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In a recent thread, here in GA&C, turbo-1 posted this: if there was a massive black hole slinging around out there [beyond the EKB, but closer than Alpha Cen], how do you think we would have been able to detect it apart from some transient lensing effects?
If there were a (OOM) Msol BH somewhere in a MACHO or OGLE pieces of sky, what regions in parameter space (distance, space velocity, mass) would the null results (neither MACHO nor OGLE found any such BH) still allow such a ('nearby') BH to be lurking, undetected (by MACHO and OGLE)?
PS: If Gokul would like to make this into an Astronomy Q&A Game ...
[edit]: scratch that; while I would love to have PF members get more enthusiastic about the observational side of astronomy, I realize (today) this isn't a suitable topic for an Astronomy Q&A Game ...
If there were a (OOM) Msol BH somewhere in a MACHO or OGLE pieces of sky, what regions in parameter space (distance, space velocity, mass) would the null results (neither MACHO nor OGLE found any such BH) still allow such a ('nearby') BH to be lurking, undetected (by MACHO and OGLE)?
PS: If Gokul would like to make this into an Astronomy Q&A Game ...
[edit]: scratch that; while I would love to have PF members get more enthusiastic about the observational side of astronomy, I realize (today) this isn't a suitable topic for an Astronomy Q&A Game ...
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