7-9 December 2016
Cochem (Mosel), Germany
Europe/Berlin timezone
Registration Nov 14th | Early bird payment Nov 30th

The Multi-Mission Maximum Likelihood framework (3ML)

Not scheduled
Cochem (Mosel), Germany

Cochem (Mosel), Germany

Kapuzinerkloster, Klosterberg 5, 56812 Cochem


Dr. Robert Lauer (University of New Mexico)


Astrophysical sources are now observed by many different instruments at different wavelengths, from radio to high-energy gamma-rays, with an unprecedented quality. Putting all these data together to form a coherent view, however, is a very difficult task, for example when performing a broadband fit of the energy spectrum of the source. Each instrument has its own data format, software and analysis procedure, which are difficult to combine. The Multi-Mission Maximum Likelihood framework (3ML) aims to solve this issue, providing a common framework which allows for a coherent modeling of sources using all the available data, independent of their origin. At the same time, thanks to its architecture based on plug-ins, 3ML uses the existing official software of each instrument for the corresponding data in a way which is transparent to the user. 3ML is based on the likelihood formalism, in which a model summarizing our knowledge about a particular region of the sky is convolved with the instrument response and compared to the corresponding data. The user can choose between a frequentist analysis, and a Bayesian analysis. Our implementation of these ideas is very flexible, allowing the study of point sources as well as extended sources with arbitrary spectra. We will review the problem we aim to solve, the 3ML concepts and its innovative potential.

Primary authors

Dr. Giacomo Vianello (Stanford University) Dr. Robert Lauer (University of New Mexico)


A Albert (LANL) C Rho (U. of Rochester) H Ayala (MTU) H Zhou (LANL) J M Burgess (KTH) J P Harding (LANL) Luigi Tibaldo (KIPAC/SLAC) Michelle Hui (NASA/MSFC) N Omodei (Stanford U.) P Younk (LANL) Segev BenZvi (U. of Rochester)

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