What is the best frequency for detecting audible AM radio signals from magnetars?

On Jul 15, 11:52 am, "George Dishman" wrote
in http://groups.google.com/group/sci.a...2a2a514?hl=en&
:

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.

Then what is the best frequency for detecting audible AM radio signals
from magnetars?

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.

At the start of the transmission, both the higher and lower
frequencies maybe at the same power [watts-per-meter-squared].
However, the higher frequency will lose its strength -- and likely
dissipate into the noise floor -- quicker than the lower-frequency.
Hence, reception of higher-frequencies requires that the transmitter
and receiver be closer together.

In rec.radio.amateur.space Radium wrote:
On Jul 15, 11:52 am, "George Dishman" wrote
in http://groups.google.com/group/sci.a...2a2a514?hl=en&
:

snip

Then what is the best frequency for detecting audible AM radio signals
from magnetars?

Radio astronomy

http://www.nrao.edu/whatisra/
http://www2.jpl.nasa.gov/radioastronomy/
http://www.haystack.mit.edu/edu/unde..._tutorial.html

What it sounds like:

http://www.radio-astronomy.net/

Amateur radio astronomy

http://www.nitehawk.com/rasmit/
http://www.signalone.com/radioastronomy/telescope/
http://www.radiosky.com/

snip remaining crap

--
Jim Pennino

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