Now showing items 1-20 of 10814

    • The 04 – 10 September 2017 Sun–Earth Connection Events: Solar Flares, Coronal Mass Ejections/Magnetic Clouds, and Geomagnetic Storms 

      Wu, Chin-Chun; Liou, Kan; Lepping, Ronald P.; Hutting, Lynn (Springer Netherlands, 2019-08-23)
      In early September 2017, a series of solar flares and coronal mass ejections (CMEs) erupted from the Sun. The Cor2a coronagraph, a unit of the Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI), onboard ...

      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 ...
    • 10 Admissions Deans Who Are Shaping Their Field 

      Farrell, Elizabeth F.; Hoover, Eric (The Chronicle of Higher Education, 2007-04-27)
    • 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 ...
    • 150 years of the geography of innovation 

      Andrews, Michael J.; Whalley, Alexander (Elsevier, 2021-01-25)
      Innovation has long been seen as central to long-term regional growth. Due to the absence of comprehensive data on the geography of innovation covering long time periods, quantifying long-term innovation-development linkages ...
    • A 1652 treaty opens up the story of the first “Baltimoreans” 

      Shen, Fern (Baltimore Brew, 2019-12-10)
    • The 17 April 2021 widespread solar energetic particle event 

      Dresing, N.; Rodríguez-García, L.; Jebaraj, I. C.; Warmuth, A.; Krupar, Vratislav; Silva, Daniel da; et al (2023-03-20)
      Context. A complex and long-lasting solar eruption on 17 April 2021 produced a widespread Solar Energetic Particle (SEP) event that was observed by five longitudinally well-separated observers in the inner heliosphere ...
    • 17β-Estradiol (E2) may be involved in the mode of crustacean female sex hormone (CFSH) action in the blue crab, Callinectes sapidus 

      Wang, Tao; He, Ke; Blaney, Lee; Chung, J. Sook (Frontiers, 2022-07-25)
      17β-estradiol (E2) has been proved to control reproduction, sexual differentiation, and the development of the secondary sexual characteristics of vertebrate females. In decapod crustacean species, crustacean female ...
    • A 1D fluid model of the Centaurus A jet 

      Wykes, Sarka; Snios, Bradford T.; Nulsen, Paul E. J.; Kraft, Ralph P.; Birkinshaw, Mark; Hardcastle, Martin J.; Worrall, Diana M.; McDonald, Iain; Rejkuba, Marina; Jones, Thomas W.; Stark, David J.; Forman, William R.; Meyer, Eileen T.; Jones, Christine (2018-09-27)
      We implement a steady, one-dimensional flow model for the X-ray jet of Centaurus A in which entrainment of stellar mass loss is the primary cause of dissipation. Using over 260 ks of new and archival Chandra/ACIS data, we ...
    • 1E 1740.7-2942 (the Great Annihilator) enters a low-intensity state 

      Kuulkers, E.; Ferrigno, C.; Santo, M. Del; Bazzano, A.; Alfonso-Garzon, J.; Beckmann, V.; Bird, A. J.; Brandt, S.; Chenevez, J.; Courvoisier, T. J.-L.; Domingo, A.; Ebisawa, K.; Jonker, P. G.; Kretschmar, P.; Markwardt, C. B.; Oosterbroek, T.; Paizis, A.; Pottschmidt, Katja; Sanchez-Fernandez, C.; Wijnands, R. (The Astronomer's Telegram, 2012-10-09)
    • 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 ...
    • 20 years of change in tundra NDVI from coupled field and satellite observations 

      Huemmrich, Karl; Gamon, John; Campbell, Petya Entcheva; Mora, Marianna; Vargas Z, Sergio; Almanza, Brenda; Tweedie, Craig (IOP Publishing, 2023-08-17)
      In 2022 we resampled normalized difference vegetation index (NDVI) along a 100 m transect in tundra near Utqiagvik, AK that had been previously measured through the 2000–2002 growing seasons, providing an opportunity to ...
    • 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 ...

      Williams, Peter K. G.; Tomsick, John A.; Bodaghee, Arash; Bower, Geoffrey C.; Pooley, Guy G.; Pottschmidt, Katja; Rodriguez, Jérôme; Wilms, Jörn; Migliari, Simone; Trushkin, Sergei A. (IOP Publishing, 2011-05-05)
      In 2009, Cygnus X-3 (Cyg X-3) became the first microquasar to be detected in the GeV γ-ray regime, via the satellites Fermi and AGILE. The addition of this new band to the observational toolbox holds promise for building ...
    • 2012 Laird Fellow 

      Unknown author (University of Delaware, 2012-06-01)
      The prestigious fellowship honors the memory of George W. Laird, a UD mechanical engineering graduate who died in an accident at the age of 35. Given since 1997, it is bestowed upon candidates who exhibit character, ...
    • The 2013 FLEX—US Airborne Campaign at the Parker Tract Loblolly Pine Plantation in North Carolina, USA 

      Middleton, Elizabeth M.; Rascher, Uwe; Corp, Lawrence A.; Huemmrich, Karl; Cook, Bruce D.; Noormets, Asko; Schickling, Anke; Pinto, Francisco; Alonso, Luis; Damm, Alexander; Guanter, Luis; Colombo, Roberto; Campbell, Petya Entcheva; Landis, David R.; Zhang, Qingyuan; Rossini, Micol; Schuettemeyer, Dirk; Bianchi, Remo (MDPI, 2017-06-16)
      The first European Space Agency (ESA) and NASA collaboration in an airborne campaign to support ESA’s FLuorescence EXplorer (FLEX) mission was conducted in North Carolina, USA during September–October 2013 (FLEX-US 2013) ...
    • 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 AHLA Tax Issues for Health Care Organizations 

      Fine, Michael N.; Woodcock, Cynthia H. (2021-10)
    • 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 ...