Zobrazeno 1 - 10
of 530
pro vyhledávání: '"Nouh M"'
Publikováno v:
Applied Mathematics and Nonlinear Sciences, Vol 2, Iss 2, Pp 559-564 (2017)
We present a synthetic spectra study of two new galactic early-type O4 dwarf stars(ALS 19618 and BD+50886) with high signal-to-noise ratio, typically S/N ∼ 300, medium-rosalution R ∼ 2500 optical spectra of O4 dwarfs stars from Galactic O-Stars S
Externí odkaz:
https://doaj.org/article/ad538974c5ce4f4a8b1906b95d251664
The ability of mechanical systems to perform basic computations has gained traction over recent years, providing an unconventional alternative to digital computing in off grid, low power, and severe environments which render the majority of electroni
Externí odkaz:
http://arxiv.org/abs/2308.04002
Publikováno v:
Phys. Rev. Applied 18, 044013 (2022)
Unraveling real eigenfrequencies in non-Hermitian $\mathcal{PT}$-symmetric Hamiltonians has opened new avenues in quantum physics, photonics, and most recently, phononics. However, the existing literature squarely focuses on exploiting such systems i
Externí odkaz:
http://arxiv.org/abs/2206.08338
In the present article, we present a spectroscopic analysis of 83 field B-type stars from NOAO Indo-U.S. Library. We calculated the fundamental parameters e.g effective temperatures, surface gravities, and rotational velocities using Barbier-Chalonge
Externí odkaz:
http://arxiv.org/abs/2112.14561
Truly, kinematics in the Solar neighborhood has provided important information both for the structure and for the evolution of the Galaxy since the early 20th century. The relationship between Oort constants and the ratio of the velocity dispersion a
Externí odkaz:
http://arxiv.org/abs/2109.11056
A main question in astrophysics and cosmology has been the severe stability of the astrophysical objects, whether a particular equilibrium configuration is stable. In this article, we study the relativistic self-gravitating, hydrostatic spheres with
Externí odkaz:
http://arxiv.org/abs/2107.14618
Local resonance band gaps in acoustic metamaterials are widely known for their strong attenuation yet narrow frequency span. The latter limits the practical ability to implement subwavelength band gaps for broadband attenuation and has motivated nove
Externí odkaz:
http://arxiv.org/abs/2107.08431
In this study, we present a spectroscopic analysis of the bright Be star kappa Dra. Two independent sets of radial velocity velocities (RV) measurements were obtained by direct measurement and using a line profile disentangling technique. Using a com
Externí odkaz:
http://arxiv.org/abs/2010.08898
Publikováno v:
Scientific Reports 10, 21339 (2020)
Acoustic phased arrays are capable of steering and focusing a beam of sound via selective coordination of the spatial distribution of phase angles between multiple sound emitters. Constrained by the principle of reciprocity, conventional phased array
Externí odkaz:
http://arxiv.org/abs/2008.04464
Innovation in the ground and space-based instruments has taken us into a new age of spectroscopy, in which a large amount of stellar content is becoming available. So, automatic classification of stellar spectra became subjective in recent years due
Externí odkaz:
http://arxiv.org/abs/2006.14031