Now showing items 1-20 of 51

    • CALET upper limits on GeV-energy gamma-ray burst emission 

      Cannady, Nicholas (2019-07-24)
      The CALorimetric Electron Telescope (CALET) was deployed on the International Space Station in October 2015 and has accumulated over three years of continuous data to date. The calorimeter (CAL) is sensitive to gamma rays ...
    • A COMPACT TWO-STEP LASER TIME-OF-FLIGHT MASS SPECTROMETER FOR IN SITU ANALYSIS OF PLANETARY SURFACES 

      Getty, Stephanie A.; Brinckerhoff, William B.; Cornish, Timothy J.; Grubisic, Andrej; Li, Xiang; Uckert, Kyle (2015-09-16)
    • A Decade of Gamma-Ray Bursts Observed by Fermi-LAT: The Second GRB Catalog 

      Ajello, M.; Arimoto, M.; Axelsson, M.; Baldini, L.; Barbiellini, G.; Bastieri, D.; Bellazzini, R.; Bhat, P. N.; Bissaldi, E.; Blandford, R. D.; Bonino, R.; Bonnell, J.; Bottacini, E.; Bregeon, J.; Bruel, P.; Buehler, R.; Cameron, R. A.; Caputo, R.; Caraveo, P. A.; Cavazzuti, E.; Chen, S.; Cheung, C. C.; Chiaro, G.; Ciprini, S.; Costantin, D.; Crnogorcevic, M.; Cutini, S.; Dainotti, M.; D’Ammando, F.; Luque, P. de la Torre; Palma, F. de; Desai, A.; Desiante, R.; Lalla, N. Di; Venere, L. Di; Dirirsa, F. Fana; Fegan, S. J.; Franckowiak, A.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Giglietto, N.; Giordano, F.; Giroletti, M.; Green, D.; Grenier, I. A.; Grove, J. E.; Guiriec, S.; Hays, E.; Hewitt, J. W.; Horan, D.; Jóhannesson, G.; Kocevski, D.; Kuss, M.; Latronico, L.; Li, J.; Longo, F.; Loparco, F.; Lovellette, M. N.; Lubrano, P.; Maldera, S.; Manfreda, A.; Martí-Devesa, G.; Mazziotta, M. N.; Mereu, I.; Meyer, M.; Michelson, P. F.; Mirabal, N.; Mitthumsiri, W.; Mizuno, T.; Monzani, M. E.; Moretti, E.; Morselli, A.; Moskalenko, I. V.; Negro, M.; Nuss, E.; Ohno, M.; Omodei, N.; Orienti, M.; Orlando, E.; Palatiello, M.; Paliya, V. S.; Paneque, D.; Persic, M.; Pesce-Rollins, M.; Petrosian, V.; Piron, F.; Poolakkil, S.; Poon, H.; Porter, T. A.; Principe, G.; Racusin, J. L.; Rainò, S.; Rando, R.; Razzano, M.; Razzaque, S.; Reimer, A.; Reimer, O.; Reposeur, T.; Ryde, F.; Serini, D.; Sgrò, C.; Siskind, E. J.; Sonbas, E.; Spandre, G.; Spinelli, P.; Suson, D. J.; Tajima, H.; Takahashi, M.; Tak, D.; Thayer, J. B.; Torres, D. F.; Troja, E.; Valverde, J.; Veres, P.; Vianello, G.; Kienlin, A. von; Wood, K.; Yassine, M.; Zhu, S.; Zimmer, S. (The American Astronomical Society, 2019-06-10)
      The Large Area Telescope (LAT) aboard the Fermi spacecraft routinely observes high-energy emission from gamma-ray bursts (GRBs). Here we present the second catalog of LAT-detected GRBs, covering the first 10 yr of operations, ...
    • A deep X-ray view of the bare AGN Ark 120 VI. Geometry of the hot corona from spectroscopic and polarization signatures 

      Marinucci, A.; Porquet, D.; Tamborra, F.; Bianchi, S.; Braito, V.; Lobban, A.; Marin, F.; Matt, G.; Middei, R.; Nardini, E.; Reeves, J.; Tortosa, A. (ESO, 2018-11-30)
      Context. The spectral shape of the hard X-ray continuum of active galactic nuclei (AGN) can be ascribed to inverse Compton scattering of optical/UV seed photons from the accretion disc by a hot corona of electrons. This ...
    • Delayed Shock-induced Dust Formation in the Dense Circumstellar Shell Surrounding the Type IIn Supernova SN 2010jl 

      Sarangi, Arkaprabha; Dwek, Eli; Arendt, Richard G. (IOP Science, 2018)
      The light curves of Type IIn supernovae are dominated by the radiative energy released through the interaction of the supernova shock waves with their dense circumstellar medium (CSM). The ultraluminous Type IIn supernova ...
    • Detection and reactivity of Titan tholins in liquid hydrocarbons containing polar compounds 

      Dzurilla, Katherine; Mvondo, Delphine Nna; Mège, Daniel; Chevrier, Vincent (EPSC, 2019-09)
      Tholins are complex organic materials produced via photolysis of methane and dinitrogen gases in Titan’s upper atmosphere. These long-chained hydrocarbons sediment to the moon surface and interact with liquid hydrocarbons ...
    • Detection of Superluminal Motion in the X-Ray Jet of M87 

      Snios, Bradford; Nulsen, Paul. E. J.; Kraft, Ralph P.; Cheung, C. C.; Meyer, Eileen T.; Forman, William R.; Jones, Christine; Murray, Stephen S. (The American Astronomical Society, 2019-06-26)
      Chandra HRC observations are investigated for evidence of proper motion and brightness changes in the X-ray jet of the nearby radio galaxy M87. Using images spanning 5 yr, proper motion is measured in the X-ray knot ...
    • Developing the Physical Understanding of Intermediate Polars: An X-Ray Study of TV Col and V2731 Oph 

      Oliveira, R. Lopes de; Mukai, K. (IOP Publishing, 2019-08-02)
      The X-rays in intermediate polars (IPs) originate in a compact region near the surface of a magnetic white dwarf (WD) and interact with the complex environment surrounding the emission region. Here we report a case study ...
    • Development of a Cherenkov Telescope for the Detection of Ultrahigh Energy Neutrinos with EUSO-SPB2 and POEMMA 

      Otte, A. Nepomuk; Gazda, Eliza; Judd, Eleanor; Krizmanic, John F.; Kutzenzov, Evgeny; Matamala, Oscar Romero; Reardon, Patrick J.; Wiencke, Lawrence (2019-07-20)
      The detection of astrophysical neutrinos by IceCube and the potential to constrain source models of ultra-high energy cosmic rays provide the motivation to develop instruments for the observation of neutrinos above 107 ...
    • Direct Measurement of the Cosmic-Ray Proton Spectrum from 50 GeV to 10 TeV with the Calorimetric Electron Telescope on the International Space Station 

      Adriani, O.; CALET Collaboration (American Physical Society, 2019-05-10)
      In this paper, we present the analysis and results of a direct measurement of the cosmic-ray proton spectrum with the CALET instrument onboard the International Space Station, including the detailed assessment of systematic ...
    • Energetic Particles of Cosmic Accelerators I: Galactic Accelerators 

      Venters, Tonia M.; Hamaguchi, Kenji; Brandt, Terri J.; Ajello, Marco; Blumer, Harsha; Briggs, Michael; Coppi, Paolo; D'Ammando, Filippo; Becker, Michaël De; Fields, Brian; Guiriec, Sylvain; Hewitt, John W.; Humensky, Brian; Hunter, Stanley D.; Li, Hui; Lien, Amy Y.; Longo, Francesco; Marcowith, Alexandre; McEnery, Julie; Ojha, Roopesh; Pavlidou, Vasiliki; Prescod-Weinstein, Chanda; Santander, Marcos; Tomsick, John A.; Wadiasingh, Zorawar; Walter, Roland (2019-03-11)
      The high-energy universe has revealed that energetic particles are ubiquitous in the cosmos and play a vital role in the cultivation of cosmic environments on all scales. Energetic particles in our own galaxy, galactic ...
    • Energetic Particles of Cosmic Accelerators II: Active Galactic Nuclei and Gamma-ray Bursts 

      Venters, Tonia M.; Guiriec, Sylvain; Lien, Amy Y.; Ajello, Marco; Brandt, Terri J.; Blumer, Harsha; Briggs, Michael; Coppi, Paolo; D'Ammando, Filippo; Fields, Brian; Finke, Justin; Fryer, Chris; Hamaguchi, Kenji; Harding, J. Patrick; Hewitt, John W.; Humensky, Brian; Hunter, Stanley D.; Li, Hui; Longo, Francesco; McEnery, Julie; Ojha, Roopesh; Pavlidou, Vasiliki; Petropoulou, Maria; Prescod-Weinstein, Chanda; Rani, Bindu; Santander, Marcos; Tomsick, John A.; Wadiasingh, Zorawar; Walter, Roland (2019-03-11)
      The high-energy universe has revealed that energetic particles are ubiquitous in the cosmos and play a vital role in the cultivation of cosmic environments on all scales. Though they play a key role in cultivating the ...
    • Ethane in Titan’s Stratosphere from Cassini CIRS Far- and Mid-infrared Spectra 

      Lombardo, Nicholas A.; Nixon, Conor A.; Sylvestre, Melody; Jennings, Donald E.; Teanby, Nicholas; Irwin, Patrick J. G.; Flasar, F. Michael (The American Astronomical Society, 2019-04-02)
      The Cassini Composite Infrared Spectrometer (CIRS) observed thermal emission in the far- and mid-infrared (from 10 to 1500 cm⁻¹), enabling spatiotemporal studies of ethane on Titan across the span of the Cassini mission ...
    • The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project 

      Porth, Oliver; Chatterjee, Koushik; Narayan, Ramesh (2019-04-11)
      Recent developments in compact object astrophysics, especially the discovery of merging neutron stars by LIGO, the imaging of the black hole in M87 by the Event Horizon Telescope (EHT) and high precision astrometry of the ...
    • Fabrication of a Hybrid Transition Edge Sensor Array for Lynx 

      Wassell, Edward; Adams, Joseph S.; Bandler, Simon R.; Chang, Meng-Ping; Chervenak, James A.; Datesman, Aaron M.; Eckart, Megan E.; Ewin, Audrey J.; Finkbeiner, Fred M.; Yoon Ha, Jong; Kelley, R.; Kilbourne, Caroline A.; Miniussi, Antoine R.; Porter, F.; Sadleir, John E.; Sakai, Kazuhiro; Smith, Stephen J.; Wakehan, Nicholas
    • Fabrication of monocrystalline silicon x-ray mirrors 

      Riveros, Raul E.; Biskach, Michael P.; Allgood, Kim D.; Kearney, John D.; Hlinka, Michal; Numata, Ai; Zhang, Dr. William W. (SPIE, 2019-09-09)
      Progress within the field of x-ray astronomy depends on astronomical x-ray observations of ever-increasing quality and speed. Fast and high-resolution x-ray observations over a broad spectral range promise amazing new ...
    • Flaring, Dust Formation, And Shocks In The Very Slow Nova ASASSN-17pf (LMCN 2017-11a) 

      Aydi, E.; Chomiuk, L.; Strader, J.; Swihart, S. J.; Bahramian, A.; Harvey, E. J.; Britt, C. T.; Buckley, D. A. H.; Chen, P.; Dage, K.; Darnley, M. J.; Dong, S.; Hambsch, F-J.; Holoien, T. W.-S.; Jha, S. W.; Kochanek, C. S.; Kuin, N. P. M.; Li, K. L.; Monard, L. A. G.; Mukai, K.; Page, K. L.; Prieto, J. L.; Richardson, N. D.; Shappee, B. J.; Shishkovsky, L.; Sokolovsky, K. V.; Stanek, K. Z.; Thompson, T. (2019-03-21)
      We present a detailed study of the 2017 eruption of the classical nova ASASSN-17pf (LMCN 2017-11a), which is located in the Large Magellanic Cloud, including data from AAVSO, ASAS-SN, SALT, SMARTS, SOAR, and the Neil Gehrels ...
    • Gamma-ray emission in radio galaxies under the VLBI scope 

      Angioni, R.; Ros, E.; Kadler, M.; Ojha, R.; Müller, C.; Edwards, P. G.; Burd, P. R.; Carpenter, B.; Dutka, M. S.; Gulyaev, S.; Hase, H.; Horiuchi, S.; Krauß, F.; Lovell, J. E. J.; Natusch, T.; Phillips, C.; Plötz, C.; Quick, J. F. H.; Rösch, F.; Schulz, R.; Stevens, J.; Tzioumis, A. K.; Weston, S.; Wilms, J; Zensus, J. A. (EDP Sciences, 2019-06-19)
      Aims. In the framework of the multi-wavelength and very long baseline interferometry (VLBI) monitoring program TANAMI (Tracking Active Nuclei with Austral Milliarcsecond Interferometry), we study the evolution of the ...
    • HCN-C₆H₆ co-condensed ice cloud in Titan’s stratosphere: Laboratory study of the CIRS-observed HASP cloud 

      Mvondo, Delphine Nna; Anderson, Carrie M; Samuelson, Robert E (EPSC, 2019-09)
      For thirteen years, the Cassini mission to explore Saturn and its icy moons has provided a large repository of data on Titan’s atmosphere. Ice clouds have been repeatedly observed in Titan's stratosphere by the Cassini ...
    • High-Energy Polarimetry - a new window to probe extreme physics in AGN jets 

      Rani, B.; Zhang, H.; Hunter, S. D.; Kislat, F.; Böttcher, M.; McEnery, J. E.; Thompson, D. J.; Giannios, D.; Guo, F.; Li, H.; Baring, M.; Agudo, I.; Buson, S.; Petropoulou, M.; Pavlidou, V.; Angelakis, E.; Myserlis, I.; Wadiasingh, Z.; Silva, R. M. Curado da; Kilian, P.; Guiriec, S.; Bozhilov, V. V.; Hodgson, J.; Antón, S.; Kazanas, D.; Coppi, P.; Venters, T.; Longo, F.; Bottacini, E.; Ojha, R.; Zhang, B.; Ciprini, S.; Moiseev, A.; Shrader, C. (2019-03-11)
      The constantly improving sensitivity of ground-based and space-borne observatories has made possible the detection of high-energy emission (X-rays and gamma-rays) from several thousands of extragalactic sources. Enormous ...