Results 21 to 30 of about 1,309,218 (220)
Sensors, 2023 A multi-exposure imaging approach proposed in earlier studies is used to increase star sensors’ attitude update rate by N times. Unfortunately, serious noises are also introduced in the star image due to multiple exposures.
Wenbo Yu, Hui Qu, Yong Zhang
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Modelling neutron star mountains [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT As the era of gravitational-wave astronomy has well and truly begun, gravitational radiation from rotating neutron stars remains elusive. Rapidly spinning neutron stars are the main targets for continuous-wave searches since, according to general relativity, provided they are asymmetrically deformed, they will emit gravitational
F Gittins, N Andersson, D I Jones
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Early-forming Massive Stars Suppress Star Formation and Hierarchical Cluster Assembly
The Astrophysical Journal, 2023 Feedback from massive stars plays an important role in the formation of star clusters. Whether a very massive star is born early or late in the cluster formation timeline has profound implications for the star cluster formation and assembly processes. We
Sean C. Lewis +10 more
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Modern Physics Letters A, 1995 The star-matrix models are difficult to solve due to the multiple powers of the Vandermonde determinants in the partition function. We apply to these models a modified Q-matrix aprpoach and we get results consistent with those obtained by other methods.
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PERAMALAN HARGA BITCOIN DENGAN METODE SMOOTH TRANSITION AUTOREGRESSIVE (STAR)
E-Jurnal Matematika, 2022 One of the spectacular advances in technology in the economic field is the cryptocurrency it created. The fluctuating price of Bitcoin, is widely used as a means of making profit.
I GEDE MAHA HENDRA PRATAMA +2 more
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Model Atmospheres of Be Stars [PDF]
Symposium - International Astronomical Union, 1982 The basic concept of what a Be star is we owe to Struve (1931). His proposal that these stars are rapidly rotating and have an extended, disc-like, circumstellar envelope is still the basis for all models of Be stars. Unfortunately, progress in understanding the dynamics of Be stars has been painfully slow, a consequence of the very complex nature of ...
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A new model for strange stars [PDF]
General Relativity and Gravitation, 2018 19 pages, 8 figures, 2 tables, major ...
Debabrata Deb +3 more
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Carbon star populations in systems with different metallicities: statistics in Local Group galaxies [PDF]
Mon.Not.Roy.Astron.Soc. 338 (2003) 572, 2002 We present evolutionary population synthesis models for the study of the cool and luminous intermediate age stellar populations in resolved galaxies with particular emphasis on carbon star populations. We study the effects of the star formation history, the age and the metallicity on the populations of intermediate mass stars.
arxiv +1 more source
The Physical Parameters of Four WC-type Wolf-Rayet Stars in the Large Magellanic Cloud: Evidence of Evolution [PDF]
, 2021 We present a spectral analysis of four LMC WC-type Wolf-Rayet (WR) stars (BAT99-8, BAT99-9, BAT99-11, and BAT99-52) to shed light on two evolutionary questions surrounding massive stars. The first is: are WO-type WR stars more oxygen enriched than the WC-type stars, indicating further chemical evolution, or are the strong high-excitation oxygen lines ...
arxiv +1 more source
ANALYTICAL MODELS FOR QUARK STARS [PDF]
International Journal of Modern Physics D, 2007 We find two new classes of exact solutions to the Einstein–Maxwell system of equations. The matter content satisfies a linear equation of state consistent with quark matter; a particular form of one of the gravitational potentials is specified to generate solutions.
Komathiraj, K., Maharaj, S.D.
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