Gamma radiation bursts......

Guys, I wish discuss and hopefully learn somethin more abt gamma
radiations so thats one reason of starting this topic.

Gamma burst which were detected in enormous amts by radio telescopes
backin 1991 were discovered to be belonging to Star nursuries at the
edge of the Universe. Nursuries wher stars are made and bec of their
enormous size they burn their fuel very very quickly which results in
a supernovae, which i n turns result in the assumed creation of a
black hole that throws out a constant focused beam of gamma
radiiation..

Now at first if we consider that this radiation is wide spread and not
focused as it was detected all over the sky and not just the
galactical plane. It was very easily violating the E=mc square of
Einstien. But if we assume that it is a focused beam that throws out
radiation in one direction only and not all around itself, it does
stay within limits of e = mc aquare.

Recently I also came to know that some scientist now think that the
previous assumptions of galaxy formation in early Universe was due to
dust of clouds coming together to form matter is wrong, now it is
assumed that it formed a black hole first, since every galaxy we find
today has a galactic centre with a black hole. SO may be this gamma
radiation and early universe galaxy formation is related the after
images of these billion year old gamma raditions may wwell be the
formation of those first few galaxies. Where black holes were formed
first and then the remaining galaxy was formed.

cheers guys, comments



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Mustufa wrote:

Gamma burst which were detected in enormous amts by radio telescopes
backin 1991

Gamma ray bursts are not detected by radio telescopes. They
are detected by gamma ray detectors in space, and subsequently
observed (if we are lucky and can localize them) at other wavelengths.

[ rest of incoherent post deleted ]

Paul

lid (Mustufa) wrote in message ...
Guys, I wish discuss and hopefully learn somethin more abt gamma
radiations so thats one reason of starting this topic.

Gamma burst which were detected in enormous amts by radio telescopes
backin 1991 were discovered to be belonging to Star nursuries at the
edge of the Universe. Nursuries wher stars are made and bec of their
enormous size they burn their fuel very very quickly which results in
a supernovae, which i n turns result in the assumed creation of a
black hole that throws out a constant focused beam of gamma
radiiation..

Ummm, no. The gamma ray bursts do not come from the black hole.
They come from "hypernovae" which are supernovae but for much
more massive stars. It was thought that a supernova of a star
beyond a certain mass limit (14 Solar masses, I think but I
just pulled that out of my a--, uhhh, memory) would not
actually be a supernova as a black hole would be created and
the collapsing star would simply fall into the black hole and
get swallowed up. As it turns out, in some cases under certain
circumstances a supernova of such a super massive star can
occur. The result is a release of a tremendous amount of
energy, some of which gets focused into "beams" along the spin
axis of the collapsing star. These beams are bright enough to
be seen across the universe and are most likely the source of
most gamma ray bursts.

Note that these do not merely occur at the edges of the visible
Universe back in the early ages after the big bang but occur
everywhere and even up to the present. Some gamma ray bursts
have been detected only a few million light years away, for
example.

"Paul F. Dietz" wrote in message
...
Mustufa wrote:

Gamma burst which were detected in enormous amts by radio telescopes
backin 1991

Gamma ray bursts are not detected by radio telescopes. They
are detected by gamma ray detectors in space, and subsequently
observed (if we are lucky and can localize them) at other wavelengths.

[ rest of incoherent post deleted ]

Paul, maybe you should go back to Mustafa's post and read it again from a
more... polite viewpoint considering he is obviously not using English as a
first language.

--
Alan Erskine
We can get people to the Moon in five years,
not the fifteen GWB proposes.
Give NASA a real challenge

"Paul F. Dietz" wrote

Gamma ray bursts are not detected by radio telescopes. They
are detected by gamma ray detectors in space,

Initially by the Vela high-altitude nuclear-explosion-detection
satellites:
http://antwrp.gsfc.nasa.gov/htmltest...w/grbhist.html

Which is a hook that allows me to point out a somewhat impressive
feat of observation and orbital mechanation. A Vela seems
to have been recovered and identified by amateur observers almost
thirty four years after the last official orbital elements were
published:

http://satobs.org/seesat/Apr-2004/0285.html