Jun 6, 2021 · Are astronomy and cosmology same? If not, what are the differences? And which one is greater in terms of subject area?

Sep 15, 2019 · I'm reading Harrison's "Cosmology: Science of the universe" because Harrison focuses on the distinction between cosmological redshift (he calls it expansion redshift) and the Doppler …

Feb 14, 2022 · Firstly, I think it's important to note that in general relativity there is only one redshift, and that a cosmological redshift can be interpreted as the result of infinitely many infinitesimal redshifts …

Oct 10, 2021 · I have covariance matrices and Markov chains coming from the SCP (Supernova Cosmology Project) and I would like to plot all these data in the particular diagram Omega_Lambda …

Jan 17, 2022 · 1 Davis and Lineweaver correctly point out some persistent mistakes in others' descriptions of FLRW cosmology, but they make errors of their own. One of those is the idea that …

Feb 6, 2024 · Modern cosmology is based on the Friedmann equations, for which the energy density of matter, $\Omega_m$, is a key parameter. $\Omega_m$ varies over time as the universe expands, …

We measure a star's relative velocity towards or away from us via its Doppler-shifted spectrum. This is also how we measure the distance of very distant stars: measuring the shifts in the spectrum ...

Dec 5, 2023 · This is where my question begins: are there any areas of astronomy that require knowledge of both engineering (design, prototyping, modeling and testing) and …

Mo, Bosch, & White discuss in Cha. 6 various statistical measures that can be used to probe the power spectrum, and write that some are better suited for normalizing the linear power spectrum than …

Jul 16, 2024 · Given some redshift z, how do we find the distance using the cosmological red shift formula (and presumably the Friedmann equations)? a = 1/(1+z), and we can assume that omega_0 …