1 to 10 of 2,910 Results
May 30, 2024
Da Kuang, 2024, "Point positioning geocenter through LEO GPS tracking and its application in geophysics", https://doi.org/10.48577/jpl.WXON5J, GPS Solutions, JPL Open Repository
We introduce geocenter location parameters into the GPS tracking measurement model to represent the offset between the center of mass (CM) of the Earth system and the origin of the Terrestrial Reference Frame being used in the GPS-based precise orbit determination (POD) of lower... |
May 30, 2024
Mario Damiano, 2024, "LHS 1140 b is a potentially habitable water world", https://doi.org/10.48577/jpl.PF4QAZ, Astronomical Journal, JPL Open Repository
LHS 1140 b is a temperate planet orbiting in the habitable zone of its M4.5V dwarf host. Recently, it has been the object of multiple re-visits which have refined the nature of the planet. In particular, new ground observations have refined the LHS 1140 b mass, placing the planet... |
May 30, 2024
Catherine Clark, 2024, "Migration and Evolution of giant ExoPlanets (MEEP) I: Nine Newly Confirmed Hot Jupiters from the TESS Mission", https://doi.org/10.48577/jpl.HFBNWC, Astronomical Journal, JPL Open Repository
Hot Jupiters were many of the first exoplanets discovered in the 1990s, but in the decades since their discovery, the mysteries surrounding their origins remain. Here, we present nine new hot Jupiters (TOI-1855 b, TOI-2107 b, TOI-2368 b, TOI-3321 b, TOI-3894 b, TOI-3919 b, TOI-41... |
May 30, 2024
Cinzia Zuffada, 2024, "Forward Looking Reflections on GNSS-R", https://doi.org/10.48577/jpl.0EL0GE, Institute of Navigation, JPL Open Repository
It has now been about 30 years since concepts for utilization of reflected GPS signals for remote sensing of Earth surfaces was first introduced. Today there are scientific and commercial satellites operating in low Earth orbit (LEO) collecting data that is used for monitoring oc... |
May 30, 2024
Ian Fenty, 2024, "Improving climate models and projections using observations", https://doi.org/10.48577/jpl.VWWGJ4, Bulletin of the American Meteorological Society, JPL Open Repository
A three-day workshop took place from June 12 to 14, 2023, at MIT, Cambridge,Massachusetts, focusing on data assimilation (DA) and machine learning (ML) in the contextof Earth system reanalysis and climate model improvements.The workshop, organized 25 years after the inception of... |
May 29, 2024
Wei Zhang, 2024, "Monolithic optical resonator for high spectral purity laser and low-noise photonic millimeter-wave synthesis", https://doi.org/10.48577/jpl.OMI2HS, Nature Communications, JPL Open Repository
Optical resonators as indispensable tools in optical metrology usually benefit from an evacuated and highly isolated environment to achieve peak performance. Here, we demonstrate a monolithic Fabry-Perot (FP) resonator in ambient environment, characterized with $4.5$~cm$^3$ volum... |
May 29, 2024
Suzanne Smrekar, 2024, "Formation of Coronae 1 Topography and Fractures via Plume Buoyancy and Melting", https://doi.org/10.48577/jpl.ZQB4RW, Earth and Planetary Science Letters, JPL Open Repository
Coronae are volcanic-tectonic features seemingly unique to the surface of Venus. As such they offer potential insights into differences in geodynamic processes on Venus and Earth. Largely due to limitations in processing power and computational complexity, models of corona format... |
May 29, 2024
Daniel Stern, 2024, "NuSTAR Observations of Candidate Subparsec Binary Supermassive Black Holes", https://doi.org/10.48577/jpl.NQJCVA, Astrophysical Journal, JPL Open Repository
We present analysis of NuSTAR X-ray observations of three AGN that were identified as candidate subparsec binary supermassive black hole (SMBH) systems in the Catalina Real-Time Transient Survey based on apparent periodicity in their optical light curves. Simulations predict that... |
May 29, 2024
Nereida Rodriguez Alvarez, 2024, "Full Polarimetric GNSS-R Assessment of the Freeze and Thaw States of the Terrestrial Cryosphere", https://doi.org/10.48577/jpl.ZMAXEZ, Remote Sensing of Environment, JPL Open Repository
The shift between frozen and thawed conditions on theEarth's surface influences climate, hydrology, and ecology. Aprimary objective of the Soil Moisture Active Passive (SMAP)mission is to estimate the surface binary freeze/thaw (F/T) state forthe northern hemisphere above 45° N l... |
May 29, 2024
Suzanne Smrekar, 2024, "Constraints on corona formation from an analysis of topographic rims and fracture annuli", https://doi.org/10.48577/jpl.QG2Y6D, Earth and Planetary Science Letters, JPL Open Repository
Venusian coronae are circular to oblong features which are defined by their circumferential fracture annuli. Most coronae have a circumferential rim, which may or may not correlate spatially with the fracture annulus. Corona topographies are thought to evolve depending on their s... |
