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2 days ago · Algebraic Observational Cosmology. Jonah Kudler-Flam, Samuel Leutheusser, Gautam Satishchandran. What can be measured by an observer in our universe? We address this question by constructing an algebra of gravitationally-dressed observables accessible to a comoving observer in FLRW spacetimes that are asymptotically de Sitter in the past ...
2 days ago · This leads us to the natural assumption that compact objects might contain DM too. Among the compact objects exist in galaxies, neutron stars are considered as natural laboratories, where theories can be tested, and observational data can be received. Thus, many models of DM have proposed its presence in those stars.
3 days ago · The vastness of the universe has always captivated human curiosity, inspiring countless theories and observations. Among these, the Cosmological Principle stands as a cornerstone of modern cosmology, providing a framework for understanding the large-scale structure and evolution of our cosmic abode.
1 day ago · Hubble's law, also known as the Hubble–Lemaître law, is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance. In other words, the farther they are, the faster they are moving away from Earth.
21 hours ago · The article likely explains how cosmology and astronomy differ in their approaches to studying dark matter. Cosmology examines the large-scale properties and effects of dark matter on the universe as a whole, while astronomy focuses on the observational aspects and characteristics of dark matter in specific regions of space.
2 days ago · Cosmologist Niayesh Afshordi is a senior author on a new research paper, published in the Journal of Cosmology and Astroparticle Physics, that describes this “cosmic glitch” model as an ...
