Detection of the near-infrared counterpart of GRB 971214 3.2 hours after the gamma-ray event

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dc.creatorGorosabel, J.
dc.creatorCastro-Tirado, A. J.
dc.creatorWillott, C. J.
dc.creatorHippelein, H.
dc.creatorGreiner, J.
dc.creatorShlyapnikov, A.
dc.creatorGuziy, S.
dc.creatorCosta, E.
dc.creatorFeroci, M.
dc.creatorFrontera, F.
dc.creatorNicastro, L.
dc.creatorPalazzi, E.
dc.date1998-04-30
dc.date.accessioned2026-07-07T10:31:47Z
dc.date.available2026-07-07T10:31:47Z
dc.descriptionWe report the detection of the GRB 971214 counterpart in the near-infrared by means of two images in the K'-band taken at Calar Alto only ~3.5 and ~5 hours after the gamma-ray event. We detect the transient at K'=18.03+/-0.18 and K'=18.00+/-0.22 respectively. Our data seem to indicate the existence of a plateau with duration ~1.5 < T < 6.7 hours (between 3.5 and 10.2 hours after the high-energy event). Moreover the power-law decline should be steeper than the one given by the index ak'=0.45. There is also a change in the slope of the broad-band spectrum at some wavelength between the J and K' bands (possibly around the H-band).
dc.description5 pages with 3 encapsulated PostScript figures included. Uses Astronomy & Astrophysics LaTeX macros. Accepted for publication as a Letter in Astronomy & Astrophysics
dc.identifierhttps://arxiv.org/abs/astro-ph/9804331
dc.identifierhttp://arxiv.org/abs/astro-ph/9804331
dc.identifierAstron.Astrophys.335:L5-L8,1998
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/178536
dc.subjectAstrophysics
dc.titleDetection of the near-infrared counterpart of GRB 971214 3.2 hours after the gamma-ray event
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