Results 91 to 100 of about 73,052 (295)

Bubbles in galactic haloes

, 2001
11 pages, 4 Figs, Talk at the JENAM, May 29 -- June 3, 2000 ...
Shchekinov, Yu. A., Dettmar, R. -J., Schroeer, A., Steinacker, A.   +3 more
openaire   +2 more sources

Midbrain PAG Astrocytes Modulate Mouse Defensive and Panic‐Like Behaviors

Advanced Science, EarlyView.
Astrocytes in the midbrain periaqueductal gray (PAG) dynamically encode threat intensity and shape defensive action selection in mice. Real‐time Ca2+ imaging reveals robust astrocytic activation during predator odor and CO2 exposure. Aberrant astrocytic Ca2+ overactivation disrupts goal‐directed escape, biases behavior toward freezing, and induces ...
Ellane Barcelon, Kyungchul Noh, Minkyu Hwang, Yoon‐Jung Kim, Unjin Lee, Yeon Joo Ryu, Je‐Kyung Ryu, Sang Beom Jun, Se‐Young Choi, Woo‐Hyun Cho, Sung Joong Lee   +10 more
wiley   +1 more source

Retracted: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

Chemie Ingenieur Technik, EarlyView., 2023
Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley   +1 more source

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

A new empirical fit to galaxy rotation curves

Frontiers in Astronomy and Space Sciences
We present a new empirical model for galaxy rotation curves that introduces a velocity correction term ω, derived from observed stellar motion and anchored to Keplerian baselines.
David C. Flynn, Jim Cannaliato
doaj   +1 more source

The Dark Matter Annihilation Signal from Dwarf Galaxies and Subhalos

Advances in Astronomy, 2010
Dark Matter annihilation holds great potential for directly probing the clumpiness of the Galactic halo that is one of the key predictions of the Cold Dark Matter paradigm of hierarchical structure formation.
Michael Kuhlen
doaj   +1 more source

Layer‐Dependent Antiferromagnetic Chern and Axion Insulating States in UOTe

Advanced Science, EarlyView.
Layer‐dependent topological phases are identified in the van der Waals antiferromagnet UOTe. Ab initio calculations reveal bilayer UOTe as a rare example of high‐temperature antiferromagnetic Chern insulator with quantized Hall conductivity and near‐zero net magnetization, while odd‐layer films exhibit axion‐insulator‐like behavior with quantized spin ...
Sougata Mardanya, Barun Ghosh, Mengke Liu, Christopher Broyles, Junyeong Ahn, Kai Sun, Jennifer E. Hoffman, Sheng Ran, Arun Bansil, Su‐Yang Xu, Sugata Chowdhury   +10 more
wiley   +1 more source

A vertically orientated dark matter halo marks a flip of the Galactic disc

Astronomy & Astrophysics
Unveiling the 3D shape of the Milky Way’s dark-matter halo is critical to understanding its formation history. We created an innovative dynamical model that makes minimal assumptions about the internal dynamical structures and accommodates a highly ...
Zhu Ling, Cai Runsheng, Kang Xi, Xue Xiang-Xiang, Yang Chengqun, Zhang Lan, Mao Shude, Liu Chao   +7 more
doaj   +1 more source

Early Detection of Cell Death Using Transmembrane Water Exchange Magnetic Resonance Imaging

Advanced Science, EarlyView.
Cell death is important in both the development and treatment of cancer. In this study, it is demonstrated for the first time that a specific measurement of the transmembrane water exchange rate using magnetic resonance imaging can be used as an early marker of cell death in mammalian cells, in animals and in human patients. Abstract Cell death plays a
Athanasia Kaika, Luca Nagel, Ulrike Höckendorf, Bangwen Xie, Geoffrey J. Topping, Mathias Schillmaier, Irina Beer, Frits H. A. van Heijster, Julian Rauch, Tristan A. Kuder, Sandra Sühnel, Bernd Erber, Christian Lohrmann, Simone Ballke, Thomas Metzler, Katja Steiger, Philipp J. Jost, Natalia P. Ivleva, Philipp Paprottka, Jonathan Nadjiri, Kevin M. Brindle, Wolfgang A. Weber, Franz Schilling   +22 more
wiley   +1 more source

Insight Into the Formation of the Milky Way Through Cold Halo Substructure. III. Statistical Chemical Tagging in the Smooth Halo

, 2012
We find that the relative contribution of satellite galaxies accreted at high redshift to the stellar population of the Milky Way's smooth halo increases with distance, becoming observable relative to the classical smooth halo about 15 kpc from the ...
Beers, Timothy C., Bizyaev, Dmitry, Lee, Young Sun, Madau, Piero, Prieto, Carlos Allende, Rashkov, Valery, Rockosi, Constance M., Schlaufman, Kevin C.   +7 more
core   +1 more source