Now showing items 1-3 of 3

    • Applications of High-Resolution Observations of Millimeter Wavelengths 

      Rosenfeld, Katherine (2015-12-17)
      nterferometric observations at millimeter wavelengths provide a precious, detailed view of certain astrophysical objects. This thesis is composed of studies that both rely on and enable this technique to study the structure ...
    • First Detection of c-C3H2 in a Circumstellar Disk 

      Qi, Chunhua; Oberg, Karin; Wilner, David J.; Rosenfeld, Katherine Ann (IOP Publishing, 2013)
      We report the first detection of c-C3H2 in a circumstellar disk. The c-C3H2 J = 6-5 line (217.882 GHz) is detected and imaged through Atacama Large Millimeter Array (ALMA) Science Verification observations toward the disk ...
    • Resolved magnetic-field structure and variability near the event horizon of Sagittarius A 

      Johnson, Michael D.; Fish, V. L.; Doeleman, Sheperd S.; Marrone, D. P.; Plambeck, R. L.; Wardle, J. F. C.; Akiyama, K.; Asada, K.; Beaudoin, C.; Blackburn, Lindy; Blundell, Raymond; Bower, G. C.; Brinkerink, C.; Broderick, A. E.; Cappallo, R.; Chael, Andrew Alan; Crew, G. B.; Dexter, J.; Dexter, M.; Freund, R.; Friberg, P.; Gold, R.; Gurwell, M. A.; Ho, P. T. P.; Honma, M.; Inoue, M.; Kosowsky, Michael Steven; Krichbaum, T. P.; Lamb, J.; Loeb, Abraham; Lu, R.-S.; MacMahon, D.; McKinney, J. C.; Moran, James M.; Narayan, Ramesh; Primiani, Rurik A.; Psaltis, D.; Rogers, A. E. E.; Rosenfeld, Katherine Ann; SooHoo, J.; Tilanus, R. P. J.; Titus, M.; Vertatschitsch, L.; Weintroub, Jonathan; Wright, M.; Young, Ken Harbour; Zensus, J. A.; Ziurys, L. M. (American Association for the Advancement of Science (AAAS), 2015)
      Near a black hole, differential rotation of a magnetized accretion disk is thought to produce an instability that amplifies weak magnetic fields, driving accretion and outflow. These magnetic fields would naturally give ...