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Mészáros Effect
The Mészáros effect "is the main physical process that alters the shape of the initial power spectrum of fluctuations in the cold dark matter theory of cosmological structure formation". It was introduced in 1974 by Péter Mészáros considering the behavior of dark matter perturbations in the range around the radiation-matter equilibrium redshift z_\text and up to the radiation decoupling redshift z_\text. This showed that, for a non-baryonic cold dark matter In cosmology and physics, cold dark matter (CDM) is a hypothetical type of dark matter. According to the current standard model of cosmology, Lambda-CDM model, approximately 27% of the universe is dark matter and 68% is dark energy, with only a sm ... not coupled to radiation, the small initial perturbations expected to give rise to the present day large scale structures experience below z_ an additional distinct growth period which alters the initial fluctuation power spectrum, and allows sufficient time for the fluc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold Dark Matter
In cosmology and physics, cold dark matter (CDM) is a hypothetical type of dark matter. According to the current standard model of cosmology, Lambda-CDM model, approximately 27% of the universe is dark matter and 68% is dark energy, with only a small fraction being the ordinary baryonic matter that composes stars, planets, and living organisms. ''Cold'' refers to the fact that the dark matter moves slowly compared to the speed of light, while ''dark'' indicates that it interacts very weakly with ordinary matter and electromagnetic radiation. Proposed candidates for CDM include weakly interacting massive particles, primordial black holes, and axions. History The theory of cold dark matter was originally published in 1982 by James Peebles; while the warm dark matter picture was proposed independently at the same time by J. Richard Bond, Alex Szalay, and Michael Turner; and George Blumenthal, H. Pagels, and Joel Primack. A review article in 1984 by Blumenthal, Sandra Moore Fab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Routledge
Routledge () is a British multinational publisher. It was founded in 1836 by George Routledge, and specialises in providing academic books, journals and online resources in the fields of the humanities, behavioural science, education, law, and social science. The company publishes approximately 1,800 journals and 5,000 new books each year and their backlist encompasses over 70,000 titles. Routledge is claimed to be the largest global academic publisher within humanities and social sciences. In 1998, Routledge became a subdivision and imprint of its former rival, Taylor & Francis Group (T&F), as a result of a £90-million acquisition deal from Cinven, a venture capital group which had purchased it two years previously for £25 million. Following the merger of Informa and T&F in 2004, Routledge became a publishing unit and major imprint within the Informa "academic publishing" division. Routledge is headquartered in the main T&F office in Milton Park, Abingdon, Oxfordshire and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Péter Mészáros
Péter István Mészáros (born 15 July 1943) is a Hungarian-American theoretical astrophysicist, best known for the Mészáros effectMészáros, P., "The behaviour of point masses in an expanding cosmological substratum"Astronomy and Astrophysics, vol. 37, no. 2, Dec. 1974, p. 225-228/ref> in cosmology and for his work on gamma-ray bursts.Mészáros, P. and Rees, M.J., "Optical and Long-Wavelength Afterglow from Gamma-Ray Bursts"The Astrophysical Journal, Volume 476, Issue 1, Feb. 1997, pp. 232-237/ref>Rees, M.J. and Mészáros, P., "Unsteady Outflow Models for Cosmological Gamma-Ray Bursts"Astrophysical Journal Letters v.430, August 1994, pp.L93-L96/ref> Life Péter Mészáros was born in 1943 in Budapest, Hungary, and grew up in Liège, Belgium and Buenos Aires, Argentina, where he did his undergraduate studies. He received his PhD in 1972 from the University of California, Berkeley, and after postdoctoral fellowships at Princeton University and Cambridge University he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
