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THE EVOLUTION OF ASTRONOMICAL OBSERVATORY DESIGN
Miguel Ángel Castro Tirado,Alberto J. Castro-Tirado 한국천문학회 2019 Journal of The Korean Astronomical Society Vol.52 No.4
This work addresses the development of the astronomical observatory all through history, from an architectural point of view, as a building in relation to the observing instruments and their functioning as a heterogeneous work center. We focused on 32 observatories (in the period 1259–2007) and carefully analyzed the architectures. Considering the impact of the construction itself or its facilities on the results of the research (thermal or structural stability, poor weather protection, turbulence, etc.), there is little attention paid to theories or studies of the architectural or construction aspects of the observatories. Therefore, this work aims to present a theoretical-critical contribution that, at least, invites the reflection of those involved in the development of astronomical observatories in the future.
The dark nature of GRB 130528A and its host galaxy
Jeong, S.,Castro-Tirado, A. J.,Bremer, M.,Winters, J. M.,Gorosabel, J.,Guziy, S.,Pandey, S. B.,Jelí,nek, M.,Sá,nchez-Ramí,rez, R.,Sokolov, Ilya V.,Orekhova, N. V.,Moskvitin, A. S.,Te Springer-Verlag 2014 Astronomy and astrophysics Vol.569 No.-
A multiwavelength analysis of a collection of short-duration GRBs observed between 2012 and 2015
Pandey, S B,Hu, Y,Castro-Tirado, Ao J,Pozanenko, A S,Sá,nchez-Ramí,rez, R,Gorosabel, J,Guziy, S,Jelinek, M,Tello, J C,Jeong, S,Oates, S R,Zhang, B-B,Mazaeva, E D,Volnova, A A,Minaev, P Yu Oxford University Press 2019 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.485 No.4
<B>Abstract</B><P>We investigate the prompt emission and the afterglow properties of short-duration gamma-ray burst (sGRB) 130603B and another eight sGRB events during 2012-2015, observed by several multiwavelength facilities including the Gran Canarias Telescope 10.4 m telescope. Prompt emission high energy data of the events were obtained by INTEGRAL-SPI-ACS, Swift-BAT, and Fermi-GBM satellites. The prompt emission data by INTEGRAL in the energy range of 0.1-10 MeV for sGRB 130603B, sGRB 140606A, sGRB 140930B, sGRB 141212A, and sGRB 151228A do not show any signature of the extended emission or precursor activity and their spectral and temporal properties are similar to those seen in case of other short bursts. For sGRB 130603B, our new afterglow photometric data constrain the pre-jet-break temporal decay due to denser temporal coverage. For sGRB 130603B, the afterglow light curve, containing both our new and previously published photometric data is broadly consistent with the ISM afterglow model. Modeling of the host galaxies of sGRB 130603B and sGRB 141212A using the LePHARE software supports a scenario in which the environment of the burst is undergoing moderate star formation activity. From the inclusion of our late-time data for eight other sGRBs we are able to: place tight constraints on the non-detection of the afterglow, host galaxy, or any underlying ‘kilonova’ emission. Our late-time afterglow observations of the sGRB 170817A/GW170817 are also discussed and compared with the sub-set of sGRBs.</P>
UFFO/Lomonosov: The Payload for the Observation of Early Photons from Gamma Ray Bursts
Park, I. H.,Panasyuk, M. I.,Reglero, V.,Chen, P.,Castro-Tirado, A. J.,Jeong, S.,Bogomolov, V.,Brandt, S.,Budtz-Jørgensen, C.,Chang, S.-H.,Chang, Y. Y.,Chen, C.-R.,Chen, C.-W.,Choi, H. S.,Connell, P.,E Springer-Verlag 2018 Space science reviews Vol.214 No.1
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>
Slewing mirror telescope of the UFFO-pathfinder: first report on performance in space
Gaikov, G.,Jeong, S.,Agaradahalli, V. G.,Park, I. H.,Budtz-Jørgensen, C.,Castro-Tirado, A. J.,Chen, P.,Jeong, H. M.,Kim, J. E.,Kim, M. B.,Kim, S. W.,Lee, J.,Leonov, V.,Nam, J. W.,Panasyuk, M. I.,Petro The Optical Society 2017 Optics express Vol.25 No.23
UBAT of UFFO/Lomonosov: The X-Ray Space Telescope to Observe Early Photons from Gamma-Ray Bursts
Jeong, S.,Panasyuk, M. I.,Reglero, V.,Connell, P.,Kim, M. B.,Lee, J.,Rodrigo, J. M.,Ripa, J.,Eyles, C.,Lim, H.,Gaikov, G.,Jeong, H.,Leonov, V.,Chen, P.,Castro-Tirado, A. J.,Nam, J. W.,Svertilov, S.,Ya Springer-Verlag 2018 Space science reviews Vol.214 No.1
Chang, Y.-Y.,Chen, C.R.,Chen, P.,Huang, J.-J.,Huang, M.A.,Liu, T.-C.,Nam, J.W.,Wang, M.-Z.,Bogomolov, V.,Brandt, S.,Budtz-Jørgensen, C.,Castro-Tirado, A.J.,Choi, H.S.,Connell, P.H.,Eyles, C.,Jeong, S. Elsevier 2015 Nuclear Instruments & Methods in Physics Research. Vol.771 No.-
<P><B>Abstract</B></P> <P>In this paper we present the Inverted-Conical light guide designed for optical crosstalk reduction in the scintillator-MAPMT assemblies. The research was motivated by the 30% crosstalk observed in <I>UFFO</I> X-ray telescope, <I>UBAT</I>, during the preliminary calibration with MAPMTs of 64 2.88 × 2.88 mm<SUP>2</SUP> pixels and identically gridded YSO crystal matrices. We began the study with the energy and crosstalk calibrations of the detector, then we constructed a GEANT4 simulation with the customized metallic film model as the MAPMT photocathode. The simulation reproduced more than 70% of the crosstalk and explained it as a consequence of the total reflection produced by the photocathode. The result indicated that the crosstalk mechanism could be a common case in most of the contact-assembled scintillation detectors. The concept of the Inverted-Conical light guide was to suppress the total reflection by contracting the incident angle of the scintillation. We optimized the design in the simulation and fabricated a test sample. The test sample reduced 52% crosstalk with a loss of 6% signal yield. The idea of the Inverted-Conical light guide can be adapted by scintillation detectors multi-pixel, imaging-purpose scintillation detectors such as the ultra-fast GRB observatory <I>UFFO-UBAT</I>, whose performances are sensitive to responding time, image resolution, and geometrical modifications.</P>
Prompt and Follow-up Multi-wavelength Observations of the GRB 161017A
Sadovnichy, V. A.,Panasyuk, M. I.,Svertilov, S. I.,Lipunov, V. M.,Bogomolov, V. V.,Gorbovskoy, E. S.,Bogomolov, A. V.,Castro-Tirado, A. J.,Gabovich, A.,Hu, Y.,Iyudin, A. F.,Jeong, H. M.,Jeong, S.,Kim, American Astronomical Society 2018 The Astrophysical journal Vol.861 No.1
<P>This paper presents data on the simultaneous and complementary observations of the gamma-ray burst (GRB) GRB 161017A for optical, X-ray, and gamma wavelengths obtained by the Russian multi-messenger Lomonosov space observatory and supplemented by additional data from the Swift satellite as well as the ground-based MASTER Global Robotic Net and the 10 m Gran Telescopio Canarias. Multifrequency spectra of this very powerful explosion indicate that it originated at a distance of 10 billion light years from Earth. Here, we present the results of the prompt, early, and afterglow optical observations. The light curves and spectra suggest that the prompt optical and high-energy emissions occur in the same region near the GRB source.</P>