Krahasoni metodat

	Paralaksa (Astrometri)	Array i sinjalizimit të pulsareve
Fusha	Astronomi	Astronomi
Familja	Process / pipeline	Process / pipeline
Viti i origjinës	1838	1979
Krijuesi	Friedrich Wilhelm Bessel	Stephen Detweiler
Lloji	Astrometric distance measurement	Observational timing method
Burimi themelues	ESA (1997). The Hipparcos and Tycho Catalogues. Astrometric and photometric star catalogue. European Space Agency Technical Reports, SP-1200.	Sazhin, M. V. (1978). Opportunities for detecting ultralong gravitational waves. Soviet Astronomy, 22, 36-38.
Emërtime të tjera	Stellar Parallax, Trigonometric Parallax, Parallax Distance Method	PTA, Millisecond Pulsar Timing, Pulsar Timing Residuals
Të lidhura	3	3
Përmbledhja	Astrometric parallax is the foundational geometric method for measuring distances to nearby stars, based on observing the apparent shift in a star's position as Earth orbits the Sun. First successfully demonstrated by Friedrich Wilhelm Bessel in 1838 for the star 61 Cygni, parallax remains the most direct and reliable distance measurement in astronomy, anchoring the entire cosmic distance ladder.	A pulsar timing array uses multiple millisecond pulsars as a distributed network of gravitational wave detectors across the galaxy. Proposed theoretically by Stephen Detweiler in 1979, this method exploits the extraordinary timing precision of pulsars to detect the subtle spacetime distortions caused by gravitational waves. In 2023, the first evidence for a stochastic background of gravitational waves was announced using pulsar timing arrays.