I guess) make the black hole be temporaryly unstable expand inside the event horizon and thus make the latter fall back, so it temporarily lights up again?

And if it was two neutron stars? Shouldn't that be quite easisly observable then?

Greeting
Rabenschwinge

Joined: 1 Oct 05
Posts: 9
Credit: 59202
RAC: 0
MarkF
MarkF
Joined: 12 Apr 05
Posts: 393
Credit: 1516715
RAC: 0

sorry somehow double posted.

sorry somehow double posted.

MarkF
MarkF
Joined: 12 Apr 05
Posts: 393
Credit: 1516715
RAC: 0

This previous post may

This previous post may help.
here

The neutron star is disrupted by the tidal force of the black hole. The remnants emit the gamma rays while colliding with each other as they accelerate inward.

klasm
klasm
Joined: 20 Feb 05
Posts: 32
Credit: 5580
RAC: 0

The are two main types of

The are two main types of gamma ray bursters, short and long. The short burst are thought to come from mergers of neutron stars-black holes.

The long burts have less energy and there is by now quite good evidence that they come from extremely powerful supernovae, sometimes called hypernovae. This type of nova can either create a black hole, like supernovae, or be so violent that they blow the star completely and do not leave anything but an expading cloud of matter and radiation.

Swift has is also joined by the ESA/NASA/Russia satelite INTEGRAL

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.