Modify Concept: Quasar microlensing in context of Exoplanet detection methods

[rpoleski]

Name the concept in question Quasar microlensing - 1318

Describe the change Quasar microlensing appears in 2 places in hierarchy:

1. Astrophysical processes -> Gravitation -> General relativity -> Gravitational lensing -> Gravitational microlensing -> Quasar microlensing
2. Exoplanet astronomy -> Exoplanet detection methods -> Gravitational microlensing -> Quasar microlensing

The first one is correct, but the second is misleading. We use gravitational microlensing for exoplanet detection, but not in quasars. Thus, I propose to remove "Quasar microlensing" from the second place in hierarchy (and keep untouched both the first Quasar microlensing and the Gravitational microlensing as Exoplanet detection method).

Please include any additional comments/feedback

None

[katieefrey]

Thanks for this feedback! I agree that this isn't exactly right, but it's not been easy to come up with the right solution. Is quasar microlensing properly a type of gravitational microlensing? or could they be siblings?

In the UAT, if a concept has a child, it must have that child everywhere it appears, so your exact suggestion as written isn't feasible.

something like this:

• Astrophysical processes -> Gravitation -> General relativity -> Gravitational lensing -> Gravitational microlensing

• Astrophysical processes -> Gravitation -> General relativity -> Gravitational lensing -> Quasar microlensing

• Exoplanet astronomy -> Exoplanet detection methods -> Gravitational microlensing

[rpoleski]

I think this is a good solution.

[rpoleski]

One more similar case:

Exoplanet astronomy -> Exoplanet detection methods -> Astrometry -> ...

and then follows a hierarchy of ~130 terms, which includes "Solar eclipses", "Standard candles", "Cepheid distance" etc. I propose to change it to:

Exoplanet astronomy -> Exoplanet detection methods -> Astrometric planet detection

and no deeper hierarchy.

[rpoleski]

Following my last comment, I think it should be considered to change:

Exoplanet astronomy -> Exoplanet detection methods -> Gravitational microlensing

to:

Exoplanet astronomy -> Exoplanet detection methods -> Gravitational microlensing planet detection

I note that soon I'll propose a longer list of terms related to "gravitational microlensing".

[katieefrey]

Since in your opening comment you said that quasar microlensing sense a child of gravitational microlensing, how about this...

Astrophysical processes -> Gravitation -> General relativity -> Gravitational lensing -> Gravitational microlensing -> Quasar microlensing Astrophysical processes -> Gravitation -> General relativity -> Gravitational lensing -> Gravitational microlensing -> Gravitational microlensing planet detection Exoplanet astronomy -> Exoplanet detection methods -> Gravitational microlensing planet detection

This gives them a parent/child relationships. Alternatively, "Gravitational microlensing" and "Gravitational microlensing planet detection" could only be linked as "related terms," but I think the parent/child would work.

[katieefrey]

Resolved in #310. Astrometric planet detection also added.