Redshift applies to the spectrum of light from galaxies that are moving away from us; that is, their light is shifted toward the red end of the spectrum. Sources Cool Cosmos, coolcosmos.ipac.caltech.edu/cosmic_classroom/cosmic_reference/redshift.html. “The Discovery of the Expanding Universe...
However, thetime available for the growth of galaxies is shorter than theentire age of the universe at the corresponding redshift.Turner (1991) recognized that exceptionally bright,high–redshift quasars may yield interesting constraints oncosmic structure formation. Motivated by the recent dis-covery...
We conclude by demonstrating how a direct determination of the cosmological constant is possible using redshift drift data.doi:10.1088/1475-7516/2014/02/009Hertzog L. BesterJulien LarenaPeet J. van der WaltNigel T. BishoparXivJournal of Cosmology and Astroparticle Physics...
If the the short-run labor supply schedule is inelastic to the wage, then 7J measures the elasticity of the labor-demand schedule. The rate of shift ... RD Lee - 《Easterlin Ra Ed》 被引量: 81发表: 1980年 A robust sample of galaxies at redshifts 6.0: stellar populations, star format...
(extreme mass ratio)的黑洞双星系统以外, 还有能够产生随机背景引力波的双白矮星系统、原初黑洞(primordial black hole)以及宇宙一阶相变(cosmic first-order phase transition)所产生的真空泡泡(vacuum bubbles); 脉冲星计时阵列所探测的极低频引力波则来自于超大质量的双黑洞系统; 最后还有存在于全频段的宇宙原初引力...
The object is far outside our galactic neighborhood, possibly billions of light-years away. But astronomers have seen similar objects closer to home.
Gravitational redshift Theelectromagnetic radiationof an object is stretched out slightlyinside a gravitational field. Think of the sound waves that emanate from a siren on an emergency vehicle; as the vehicle moves toward an observer, sound waves are compressed, but as it moves away, they are ...
The observable universe can be thought of asa spherethat extends outwards from any observation point for 46.5 billion light-years, going farther back in time and more redshifted the more distant away one looks. Is the universe shaped like a cone?
(extreme mass ratio)的黑洞双星系统以外, 还有能够产生随机背景引力波的双白矮星系统、原初黑洞(primordial black hole)以及宇宙一阶相变(cosmic first-order phase transition)所产生的真空泡泡(vacuum bubbles); 脉冲星计时阵列所探测的极低频引力波则来自于超大质量的双黑洞系统; 最后还有存在于全频段的宇宙原初引力...
The expansion of the Universe leads to the light we see from an object today being 'redshifted' by comparison to when it was emitted. Redshift is a shift in the wavelengths of the spectrum of light. Now, imagine looking at just one area in the sky. If we look with a good enough ...