I am just "trying" to watch interstellar TV...(adsbygoogle = window.adsbygoogle || []).push({});

The detection range in lightyears is

[tex]R = \sqrt{\frac{\text{EIRP}\cdot A_{e}_{r}\cdot\text{twc}}{4\pi\cdot\text{SNR}\cdot B_{r}\cdot k_{B}\cdot T_{sys}}}\cdot\frac{1\,\text{ly}}{9454254955488000\,\text{m}}[/tex], where

[tex]\text{EIRP} = P_{t}G_{t},[/tex]

[tex]\text{twc} = \sqrt{B_{r}t} = 1\,\text{for modulated signals,}[/tex]

[tex]\text{SNR}[/tex] is signal-to-noise ratio,

[tex]A_{e}_{r}[/tex] is receiver's radio telescope's effective area,

[tex]B_{r}[/tex] is receiver's bandwidth which is larger or equal to transmitters bandwidth,

[tex]k_{B}[/tex] is Boltzmann's constant and

[tex]T_{sys}[/tex] is system's temperature in Kelvins.

I put these numbers in:

[tex]\text{EIRP} = 15000\,\text{W}[/tex],

[tex]A_{e}_{r} = 15707963\,\text{m}^{2}[/tex],

[tex]\text{twc} = 1[/tex],

[tex]\text{SNR} = 22[/tex],

[tex]B_{r} = 8\cdot 10^{6}\,\text{Hz}[/tex],

[tex]k_{b} = 1.3806504\cdot 10^{-23}\,\text{J/K}[/tex], and

[tex]T_{sys} = 10\,\text{K}[/tex].

I get: [tex]R = 0.000093\,\text{ly}.[/tex]

Questions:

1. Is the equation correct?

2. Is my answer about correct?

3. How to reduce the SNR?

4. How to reduce the system temperature?

5. Can I really rise the detection range just only reducing the system temperature? So technically I can watch interstellar TV shows with a very, very small disc, if I can go to very near the absolute zero?

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# Cyclops Array

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