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Old 04-August-2004, 12:04 AM
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bigbluestar bigbluestar is offline
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I have a question. I have moved my interest into gamma ray burst (GRB's) and there after glow. Now It appears that they have been so far detected outside of our galaxy. first question has one been detected in our galaxy. Quite frankly with my very basic knowledge of this event is no. The energy been release from these things are retarded here is a quote I got from one site states that the energy released is equivilent of 1000 G type stars in main sequence like our sun burining ther entire mass/energy off under 1 second.

If you are like me and have some idea of the magnitude of what that was about your response should be that crazy.

I have many questions actually that don't have answers but I wanna through them around because discussion is a great tool of humanity.

Since no-one know what causes these things I wanna start my first question with

1) does anyone know of a source of that much potential energy waiting to go Kenetic.

2) Do we have such a source in our galaxy. IF so were is it. If it already went gamma (I just made that term up its no good in the real world ^^). Is there any residue.

3) What happens to the environment in proximity to this GRB

4) Has one gone off in a galaxy close enough that the powerfull seeing eye of hubble or changdra can get a look at it. If so please specify j2000 position or galactic common name for because I have access to all of hubble, and chandra's ccd's and would like to take a look

Any way fire any info you have about GRB's I am starting to get really fasicnated in this fenom thank you all in advance h34r:
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Old 05-August-2004, 10:31 PM
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Please anyone its just a discussion not definitive answers I'm looking for..... I know there are geniuses in here. Just suggestions thats all it does not have to be absolute
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Old 06-August-2004, 12:14 AM
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Hi BigBlueStar,

There is more information about GRBs than you seem to be aware of.
Some [or all] of them are certainly large supernova explosions. They appear as a GRB if we are looking straight down the rotational axis of the core of the star.

There has recently been a nebula observed that seems to be the remnant of a GRB explosion in our galaxy [from a few thousand years ago], but it was not aimed at us thankfully, because it would have fried us.

These objects give off about 10^53 ergs over a period of a few seconds. This is about 3x10^19 times as much energy as the Sun gives off in a second. It is also 10^12 times the energy the Sun gives off in a year, which means it is about the same energy that 100 G2 stars give off in their entire lifetimes [10^10 years].

What can release this much energy is the heat of about 10 or 20 times the mass of the sun suddenly falling into a tiny new black hole, and all of the protons [and other particles] slamming into each other at nearly the speed of light on the way down, and the energy of these collisions being funneled out through the intense magnetic poles of the black hole.
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Old 11-August-2004, 12:25 AM
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I'm actually doing some work on some of the BATSE data, and one of the most interesting things I'm noticing is the variety that GRBs come in. Now, I'm not sure if all I'm seeing are GRBs or not, since that link above suggests there are many that aren't. But as I'm analyzing some of the data, many were skipped, but some also seem to be equipment malfunctions.

But based on what I have analyzed, a good many of them don't even have much of an afterglow. There are some spikes for less than half a second at 1-2 kilocounts per second, counting gamma-ray photons. But there are some fairly impressive ones, too. I can't recall all of the details, since I'm not at the computer on which I work on them. But many, also, have afterglows and are quite a lot of fun to work with (relatively speaking).

The college I'm working with has just set up a GRB telescope in the Virgin Islands. I don't recall all the details, but the link below should provide you with some information about the 'scope and the universities who are collaborating to put it together: http://astro.uvi.edu/ .

Oh, here is a another link to NASA's site on GRBs:
http://imagine.gsfc.nasa.gov/docs/science/..._l1/bursts.html

Hope this helps.
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