Discussion Overview
The discussion centers on the emission of gravitational waves by celestial bodies, specifically comparing neutron stars to the Earth and the Moon. Participants explore the conditions under which gravitational waves are produced and the implications of these emissions for different astronomical systems.
Discussion Character
- Exploratory
- Technical explanation
- Conceptual clarification
- Debate/contested
Main Points Raised
- Some participants question why neutron stars emit gravitational waves while other objects in orbit, like the Earth and Moon, do not seem to do so at a measurable rate.
- One participant notes that according to General Relativity (GR), other objects do emit gravitational waves, but the energy loss is significantly smaller, making it difficult to measure.
- Another participant claims that the Earth does emit gravitational waves, but the effects are too weak to be noticeable over long periods.
- There is a discussion about the difference between gravitational wave emission and tidal interactions, with one participant clarifying that the Moon's movement away from the Earth is due to tidal forces, not gravitational wave emission.
- Some participants suggest that while our bodies are theoretically experiencing gravitational waves from various sources, other larger forces would overshadow any potential contortion caused by these waves.
- A later reply mentions that orbital decay due to gravitational wave emission has been observed in closely orbiting white dwarf binaries, providing an example of another system where gravitational waves are relevant.
Areas of Agreement / Disagreement
Participants express a mix of agreement and uncertainty regarding the emission of gravitational waves by different celestial bodies. While some acknowledge that gravitational waves are emitted by various objects, the extent and detectability of these emissions remain contested.
Contextual Notes
Participants highlight limitations in measuring gravitational wave emissions from less massive bodies like the Earth and Moon, as well as the dependence on specific conditions for the detection of these waves.
