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THE UFFO SLEWING MIRROR TELESCOPE FOR EARLY OPTICAL OBSERVATION FROM GAMMA RAY BURSTS
NAM, JIWOO,AHMAD, S.,AHN, K.,BARRILLON, P.,BRANDT, S.,BUDTZ-JØRGENSEN, C.,CASTRO-TIRADO, A. J.,CHANG, S.-H.,CHEN, C.-R.,CHEN, P.,CHOI, Y. J.,CONNELL, P.,DAGORET-CAMPAGNE, S.,EYLES, C.,GROSSAN, B.,HUAN World Scientific 2013 Modern physics letters A Vol.28 No.2
<P> While some space born observatories, such as SWIFT and FERMI, have been operating, early observation of optical after grow of GRBs is still remained as an unexplored region. The Ultra-Fast Flash Observatory (UFFO) project is a space observatory for optical follow-ups of GRBs, aiming to explore the first 60 seconds of GRBs optical emission. Using fast moving mirrors to redirect our optical path rather than slewing the entire spacecraft, UFFO is utilized to catch early optical emissions from GRB within 1 sec. We have developed the UFFO Pathfinder Telescope which is going to be on board of the Lomonosov satellite and launched in middle of 2012. We will discuss about scientific potentials of the UFFO project and present the payload development status, especially for Slewing Mirror Telescope which is the key instrument of the UFFO-pathfinder mission. </P>
EUSO-BALLOON a pathfinder for detecting UHECR's from the edge of space
von Ballmoos, P.,Dagoret, S.,Santangelo, A.,Adams, J.H.,Barrillon, P.,Bayer, J.,Bertaina, M.,Cafagna, F.,Casolino, M.,Distratis, G.,Dupieux, M.,Ebersoldt, A.,Ebisuzaki, T.,Gorodetzky, Ph.,Haungs, A.,J EDP Sciences 2013 The European Physical Journal Conferences Vol.53 No.-
Design and Construction of Detector Module for UFFO Burst Alert & Trigger Telescope
정애라,최지녕,최연주,정수민,김지은,김민빈,김석환,김예원,이직,임희진,민경욱,나고운,남지우,박일흥,Jung, Aera,Ahmad, Salleh,Barrillon, Pierre,Brandt, Soren,Budtz-Jorgensen, Carl,Castro-Tirado, Alberto J.,Chen, Pisin,Choi, Ji Nyeong,Choi, Yeon J 한국천문학회 2012 天文學會報 Vol.37 No.2
One of the key aspects of the upcoming Ultra-Fast Observatory (UFFO) Pathfinder for Gamma-Ray Bursts(GRBs) identification will be the UFFO Burst Alert & Trigger Telescope(UBAT), based on a novel space telescope technique. The UBAT consists of coded mask, hopper, and detector module(DM). The UBAT DM consists of YSO crystal arrays, multi-anode photo mulipliers, and readout electronics. We will present the design and construction of the UBAT DM, and the response of the UBAT DM to X-ray sources.
Performances of JEM-EUSO: angular reconstruction : The JEM-EUSO Collaboration
Adams Jr., J. H.,Ahmad, S.,Albert, J. -N.,Allard, D.,Anchordoqui, L.,Andreev, V.,Anzalone, A.,Arai, Y.,Asano, K.,Ave Pernas, M.,Baragatti, P.,Barrillon, P.,Batsch, T.,Bayer, J.,Bechini, R.,Belenguer, Springer-Verlag 2015 Experimental astronomy Vol.40 No.1
An evaluation of the exposure in nadir observation of the JEM-EUSO mission
Adams, J.H.,Ahmad, S.,Albert, J.N.,Allard, D.,Ambrosio, M.,Anchordoqui, L.,Anzalone, A.,Arai, Y.,Aramo, C.,Asano, K.,Ave, M.,Barrillon, P.,Batsch, T.,Bayer, J.,Belenguer, T.,Bellotti, R.,Berlind, A.A. North-Holland ; Elsevier Science Ltd 2013 Astroparticle physics Vol.44 No.-
We evaluate the exposure during nadir observations with JEM-EUSO, the Extreme Universe Space Observatory, on-board the Japanese Experiment Module of the International Space Station. Designed as a mission to explore the extreme energy Universe from space, JEM-EUSO will monitor the Earth's nighttime atmosphere to record the ultraviolet light from tracks generated by extensive air showers initiated by ultra-high energy cosmic rays. In the present work, we discuss the particularities of space-based observation and we compute the annual exposure in nadir observation. The results are based on studies of the expected trigger aperture and observational duty cycle, as well as, on the investigations of the effects of clouds and different types of background light. We show that the annual exposure is about one order of magnitude higher than those of the presently operating ground-based observatories.