Results 51 to 60 of about 5,123,669 (303)
Dark-matter spike at the galactic center? [PDF]
Physical Review D, 2001 11 pages, 6 ...
Ullio, P., Zhao, H., Kamionkowski, M.
openaire +3 more sources
Current‐Driven Chirality Detection of Magnetic Textures in Cylindrical Nanowires
Advanced Functional Materials, EarlyView.Current‐assisted anisotropic magnetoresistance measurements in individual Ni/Au cylindrical nanowires enable detection of vortex chirality near Au segments and selective magnetic reversal in defined wire sections at magnetic fields lower than the propagation field. This approach provides a simple, cost‐effective, and non‐invasive method for probing and
Javier Rial +6 more
wiley +1 more source
The Galactic Center compared with nuclei of nearby galaxies
, 2016 Understanding our Galactic Center is easier with insights from nearby galactic nuclei. Both the star formation activity in nuclear gas disks, driven by bars and nuclear bars, and the fueling of low-luminosity AGN, followed by feedback of jets, driving ...
Francoise Combes, Combes, Francoise
core +1 more source
Frame-dragging and the kinematics of galactic-center stars [PDF]
, 2009 We calculate the effects of frame dragging on the Galactic-Center stars. Assuming the stars are only slightly relativistic, we derive an approximation to the Kerr metric, which turns out to be a weak-field Schwarzschild metric plus a frame-dragging term.
Kannan, R +3 more
core +1 more source
Dirac Semimetallicity Enabled by Stripe Antiferromagnetism in Monolayer FeSe
Advanced Functional Materials, EarlyView.In monolayer FeSe, stripe antiferromagnetic order selectively breaks mirror symmetry, enabling odd inter‐orbital hybridization between opposite‐parity Fe 3d states. This mechanism stabilizes symmetry‐protected Dirac nodes with nontrivial Wilson‐loop topology and edge states, accompanied by a strong orbital diamagnetic susceptibility as an experimental ...
Darius‐Alexandru Deaconu +5 more
wiley +1 more source
ON THE ORIGIN OF THE B-STARS IN THE GALACTIC CENTER [PDF]
The Astrophysical Journal, 2014 We present a new directly-observable statistic which uses sky position and proper motion of stars near the Galactic center massive black hole to identify populations with high orbital eccentricities. It is most useful for stars with large orbital periods for which dynamical accelerations are difficult to determine. We apply this statistic to a data set
Madigan, A. +5 more
openaire +3 more sources
Switching Superconductivity with Uniaxial Strain in a high‐Tc${\rm T}_{c}$ Cuprate Superconductor
Advanced Functional Materials, EarlyView.Uniaxial strain is demonstrated as a new scheme for a superconductivity switch. Exploiting the large strain‐induced Tc shift in a cuprate superconductor enables robust switching between superconducting and normal states over 100 cycles with only 0.1% strain.
Baizhi Gao +3 more
wiley +1 more source
The Galactic Center Lobe as an H ii Region
The Astrophysical JournalThe Galactic center lobe (GCL) is an object ∼1° across that is located north of the Galactic center. In the mid-infrared (MIR) the GCL appears as two 8.0 μ m filaments between which there is strong 24 μ m and radio continuum emission.
L. D. Anderson +7 more
doaj +1 more source
The Astrophysical Journal Letters, 2022 In this paper we provide a first physical interpretation for the Event Horizon Telescope's (EHT) 2017 observations of Sgr A*. Our main approach is to compare resolved EHT data at 230 GHz and unresolved non-EHT observations from radio to X-ray wavelengths
Event Horizon Telescope Collaboration +274 more
doaj +1 more source
On the origin of young stars at the Galactic center [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractThe center of our Galaxy is home to a massive black hole, Sgr A*, and a nuclear star cluster containing stellar populations of various ages. While the late type stars may be too old to have retained memory of their initial orbital configuration, and hence formation mechanism, the kinematics of the early type stars should reflect their original ...
Madigan, A. +5 more
openaire +3 more sources