A four-hours long burst from Serpens X-1

1); 2); E. Kuulkers (1; F. Verbunt (2); J. Heise (1) ((1) SRON National Institute for Space Research; (2) Utrecht University); J.J.M. in 't Zand (2; R. Cornelisse (1

arxiv: astro-ph/0111263 · v1 · submitted 2001-11-14 · 🌌 astro-ph

A four-hours long burst from Serpens X-1

R. Cornelisse (1 , 2) , E. Kuulkers (1 , J.J.M. in 't Zand (2 , 1) , F. Verbunt (2) , J. Heise (1) ((1) SRON National Institute for Space Research; (2) Utrecht University) This is my paper

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keywords burstlongobservedserpenstypex-rayagreementapproximately

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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 69+/-2 min (2-28 keV). The bolometric peak-luminosity is (1.6+/-0.2)x10^38 erg/s and the fluence (7.3+/-1.4)x10^41 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.

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