Sky map of all 149 BeppoSAX detections
Sky map (in galactic coordinates) of all 149 BeppoSAX detections, showing gamma-ray bursts from the distant universe in red, stellar flares from our immediate vicinity in light blue, and unconfirmed gamma-ray bursts in orange. The distribution is uneven because the instrument’s exposure time is not uniform.

The database studied comes from the Wide Field Cameras, which were built by SRON in the 1990s and launched on the Italian-Dutch BeppoSAX satellite. The two cameras were active in space for six years and paved the way for determining the origin of gamma-ray bursts. Ever since they were first detected in the 1960s, their origin remained a mystery. It eventually turned out that massive stars emit most of these bursts as they collapse into neutron stars or black holes at the end of their lives.

The new study has nearly doubled the number of flaring stars in the BeppoSAX database.

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Publication

J. J. M. in‘t ZandC. GuidorziJ. HeiseL. AmatiE. KuulkersF. FronteraG. Gianfagna and L. Piro, ‘BeppoSAX-WFC catalog of fast X-ray transients’, Astronomy & Astrophysics

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