Ultra-Fast Flash Observatory for observation of early photons from gamma ray bursts

Park, I. H.; Ahmad, S.; Barrillon, P.; Brandt, S.; Budtz-Jørgensen, Carl; Castro-Tirado, A. J.; Chen, P.; Choi, Yonghan; Connell, P.; Dagoret-Campagne, S.; Eyles, C. J.; Grossan, B.; Huang, M. A.; Jeong, S.; Jung, A.; Kim, J. E.; Kim, M. B.; Kim, S.-W.; Kim, Y. W.; Krasnov, A.S.; Lee, J.; Lim, H.; Linder, Eric V.; Liu, T.-C.; Lund, N.; Min, Kyoung Wook; Na, G. W.; Nam, J. W.; Panasyuk, M. I.; Řípa, J.; Reglero, V.; Rodrigo, J. M.; Smoot, George F.; Suh, J. E.; Свертилов, С. И.; Vedenkin, N.; Wang, M.-Z.; Yashin, I. V.

doi:10.1117/12.926104

Cited by 10 publications

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“…Deeper understanding of GRBs requires more statistics of GRBs, particularly of high-z GRBs, measurements of polarization, and a wider range of not only spectral coverage extending to sub-keV X-ray and infrared (IR) but also temporal coverage through rapid pointing of telescopes at GRBs. These observational capabilities are to be incorporated in future missions (Paul et al 2011;Roming et al 2012;Produit et al 2005;Park et al 2013). They are expected to enlarge the detection area and/or volume of X-rays and the aperture of UV/optical/IR telescopes, and improve photometric, temporal and spectral sensitivities as well.…”

Section: Introductionmentioning

confidence: 99%

“…The Ultra-Fast Flash Observatory (UFFO) was proposed to measure the UV/optical counterpart on second time scales (Park et al 2013) after the gamma ray trigger from GRBs by introducing very fast pointing of the narrow-FOV UV/optical telescope using a fast slewing mirror or mirror array (Park et al 2009). It provides a reliable method to lower the current response limit by one to two orders of magnitude in order to obtain a large statistically meaningful sample of GRB light curves including the rise phase for the first time.…”

Section: Introductionmentioning

confidence: 99%

“…It provides a reliable method to lower the current response limit by one to two orders of magnitude in order to obtain a large statistically meaningful sample of GRB light curves including the rise phase for the first time. The instrument idea and fabrication, and its physics potential were described in previous reports (Park et al 2013;Jeong et al 2013;Kim et al 2013;Nam et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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UFFO/Lomonosov: The Payload for the Observation of Early Photons from Gamma Ray Bursts

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The payload of the UFFO (Ultra-Fast Flash Observatory)-pathfinder now onboard the Lomonosov spacecraft (hereafter UFFO/Lomonosov) is a dedicated instrument for the observation of GRBs. Its primary aim is to capture the rise phase of the optical light curve, one of the least known aspects of GRBs. Fast response measurements of the optical emission of GRB will be made by a Slewing Mirror Telescope (SMT), a key instrument of the payload, which will open a new frontier in transient studies by probing the early optical rise of GRBs with a response time in seconds for the first time. The SMT employs a rapidly slewingThe Lomonosov Mission Edited

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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UFFO/Lomonosov: The Payload for the Observation of Early Photons from Gamma Ray Bursts

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“…Correction of the FoV is performed once per second. Figure 5 (bottom) shows the drift of the FoV over a one second interval (frames 1-15) and its compensation by the mirror system (frames [16][17][18][19][20]. Each succeeding 1-bit frame is shifted from the previous.…”

Section: Tracking Performance Toward Astrophysical Objectmentioning

confidence: 99%

“…The UFFO-pathfinder [15,16] is a pilot project, that was launched in April 2016 onboard the Lomonosov [17] satellite. Its key instrument, named the Slewing Mirror Telescope (SMT) [18,19], employs a rapidly moving motorized mirror (see Fig.…”

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Slewing mirror telescope of the UFFO-pathfinder: first report on performance in space

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Publication date: 2017 Document VersionPublisher's PDF, also known as Version of record Link back to DTU Orbit Citation (APA): Gaikov, G., Jeong, . S., Agaradahalli, V. G., Park, I. H., Budtz-Jørgensen, C., Castro-Tirado, A. J., ... . Slewing mirror telescope of the UFFO-pathfinder: first report on performance in space. Optics Express, 25(23), 29143-29154. DOI: 10.1364/OE.25.029143 Slewing mirror telescope of the UFFO-pathfinder: first report on performance in space G. GAIKOV, 1,2 S. JEONG, 1,2,3,11 V. G. AGARADAHALLI, 1 Physics, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, South Korea 2 Institute of Science and Technology in Space, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419 Technology and Science, Jawahar Nagar, Shamirpet Mandal, India * ilpark@skku.edu Abstract: To observe the early optical emissions from gamma ray bursts (GRBs), we built the Slew Mirror Telescope. It utilizes a 150 mm motorized mirror to redirect incoming photons from astrophysical objects within seconds and to track them as compensating satellite movements. The SMT is a major component of the UFFO-pathfinder payload, which was launched on April 28, 2016, onboard the Lomonosov satellite. For the first time, the slewing mirror system has been proven for the precision tracking of astrophysical objects during space operation. We confirmed that the SMT has 1.4 seconds of response time to the X-gamma-ray trigger, and is able to compensate for satellite drift and to track astrophysical objects with magnitudes from 7 to 18.

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UBAT of UFFO/Lomonosov: The X-Ray Space Telescope to Observe Early Photons from Gamma-Ray Bursts

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The Ultra-Fast Flash Observatory (UFFO) Burst Alert and Trigger Telescope (UBAT) has been designed and built for the localization of transient X-ray sources such as Gamma Ray Bursts (GRBs). As one of main instruments in the UFFO payload onboard the Lomonosov satellite (hereafter UFFO/Lomonosov), the UBAT's roles are to monitor the X-ray sky, to rapidly locate and track transient sources, and to trigger the slewing of a UV/optical telescope, namely Slewing Mirror Telescope (SMT). The SMT, a pioneering application of rapid slewing mirror technology has a line of sight parallel to the UBAT, allowing us to measure the early UV/optical GRB counterpart and study the extremely early moments of GRB evolution. To detect X-rays, the UBAT utilizes a 191.1 cm 2 scintillation detector composed of Yttrium Oxyorthosilicate (YSO) crystals, Multi-Anode Photomultiplier Tubes (MAPMTs), and associated electronics. To estimate a direction vector of a GRB source in its field of view, it employs the well-known coded aperture mask technique. All functions are written for implementation on a field programmable gate array to enable fast triggering and to run the device's imaging algorithms. The UFFO/Lomonosov satellite was launched on April 28, 2016, and is now collecting GRB observation data. In this study, we describe the UBAT's design, fabrication, integration, and performance as a GRB X-ray trigger and localization telescope, both on the ground and in space.

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Ultra-Fast Flash Observatory for observation of early photons from gamma ray bursts

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Cited by 10 publications

References 14 publications

UFFO/Lomonosov: The Payload for the Observation of Early Photons from Gamma Ray Bursts

UFFO/Lomonosov: The Payload for the Observation of Early Photons from Gamma Ray Bursts

Slewing mirror telescope of the UFFO-pathfinder: first report on performance in space

UBAT of UFFO/Lomonosov: The X-Ray Space Telescope to Observe Early Photons from Gamma-Ray Bursts

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