Redshift and blueshift describe the change in the frequency of a light wave depending on whether an object is moving towards or away from us.
Noun1.redshift- (astronomy) a shift in the spectra of very distant galaxies toward longer wavelengths (toward the red end of the spectrum); generally interpreted as evidence that the universe is expanding red shift astronomy,uranology- the branch of physics that studies celestial bodies and the...
Redshift and blueshift When the observed wavelength is smaller than emitted, the zz parameter is negative (z<0)(z<0), and the blueshift phenomenon occurs. In this case, the spectral lines are shifted towards shorter wavelengths (blue light has the shortest wavelength, approximately 450 nm). ...
Forum: Astronomy and Astrophysics S I Is there an equivalent "redshift" for cosmic rays due to expansion? I've found this discussion (https://astronomy.stackexchange.com/questions/43525/is-there-an-equivalent-of-the-red-shift-effect-for-cosmic-rays) where it is said that there is an equi...
Although the redshifts of galaxies are often interpreted as being caused by the relativistic Doppler effect alone, both the expansion and the gravitational field of the Universe are involved. See also cosmological redshift. Collins Dictionary of Astronomy © Market House Books Ltd, 2006 redshift[...
xA quasars show extreme properties in terms of C IVλ1549 equivalent width and blueshift amplitudes. C IVλ1549 shows low equivalent width, with a median value of 15 Å (≲30 Å for the most sources), and high or extreme blueshift amplitudes (–5000 ≲ c(1/2) ≲ –1000 ...
such as the Andromeda Galaxy (also known as Messier 31, M31, or NGC 224) it would take several hundred years before we could detect a change in the blueshift. And this still won't answer your question, since the shift in spectral lines of Andromeda have nothing to do with cosmological ...
iv blueshift, even when the dependence of both quantities on quasar luminosity has been taken into account. A strong anticorrelation between the [O?iii] equivalent width (EW) and C?iv blueshift also exists. Furthermore, [O?iii] is very weak, with EW 44.7 erg s?1, which is ?0.15?per...
Noun1.redshift- (astronomy) a shift in the spectra of very distant galaxies toward longer wavelengths (toward the red end of the spectrum); generally interpreted as evidence that the universe is expanding red shift astronomy,uranology- the branch of physics that studies celestial bodies and the...
By virtue of Equation (4), a blueshift of 𝜈0ν0 according to the 𝜈ν-z relation 𝜈∗0(𝑧)=𝑓(𝑧)𝜈0ν0*(z)=f(z)ν0 (5) then yields the T-z relation 𝑇(𝑧)=𝑓(𝑧)𝜈0𝑥0=𝑓(𝑧)𝑇(𝑧=0).T(z)=f(z)ν0x0=f(z)T(z=0). (6) ...