Journal: The Astrophysical Journal

  • Publication
    Jet Trails and Mach Cones: The Interaction of Microquasars with the Interstellar Medium
    A subset of microquasars exhibits high peculiar velocity with respect to the local standard of rest due to the kicks they receive when being born in supernovae...
  • Publication
    Jets from Subparsec to Kiloparsec Scales: A Physical Connection
    The Chandra discovery of bright X-ray emission from kiloparsec-scale jets allows insight into the physical parameters of the jet flow at large scales. At the...
  • Publication
    Jets in Coronal Holes: Hinode Observations and Three-dimensional Computer Modeling
    Recent observations of coronal hole areas with the XRT and EIS instruments on board the Hinode satellite have shown with unprecedented detail the launching of...
  • Publication
    Jets, Knots, and Tails in Planetary Nebulae: NGC 3918, K1-2, and Wray 17-1
    We analyze optical images and high-resolution, long-slit spectra of three planetary nebulae that possess collimated, low-ionization features. NGC 3918 is...
  • Publication
    JWST Constraints on the UV Luminosity Density at Cosmic Dawn: Implications for 21 cm Cosmology
    An unprecedented array of new observational capabilities are starting to yield key constraints on models of the epoch of first light in the Universe. In this...
  • Publication
    JWST Photometric Time-delay and Magnification Measurements for the Triply Imaged Type Ia "SN H0pe" at z = 1.78
    Supernova (SN) SN H0pe is a gravitationally lensed, triply imaged, Type Ia SN (SN Ia) discovered in James Webb Space Telescope imaging of the PLCK G165.7+67.0...
  • Publication
    Keck HIRES Spectroscopy of Extragalactic H II Regions: C and O Abundances from Recombination Lines
    We present very deep spectrophotometry of 14 bright extragalactic H II regions belonging to spiral, irregular, and blue compact galaxies. The data for 13...
  • Publication
    Keck NIRC Observations of Planetary-Mass Candidate Members in the σ Orionis Open Cluster
    We present K-band photometry and low-resolution near-infrared spectroscopy from 1.44 to 2.45 μm of isolated planetary-mass candidate members in the σ Orionis...
  • Publication
    Kelvin-Helmholtz Instability in Partially Ionized Compressible Plasmas
    The Kelvin-Helmholtz instability (KHI) has been observed in the solar atmosphere. Ion-neutral collisions may play a relevant role for the growth rate and...