Results 41 to 50 of about 4,715,495 (301)

THE GALACTIC CENTER WEATHER FORECAST [PDF]

open access: yesThe Astrophysical Journal, 2012
15 pages, 5 figures, accepted to ApJ ...
Moscibrodzka, Monika   +3 more
openaire   +2 more sources

Giant Magnetic Coercivity Driven by Spin‐Bag Ferromagnetism in Epitaxial Sr3YCo4O10+δ Films with Engineered 2D Oxygen Vacancy Ordering

open access: yesAdvanced Functional Materials, EarlyView.
A giant magnetic coercivity and a vertical shift of hysteresis loops are demonstrated in Sr3YCo4O10+δ epitaxial films. The hard magnetic behavior originates from ferromagnetic spin bags stabilized within a long‐range ordered oxygen‐vacancy structure.
Yanbin Chen   +12 more
wiley   +1 more source

Relativistic Dark Matter at the Galactic Center [PDF]

open access: yes, 2007
In a large region of the supersymmetry parameter space, the annihilation cross section for neutralino dark matter is strongly dependent on the relative velocity of the incoming particles.
/Stanford U., Phys. Dept. /KIPAC, Menlo Park   +2 more
core  

Identifying Dark Matter Burners in the Galactic Center [PDF]

open access: yes, 2007
If the supermassive black hole (SMBH) at the center of our Galaxy grew adiabatically, then a dense ''spike'' of dark matter is expected to have formed around it.
Lawrence L. Wai   +3 more
core   +1 more source

Atom Probe Tomography as an Emerging Tool for Understanding Defect‑Driven Mechanisms in HfO2‑Based Ferroelectrics

open access: yesAdvanced Functional Materials, EarlyView.
This Perspective highlights atom probe tomography as a powerful tool for understanding the atomic‐scale defect chemistry in HfO2‐based ferroelectrics. 3D mapping of dopants, point defects, and interface chemistry can provide new insight into defect‐driven mechanisms underpinning the ferroelectricity in the system and guide the design of more reliable ...
Kasper Hunnestad   +3 more
wiley   +1 more source

Galactic Center Studies with CTA-LST-1 [PDF]

open access: yes
The Galactic Center region is known to host a wide variety of very-high-energy gamma-ray sources. In 2018 the prototype of the Large-Sized Telescope (LST-1) for CTA was inaugurated, and has been regularly observing the Galactic Center since 2021.
Caroff, Sami   +288 more
core   +3 more sources

The Galactic Center [PDF]

open access: yesHighlights of Astronomy, 1992
AbstractThe dynamic subject of the Galactic center is driven mostly by high-resolution imaging both in the continuum and in the spectral line modes in a number of wavelength regimes. An attempt has been made to give a short overview of recent observations in this region, as follows: 1) Unusual characteristics of the population of molecular and dust ...
openaire   +1 more source

Dark-matter spike at the galactic center? [PDF]

open access: yesPhysical Review D, 2001
11 pages, 6 ...
Ullio, P., Zhao, H., Kamionkowski, M.
openaire   +3 more sources

Electrostatic Superlattices Beyond 1:1 Stoichiometry

open access: yesAdvanced Functional Materials, EarlyView.
Polymer‐mediated charge regulation drives two hierarchical routes to higher‐stoichiometry nanoparticle superlattices. Tuning the polymer's molecular weight promotes progressive interstitial filling, transforming ZnS into the fully occupied CaF2${\rm CaF}_2$ lattice. Exchanging polymer assignment between large and small nanoparticles instead breaks CsCl
Binay P. Nayak   +7 more
wiley   +1 more source

The location and kinematics of the emission line regions in Active Galactic Nuclei [PDF]

open access: yes, 2008
This thesis contains the results from a study of the optical emission lines of various samples of active galactic nuclei (AGN). We have used three separate techniques to determine the precise kinematics and the relative location of the emission line ...
Mullaney, J R, Mullaney, J.R.
core  

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