Small-scale variations in the radiating surface of the GRB 011211 jet

Simple item page
dc.creatorJakobsson, P.
dc.creatorHjorth, J.
dc.creatorRamirez-Ruiz, E.
dc.creatorKouveliotou, C.
dc.creatorPedersen, K.
dc.creatorFynbo, J. P. U.
dc.creatorGorosabel, J.
dc.creatorWatson, D.
dc.creatorJensen, B. L.
dc.creatorGrav, T.
dc.creatorHansen, M. W.
dc.creatorMichelsen, R.
dc.creatorAndersen, M. I.
dc.creatorWeidinger, M.
dc.creatorPedersen, H.
dc.date2004-01-29
dc.date.accessioned2026-07-07T02:12:04Z
dc.date.available2026-07-07T02:12:04Z
dc.descriptionWe report the discovery of the afterglow of the X-ray rich, long-duration gamma-ray burst GRB 011211 and present evidence for oscillatory behaviour in its early optical light curve. The time-scale of the fluctuations, ~1 hour, is much smaller than the time of the observations, ~12 hours from the onset of the gamma-ray burst. The character and strength of the fluctuations are unprecedented and are inconsistent with causally connected variations in the emission of a symmetric, relativistic blast wave, i.e. flux variations which are produced uniformly throughout the shell surface are ruled out. Therefore, the wiggles are the result of spherically asymmetric density or energy variations. Additionally, there is evidence for fluctuations in the X-ray afterglow light curve. If real, the resulting difference in the observed time of the peaks of the short-term variations at X-ray and optical frequencies, would demonstrate that the energy content across the jet-emitting surface is not uniform.
dc.description11 pages, 3 figures. Accepted for publication in New Astronomy
dc.identifierhttps://arxiv.org/abs/astro-ph/0401621
dc.identifierhttp://arxiv.org/abs/astro-ph/0401621
dc.identifierNew Astron. 9 (2004) 435-442
dc.identifierdoi:10.1016/j.newast.2004.01.007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/7325
dc.subjectAstrophysics
dc.titleSmall-scale variations in the radiating surface of the GRB 011211 jet
dc.typetext

Files

Collections

arXiv