Pulsar
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En pulsar er en roterende neutronstjerne, som udsender radiostrålingspulser.
Et par pulsarers spirallering mod hinanden (se rumtidsillustration) er blevet observeret og de passer meget nøjagtig med Einsteins ligningers forudsigelser (indenfor 99,95%).[1]
[redigér] Kilder/referencer
- ↑ Sept. 13, Sciencedaily: Einstein was at least 99.95 percent right Citat: "...the double pulsar system should lose energy, causing the two neutron stars to spiral in towards each other by precisely the amount that we have observed -- thus our observations give an indirect proof of the existence of gravitational waves (as predicted by Einstein)..."
Universet
[redigér] Eksterne henvisninger
Commons har billeder og/eller lyd med forbindelse til: |
- 6 billeder fra NASA/CXC/HST/ASU af en pulsar (centrum). De blå billeder er fra Chandra (røntgenstråler) og de røde fra Hubble (synligt lys).
- NASA, Imagine the Universe! Dictionary: pulsar
- Neutron Stars and Pulsars - Introduction
- Google: Neutron Stars
- 2003-12-04, Science Daily: Pulsar Find Boosts Hope For Gravity-wave Hunters Citat: "..."Under the most favourable distribution model, we can say at the 95% confidence level that this first generation of gravitational wave detectors could register a neutron star merger every one to two years," said Dr Vicky Kalogera..."
- Stanford, Dr. Sten Odenwald, Special & General Relativity Questions and Answers: