2015A&A...578A..80W


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.10CET19:38:18

2015A&A...578A..80W - Astronomy and Astrophysics, volume 578A, 80-80 (2015/6-1)

Background subtraction and transient timing with Bayesian Blocks.

WORPEL H. and SCHWOPE A.D.

Abstract (from CDS):

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. We developed several modifications to the algorithm and tested them on a simulated XMM-Newton observation of a bursting and eclipsing object. We found that bursts can be found to good precision for almost all background-subtraction methods, but eclipse ingresses and egresses present problems for most methods. We found one method that recovered these events with precision comparable to the interval between individual photons, in which both source- and background-region photons are combined into a single list and weighted according to the exposure area. We also found that adjusting the Bayesian Blocks change points nearer to blocks with higher count rate removes a systematic bias towards blocks of low count rate.

Abstract Copyright:

Journal keyword(s): methods: numerical - binaries: eclipsing - X-rays: binaries

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* UY Vol LXB 07 48 33.71 -67 45 07.7 16.10 17.00 16.9 16.7 17.05 ~ 563 0
2 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 3293 3

    Equat.    Gal    SGal    Ecl

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2019.12.10-19:38:18

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