The Ultra-Fast Flash Observatory’s space GRB mission and science

H. Lim, S. Ahmad, P. Barrillon, S. Blin-Bondil, Søren Brandt, Carl Budtz-Jørgensen, A. J. Castro-Tirado, P. Chen, H. S. Choi, Y. J. Choi, P. Connell, S. Dagoret-Campagne, C. De La Taille, C. Eyles, B. Grossan, I. Hermann, M.-H. A. Huang, S. Jeong, A. Jung, J. E. KimS. - W. Kim, Y. W. Kim, J. Lee, E. V. Linder, T.-C. Liu, Niels Lund, K. W. Min, G. W. Na, J. W. Nam, K. H. Nam, M. I. Panasyuk, I. H. Park, V. Reglero, J. Ripa, J. M. Rodrigo, G. F. Smoot, S. Svetilov, N. Vedenkin, I. Yashin

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


Abstract. The Ultra-Fast Flash Observatory (UFFO) is a space mission to detect the early moments of an explosion from Gamma-ray bursts (GRBs), thus enhancing our understanding of the GRB mechanism. It consists of the UFFO Burst & Trigger telescope (UBAT) for the recognition of GRB positions using hard X-ray from GRBs. It also contains the Slewing Mirror Telescope (SMT) for the fast detection of UV-optical photons from GRBs. It is designed to begin the UV-optical observations in less than a few seconds after the trigger. The UBAT is based on a coded-mask X-ray camera with a wide field of view (FOV) and is composed of the coded
mask, a hopper and a detector module. The SMT has a fast rotatable mirror which allows a fast UV-optical detection after the trigger. The telescope is a modified Ritchey-Chr´etien telescope with the aperture size of 10 cm diameter, and an image intensifier readout by CCD. The UFFO pathfinder is scheduled to launch into orbit on 2012 June by the Lomonosov spacecraft. It is a scaled-down version of UFFO in order to make the first systematic study of early UV/optical light curves, including the rise phase of GRBs. We expect UBAT to trigger ∼44 GRBs/yr and expect SMT to detect ∼10 GRBs/yr.
Original languageEnglish
Title of host publicationDeath of Massive Stars: Supernovae and Gamma-Ray Bursts : Proceedings IAU Symposium No. 279, 2012
EditorsP. Roming, N. Kawai, E. Pian
PublisherInternational Astronomical Union
Publication date2012
Publication statusPublished - 2012
SeriesInternational Astronomical Union. Proceedings of Symposia


  • Gamma rays: bursts
  • Gamma rays: Observations
  • Instrumentation: detectors


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