Results 91 to 100 of about 55,852 (170)
Gamma-rays From Warm WIMP Dark Matter Annihilation
, 2012 The weakly interacting massive particle (WIMP) often serves as a candidate for the cold dark matter, however when produced non-thermally it could behave like warm dark matter.
Bi, Xiao-Jun +6 more
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A Comparison of Galacticus and COZMIC WDM Subhalo Populations
The Open Journal of AstrophysicsWe present a comparative analysis of warm dark matter (WDM) subhalo populations generated by the semi-analytic model Galacticus and the COZMIC suite of dark matter-only $N$-body simulations. Using a range of thermal relic WDM particle masses (3--10 keV),
Jack Lonergan +2 more
doaj +1 more source
Can We Constrain Warm Dark Matter Masses with Individual Galaxies?
The Astrophysical JournalWe 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.
Shurui Lin +11 more
doaj +1 more source
Guangtongxin yanjiu, 2003 Internet流量的指数级增长和波分复用 （ WDM）在传送网中的主导地位 ,使得直接利用 WDM技术承载 IP业务的 IP over WDM光网络成为理想的选择 .通过对其三个发展阶段的介绍和分析 ,文章旨在探讨 IP over WDM光网络的演进思路 .
潘勇, 张民, 叶培大
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New Galaxy UV Luminosity Constraints on Warm Dark Matter from JWST
The Astrophysical JournalWe 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 make high-
Bin Liu, Huanyuan Shan, Jiajun Zhang
doaj +1 more source
An 8 × 200 Gbps wavelength-division multiplexing transmitter using lithium tantalate
PhotoniXLarge-capacity data transmission is increasingly required to meet the growing demands of big data and artificial intelligence applications. Wavelength-division multiplexing (WDM) technology is a reliable method of increasing link capacity by enabling ...
Mingyu Zhu +10 more
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Guangtongxin yanjiu, 1999 全光网络是目前光通信研究的热点。本文首先简要分析了波分复用ＷＤＭ全光网络的产生原因，接着介绍了ＷＤＭ全光网络的概念及其优势。之后通过对两个典型的ＷＤＭ全光试验网的介绍，从一个侧面展示了它的发展现状。最后介绍了ＩＴＵ－Ｔ在ＷＤＭ全光网络标准化研究方面的最新进展。
刘伟福, 吴志坚
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Multimode fiber optic wavelength division multiplexing [PDF]
Optical wavelength division multiplexing (WDM) systems, with signals transmitted on different wavelengths through a single optical fiber, can have increased bandwidth and fault isolation properties over single wavelength optical systems.
Spencer, J. L.
core +1 more source
Guangtongxin yanjiu, 2001 综述了 WDM光传送网的设计和操作问题 .首先介绍了一些基本概念 ,然后给出了有关 WDM光传送网设计的不同问题及其设计方法 ,最后描述了对 ...
孙俊
doaj
Guangtongxin yanjiu, 1997 提出了在未来的光孤子波分复用／时分复用（ＷＤＭ／ＯＴＤＭ）网络中由ＷＤＭ到ＯＴＤＭ节点处的转换复用的概念系统。主要的模块是完成波长转换的基于交叉增益调制的半导体光放大器（ＳＯＡ）、同步和延时及时分复用模块。通过ＳＯＡ可以实现全光的ＷＤＭ到ＯＴＤＭ的波长转换和复用，是ＷＤＭ ...
张春燕, 叶培大
doaj