搜索结果: 1-10 共查到“理论天体物理学 dark matter”相关记录10条 . 查询时间(0.023 秒)
Mystery of dark matter — and search for WIMP（图）
暗物质 WIMP 粒子物理学
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2023/6/21
Scientists know that dark matter exists because although we can’t see it, we can see the effects of what it does in the world, sort of like a ghost bumping around a haunted house. And we’re not sure w...
Most precise accounting yet of dark energy and dark matter（图）
暗能量 暗物质核算 超新星爆炸 天体物理学
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2023/6/21
Astrophysicists have performed a powerful new analysis that places the most precise limits yet on the composition and evolution of the universe. With this analysis, dubbed Pantheon+, cosmologists find...
Axino dark matter and baryon number asymmetry from Q-ball decay in gauge mediation
Axino dark matter baryon number asymmetry Q-ball decay gauge mediation
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2012/2/21
We investigate the Q-ball decay into the axino dark matter in the gauge-mediated supersymmetry breaking. In our scenario, the Q ball decays mainly into nucleons and partially into axinos to account fo...
Using Dark Matter Haloes to Learn about Cosmic Acceleration: A New Proposal for a Universal Mass Function
Dark Matter Haloes Cosmic Acceleration
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2011/1/11
Structure formation provides a strong test of any cosmic acceleration model because a successful dark energy model must not inhibit {\black or overpredict} the development of observed large-scale stru...
A Census of Baryons and Dark Matter in an Isolated, Milky Way-sized Elliptical Galaxy
Baryons Dark Matter Milky Way-sized Elliptical Galaxy
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2011/1/13
We present a study of the dark and luminous matter in the isolated elliptical galaxy NGC720, based on deep X-ray observations made with Chandra and Suzaku. The gas is reliably measured to ~R2500, allo...
New particle links dark matter with missing antimatter（图）
New particle dark matter missing antimatter
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2010/11/30
Physicists in the US and Canada have proposed a new particle that could solve two important mysteries of modern physics: what is dark matter and why is there much more matter than antimatter in the un...
Turning off the Lights: How Dark is Dark Matter?
Dark Matter?
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2010/11/16
We consider current observational constraints on the electromagnetic charge of dark matter. The
velocity dependence of the scattering cross-section through the photon gives rise to qualitatively di e...
Prospects For Identifying Dark Matter With CoGeNT
Dark Matter With CoGeNT
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2010/11/16
could be generated by elastically scattering dark matter particles with a mass of approximately 5-15 GeV. This mass range is very similar to that required to generate the annual modulation observed by...
Spin-Dependent Limits from the DRIFT-IId Directional Dark Matter Detector
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2011/1/5
Data are presented from the DRIFT-IId detector housed in the Boulby mine in northeast England. A 0.8 m^3 fiducial volume, containing partial pressures of 30 Torr CS2 and 10 Torr CF4, was exposed for a...
Luke-warm dark matter: Bose-condensation of ultra-light particles
Luke-warm dark matter ultra-light particles
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2010/3/8
We discuss the thermal evolution and Bose condensation of ultra-light scalar particles with Compton wavelength of galactic scales. We find an upper bound of 1.5 K for the dark matter temperature from ...