The expansion of the Universe
About:
This article is published in Monthly Notices of the Royal Astronomical Society.The article was published on 1978-10-01 and is currently open access. It has received 109 citations till now. The article focuses on the topics: Big Rip & Metric expansion of space.read more
Citations
More filters
Journal ArticleDOI
Physical acceptability of isolated, static, spherically symmetric, perfect fluid solutions of Einstein's equations
M.S.R. Delgaty,Kayll Lake +1 more
TL;DR: In this paper, the exact solutions to Einstein's equations are compared to the field associated with an isolated static spherically symmetric perfect fluid source, and the candidate solutions are subjected to the following elementary tests: (i) isotropy of the pressure, (ii) regularity at the origin, (iii) positive definiteness of the energy density and pressure at the beginning, vanishing of pressure at some finite radius, and (iv) monotonic decrease of the EE with increasing radius.
Journal ArticleDOI
Paradise Is a Bazaar? Greed, Creed, and Governance in Civil War, 1989-99*
TL;DR: Some prominent recent studies of civil war argue that greed, not grievance, is the primary motivating factor behind violence, basing their conclusions on a strong empirical association between primitives and greed as discussed by the authors.
Journal ArticleDOI
Beyond ΛCDM: Problems, solutions, and the road ahead
Philip Bull,Yashar Akrami,Julian Adamek,Tessa Baker,Emilio Bellini,Jose Beltrán Jiménez,Eloisa Bentivegna,Stefano Camera,Sebastien Clesse,Jonathan H. Davis,Enea Di Dio,Jonas Enander,Alan Heavens,Lavinia Heisenberg,Bin Hu,Claudio Llinares,Roy Maartens,Edvard Mörtsell,Seshadri Nadathur,Johannes Noller,Roman Pasechnik,Marcel S. Pawlowski,Thiago S. Pereira,Miguel Quartin,A. Ricciardone,Signe Riemer-Sørensen,Massimiliano Rinaldi,Jeremy Sakstein,Ippocratis D. Saltas,Vincenzo Salzano,Ignacy Sawicki,Adam R. Solomon,Adam R. Solomon,Adam R. Solomon,Douglas Spolyar,Glenn D. Starkman,Daniele A. Steer,Ismael Tereno,L. Verde,Francisco Villaescusa-Navarro,Mikael von Strauss,Hans A. Winther +41 more
TL;DR: There is a persistent interest in extending cosmology beyond the standard model, ΛCDM, motivated by a range of apparently serious theoretical issues, involving such questions as the cosmological constant problem, the particle nature of dark matter, the validity of general relativity on large scales, the existence of anomalies in the CMB and on small scales, and the predictivity and testability of the inflationary paradigm as mentioned in this paper.
Journal ArticleDOI
Beyond $\Lambda$CDM: Problems, solutions, and the road ahead
Philip Bull,Yashar Akrami,Julian Adamek,Tessa Baker,Emilio Bellini,Jose Beltrán Jiménez,Eloisa Bentivegna,Stefano Camera,Sebastien Clesse,Jonathan H. Davis,Enea Di Dio,Jonas Enander,Alan Heavens,Lavinia Heisenberg,Bin Hu,Claudio Llinares,Roy Maartens,Edvard Mörtsell,Seshadri Nadathur,Johannes Noller,Roman Pasechnik,Marcel S. Pawlowski,Thiago S. Pereira,Miguel Quartin,Angelo Ricciardone,Signe Riemer-Sørensen,Massimiliano Rinaldi,Jeremy Sakstein,Ippocratis D. Saltas,Vincenzo Salzano,Ignacy Sawicki,Adam R. Solomon,Douglas Spolyar,Glenn D. Starkman,Daniele A. Steer,Ismael Tereno,Licia Verde,Francisco Villaescusa-Navarro,Mikael von Strauss,Hans A. Winther +39 more
TL;DR: There is a persistent interest in extending cosmology beyond the standard model, $\Lambda$CDM as discussed by the authors, motivated by a range of apparently serious theoretical issues, involving such questions as the cosmological constant problem, the particle nature of dark matter, the validity of general relativity on large scales, the existence of anomalies in the CMB and on small scales, and the predictivity and testability of the inflationary paradigm.