搜索结果: 1-15 共查到“天文学 model”相关记录143条 . 查询时间(0.305 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars:Tracing the Evolution of SMBHs and Stellar Objects in Galaxy Mergers: A Multi-mass Direct N-body Model
星系合并 SMBH 恒星物体演化 多质量 直接N体模型
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2023/11/13
Physicists create new model of ringing black holes(图)
振铃黑洞 新模型 引力波
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2023/5/17
Scientists develop the largest, most detailed model of the early universe to date(图)
早期宇宙模型 黎明女神 Thesan 辐射
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2023/6/9
A numerical model of cohesion in planetary rings
Planetary rings Saturn, Rings Rotational dynamics Tides, Solid body Ices, Mechanical properties Collisional physics
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2015/12/25
We present a numerical method that incorporates particle sticking in simulations using the N-body code pkdgrav to study motions in a local rotating frame, such as a patch of a planetary ring. Particle...
A steady-state model of NEA binaries formed by tidal disruption of gravitational aggregates
Asteroids dynamics Satellites of asteroids
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2015/12/25
We present results of a simulation of a steady-state binary near-Earth asteroid (NEA) population. This study combines previous work on tidal disruption of gravitational aggregates [Walsh, K.J., Richar...
Binary near-Earth asteroid formation:Rubble pile model of tidal disruptions
Asteroids Dynamics Rotational dynamics Tides solid body
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2015/12/25
We present numerical simulations of near-Earth asteroid (NEA) tidal disruption resulting in bound, mutually orbiting systems. Using a rubble pile model we have constrained the relative likelihoods for...
SEEING TRIPLE:NEW 3-D MODEL COULD SOLVE SUPERNOVA MYSTERY
NEW 3-D MODEL SUPERNOVA MYSTERY
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2015/8/4
Giant stars die a violent death. After a life of several million years, they collapse into themselves and then explode in what is known as a supernova.How these stars explode remains a mystery. Howeve...
New model of cosmic stickiness favors “Big Rip” demise of universe(图)
cosmic stickiness favors Big Rip demise of universe
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2015/7/13
The universe can be a very sticky place, but just how sticky is a matter of debate.That is because for decades cosmologists have had trouble reconciling the classic notion of viscosity based on the la...
Supernova Remnant Crossing a Density Jump: A Thin-Shell Model
kinematics dynamics
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2014/12/24
The environments of supernova explosions are often inhomogeneous, and there may be jumps in their density structure. We have developed a semianalytic model under the thin-shell approximation for super...
X-ray absorption by the low-redshift intergalactic medium: A numerical study of the Lambda cold dark matter model
theory intergalactic medium
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2014/12/24
Using a hydrodynamic simulation of a cold dark matter universe with a cosmological constant, we investigate the "X-ray forest" absorption imprinted on the spectra of background quasars by the interven...
XMM-Newton Spectra of Intermediate-Mass Black Hole Candidates: Application of a Monte Carlo Simulated Model
NGC 5408 NGC 628
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2014/12/24
We present a systematic spectral analysis of six ultraluminous X-ray sources (NGC 1313 X-1 and X-2, IC 342 X-1, Ho IX X-1, NGC 5408 X-1, and NGC 3628 X-1) observed with the XMM-Newton observatory. The...
Confronting the Superbubble Model with X-Ray Observations of 30 Doradus C
bubbles HII regions
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2014/12/24
We present an analysis of XMM-Newton observations of the superbubble 30 Dor C and compare the results with the predictions from the standard wind-blown bubble model. We find that the observed X-ray sp...
Non-equilibrium ionization model for stellar cluster winds and its application
NGC 3603 general
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2014/12/23
We have developed a self-consistent physical model for superstellar cluster winds based on combining a 1D steady-state adiabatic wind solution and a non-equilibrium ionization calculation. Comparing w...
Accretion, feedback and galaxy bimodality: a comparison of the GalICS semi-analytic model and cosmological SPH simulations
cooling fl ows evolution
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2014/12/23
We compare the galaxy population of a smoothed particle hydrodynamics (SPH) simulation to those predicted by the GalICS (Galaxies In Cosmological Simulations) N-body + semi-analytic model and a stripp...
A Bayesian approach to the semi-analytic model of galaxy formation: methodology
galaxy formation methodology
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2014/12/22
We believe that a wide range of physical processes conspire to shape the observed galaxy population but we remain unsure of their detailed interactions. The semi-analytic model (SAM) of galaxy formati...