An adaptive-binning method for generating constant-uncertainty/constant-significance light curves with Fermi-LAT data - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Astronomy and Astrophysics - A&A Year : 2012

An adaptive-binning method for generating constant-uncertainty/constant-significance light curves with Fermi-LAT data

B. Lott
L. Escande
  • Function : Author
S. Larsson
  • Function : Author

Abstract

Aims. We present a method enabling the creation of constant-uncertainty/constant-significance light curves with the data of the Fermi-Large Area Telescope (LAT). The adaptive-binning method enables more information to be encapsulated within the light curve than with the fixed-binning method. Although primarily developed for blazar studies, it can be applied to any sources. Methods. This method allows the starting and ending times of each interval to be calculated in a simple and quick way during a first step. The reported mean flux and spectral index (assuming the spectrum is a power-law distribution) in the interval are calculated via the standard LAT analysis during a second step. Results. The absence of major caveats associated with this method has been established by means of Monte-Carlo simulations. We present the performance of this method in determining duty cycles as well as power-density spectra relative to the traditional fixed-binning method.

Dates and versions

in2p3-00738848 , version 1 (05-10-2012)

Identifiers

Cite

B. Lott, L. Escande, S. Larsson, Jean Ballet. An adaptive-binning method for generating constant-uncertainty/constant-significance light curves with Fermi-LAT data. Astronomy and Astrophysics - A&A, 2012, 544, pp.12. ⟨10.1051/0004-6361/201218873⟩. ⟨in2p3-00738848⟩
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