搜索结果: 1-8 共查到“天体物理学 Bayesian”相关记录8条 . 查询时间(0.046 秒)
The enrichment history of the intracluster medium: a Bayesian approach
Galaxies:clusters:intraclustermedium-X-ray:galaxy clusters Methods:statistical-Galaxies:clusters:general-Cosmology:observation
2012/11/23
This work measures the evolution of the iron content in galaxy clusters by a rigorous analysis of the data of 130 clusters at 0.1ask is made difficult by a) the low signal-to-noise ratio...
Rotating Stars and Revolving Planets: Bayesian Exploration of the Pulsating Sky
Time series Poisson point processes Harmonic analysis Periodograms Experimental design Astronomy Pulsars Extrasolar planets
2011/10/20
I describe ongoing work on development of Bayesian methods for exploring periodically varying phenomena in astronomy, addressing two classes of sources: pulsars, and extrasolar planets (exoplanets). F...
Constraints on cosmic-ray propagation models from a global Bayesian analysis
astroparticle physics—diffusion—methods statistical—cosmic rays—ISM general—Galaxy: general
2010/11/9
Research in many areas of modern physics such as, e.g., indirect searches for dark matter and particle acceleration in SNR shocks, rely heavily on studies of cosmic rays (CRs) and associated diffuse e...
Mode width fitting with a simple bayesian approach. Application to CoRoT targets HD 181420 and HD 49933
statistics detection data analysis asteroseismology
2010/11/15
Aims. We investigate the asteroseismology of two solar-like targets as observed with the CoRoT satellite, with particular attention paid to the mode fitting. HD 181420 and HD 49933 are typical CoRoT s...
Revisiting the Hubble sequence in the SDSS DR7 spectroscopic sample: a publicly available bayesian automated classification
Cosmology and Extragalactic Astrophysics (astro-ph.CO) Instrumentation and Methods for Astrophysics (astro-ph.IM)
2011/1/5
We present an automated morphological classification in 4 types (E,S0,Sab,Scd) of ~700.000 galaxies from the SDSS DR7 spectroscopic sample based on support vector machines. The main new property of th...
Local non-Gaussianity in the Cosmic Microwave Background the Bayesian way
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/27
We introduce an exact Bayesian approach to search for non-Gaussianity of local type in Cosmic Microwave Background (CMB) radiation data. Using simulated CMB temperature maps, the newly developed techn...
A Bayesian analysis of the 27 highest energy cosmic rays detected by the Pierre Auger Observatory
High Energy Astrophysical Phenomena (astro-ph.HE) High Energy Physics - Phenomenology (hep-ph)
2010/12/24
It is possible that ultra-high energy cosmic rays (UHECRs) are generated by active galactic nuclei (AGNs), but there is currently no conclusive evidence for this hypothesis. Several reports of correla...
Comment on "Bayesian evidence: can we beat MultiNest using traditional MCMC methods", by Rutger van Haasteren (arXiv:0911.2150)
data analysis methods statistical
2010/3/18
In arXiv:0911.2150, Rutger van Haasteren seeks to criticize the nested sampling algorithm for Bayesian data analysis in general and its MultiNest implementation in particular. He introduces a new meth...