Crystal structure and polymorphism of NaSrVO4: the first AIBIIXVO4 larnite-related structure from X-ray powder diffraction data
Sign Up to like & getrecommendations! Published in 2017 at "Physics and Chemistry of Minerals"
DOI: 10.1007/s00269-017-0873-6
Abstract: The previously unknown crystal structure of sodium strontium vanadate, NaSrVO$$_4$$4, is determined and refined from laboratory X-ray powder diffraction data. The title compound exhibits the larnite $$\beta\text{-}\textrm{Ca}_2\textrm{SiO}_4$$β-Ca2SiO4 structure. This is the first report of such… read more here.
Keywords: crystal structure; powder diffraction; chemistry; textrm ... See more keywords
High-TC Superconductivity in Hydrogen Clathrates Mediated by Coulomb Interactions Between Hydrogen and Central-Atom Electrons
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Superconductivity and Novel Magnetism"
DOI: 10.1007/s10948-020-05557-4
Abstract: The uniquely characteristic macrostructures of binary hydrogen-clathrate compounds $M$H$_\textrm{n}$ formed at high pressure, a cage of hydrogens surrounding a central-atom host, is theoretically predicted in various studies to include structurally stable phonon-mediated superconductors. High superconductive… read more here.
Keywords: textrm; lah textrm; central atom; coulomb interactions ... See more keywords
An approximate analytic solution to the coupled problems of coronal heating and solar-wind acceleration
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377821000052
Abstract: Between the base of the solar corona at $r=r_\textrm {b}$ and the Alfvén critical point at $r=r_\textrm {A}$, where $r$ is heliocentric distance, the solar-wind density decreases by a factor $ \mathop > \limits_\sim 10^5$,… read more here.
Keywords: solar wind; textrm esc; textrm textrm; wind ... See more keywords
A Generalization of Steinberg Theory and an Exotic Moment Map
Sign Up to like & getrecommendations! Published in 2020 at "International Mathematics Research Notices"
DOI: 10.1093/imrn/rnaa080
Abstract: For a reductive group $G$, Steinberg established a map from the Weyl group to the set of nilpotent $G$-orbits by using moment maps on double flag varieties. In particular, in the case of the general… read more here.
Keywords: steinberg; moment; moment map; textrm ... See more keywords
Vector Fields and Automorphism Groups of Danielewski Surfaces
Sign Up to like & getrecommendations! Published in 2020 at "International Mathematics Research Notices"
DOI: 10.1093/imrn/rnaa189
Abstract: In this paper, we study the Lie algebra of vector fields ${\operatorname{Vec}}(\textrm{D}_p)$ of a smooth Danielewski surface $\textrm{D}_p$. We prove that the Lie subalgebra $\langle{\operatorname{LNV}}(\textrm{D}_p) \rangle$ of ${\operatorname{Vec}}(\textrm{D}_p)$ generated by locally nilpotent vector fields is… read more here.
Keywords: danielewski surfaces; textrm; automorphism; operatorname ... See more keywords
Post-Keplerian effects on radial velocity in binary systems and the possibility of measuring General Relativity with the star S2 in 2018
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx2134
Abstract: One of the directly measured quantities which are used in monitoring the orbital motions of many of the S stars revolving around the Supermassive Black Hole (SMBH) in the Galactic Center (GC) is their radial… read more here.
Keywords: radial velocity; star; textrm; post keplerian ... See more keywords
The mid-infrared and CO gas properties of an extreme star-forming FeLoBAL quasar
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz1471
Abstract: We present a detailed study of a high-redshift iron low-ionization broad absorption line (FeLoBAL) quasar (SDSS1214 at $z = 1.046$), including new interferometric $^{12}$CO $J$=2-1 observations, optical through far-infrared photometry, and mid-infrared spectroscopy. The CO… read more here.
Keywords: gas; textrm; mid infrared; textrm odot ... See more keywords
Predictor Control for Non Forward Complete Nonlinear System With Time-Varying Input Delay
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2022.3158992
Abstract: We consider $\dot {\textrm {X}}(\textrm {t})=\textrm {X(t)}^{2}+\textrm {U}(\textrm {t}-\textrm {D}(\textrm {t}))$ , where D(t) is a long time-varying delay. If D(t) = 0, $\textrm {U(t)}=-\textrm {X(t)}^{2}-\textrm {cX(t)},\,\,\textrm {c}>0$ is a simply control, but it just… read more here.
Keywords: tex math; inline formula; textrm textrm; textrm ... See more keywords
Pulse-induced transient blue absorption related with long-lived excitonic states in iron-doped lithium niobate
Sign Up to like & getrecommendations! Published in 2019 at "Optical Materials Express"
DOI: 10.1364/ome.9.002748
Abstract: Transient absorption is studied in Fe-doped lithium niobate single crystals with the goal to control and probe a blue absorption feature related with excitonic states bound to Fe$_\textrm {Li}$Li defect centers. The exciton absorption is… read more here.
Keywords: blue absorption; excitonic states; textrm; lithium niobate ... See more keywords
Is the Recently Proposed Mars-Sized Perturber at 65–80 AU Ruled Out by the Cassini Ranging Data?
Sign Up to like & getrecommendations! Published in 2017 at "Frontiers in Astronomy and Space Sciences"
DOI: 10.3389/fspas.2017.00028
Abstract: Recently, the existence of a pointlike pertuber PX with $1~m_\textrm{Mars}\lesssim m_\textrm{X}\lesssim 2.4~m_\oplus$ supposedly moving at $65-80~\textrm{AU}$ along a moderately inclined orbit has been hypothesized in order to explain certain features of the midplane of the… read more here.
Keywords: range; textrm textrm; recently proposed; textrm ... See more keywords