Assertion: pulsar | /r/HasProperty | discovered
Facets:
Source sentences:
text: As more pulsars were discovered, the letter code became unwieldy, and so the convention then arose of using the letters PSR (Pulsating Source of Radio) followed by the pulsar's right ascension and degrees of declination (e.g. PSR 0531+21) and sometimes declination to a tenth of a degree (e.g. PSR 1913+16.7).
text: In order for the effects of general relativity to be measurable with current instruments, pulsars with orbital periods less than about 10 years would need to be discovered; such pulsars would orbit at distances inside 0.01 pc from Sgr A*. Searches are currently underway; at present, five pulsars are known to lie within 100 pc from Sgr A*.
text: The first pulsar to be discovered was PSR J1921+2153 in the constellation of Vulpecula.
text: The multibeam receiver was also used in the Parkes High Latitude survey that found, in 2003, PSR J0737-3039A, the most relativistic pulsar to date and the first pulsar to be discovered orbiting another detectable pulsar (PSR J0737-3039B).
text: Then, in 1968, the star was found to be emitting its radiation in rapid pulses, becoming one of the first pulsars to be discovered.
text: While astronomers had been pessimistic about ever been able to observe neutron stars after Baade & Zwicky's predictions before pulsars were actually discovered, advances in technologies have also allowed direct observations today: a neutron star is slowly cooling down with a typical surface temperature of about a million Kelvin.
text: Analogously, when the first pulsar was discovered, it was thought that the fast, regular pulses could possibly originate from a distant civilization, and
text: Other pulsars have been discovered not inside of supernova remnants, but close to them.
text: Even though pulsars were first discovered as radio sources they have now been observed using optical, X-ray and gamma-ray telescopes.
text: The real explanation is that a pulsar, a rotating neutron star, was discovered.
text: Some of the pulsars that were discovered appear to switch off their radio emission for some minutes or hours.
text: When pulsars were first discovered, they were believed by some to be evidence of extra-terrestrial intelligences.
text: As more pulsars were discovered, the letter code became unwieldy and so the convention was then superseded by the letters PSR (Pulsating Source of Radio) followed by the pulsar's right ascension and degrees of declination (e.g. PSR 0531+21) and sometimes declination to a tenth of a degree (e.g. PSR 1913+167).
text: In order for the effects of general relativity to be measurable with current instruments, pulsars with orbital periods less than about 10 years would need to be discovered; such pulsars would orbit at distances inside 0.01 pc from Sgr A*. Searches are currently underway; at present, five pulsars are known to lie within 100 pc from Sgr A*.