Browsing ScholarWorks@UMBC by Title

Now showing items 1-20 of 4642

    • 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 ...

    • 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 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 ...

    • 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 ...

    • 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 ...

    • 3 Kinds of Nouns: Counting is Not Always the Issue 

      Nelson, John; Wowk, Tymofey (Originally published by:, 2012)

    • 32-year record-high surface melt in 2019/2020 on north George VI Ice Shelf, Antarctic Peninsula 

      Banwell, Alison F.; Datta, Rajashree Tri; Dell, Rebecca L.; Moussavi, Mahsa; Brucker, Ludovic; Picard, Ghislain; Shuman, Christopher A.; Stevens, Laura A. (Copernicus Publications, 2020-10-22)
      In the 2019/2020 austral summer, the surface melt duration and extent on the northern George VI Ice Shelf (GVIIS) was exceptional compared to the 31 previous summers of dramatically lower melt. This finding is based on ...

    • 3D Path-Following using MRAC on a Millimeter-Scale Spiral-Type Magnetic Robot 

      Zhao, Haoran; Leclerc, Julien; Feucht, Maria; Bailey, Olivia; Becker, Aaron T. (IEEE, 2020-01-24)
      This paper focuses on the 3D path-following of a spiral-type helical magnetic swimmer in a water-filled workspace. The swimmer has a diameter of 2.5 mm, a length of 6 mm, and is controlled by an external time-varying ...

    • A 3D-Printed, Modular, and Parallelized Microfluidic System with Customizable ECM Integration to Investigate the Roles of Basement Membrane Topography on Endothelial Cells 

      Jones, Curtis G.; Huang, Tianjiao; Chung, Jay H.; Chen, Chengpeng (2020-09-24)
      Because dysfunctions of endothelial cells are involved in many pathologies, in vitro endothelial cell models for pathophysiological and pharmaceutical studies have been a valuable research tool. Although numerous ...

    • 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), ...

    • 4 pillars of college success in science 

      Hrabowski, Freeman (TED Conferences, LLC, 2013-02)
      At age 12, Freeman Hrabowski marched with Martin Luther King. Now he's president of the University of Maryland, Baltimore County (UMBC), where he works to create an environment that helps under-represented students -- ...

    • 4 reasons gerrymandering is getting worse 

      Short, John Rennie (The Conversation, 2018-10-29)

    • 4 reasons gerrymandering is getting worse 

      Short, John Rennie (Raw Story Media, 2018-10-30)
      November’s midterm elections are some of the most eagerly awaited, closely watched and hyperpartisan for many years. But the results for many congressional House seats are already known because the election will occur at ...

    • 4 reasons gerrymandering is getting worse 

      Short, John Rennie (Salon, 2018-11-01)
      November’s midterm elections are some of the most eagerly awaited, closely watched and hyperpartisan for many years. But the results for many congressional House seats are already known because the election will occur at ...

    • 4 Reasons Why Americans Have Lost Trust in the Government 

      Short, John Rennie (Time, 2016-10-11)
      Elections normally decide who is to govern. This upcoming election is about the very legitimacy of the system. At the final presidential debate, Republican candidate Donald Trump made the remarkable statement that he might ...

    • A 4‐year zonal climatology of lower tropospheric CO₂ derived from ocean‐only Atmospheric Infrared Sounder observations 

      Strow, L. Larrabee; Hannon, Scott E. (American Geophysical Union, 2008-09-20)
      A 4‐year zonally averaged climatology of atmospheric CO₂, ocean only, between ±60° latitude has been derived from the Atmospheric Infrared Sounder (AIRS) radiances. Using only very clear fields of view, the CO₂ profile in ...

    • 5 math skills your child needs to get ready for kindergarten 

      Sonnenschein, Susan; Dowling, Rebecca; Metzger, Shari Renee (The Conversation, 2018-09-18)