Browsing by Title

Now showing items 55816-55835 of 142658

    • Gravitational lensing as a probe of dark matter, the distance scale, and gravitational waves in the universe 

      Bar-Kana, Rennan (Massachusetts Institute of Technology, 1997)

    • Gravitational lensing of quasars by edge-on spiral galaxies 

      Wang, Emily P (Massachusetts Institute of Technology, 2007)
      In this thesis, I studied the lensed quasar CX2201-3201, which is lensed by an edge-on spiral galaxy. The unusually high tilt of the spiral galaxy provides us with a rare opportunity for mass modeling. In addition, the ...

    • Gravitational signature of Jupiter's internal dynamics 

      Kaspi, Yohai; Hubbard, William B.; Showman, Adam P.; Flierl, Glenn Richard (American Geophysical Union (AGU), 2010-01)
      Telescopic observations and space missions to Jupiter have provided vast information about Jupiter's cloud level winds, but the depth to which these winds penetrate has remained an ongoing mystery. Scheduled to be launched ...

    • Gravitational wave astronomy and cosmology 

      Hughes, Scott A (Elsevier, 2014-10)
      The first direct observation of gravitational waves’ action upon matter has recently been reported by the BICEP2 experiment. Advanced ground-based gravitational-wave detectors are being installed. They will soon be ...

    • Gravitational wave detection with advanced ground based detectors 

      Evans, Matthew J. (Springer US, 2014-10)
      There are great expectations for the world-wide network of gravitational wave detectors currently under construction in United States, Europe and Japan. These multi-kilometer interferometers are seeking to make the first ...

    • Gravitational wave detector with cosmological reach 

      Dwyer, Sheila Elizabeth; Sigg, Daniel; Ballmer, Stefan W.; Barsotti, Lisa; Mavalvala, Nergis; e.a. (American Physical Society, 2015-04)
      Twenty years ago, construction began on the Laser Interferometer Gravitational-wave Observatory (LIGO). Advanced LIGO, with a factor of 10 better design sensitivity than Initial LIGO, will begin taking data this year, and ...

    • A gravitational wave observatory operating beyond the quantum shot-noise limit 

      Barsotti, Lisa; Bodiya, Timothy P.; Corbitt, Thomas R; Donovan, Frederick J; Dwyer, S.; e.a. (Springer Nature America, Inc, 2011-09)
      Around the globe several observatories are seeking the first direct detection of gravitational waves (GWs). These waves are predicted by Einstein's general theory of relativity and are generated, for example, by black-hole ...

    • Gravitational wave tests of general relativity with the parameterized post-Einsteinian framework 

      Yunes, Nicolas; Cornish, N.; Sampson, Laura; Pretorius, Frans (American Physical Society (APS), 2011-09)
      Gravitational wave astronomy has tremendous potential for studying extreme astrophysical phenomena and exploring fundamental physics. The waves produced by binary black hole mergers will provide a pristine environment in ...

    • Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A 

      LIGO Scientific Collaboration; Virgo Collaboration; Aggarwal, Nancy; Barsotti, Lisa; Biscans, Sebastien; e.a. (American Astronomical Society, 2017-10)
      On 2017 August 17, the gravitational-wave event GW170817 was observed by the Advanced LIGO and Virgo detectors, and the gamma-ray burst (GRB) GRB 170817A was observed independently by the Fermi Gamma-ray Burst Monitor, and ...

    • Gravitational waves from known pulsars: results from the initial detector era 

      Barnum, Sam; Barsotti, Lisa; Bodiya, Timothy Paul; Donovan, Frederick J.; Essick, Reed Clasey; e.a. (IOP Publishing, 2014-04)
      We present the results of searches for gravitational waves from a large selection of pulsars using data from the most recent science runs (S6, VSR2 and VSR4) of the initial generation of interferometric gravitational wave ...

    • Gravitational waves from merging compact binaries 

      Hughes, Scott A (Annual Reviews, 2009-09)
      Largely motivated by the development of highly sensitive gravitational-wave detectors, our understanding of merging compact binaries and the gravitational waves they generate has improved dramatically in recent years. ...

    • Gravitational-wave astrophysics with effective-spin measurements: Asymmetries and selection biases 

      Zimmerman, Aaron; Chatziioannou, Katerina; Gerosa, Davide; Haster, Carl-Johan; Ng, Kwan Yeung; e.a. (American Physical Society, 2018-10)
      Gravitational waves emitted by coalescing compact objects carry information about the spin of the individual bodies. However, with present detectors only the mass-weighted combination of the components of the spin along ...

    • Gravitational-wave confusion background from cosmological compact binaries: Implications for future terrestrial detectors 

      Regimbau, T.; Hughes, Scott A (American Physical Society, 2009-03)
      Increasing the sensitivity of a gravitational-wave (GW) detector improves our ability to measure the characteristics of detected sources. It also increases the number of weak signals that contribute to the data. Because ...

    • Gravitational-wave Constraints on the Equatorial Ellipticity of Millisecond Pulsars 

      Unknown author (American Astronomical Society, 2020)
      We present a search for continuous gravitational waves from five radio pulsars, comprising three recycled pulsars (PSR J0437-4715, PSR J0711-6830, and PSR J0737-3039A) and two young pulsars: the Crab pulsar (J0534+2200) ...

    • Gravitational-wave Constraints on the Equatorial Ellipticity of Millisecond Pulsars 

      Barnum, Sam; Barsotti, Lisa; Biscans, Sebastien; Biscoveanu, Sylvia; Buikema, Aaron; e.a. (American Astronomical Society, 2020)
      We present a search for continuous gravitational waves from five radio pulsars, comprising three recycled pulsars (PSR J0437-4715, PSR J0711-6830, and PSR J0737-3039A) and two young pulsars: the Crab pulsar (J0534+2200) ...

    • A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo 

      Abbott, B. P.; Abbott, R.; Abbott, T. D.; Abraham, S.; Acernese, F.; e.a. (American Astronomical Society, 2021-03-01)
      This paper presents the gravitational-wave measurement of the Hubble constant (H0) using the detections from the first and second observing runs of the Advanced LIGO and Virgo detector network. The presence of the transient ...

    • A gravitational-wave standard siren measurement of the Hubble constant 

      Aggarwal, Nancy; Barsotti, Lisa; Biscans, Sebastien; Buikema, Aaron; Demos, Nicholas; e.a. (Springer Nature, 2017-10)
      On 17 August 2017, the Advanced LIGO and Virgo detectors observed the gravitational-wave event GW170817-a strong signal from the merger of a binary neutron-star system. Less than two seconds after the merger, a γ-ray burst ...

    • Gravitationally Driven Wicking for Enhanced Condensation Heat Transfer 

      Preston, Daniel John; Wilke, Kyle L.; Lu, Zhengmao; Cruz, Samuel Steven; Zhao, Yajing; e.a. (American Chemical Society (ACS), 2018-03)
      Vapor condensation is routinely used as an effective means of transferring heat or separating fluids. Filmwise condensation is prevalent in typical industrial-scale systems, where the condensed fluid forms a thin liquid ...

    • Gravitationally induced phase shift on a single photon 

      Hilweg, Christopher; Massa, Francesco; Walther, Philip; Chrusciel, Piotr T; Martynov, Denis; e.a. (IOP Publishing, 2017-03)
      The effect of the Earth's gravitational potential on a quantum wave function has only been observed for massive particles. In this paper we present a scheme to measure a gravitationally induced phase shift on a single ...

    • Gravitationally lensed image simulations for the study of the substructure in galaxy clusters 

      Peeples, Molly S (Massachusetts Institute of Technology, 2005)
      As gravitational lensing is susceptible to all gravitating matter-both baryonic and dark-it provides a potentially clean way to study the mass distribution of galaxy clusters. We are particularly interested in the substructure ...