Results 81 to 90 of about 55,852 (170)

Constraining warm dark matter with cosmic shear power spectra

, 2011
We investigate potential constraints from cosmic shear on the dark matter particle mass, assuming all dark matter is made up of light thermal relic particles.
A. Albrecht ., A. Albrecht ., A. Cooray, A. Cooray, A. Lewis, A. Rassat ., A. Refregier ., A.R. Zentner, Anže Slosar, B.M. Schaefer, C.-P. Ma, C.-P. Ma, D. Clowe, D.J. Bacon, D.J. Eisenstein, E. Polisensky, F.D. Steffen, H. Hoekstra, I. Smail, J. Diemand, J. Sommer-Larsen, J. Zavala ., J.A. Peacock, J.A. Peacock ., J.D. Simon, J.F. Navarro, J.M. Centrella, J.P. Henry, Jochen Weller, Katarina Markovic, M. Laine, M.J. White, P. Bode, P. Colin, R. Massey, R.E. Smith, R.E. Smith ., S. Miyazaki ., S.M.K. Alam, Sarah Bridle, SDSS collaboration, U. Seljak, V. Avila-Reese, W. Hu, Y.B. Zel'dovich   +44 more
core   +1 more source

A 103.12-Gb/s WDM PAM4 VCSEL-Based Transmission With Light Injection and Optoelectronic Feedback Techniques

IEEE Photonics Journal, 2017
A 103.12-Gb/s wavelength-division-multiplexing (WDM) four-level pulse amplitude modulation (PAM4) transmission based on 850-nm and 880-nm vertical-cavity surface-emitting lasers (VCSELs) with light injection and optoelectronic feedback techniques ...
Hai-Han Lu, Chung-Yi Li, Chang-Kai Lu, Chun-Ming Ho, Hwan-Wei Chen, Ming-Te Cheng, Zih-Yi Yang, Sheng-Jhe Huang   +7 more
doaj   +1 more source

The sizes of mini-voids in the local universe: an argument in favor of a warm dark matter model?

, 2009
Using high-resolution simulations within the Cold and Warm Dark Matter models we study the evolution of small scale structure in the Local Volume, a sphere of 8 Mpc radius around the Local Group.
A. V. Tikhonov, Abazajian, Abazajian, Avila-Reese, Baugh, Begum, Begum, Bode, Bryan, Colberg, Colín, Crain, El-Ad, G. Yepes, Gottlöber, Hoeft, Hoffman, Hoffman, Karachentsev, Kazantzidis, Kirshner, Klypin, Knebe, Knollmann, Koposov, Macciò, Martinez-Vaquero, Miranda, Moore, Neto, Okamoto, Peebles, Peebles, Peñarrubia, S. Gottlöber, Spergel, Spergel, Springel, Steffen, Stoehr, Tikhonov, Tikhonov, van den Bosch, Viel, Viel, Viel, Wang, Y. Hoffman, Zavala   +48 more
core   +1 more source

Warm Dark Matter Galaxies with Central Supermassive Black-Holes

, 2017
We generalize the Thomas-Fermi approach to galaxy structure to include self-consistently and non-linearly central supermassive black holes. This approach naturally incorporates the quantum pressure of the warm dark matter (WDM) particles and shows its ...
de Vega, Hector J., Sanchez, Norma G.
core   +1 more source

Slimmed Optical Neural Networks with Multiplexed Neuron Sets and a Corresponding Backpropagation Training Algorithm

Intelligent Computing
Optical neural networks (ONNs) have recently attracted extensive interest as potential alternatives to electronic artificial neural networks, owing to their intrinsic capabilities in parallel signal processing with reduced power consumption and low ...
Yi-Feng Liu, Rui-Yao Ren, Dai-Bao Hou, Hai-Zhong Weng, Bo-Wen Wang, Ke-Jie Huang, Xing Lin, Feng Liu, Chen-Hui Li, Chao-Yuan Jin   +9 more
doaj   +1 more source

Non-empirical Generalized Gradient Approximation Free Energy Functional for Orbital-free Simulations

, 2013
We report the first wholly non-empirical generalized gradient approximation, non-interacting free energy functional for orbital-free density functional theory and use that new functional to provide forces for finite-temperature molecular dynamics ...
Chakraborty, Debajit, Karasiev, Valentin V., Shukruto, Olga A., Trickey, S. B.   +3 more
core   +1 more source

A Wavelength-Division-Multiplexed Passive Optical Network With Simultaneous Centralized Light Source and Broadcast Capability

IEEE Photonics Journal, 2010
We propose and experimentally demonstrate a wavelength-division-multiplexed (WDM) passive optical network (PON) architecture with simultaneous centralized light source and broadcast capability. The proposed WDM-PON supports simultaneous delivery of 10-Gb/
Fangzheng Zhang, Songnian Fu, Jian Wu, Kun Xu, Jintong Lin, Ping Shum   +5 more
doaj   +1 more source

Towards the Chalonge 17th Paris Cosmology Colloquium 2013: highlights and conclusions of the Chalonge 16th Paris Cosmology Colloquium 2012

, 2013
LWDM (Warm Dark Matter) is progressing impressively.The galactic scale crisis and decline of LCDM+baryons are staggering. The 16th Paris Chalonge Colloquium 2012 combined real cosmological/astrophysical data and hard theory predictive approach in the ...
de Vega, H. J., Falvella, M. C., Sanchez, N. G.   +2 more
core  

Simulating nonlinear cosmological structure formation with massive neutrinos

, 2016
We present a new method for simulating cosmologies that contain massive particles with thermal free streaming motion, such as massive neutrinos or warm/hot dark matter.
Banerjee, Arka, Dalal, Neal
core   +1 more source

KeV Warm Dark Matter and Composite Neutrinos

, 2012
Elementary keV sterile Dirac neutrinos can be a natural ingredient of the composite neutrino scenario. For a certain class of composite neutrino theories, these sterile neutrinos naturally have the appropriate mixing angles to be resonantly produced warm
A Anisimov, A Boyarsky, A Boyarsky, A Boyarsky, A Boyarsky, A Boyarsky, A Boyarsky, A Dolgov, A Kusenko, A Kusenko, A Kusenko, A Merle, A Rajaraman, C-Q Geng, CR Watson, D Aristizabal Sierra, D Boyanovsky, Dean J. Robinson, E Farhi, E Komatsu, F Bezrukov, GB Gelmini, H Vega de, H Vega de, J Beringer, J Wu, J Zavala, K Abazajian, K Petraki, KA Olive, KL McDonald, M Duerr, M Laine, M Loewenstein, M Loewenstein, M Shaposhnikov, N Arkani-Hamed, P Bode, PJ Fox, PL Biermann, R Hundi, S Das, S Dodelson, T Araki, T Asaka, T Csorgo, T DeGrand, T Okui, U Seljak, W Liao, X-D Shi, Y Grossman, Y Grossman, Yuhsin Tsai   +53 more
core   +1 more source