Black hole - frequencies used for viewing

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SUMMARY

Space missions utilize specific frequencies, such as 43 GHz and 230 GHz, to observe black holes due to the unique emissions from these astronomical objects. Different frequencies penetrate various cosmic materials; for instance, visible light is obstructed by interstellar dust, while radio and infrared waves can pass through. The choice of these frequencies is likely influenced by the black hole's radiation characteristics and the limitations of other parts of the electromagnetic spectrum.

PREREQUISITES
  • Understanding of electromagnetic spectrum and its components
  • Familiarity with astronomical observation techniques
  • Knowledge of radio and infrared astronomy
  • Basic principles of black hole physics
NEXT STEPS
  • Research the properties of electromagnetic radiation emitted by black holes
  • Learn about radio astronomy techniques and instruments
  • Explore the impact of interstellar dust on astronomical observations
  • Study the differences between various frequency bands in astrophysics
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Astronomers, astrophysics students, and anyone interested in the techniques used for observing black holes and understanding the electromagnetic spectrum.

isha89
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Hey,

In space missions why do they choose different frequencies for viewing stars?

For example why do they choose both 43 GHz and 230 GHz to view a black hole?


Cheers!
 
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Different frequencies are emitted by different types of objects. They also can penetrate different things in space, such as visible light being blocked by dust while radio-infrared is able to penetrate it. I can't say why 43 ghz and 230 ghz is used to view certain black holes, but I assume it's either because much of rest of the spectrum is blocked or because the black hole emits radiation specifically at these frequencies.
 

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