Results 111 to 120 of about 239,749 (284)
Primary beam calibration for commensal telescopes utilizing offset optics
Frontiers in Astronomy and Space SciencesIntroductionAccurate primary beam calibration is essential for precise brightness measurements in radio astronomy. The VLA Low-band Ionosphere and Transient Experiment (VLITE) faces challenges in calibration due to the offset Cassegrain optics used in ...
Emil Polisensky +3 more
doaj +1 more source
Astronomische Nachrichten, EarlyView.ABSTRACT We investigate the effects of a minimal measurable length on neutron stars, within the quantum hadrodynamics (QHD‐I) model modified by the Generalized Uncertainty Principle (GUP). Working in a deformed Poisson algebra framework, we incorporate GUP effects via a time‐invariant transformation of the phase space volume, effectively reducing the ...
João Gabriel Galli Gimenez +2 more
wiley +1 more source
On the Age Distribution of Classical Cepheids in the Galaxy
Astronomische Nachrichten, EarlyView.ABSTRACT We revisit the problem of the positive correlation between age and Galactocentric distance seen in Galactic Classical Cepheids, which at first sight may seem counter‐intuitive in the context of inside‐out galaxy formation. To explain it, we use the Besançon Galaxy Model and a simulation of star particles in the Galactic disc coupled with ...
Friedrich Anders +5 more
wiley +1 more source
, 2012 Space based gravitational wave astronomy will open a completely new window on the Universe and massive black holes binaries are expected to be among the primary actors on this upcoming stage.
Sesana, A.
core
Teaching Elementary Astronomy in Village Primary Schools in India [PDF]
, 1990 openalex +1 more source
Knowledge acquisition in science and the blurred boundary between perception and cognition
British Educational Research Journal, EarlyView.Abstract This paper provides a critical and detailed study of what researchers in the fields of contemporary cognition and neuroscience have revealed about the blurred boundary between perception and cognition. We set out the arguments with a view to what researchers and teachers should now consider regarding the subtleties of their interrelationship ...
T. G. K. Bryce, E. J. Blown
wiley +1 more source
Iranian Journal of Physics Research, 2010 Energetic secondary particles in gamma and hadron initiated showers can generate Cherenkov photons. Using CORSIKA code and simulation data, different characteristics of lateral distribution of Cherenkov photon density are studied. In particular, physical
G Rastegarzadeh, M Najmi
doaj
Carbon Energy, EarlyView.ABSTRACT Demand for fast‐charging lithium‐ion batteries (LIBs) has escalated incredibly in the past few years. A conventional method to improve the performance is to chemically partly substitute the transition metal with another to increase its conductivity.
Ola Kenji Forslund +9 more
wiley +1 more source
ChemPhysChem, Accepted Article.Bi‐BiOBr‐P25 TiO2 composite exhibits high and synergistic improvements in the photocatalytic activity for nitrogen oxide (NOx) removal. Herein, we explored the influence of adding carbonaceous material to this composite, namely graphene (G), graphene oxide (GO), carbon nanotubes (CNT) and buckminsterfullerene (F); all at 1 wt.%.
Paransa Alimard +7 more
wiley +1 more source
A Survey of Phase Shifters for Microwave Phased Array Systems
International Journal of Circuit Theory and Applications, EarlyView.ABSTRACT Phased Array Systems (PASs) are extensively used in radar and telecommunication systems for diverse applications, including military surveillance and wireless broadband communication. Besides, they are becoming increasingly indispensable in modern applications such as multi‐function phased array radars for weather monitoring and aircraft ...
M. Kebe, M. C. E. Yagoub, R. E. Amaya
wiley +1 more source