Flux Limited Sample: What Is It & Why Use It?

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In summary, a flux limited sample is a sample of objects or data that have been limited to a certain range of flux, or brightness. This is used in scientific research to reduce bias and improve statistical significance. It is created by setting a specific flux threshold and only including objects or data above this threshold. The benefits of using a flux limited sample include studying a more representative sample and controlling for variables, while limitations include excluding important data and the potential for biased results.
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venkatpunjabi
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I have read it in many papers that this is a flux limited sample. But I have trouble in understanding what is the exact meaning of it and why do we use flux limited samples?
 
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hi there
welcome to PF :smile:

typing Flux limited sample into google came up with many links
go have a try

regards
Dave
 
  • #3
I am fairly certain that it is exactly what it sounds like, a sample that has limits established on the bounds of the flux.
 

1. What is a flux limited sample?

A flux limited sample is a sample of objects or data that have been limited to a certain range of flux, or brightness. This means that only objects or data above a certain level of brightness are included in the sample, while fainter objects are excluded.

2. Why is a flux limited sample used in scientific research?

A flux limited sample is used to reduce bias and improve the statistical significance of results. By limiting the sample to a certain range of flux, researchers can ensure that they are studying a more representative sample of objects or data, rather than just the brightest or most easily observed ones.

3. How is a flux limited sample created?

A flux limited sample is created by setting a specific flux threshold and only including objects or data that meet or exceed this threshold. This could be done manually by selecting objects or data above the threshold, or through automated processes using computer algorithms.

4. What are the benefits of using a flux limited sample?

Using a flux limited sample allows researchers to study a more homogenous group of objects or data, making it easier to draw conclusions and make comparisons. It also helps to control for variables such as distance and luminosity, which can affect the observed flux of an object.

5. Are there any limitations to using a flux limited sample?

One limitation of using a flux limited sample is that it may exclude important data or objects that fall below the flux threshold. This could lead to biased results if these objects are significant in the overall population. Additionally, the chosen flux threshold may also affect the results and conclusions drawn from the sample.

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