Evidence for a late-time outburst of the X-ray afterglow of GB970508 from BeppoSAX

Simple item page
dc.creatorPiro, L.
dc.creatorAmati, L.
dc.creatorAntonelli, L. A.
dc.creatorButler, R. C.
dc.creatorCosta, E.
dc.creatorCusumano, G.
dc.creatorFeroci, M.
dc.creatorFrontera, F.
dc.creatorHeise, J.
dc.creatorZand, J. in' t
dc.creatorMolendi, S.
dc.creatorMuller, J.
dc.creatorNicastro, L.
dc.creatorOrlandini, M.
dc.creatorOwens, A.
dc.creatorParmar, A. N.
dc.creatorSoffitta, P.
dc.creatorTavani, M.
dc.date1997-10-30
dc.date1998-01-07
dc.date.accessioned2026-07-07T02:24:52Z
dc.date.available2026-07-07T02:24:52Z
dc.descriptionThe gamma-ray burst GB970508 was observed simultaneously by the Gamma Ray Burst Monitor (GRBM) and one of the X-ray Wide Field Cameras (WFC) aboard BeppoSAX. The latter provided a position within 1.9' radius. A series of follow-up observations with the Narrow Field Intruments (NFI) was then performed in a period from 6 hours to 6 days after the main event. A previously unknown source, which we associate with the afterglow of the GRB, was discovered in the error box. We find that, after the initial burst, X-ray emission is still present and decays as t^(-1.1) up to 6 times 10^4 s. This is followed by a burst of activity with a duration 10^5 s. The energy produced in this event is a substantial fraction of the total energy of the GRB, which means that the afterglow is not a remnant of the initial burst (the GRB) that fades away smoothly. Our results support the idea that the processes generating the GRB and its afterglow are the same.
dc.description5 pages, LaTeX, 4 postscript figures; A&A, accepted revised version
dc.identifierhttps://arxiv.org/abs/astro-ph/9710355
dc.identifierhttp://arxiv.org/abs/astro-ph/9710355
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/11720
dc.subjectAstrophysics
dc.titleEvidence for a late-time outburst of the X-ray afterglow of GB970508 from BeppoSAX
dc.typetext

Files

Collections

arXiv