A four-hours long burst from Serpens X–1
SRON National Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands
2 Astronomical Institute, Utrecht University, PO Box 80000, 3508 TA Utrecht, The Netherlands
Corresponding author: R. Cornelisse, R.Cornelisse@sron.nl
Accepted: 8 November 2001
During a serendipitous observation of the BeppoSAX Wide Field Cameras, a very long type I X-ray burst was observed from the low mass X-ray binary Serpens X–1. The burst lasted for approximately 4 hours and had an exponential decay time of min (2–28 keV). The bolometric peak-luminosity is ( and the fluence ( erg. The first “normal" type I burst was observed 34 days after the superburst. This is in rough agreement with recent predictions for unstable carbon burning in a heavy element ocean.
Key words: accretion, accretion disks / binaries: close / stars: individual: Serpens X–1 / stars: neutron / X-rays: bursts
© ESO, 2002