| Thème(s) : |
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| Titre : |
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An adaptive-binning method for generating constant-uncertainty/constant-significance light curves with Fermi-LAT data |
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| Auteur : |
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B. Lott1, L. Escande1, S. Larsson, J. Ballet2 |
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| Laboratoire : |
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| équipe(s) de recherche : |
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GLAST |
| Résumé : |
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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. |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication
ou d'écriture : |
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2012 |
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| Nom du périodique : |
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| Astronomy and Astrophysics (Astron. Astrophys.) |
| Publisher |
EDP Sciences |
| ISSN |
0004-6361 (eISSN : 1432-0756) |
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| Volume : |
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544 |
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| Page/Article : |
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12 |
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| Mot(s)-clé(s) : |
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methods: data analysis |
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