Journal: The Astrophysical Journal

  • Publication
    Time Delay in QSO 0957+561 From 1984-1999 Optical Data
    Photometric optical data of QSO 0957+561 covering the period 1984-1999 are analyzed to discern between the two values of the time delay (417 and 424 days)...
  • Publication
    Time Evolution of Horizontal Subsurface Flows in the Sun
    A ring-diagram analysis technique has been applied to a region of the Sun of about 15 deg^2 area close to the disk center at dates chosen for several solar...
  • Publication
    Time Series of Solar Granulation Images. II. Evolution of Individual Granules
    The properties of the evolution of solar granulation have been studied using an 80 minute time series of high spatial resolution white-light images obtained...
  • Publication
    Time Series of Solar Granulation Images. III. Dynamics of Exploding Granules and Related Phenomena
    The evolution of exploding granules is studied by using a spatially as well as temporally highly resolved time series of white-light images of 80 minute...
  • Publication
    Time Variation of Kepler Transits Induced By Stellar Rotating Spots—a Way to Distinguish between Prograde and Retrograde Motion. I. Theory
    Some transiting planets discovered by the Kepler mission display transit timing variations (TTVs) induced by stellar spots that rotate on the visible hemisphere...
  • Publication
    Time Variation of the Electron Mass in the Early Universe and the Barrow-Magueijo Model
    We put limits on the time variation of the electron mass in the early universe using observational primordial abundances of D, 4He, and 7Li, recent data from...
  • Publication
    Time-domain Study of the Young Massive Cluster Westerlund 2 with the Hubble Space Telescope. I
    Time-domain studies of pre-main-sequence (PMS) stars have long been used to investigate star properties during their early evolutionary phases and to trace the...
  • Publication
    Timing and Spectral Properties of the Accreting Millisecond Pulsar SWIFT J1756.9-2508
    SWIFT J1756.9-2508 is one of the few accreting millisecond pulsars (AMPs) discovered to date. We report here the results of our analysis of its aperiodic X-ray...
  • Publication
    Timing the Evolution of the Galactic Disk with NGC 6791: An Open Cluster with Peculiar High-α Chemistry as Seen by APOGEE
    We utilize elemental-abundance information for Galactic red giant stars in five open clusters (NGC 7789, NGC 6819, M67, NGC 188, and NGC 6791) from the Apache...