Browsing UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II) by Title

Now showing items 1-20 of 892

    • 0FGL J1830.3+0617: A FERMI BLAZAR NEAR THE GALACTIC PLANE 

      Mirabal, N.; Halpern, J. P. (IOP, 2009-08-10)
      aas-2018.png iop-2016.png 0FGL J1830.3+0617: A FERMI BLAZAR NEAR THE GALACTIC PLANE N. Mirabal1,3 and J. P. Halpern2 Published 10 August 2009 • © 2009. The American Astronomical Society. All rights ...

    • A 100-Gb/s noncoherent silicon receiver for PDM-DBPSK/DQPSK signals 

      Klamkin, Jonathan; Gambini, Fabrizio; Faralli, Stefano; Malacarne, Antonio; Meloni, Gianluca; Berrettini, Gianluca; Contestabile, Giampiero; Potì, Luca (Optica, 2014)
      An integrated noncoherent silicon receiver for demodulation of 100-Gb/s polarization-division multiplexed differential quadrature phaseshift keying and polarization-division multiplexed differential binary phaseshift ...

    • 2 mm GISMO Observations of the Galactic Center. I. Dust Emission 

      Arendt, Richard G; Staguhn, Johannes; Dwek, Eli; Morris, Mark R; Yusef-Zadeh, Farhad; Benford, Dominic J; Kovacs, Attila; Gonzalez-Quiles, Junellie (The American Astronomical Society, 2019-11-01)
      The Central Molecular Zone (CMZ), covering the inner ∼ 1 ◦ of the Galactic plane has been mapped at 2 mm using the GISMO bolometric camera on the 30 m IRAM telescope. The 2100 resolution maps show abundant emission from ...

    • 2 mm GISMO Observations of the Galactic Center. II. A Nonthermal Filament in the Radio Arc and Compact Sources 

      Staguhn, Johannes; Arendt, Richard G; Dwek, Eli; Morris, Mark R; Yusef-Zadeh, Farhad; Benford, Dominic J; Kovacs, Attila; Gonzalez-Quiles, Junellie (The American Astronomical Society, 2019-11-01)
      We have used the Goddard IRAM 2-Millimeter Observer (GISMO) with the 30 m IRAM telescope to carry out a 2 mm survey of the Galaxy’s central molecular zone (CMZ). These observations detect thermal emission from cold ISM ...

    • The 2001 Superoutburst of WZ Sagittae 

      Patterson, Joseph; Masi, Gianluca; Richmond, Michael W.; Martin, Brian; Beshore, Edward; Skillman, David R.; Kemp, Jonathan; Vanmunster, Tonny; Rea, Robert; Allen, William; Davis, Stacey; Davis, Tracy; Henden, Arne A.; Starkey, Donn; Foote, Jerry; Oksanen, Arto; Cook, Lewis M.; Fried, Robert E.; Husar, Dieter; Novák, Rudolf; Campbell, Tut; Robertson, Jeff; Krajci, Thomas; Pavlenko, Elena; Mirabal, Nestor; Niarchos, Panos G.; Brettman, Orville; Walker, Stan (IOP, 2002-06-10)
      We report the results of a worldwide campaign to observe WZ Sagittae during its 2001 superoutburst. After a 23 yr slumber at V = 15.5, the star rose within 2 days to a peak brightness of 8.2, and showed a main eruption ...

    • The 2019 outburst of the 2005 classical nova V1047 Cen: a record breaking dwarf nova outburst or a new phenomenon? 

      Aydi, E.; Sokolovsky, K. V.; Bright, J. S.; Tremou, E.; Nyamai, M. M.; Evans, A.; Strader, J.; Chomiuk, L.; Myers, G.; Hambsch, F-J.; Page, K. L.; Buckley, D. A. H.; Woodward, C. E.; Walter, F. M.; Mróz, P.; Vallely, P. J.; Geballe, T. R.; Banerjee, D. P. K.; Gehrz, R. D.; Fender, R. P.; Gromadzki, M.; Kawash, A.; Knigge, C.; Mukai, K.; Munari, U.; Orio, M.; Ribeiro, V. A. R. M.; Sokoloski, J. L.; Starrfield, S.; Udalski, A.; Woudt, P. A. (2021-08-17)
      We present a detailed study of the 2019 outburst of the cataclysmic variable V1047 Cen, which hosted a classical nova eruption in 2005. The peculiar outburst occurred 14 years after the classical nova event, lasted for ...

    • 2021 Effective Area calibration of the Nuclear Spectroscopic Telescope ARray (NuSTAR) 

      Madsen, Kristin; Forster, Karl; Grefenstette, Brian W.; Harrison, Fiona A.; Miyasaka, Hiromasa (SPIE, 2021-10-21)
      We present here the updated calibration of The Nuclear Spectroscopic Telescope ARray NuSTAR, which was performed using data on the Crab accumulated over the last 9 years in orbit. The basis for this new calibration contains ...

    • The 21-cm signal from the Cosmic Dawn: metallicity dependence of high mass X-ray binaries 

      Kaur, Harman Deep; Qin, Yuxiang; Mesinger, Andrei; Pallottini, Andrea; Fragos, Tassos; Basu-Zych, Antara (2022-03-21)
      X-rays from High-Mass X-ray Binaries (HMXBs) are likely the main source of heating of the intergalactic medium (IGM) during Cosmic Dawn (CD), before the completion of reionization. This Epoch of Heating (EoH; z∼10−15) ...

    • 2FHL: THE SECOND CATALOG OF HARD FERMI-LAT SOURCES 

      Mirabal, N.; Buson, S.; et al. (IOP, 2016-01-14)
      We present a catalog of sources detected above 50 GeV by the Fermi-Large Area Telescope (LAT) in 80 months of data. The newly delivered Pass 8 event-level analysis allows the detection and characterization of sources in ...

    • 2MASS J10274572+0629104: the very short period young M6 dwarf binary system identified in K2 data 

      Paudel, Rishi R; Gizis, John E.; Burgasser, Adam J.; Hsu, Chih-Chun (Oxford University Press, 2019-04-13)
      We report the identification of a very low mass new binary system 2MASS J10274572+0629104, based on Kepler K2 photometry and Gaia DR2 astrometry. The K2 light curve is consistent with a beat pattern of two periodic ...

    • A 3 pc Scale Jet-driven Outflow from Sgr A* 

      Yusef-Zadeh, F.; Arendt, Richard; Bushouse, H.; Cotton, W.; Haggard, D.; Pound, M. W.; Roberts, D. A.; Royster, M.; Wardle, M. (IOP Science, 2012-09-21)
      The compact radio source Sgr A* is coincident with a 4 × 106 M☉ black hole at the dynamical center of the Galaxy and is surrounded by dense orbiting ionized and molecular gas. We present high-resolution radio continuum ...

    • A 3D Mixed Reality Visualization of Network Topology and Activity Results in Better Dyadic Cyber Team Communication and Cyber Situational Awareness 

      Ask, Torvald F.; Kullman, Kaur; Sütterlin, Stefan; Knox, Benjamin J.; Engel, Don; Lugo, Ricardo G. (2022-09-17)
      Cyber defense decision-making during cyber threat situations is based on human-to-human communication aiming to establish a shared cyber situational awareness. Previous studies suggested that communication inefficiencies ...

    • 3FGL DEMOGRAPHICS OUTSIDE THE GALACTIC PLANE USING SUPERVISED MACHINE LEARNING: PULSAR AND DARK MATTER SUBHALO INTERPRETATIONS 

      Mirabal, N.; Charles, E.; Ferrara, E. C.; Gonthier, P. L.; Harding, A. K.; Sánchez-Conde, M. A.; Thompson, D.J. (IOP, 2016-06-29)
      Nearly one-third of the sources listed in the Third Fermi Large Area Telescope (LAT) catalog (3FGL) remain unassociated. It is possible that predicted and even unanticipated gamma-ray source classes are present in these ...

    • 3FHL: The Third Catalog of Hard Fermi-LAT Sources 

      Mirabal, N.; et al. (IOP, 2017-09-27)
      We present a catalog of sources detected above 10 GeV by the Fermi Large Area Telescope (LAT) in the first 7 years of data using the Pass 8 event-level analysis. This is the Third Catalog of Hard Fermi-LAT Sources (3FHL), ...

    • A 50 mK test bench for demonstration of the readout chain of Athena/X-IFU 

      Castellani, Florent; Beaumont, Sophie; Pajot, François; Roudil, Gilles; Adams, Joseph; Sakai, Kazuhiro; Wakeham, Nicholas; et al (SPIE, 2022-08-31)
      The X-IFU (X-ray Integral Field Unit) onboard the large ESA mission Athena (Advanced Telescope for High ENergy Astrophysics), planned to be launched in the mid 2030s, will be a cryogenic X-ray imaging spectrometer operating ...

    • Accreting on the edge: a luminosity-dependent cyclotron line in the Be/X-ray Binary 2S 1553-542 accompanied by accretion regimes transition 

      Malacaria, C.; Bhargava, Y.; Coley, Joel B.; Ducci, L.; Pradhan, P.; Ballhausen, R.; Fuerst, F.; Islam, N.; Jaisawal, G. K.; Jenke, P.; Kretschmar, P.; Kreykenbohm, I.; Pottschmidt, Katja; Sokolova-Lapa, E.; Staubert, R.; Wilms, J.; Wilson-Hodge, C.A.; Wolff, Michael T. (AAS, 2022-03-15)
      Accreting X-ray pulsars (XRPs) undergo luminous X-ray outbursts during which the luminosity-dependent spectral and timing features of the neutron star's emission can be analyzed in detail, thus shedding light on the accretion ...

    • The Accretion History of AGN: A Newly Defined Population of Cold Quasars 

      Kirkpatrick, Allison; Urry, C. Megan; Brewster, Jason; Cooke, Kevin C.; Estrada, Michael; Glikman, Eilat; Hamblin, Kurt; Ananna, Tonima Tasnim; Carlile, Casey; Coleman, Brandon; Johnson, Jordan; Kartaltepe, Jeyhan S.; LaMassa, Stephanie M.; Marchesi, Stefano; Powell, Meredith; Sanders, Dave; Treister, Ezequiel; Turner, Tracey Jane (2019-08-15)
      Quasars are the most luminous of active galactic nuclei (AGN), and are perhaps responsible for quenching star formation in their hosts. The Stripe 82X catalog covers 31.3 deg² of the Stripe 82 field, of which the 15.6 deg² ...

    • Accurate Astrometry of 22 Southern Hemisphere Radio Sources 

      Fey, Alan L.; Ojha, Roopesh; Jauncey, David L.; Johnston, Kenneth J.; Reynolds, John E.; Lovell, James E. J.; Tzioumis, Anastasios K.; Quick, Jonathan F. H.; Nicolson, George D.; Ellingsen, Simon P.; McCulloch, Peter M.; Koyama, Yasuhiro (IOP, 2003-12-03)
      Milliarcsecond-accurate radio positions for 22 southern hemisphere extragalactic sources are reported. These positions are derived from Mark III very long baseline interferometry observations made between 2003 February and ...

    • Active Galactic Nuclei under the scrutiny of CTA 

      Sol, H.; Zech, A.; Boisson, C.; Almeida, U. Barres de; Biteau, J.; Contreras, J.-L.; Giebels, B.; Hassan, T.; Inoue, Y.; Katarzynsk, K.; Krawczynski, H.; Mirabal, N.; Poutanen, J.; Rieger, F.; Totani, T.; Benbow, W.; Cerruti, M.; Errando, M.; Fallon, L.; Pino, E. de Gouveia Dal; Hinton, J.A.; Inoue, S.; Lenain, J.-P.; Neronov, A.; Takahashi, K.; Takami, H.; White, R. (Elsevier, 2012-12-20)
      Active Galactic Nuclei (hereafter AGN) produce powerful outflows which offer excellent conditions for efficient particle acceleration in internal and external shocks, turbulence, and magnetic reconnection events. The jets ...

    • Advanced fabrication technologies for ultraprecise replicated mirrors for x-ray telescopes 

      Mimura, Hidekazu; Yamaguchi, Gota; Kume, Takehiro; Takeo, Yoko; Ito, Akinari; Matsuzawa, Yusuke; Saito, Takahiro; Hiraguri, Kentarou; Takehara, Yusuke; Takigawa, Ayumu; Tamura, Keisuke; Kanoh, Tetsuo; Tachibana, Kenji; Hashizume, Hirokazu; Mitsuishi, Ikuyuki (SPIE, 2020-12-13)
      For many years, Wolter mirrors have been used as imaging elements in X-ray telescopes. The shape error of Wolter mirrors fabricated by replicating the shape of a mandrel originates from the replication error in electroforming. ...