Results 81 to 90 of about 74,154 (347)

On the alleged duality of the Galactic halo [PDF]

Monthly Notices of the Royal Astronomical Society, 2011
17 pages, 12 figures, submitted to ...
Schonrich, R, Asplund, Martin, Casagrande, Luca   +2 more
openaire   +4 more sources

WIMP Annual Modulation with Opposite Phase in Late-Infall Halo Models

, 2000
We show that in the late-infall model of our galactic halo by P. Sikivie the expected phase of the annual modulation of a WIMP halo signal in direct detection experiments is opposite to the one usually expected.
A. Ali, A. Drukier, A.M. Green, C.J. Copi, C.J. Copi, D.W. Evans, E. Bertschinger, F. Comerón, F. Mignard, Graciela Gelmini, J. Fillmore, J. Ipser, J.D. Vergados, J.E. Gunn, K. Freese, L. Baudis, M. Feast, M. Feast, P. Sikivie, P. Sikivie, P. Sikivie, P. Sikivie, Paolo Gondolo, R. Abusaidi, R. Bernabei, R.P. Olling, W. Dehnen, W. Kinney   +27 more
core   +1 more source

High‐Density Boron Nitride Nanotube Composites via Surfactant‐Stabilized Lyotropic Liquid Crystals for Enhanced Space Radiation Shielding

Advanced Functional Materials, EarlyView.
High‐density BNNT films, enabling mechanical robustness and high space radiation shielding effectiveness, are fabricated using surfactant‐stabilized BNNT liquid crystal. Simulations indicate that a 50 g cm−2 BNNT film can reduce radiation exposure by 56% compared to zero shielding, potentially doubling the duration of astronaut missions on the lunar ...
Young‐Kyeong Kim, Ik Jae Lim, Hongjin Lim, Yongbi Joo, Jueun Park, Md Monir Hossain, Hyunjin Cho, Nam‐Ho You, Seokhoon Ahn, Hunsu Lee, Sang Seok Lee, Yongho Joo, Se Youn Moon, Hee Il Yoo, Calista Lum, Cheol Park, Siyoung Q. Choi, Se Gyu Jang   +17 more
wiley   +1 more source

The Galactic Halo in Hydrostatic Equilibrium [PDF]

International Astronomical Union Colloquium, 1997
AbstractThe large scale distribution of gas, magnetic field and cosmic rays in the Galaxy is explored. We analyze recent all-sky surveys of HI gas (Leiden/Dwingeloo survey), soft X-ray radiation (ROSAT) and high energy gamma-rays (EGRET > 100 MeV) in combination with the 408 MHz survey.
Peter M. W. Kalberla, Jürgen Kerp, J. Pietz   +2 more
openaire   +2 more sources

Improving the Angular Resolution of EGRET and New Limits on Supersymmetric Dark Matter Near the Galactic Center

, 2002
Using the EGRET data and an improved point source analysis, including an energy dependent point spread function and an unbinned maximum likelihood technique, we have been able to place considerably lower limits on the gamma ray flux from the galactic ...
Allanach, B. Dingus, Bergstrom, Bergstrom, Bergstrom, D. Hooper, Edsjo, Ellis, Goldberg, Gondolo, Gondolo, Hall, Moore, Navarro, Navarro, Pohl, Ullio, Weinberg   +17 more
core   +1 more source

Ion‐Selective Microporous Membranes via One‐Step Copolymerization Enable High‐Performance Redox Flow Batteries

Advanced Functional Materials, EarlyView.
A scalable one‐step copolymerization strategy is developed to produce low‐cost microporous ion exchange membranes that boost both the efficiency and lifespan of flow batteries. When combined with organic electrolytes in aqueous systems, these membranes enable safe and cheap flow battery energy storage, supporting the widespread integration of renewable
Jiaye Liu, Chunchun Ye, Ying Ma, Rui Tan, Xiangwen Wang, Huiting Zhang, Peng Song, Quan‐Fu An   +7 more
wiley   +1 more source

The galactic population of white dwarfs [PDF]

, 2009
Original paper can be found at: http://www.iop.org/EJ/conf DOI: 10.1088/1742-6596/172/1/012004 [16th European White Dwarfs Workshop]The contribution of white dwarfs of the different Galactic populations to the stellar content of our Galaxy is only poorly
Alcock C Allsman R A Alves D R, Blöcker T, Chabrier G Baraffe I Allard F, Hansen B M S, Holberg J B Oswalt T D, Holberg J B Sion E M Oswalt T McCook G P Foran S, Napiwotzki R Christlieb N Drechsel H, Ralf Napiwotzki, Reid I N Sahu K C, Voss B, Weidemann V   +10 more
core   +2 more sources

Synthesis and Electronic Structure of the Fractionally Occupied Double Perovskite EuTa2O6 with Ordered Europium Vacancies

Advanced Functional Materials, EarlyView.
Two‐dimensional electronic states are the foundation of modern semiconductor technology. Here, we report molecular‐beam epitaxy growth of fractional double perovskite, EuTa2O6. Reciprocal space mapping and transmission electron microscopy confirm a layered ordering of A‐site cations.
Tobias Schwaigert, Ali Barooni, Benjamin Gregory, Paul Malinowski, Anirudh Tenneti, Sonia Hasko, Brenan Palazzolo, Jeffrey W Hodgson, Brendan Faeth, Patrick M. Woodward, Kyle M. Shen, Andrej Singer, Maryam Ghazisaeidi, Salva Salmani‐Rezaie, Darrell G. Schlom, Kaveh Ahadi   +15 more
wiley   +1 more source

The Microlensing and Halo Models of the Galaxy

, 1995
We investigated the dependence of the optical depth $\tau$ of the microlensing events on model parameters of the Galactic halo. We only consider Galactic mass models in which the rotation curve inside the Sun is compatible with the observation and LMC is
Kan-ya, Yukitoshi, Nakamura, Takashi, Nishi, Ryoichi   +2 more
core   +1 more source

Defects Dynamic in Photo‐Excited CeO2 and their Influence on CO2 Photoreduction

Advanced Functional Materials, EarlyView.
X‐ray photoelectron spectroscopy study under light excitation is presented to track the defect dynamic (Ce4+ to Ce3+) in CeO2. Surface enhanced Raman spectroscopy confirmed the key role of Ce3+ states in controlling charge and energy transfer across the CeO2‐dye molecule interface.
Rambabu Yalavarthi, Shashi B. Mishra, Olivier Henrotte, Emiliano Cortes   +3 more
wiley   +1 more source