61271

神经网络昆斯林的新闻组分类2006

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From: [e-mail] (Phil G. Fraering)
Subject: Re: Gamma Ray Bursters. Where are they? 
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Date: Tue, 27 Apr 1993 03:52:15 GMT
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[e-mail] writes:

>catalog.  These tests all  show, that the bursts have an isotropic
>distribution(evenly spread out in a radial direction), and they show signs of
>homogeneity, i.e. they do not clump in any one direction.  So, unless we are
>sampling the area inside the disk of the galaxy, we are sampling the UNIVERSE.
>Not cool, if you want to figure out what the hell caused these things.  Now, I
>suppose you are saying, "Well, we stil only may be sampling from inside the
>disk."  Well, not necessarily.  Remember, we have what is more or less an
>interplanetary network of burst detectors with a baseline that goes waaaay out
>to beyond Pluto(pioneer 11), so we should be able, with all of our detectors de
>tect some sort of difference in angle from satellite to satellite.  Here's an 
>analogy:  You see a plane overhead.  You measure the angle of the plane from
>the origin of your arbitrary coordinate system.  One of your friends a mile
>away sees the same plane, and measures the angle from the zero point of his
>arbitrary system, which is the same as yours.  The two angles are different,
>and you should be able to triangulate the position of your burst, and maybe
>find a source.  To my knowledge, no one has been able to do this.  

Uh, no. These burst detectors are just that, burst detectors.
They have no angular resolution.

Now a network of burst detectors could have angular resolution,
but we do not have a decent set of different networks at the distances
neccesary from each other to determine if they're happening in the oort
cloud or not.

We have one network, and trying to make two networks out of it
degrades what angular resolution we have.
--
Phil Fraering         |"Seems like every day we find out all sorts of stuff.
[e-mail]|Like how the ancient Mayans had televison." Repo Man