Black Holes -- What methods to use to find them?

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Discussion Overview

The discussion revolves around methods for detecting black holes that do not have an accretion disk. Participants explore various techniques and express differing views on the expectations for the original poster's (OP) effort in formulating their question.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants suggest that black holes can be detected through the orbits of nearby stars.
  • Gravitational micro-lensing is proposed as another method for spotting black holes.
  • Detection of gravitational waves from orbiting black holes is mentioned as a potential method.
  • Sending in TARS or CASE is humorously suggested as a detection method, with some participants expressing surprise at this idea.
  • There is a discussion about the expectation for the OP to demonstrate prior effort in their inquiry, with differing opinions on whether this is necessary.

Areas of Agreement / Disagreement

Participants express differing views on the necessity for the OP to show effort before receiving answers. While some believe it is important, others feel the question is straightforward enough to warrant direct responses.

Contextual Notes

The discussion includes references to community norms regarding user engagement and expectations, which may vary among participants.

Who May Find This Useful

Readers interested in astrophysics, particularly in the detection of black holes and community engagement practices in online forums.

jha192001
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How many are the ways a Black hole without *ACCERTION DISK* can be spotted?
 
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How many ways have you thought of?
 
A couple other ways I can think of:

1. Orbits of stars nearby.
2. Gravitational micro-lensing.
3. Gravitational waves (if two black holes are orbiting each other).
4. Sending in TARS or CASE.
 
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Matterwave said:
A couple other ways I can think of:

1. Orbits of stars nearby.
2. Gravitational micro-lensing.
3. Gravitational waves (if two black holes are orbiting each other).
4. Sending in TARS or CASE.
So, we are no longer expecting the OP to do some work before we give answers? Did you think ibix was not aware of these?
 
phinds said:
So, we are no longer expecting the OP to do some work before we give answers? Did you think ibix was not aware of these?

Well, I thought sending in TARS or CASE was pretty clever... On a more serious note, I thought OP's question was simple enough that it didn't require the back and forth of asking OP to search elsewhere first. I generally leave the "please show effort" kind of responses to the Homework forum or for questions that are far too broad to answer concisely. If it's PF's current policy (I've been gone for a few years) that OP needs to show effort here as well, I can redact my post.
 
No need to redact now that the OP has seen it. But yes, a common theme lately has been to try to get (especially new) users used to showing their efforts when they ask questions.

Great to have you back, @Matterwave -- you have been missed! :smile:
 
Matterwave said:
4. Sending in TARS or CASE.
And I had to Google this one -- I learned something new! :smile:

upload_2018-9-28_10-23-30.png
 

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berkeman said:
No need to redact now that the OP has seen it. But yes, a common theme lately has been to try to get (especially new) users used to showing their efforts when they ask questions.

Great to have you back, @Matterwave -- you have been missed! :smile:

Ok, I will keep this in mind in the future. And, thanks! :D
 
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Matterwave said:
Ok, I will keep this in mind in the future. And, thanks! :D
Sorry, I didn't realize you had been away for a while. I though you were just forgetting the standards for a moment. o:)
 
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