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Do magnetars emit audible LW AM radio waves that can be heard on receivers?



 
 
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Old July 16th 07, 02:57 PM posted to sci.astro.amateur,sci.astro,alt.astronomy,rec.radio.amateur.space,uk.sci.astronomy
George Dishman[_1_]
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Default Do magnetars emit audible LW AM radio waves that can be heard on receivers?

On 16 Jul, 02:45, Radium wrote:
On Jul 15, 11:52 am, "George Dishman"
wrote:

http://en.wikipedia.org/wiki/Heliosphere


Both the material within the region and the ISM are almost
entirely ionised so are in a form known as "plasma", a
soup of charged particles. One of the feautures of plasma
is that is absorbs low frequency signals below what is
called the "plasma cutoff frequency". Basically below
the VHF band, space becomes increasingly opaque and signals
from stars don't reach us.


Okay so it seems like a no win-situation here. Too low and plasmas
will cut it off. Too high and you lose strength really fast.

http://www.terabeam.com/support/calc...space-loss.php

From the above link, it seems that a higher-frequency radio wave would
lose its strength faster than a lower-frequency radio wave of the same
original strength would.


That link is only relevant for a fixed size antenna. See
my other post on the waterhole and the 408 MHz band.

George

 




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