Zobrazeno 1 - 10
of 2 413
pro vyhledávání: '"Warm dark matter"'
Autor:
Zhijian Zhang, Weikang Lin
Publikováno v:
The Astrophysical Journal Letters, Vol 973, Iss 2, p L42 (2024)
The suppression of the small-scale matter power spectrum is a distinct feature of warm dark matter (WDM), which permits a constraint on the WDM mass from galaxy surveys. In the thermal relic WDM scenario, quantum statistical effects are not manifest.
Externí odkaz:
https://doaj.org/article/eefa361b28c94af7a1edd41ee2771bb0
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 135 (2024)
The dark matter subhalos orbiting in a galactic halo perturb the orbits of stars in thin stellar streams. Over time, the random velocities in the streams develop non-Gaussian wings. The rate of velocity increase is approximately a random walk at a ra
Externí odkaz:
https://doaj.org/article/1564a3d1cdd94fb783934b5c754fbee1
Autor:
Shurui Lin, Francisco Villaescusa-Navarro, Jonah Rose, Paul Torrey, Arya Farahi, Kassidy E. Kollmann, Alex M. Garcia, Sandip Roy, Mark Vogelsberger, Nitya Kallivayalil, Yi-Fu Cai, Wentao Luo
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 2, p 170 (2024)
We study the impact of warm dark matter (WDM) mass on the internal properties of individual galaxies using a large suite of 1024 state-of-the-art cosmological hydrodynamic simulations from the DREAMS project. We take individual galaxies’ properties
Externí odkaz:
https://doaj.org/article/dc4ab584b457403ba4bbb592c25356f4
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 79 (2024)
We exploit the recent James Webb Space Telescope (JWST) determination of galaxy UV luminosity functions over the redshift range z = 9–14.5 to derive constraints on warm dark matter (WDM) models. The delayed structure formations in WDM universes mak
Externí odkaz:
https://doaj.org/article/171c1ff2a2014c1ca85ec662dc65d81f
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 62 (2024)
We investigate the feasibility of using the velocity acoustic oscillations (VAO) features on the Cosmic Dawn 21 cm power spectrum to probe small-scale density fluctuations. In the standard cold dark matter (CDM) model, Population III stars form in mi
Externí odkaz:
https://doaj.org/article/e44e6e71701d4ed8af815620119e154c
Autor:
Bruce Hoeneisen
Publikováno v:
ACI Avances en Ciencias e Ingenierías, Vol 15, Iss 1 (2023)
A data driven solution to the dark matter problem is presented. This short and self-contained overview is intended for a wide audience, with full technical details available in the cited references. We present redundant, independent and consistent me
Externí odkaz:
https://doaj.org/article/b6417a0571cb4cfd8462ce9aca34a4d3
Akademický článek
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Akademický článek
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Autor:
Christopher G. Tully, Gemma Zhang
Publikováno v:
Universe, Vol 8, Iss 2, p 118 (2022)
The Cosmic Neutrino Background (CνB) anisotropies for massive neutrinos are a unique probe of large-scale structure formation. The redshift-distance measure is completely different for massive neutrinos as compared to electromagnetic radiation. The
Externí odkaz:
https://doaj.org/article/bc4c056a8882416ca82fdb8fd1de6e54
Autor:
Sinziana Paduroiu
Publikováno v:
Universe, Vol 8, Iss 2, p 76 (2022)
In recent years, warm dark matter models have been studied as a viable alternative to the cold dark matter models. The warm dark matter particle properties are expected to imprint distinct signatures on the structure formation at both large and small
Externí odkaz:
https://doaj.org/article/6536353f5ec5463db97f25f2fa3975be