Browsing Faculty of Arts and Sciences by Keyword "galaxy"

Now showing items 1-8 of 8

    • Can Weak Lensing Surveys Confirm BICEP2? 

      Chisari, Nora Elisa; Dvorkin, Cora; Schmidt, Fabian (American Physical Society (APS), 2014)
      The detection of B-modes in the cosmic microwave background (CMB) polarization by the BICEP2 experiment, if interpreted as evidence for a primordial gravitational wave background, has enormous ramifications for cosmology ...

    • Dust in Large Optical Surveys 

      Schlafly, Edward Ford (2012-08-03)
      We present results studying the distribution and properties of the diffuse dust in the Milky Way Galaxy using large optical surveys—specifically, the Sloan Digital Sky Survey (SDSS) and the Panoramic Survey Telescope and ...

    • The High-Density Ionized Gas in the Central Parsec of the Galaxy 

      Zhao, Jun-Hui; Blundell, Raymond; Moran, James M.; Downes, Dennis; Schuster, Karl F.; Marrone, Daniel P. (American Astronomical Society, 2010)
      We report a study of the \(H30\alpha\) line emission at 1.3 mm from the region around Sgr A* made with the Submillimeter Array at a resolution of 2'' over a field of 60'' (2 pc) and a velocity range of \(-360 to +345 km ...

    • Infall and Outflow of Molecular Gas in Sgr B2 

      Qin, Sheng‐Li; Zhao, Jun‐Hui; Moran, James M.; Marrone, Daniel P.; Patel, Nimesh A.; Wang, Jun‐Jie; Liu, Sheng‐Yuan; Kuan, Yi‐Jehng (American Astronomical Society, 2008)
      Observations of two \(H_2CO (3_{03}-2_{02} and 3_{21}-2_{20})\) lines and continuum emission at 1.3 mm toward Sgr B2(N) and Sgr B2(M) have been carried out with the SMA. The mosaic maps of Sgr B2(N) and Sgr B2(M) in both ...

    • The QUaD Galactic Plane Survey. I. Maps and Analysis of Diffuse Emission 

      Culverhouse, Thomas; Ade, Peter; Bock, James; Bowden, Melanie; Brown, Michael L.; Cahill, Gary; Castro, Patricia G.; Church, Sarah E.; Friedman, Robert; Ganga, Ken; Gear, Walter K.; Gupta, Sujata; Hinderks, James R.; Kovac, John M; Lange, Andrew E.; Leitch, Erik; Melhuish, Simon J.; Memari, Yasin; Murphy, J. Anthony; Orlando, Angiola; Schwarz, Robert; O'Sullivan, Creidhe; Piccirillo, Lucio; Pryke, Clement; Rajguru, Nutan; Rusholme, Ben; Taylor, Andrew N.; Thompson, Keith L.; Turner, Abigail H.; Wu, Ed Y. S.; Zemcov, Michael (IOP Publishing, 2010)
      We present a survey of ~800 deg\(^{2}\) of the galactic plane observed with the QUaD telescope. The primary products of the survey are maps of Stokes I, Q, and U parameters at 100 and 150 GHz, with spatial resolution of ...

    • Scientific Verification Of Faraday Rotation Modulators: Detection Of Diffuse Polarized Galactic Emission 

      Moyerman, S.; Bierman, E.; Ade, P. A. R.; Aiken, R.; Barkats, D.; Bischoff, Colin A.; Bock, J. J.; Chiang, H. C.; Dowell, C. D.; Duband, L.; Hivon, E. F.; Holzapfel, W. L.; Hristov, V. V.; Jones, W. C.; Kaufman, J.; Keating, B. G.; Kovac, John M; Kuo, C. L.; Leitch, E. M.; Mason, P. V.; Matsumura, T.; Nguyen, H. T.; Ponthieu, N.; Pryke, C.; Richter, S.; Rocha, G.; Sheehy, C.; Takahashi, Y. D.; Tolan, J. E.; Wollack, E.; Yoon, K. W. (American Astronomical Society, 2013)
      The design and performance of a wide bandwidth linear polarization modulator based on the Faraday effect is described. Faraday Rotation Modulators (FRMs) are solid-state polarization switches that are capable of modulation ...

    • Towards better interpretation of the small-scale structure of the Universe 

      Yuan, Sihan (2021-05-06)
      There is a trove of cosmological information in the structure of the Universe on small scales (1-20Mpc). Revealing this information is of increasing interest as we exhaust the constraining power of the large scale (~100Mpc). ...

    • An X‐Ray, Infrared, and Submillimeter Flare of Sagittarius A* 

      Marrone, D. P.; Baganoff, F. K.; Morris, M. R.; Moran, James M.; Ghez, A. M.; Hornstein, S. D.; Dowell, C. D.; Munoz, Diego Jose; Bautz, M. W.; Ricker, G. R.; Brandt, W. N.; Garmire, G. P.; Lu, J. R.; Matthews, K.; Zhao, J.‐H.; Rao, R.; Bower, G. C. (American Astronomical Society, 2008)
      Energetic flares are observed in the Galactic supermassive black hole Sagittarius A* from radio to X-ray wavelengths. On a few occasions, simultaneous flares have been detected in IR and X-ray observations, but clear ...