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New observations of black hole devouring a star reveal rapid disk formation(图)
New observations black hole devouring star rapid disk formation
2020/9/11
When a star passes too close to a supermassive black hole, tidal forces tear it apart, producing a bright flare of radiation as material from the star falls into the black hole. Astronomers study the ...
A Bayesian Surrogate Model for Rapid Time Series Analysis and Application to Exoplanet Observations
statistics: Bayesian model comparison model selection periodogram numerical methods
2011/10/14
We present a Bayesian surrogate model for the analysis of periodic or quasi-periodic time series data. We describe a computationally efficient implementation that enables Bayesian model comparison. We...
The Super Lithium-Rich Red Giant Rapid Rotator G0928+73.2600: A Case for Planet Accretion?
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/5
We present the discovery of a super lithium-rich K giant star, G0928+73.2600. This red giant (T_eff = 4885 K and log g = 2.65) is a fast rotator with a projected rotational velocity of 8.4 km/s and an...
Rapid Neutron Capture Process in Supernovae and Chemical Element Formation
Supernova—nucleosynthesis—abundance—r-process
2010/9/15
The rapid neutron capture process (r-process) is one of the major nucleosynthesis processes responsible for the synthesis of heavy nuclei beyond iron. Isotopes beyond Fe are most exclusively formed in...
Remarks on rapid vs. slow star formation。
Rapid keck spectroscopy of cataclysmic variables。
A Spectrographic Study of the Interacting Eclipsing Binary RY Scuti:An Episode in the Rapid Mass Loss Stage or a Protoplanetary Nebula?
Interacting Eclipsing Binary RY Scuti Rapid Mass Loss Stage Protoplanetary Nebula
2009/6/11
A Spectrographic Study of the Interacting Eclipsing Binary RY Scuti:An Episode in the Rapid Mass Loss Stage or a Protoplanetary Nebula?