Frédéric Daigne
Institut d'Astrophysique de Paris (Paris, France)
Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris
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| « Gamma-ray bursts » |
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Frédéric Daigne |
| Gamma-ray bursts (GRBs) are short but powerful flashes of gamma-rays emitted at cosmological distance. They are followed by a rapidly fading afterglow observed from the gamma-ray to the radio range. GRBs are associated to ultra-relativistic jets emitted by a compact stellar-mass source (black hole or magnetar), formed after the gravitational collapse of a massive star or the merger of two compact objects. I will summarize the most recent observations of gamma-ray bursts and their afterglows, and discuss our current physical understanding of these extreme phenomena. I will also discuss future challenges in GRB studies, especially in the context of the emerging multi-messenger astronomy. Finally, I will present the SVOM project, a Chinese-French mission with a significant implication from IAP, that is devoted to GRB studies and to the multi-wavelength observation of transient phenomena. |
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vendredi 13 mai 2016 - 11:00 Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |