# Background subtraction and transient timing with Bayesian Blocks

@article{Worpel2015BackgroundSA,
title={Background subtraction and transient timing with Bayesian Blocks},
author={Hauke Worpel and Axel Schwope},
journal={Astronomy and Astrophysics},
year={2015},
volume={578}
}
• Published 16 March 2015
• Physics
• Astronomy and Astrophysics
Aims. We aim to incorporate background subtraction into the Bayesian Blocks algorithm so that transient events can be timed accurately and precisely even in the presence of a substantial, rapidly variable background. Methods. We developed several modifications to the algorithm and tested them on a simulated XMM-Newton observation of a bursting and eclipsing object. Results. We found that bursts can be found to good precision for almost all background-subtraction methods, but eclipse ingresses…

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## References

SHOWING 1-10 OF 18 REFERENCES
On Spectral Evolution and Temporal Binning in Gamma-Ray Bursts
ABSTRACT The understanding of the prompt γ-ray spectra of gamma-ray bursts (GRBs) is ofgreat importance to correctly interpreting the physical mechanisms that produce theunderlying event as well as
X-ray background measurements with XMM-Newton EPIC
• Physics
• 2002
We discuss the methods used to compile a high signal-to-noise dataset representative of both the instrumental and cosmic background signal measured at high galactic latitude by the XMM-Newton EPIC
Study of the X-ray activity of Sagittarius A* during the 2011 XMM-Newton campaign
• Physics
• 2015
In Spring 2011 we observed Sgr A*, the supermassive black hole at the center of our Galaxy, with XMM-Newton with a total exposure of ~226 ks in coordination with the 1.3 mm VLBI. We have performed
XMM-Newton light curves of the low-mass X-ray binary EXO 0748–676: Dips, eclipses, and bursts
• Physics
• 2003
We present an analysis of XMM-Newton light curves of the dipping, bursting, and eclipsing low-mass X-ray binary EXO 0748-676, focusing on the variability on time scales of seconds to hours. The
ON DETECTING TRANSIENT PHENOMENA
Transient phenomena are interesting and potentially highly revealing of details about the processes under observation and study that could otherwise go unnoticed. It is therefore important to
STUDIES IN ASTRONOMICAL TIME SERIES ANALYSIS. VI. BAYESIAN BLOCK REPRESENTATIONS
• Computer Science
• 2013
A simple nonparametric modeling technique and an algorithm implementing it—an improved and generalized version of Bayesian Blocks—that finds the optimal segmentation of the data in the observation interval are presented.
A statistical analysis of X-ray variability in pre-main sequence objects of the Taurus molecular cloud
• Physics
• 2007
Context. This work is part of a systematic X-ray survey of the Taurus star forming complex with XMM-Newton. Aims. We study the time series of all X-ray sources associated with Taurus members, to
Promise of Bayesian Inference for Astrophysics
The "frequentist" approach to statistics, currently domi­ nating statistical practice in astrophysics, is compared to the historically older Bayesian approach, which is now growing in popularity in
On optimal and data based histograms
SUMMARY In this paper the formula for the optimal histogram bin width is derived which asymptotically minimizes the integrated mean squared error. Monte Carlo methods are used to verify the