Results 71 to 80 of about 368,263 (301)
Stability of the mixed phase in hybrid stars
, 2004 The transition from hadronic matter to quark matter in the core of neutron stars is likely to be associated with the appearance of a mixed phase, leading to a smooth variation of the star density profile.
Akmal +30 more
core +1 more source
Periodic Halpha variations in GL 581: Further evidence for an activity origin to GL 581d [PDF]
, 2015 Radial velocity measurements showed evidence that the M dwarf GL 581 might host a planet, GL 581d, in the so-called "habitable zone" of the star. A study of Halpha in GL 581 demonstrated that changes in this activity indicator correlated with radial velocity variations attributed to GL 581d.
arxiv +1 more source
Advanced Functional Materials, EarlyView.An asymmetric non‐fullerene acceptor BTP‐FT is developed by extending the end group of Y6‐BO with thiophene. The conformation of the molecule is determined by the noncovalent F···S interaction as demonstrated by 2D NMR and simulations. An efficiency of 18.39% is achieved in the resulting ternary solar cells processed from toluene.
Jingnan Wu +14 more
wiley +1 more source
A Review of the Characteristics of Light Pollution: Assessment Technique, Policy, and Legislation
EnergiesLight pollution from the use of artificial lighting poses significant impacts on human health, traffic safety, ecological environment, astronomy, and energy use.
Ying Hao +4 more
doaj +1 more source
MULTIPLE CORRELATION MODELS OF DEPENDENCE OF RADIANT FLUXES OF COSMIC RADIO SOURCES ON EXTREME CONDITIONS OF SPACE WEATHER AT DECAMETER WAVES [PDF]
Radio Physics and Radio Astronomy, 2018 Purpose: Investigation of the effects of the influence of solar and geomagnetic activity on the condition of the Earth’s upper atmosphere by the method of “transmission through” it with the radiation of cosmic radio sources.
L. I. Sobitniak
doaj +1 more source
Visible-IR Colors and Lightcurve Analysis of Two Bright TNOs: 1999 TC36 and 1998 SN165
, 2002 We report on observations of two bright Trans-Neptunian Objects (TNOs) - 1999 TC36 and 1998 SN165}- during two observational campaigns, as part of the Meudon Multicolor Survey of Outer Solar System Objects. V-J color was measured for 1999 TC36 (V-J=2.34+/
Doressoundiram, A. +2 more
core +2 more sources
On Measuring the Variation of High Energy Cut-off in Active Galactic Nuclei [PDF]
, 2018 The variation in the high energy cut-off E_c in active galactic nuclei uniquely probes the corona physics. In this work we show that the ratio of two NuSTAR spectra (in analogy to difference imaging technique widely used in astronomy) is uniquely useful in studying E_c variations.
arxiv +1 more source
Advanced Functional Materials, EarlyView.EuSc₂Te₄, an antiferromagnetic semiconductor, exhibits a nonlinear Hall effect (NLHE) characterized by quadratic current–voltage behavior. Combined experimental and theoretical studies reveal that this NLHE is linked to its antiferromagnetism and involves contributions from the quantum metric.
Seng Huat Lee +15 more
wiley +1 more source
Mid-latitude Geomagnetic Field Analysis Using BOH Magnetometer: Preliminary Results [PDF]
Journal of Astronomy and Space Sciences, 2011 Korea Astronomy and Space Science Institute researchers have installed and operated magnetometers at Mt. Bohyun Observatory to measure the Earth's magnetic field variations in South Korea.
Junga Hwang +4 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Low‐dimensional halide perovskite thin films, (BA)2(MA)n‐1PbnBr3n+1 (n = 1, 2), exhibit both semiconducting and ferroelectric properties, enabling mechanical and light energy harvesting. Using Cr/Cr₂O₃ or PCBM as barrier layers ensures reproducible ferroelectricity.
Raja Sekhar Muddam +8 more
wiley +1 more source