Binary Black Holes Have Much Higher Masses Than Their White

question 23

Multiple Choice

Binary black holes have much higher masses than their white dwarf and neutron star counterparts,which should lead to a much stronger emission of gravitational waves.What is the most reasonable explanation for why we have not yet observed gravitational waves from black-hole binaries?

• A)Black hole binaries are very rare,and wave detection is difficult.
• B)The waves disappear into the black hole.
• C)The waves must be coming from very far away and haven't reached us yet.
• D)Our current theories must be wrong.

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Definitions:

Driveshaft

An assembly of one or more propeller shafts (hollow tubes) connected by universal joints (U-joints) to driven driveline components. In a typical tandem drive highway tractor, driveshafts are used to transmit torque from the transmission and forward differential carrier and between the two differential carriers.

Dynamically Balance

The process of balancing a rotating component while it is in motion to minimize vibrations and ensure smooth operation.

Transmission

A mechanical system in vehicles that transfers power from the engine to the drive axle, modulating engine output through various gear ratios.

Differential Carrier

The housing that contains the differential gearbox, supporting the ring gear and differential bearings.