Characterizing gamma-ray sources with HAL (HAWC Accelerated likelihood) and 3ML

Abstract:

The Multi-Mission Maximum Likelihood (3ML) framework enables multiwavelength data analysis in a statistically consistent way across a wide range of energies [1]. Combined with the 3ML affiliated astromodels package allows the arbitrary definition of one or more sources and their spectra in a flexible way that enables multisource fits to be performed with relative ease. 3ML has plugins for many instruments: HAWC, Fermi-LAT, Swift XRT, all OGIP compliant instruments, POLAR, VERITAS, INTEGRAL/SPI, and KONUS. These allow for an analysis to incorporate information from a wide range of energies so that the best understanding of a source or region in the sky can be reached. The use of 3ML has been ubiquitous within HAWC for several years. The HAWC plugin for 3ML was originally developed as an internal software tool that was largely inaccessible to those outside the collaboration. However the 3ML framework was heavily embedded in important HAWC analyses [2]. Giacomo Vianello was a HAWC member and wrote the original code for HAWC Accelerated Likelihood (HAL).

Año de publicación:

2022

Keywords:

Fuente:

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