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Observatoire Midi-Pyrénées |  |
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Observatoire Midi-Pyrénées | |
| HAL: hal-00009572, version 1 |
| arXiv: astro-ph/0109065 |
| ADS Bibliographic id: 2001A&A...378...76B |
| Detailed view |  Export this paper |
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| Astronomy and Astrophysics 378 (2001) 76-81 |
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| Limits on the early afterglow phase of gamma-ray burst sources from TAROT-1 |
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| M Boer 1J-L Atteia 1 |
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| (2001) |
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| The Telescope a Action Rapide pour les Objets Transitoires (TAROT-1) has as prime objective the observation of the prompt and delayed emission of cosmic gamma-ray bursts (GRBs). We have performed a search for optical emission from 6 GRBs detected by BATSE. The positioning error circle was fully covered within typically thirty minutes after the trigger. No detection of the early afterglow phase was made, and magnitude limits in the range of $ \\mathrm{m}_{\\mathrm{R}} = 13-15 $ were estimated using 20s exposures. These limits are compared to optical afterglow data obtained in later phases and the results are interpreted in terms of source distances. They correspond to a median redshift of z = 0.5. With HETE-2 and the planned instrument upgrade, TAROT-1 will be able to detect the early optical emission of GRBs up to a redshift of the order of 5. |
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| 1: | Centre d'étude spatiale des rayonnements (CESR) |
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CNRS : UMR5187 – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III |
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| 2: | Laboratoire d'Astrophysique de Marseille (LAM) |
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CNRS : UMR6110 – INSU – Université de Provence - Aix-Marseille I |
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| 3: | Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides (CASSIOPEE) |
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Université Nice Sophia Antipolis [UNS] – CNRS : UMR6202 – Observatoire de la Côte d'Azur – INSU |
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| Subject | : | Physics/Astrophysics/Cosmology and Extra-Galactic Astrophysics |
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| Fulltext link: |
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| http://fr.arXiv.org/abs/astro-ph/0109065 |
| hal-00009572, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00009572 | |
| oai:hal.archives-ouvertes.fr:hal-00009572 | |
| From: Import arXiv | |
| Submitted on: Thursday, 6 October 2005 13:04:48 | |
| Updated on: Thursday, 6 October 2005 13:04:48 | |
