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201 to 210 of 266 Results
Seismically Detected Cratering on Mars: Enhanced Recent Impact Flux?Embargoed
Feb 6, 2024
Matthew Golombek, 2024, "Seismically Detected Cratering on Mars: Enhanced Recent Impact Flux?", https://doi.org/10.48577/jpl.HATULV, Science Advances, JPL Open Repository
Seismic observations of impacts on Mars indicate a higher impact flux than previously measured. Using six confirmed seismic impact detections near the NASA InSight lander and two distant large impacts, we calculate appropriate scalings to compare these rates with lunar-based chro...
Exomoon Phase Curves: Toroidal Exosphere Simulations of Exo-Ios Orbiting 8 Exoplanets in Alkali SpectroscopyEmbargoed
Feb 6, 2024
Apurva Oza, 2024, "Exomoon Phase Curves: Toroidal Exosphere Simulations of Exo-Ios Orbiting 8 Exoplanets in Alkali Spectroscopy", https://doi.org/10.48577/jpl.QZDVA2, Journal of Geophysical Research: Planets, JPL Open Repository
Toroidal atmospheres and exospheres characterized at exoplanets may be fueled by volcanically- active exomoons, often referred to as exo-Ios. We study the neutral outgassing and volatile evolution of a close-orbiting, evaporating satellite at eight candidate exoplanet-exomoon sys...
How to identify cell material in a single ice grain emitted from Enceladus or EuropaEmbargoed
Feb 5, 2024
Morgan Cable, 2024, "How to identify cell material in a single ice grain emitted from Enceladus or Europa", https://doi.org/10.48577/jpl.NGAFFP, Nature Astronomy, JPL Open Repository
Icy moons like Enceladus, and perhaps Europa, appear to express material sourced from their subsurface oceans into space via plumes of ice grains and gas. Cassini’s Cosmic Dust Analyzer (CDA) revealed that Enceladus’ ocean is salty, hydrothermally active, and contains organic com...
Orbital and physical characterization of asteroid Dimorphos following the DART impactEmbargoed
Feb 5, 2024
Shantanu Naidu, 2024, "Orbital and physical characterization of asteroid Dimorphos following the DART impact", https://doi.org/10.48577/jpl.XBGOBH, Planetary Science Journal, JPL Open Repository
The Double Asteroid Redirection Test (DART) mission impacted Dimorphos, the satellite of binary near-Earth asteroid (65803) Didymos, on 2022 September 26 UTC. We estimate the changes in the orbital and physical properties of the system due to the impact using ground-based photome...
The High Energy X-ray Probe (HEX-P): The Future of Hard X-ray Dual AGN ScienceEmbargoed
Feb 2, 2024
Daniel Stern, 2024, "The High Energy X-ray Probe (HEX-P): The Future of Hard X-ray Dual AGN Science", https://doi.org/10.48577/jpl.3AJU3R, Frontiers in Astronomy and Space Sciences, JPL Open Repository
A fundamental goal of modern-day astrophysics is to understand the connection between supermassive black hole (SMBH) growth and galaxy evolution. Merging galaxies offer one of the most dramatic channels for galaxy evolution known, capable of driving inflows of gas into galactic n...
GPS displacement dataset for study of elastic surface mass variationsEmbargoed
Feb 2, 2024
Athina Peidou, 2024, "GPS displacement dataset for study of elastic surface mass variations", https://doi.org/10.48577/jpl.AYDJ0A, Earth System Science Data, JPL Open Repository
Quantification of uncertainty in surface mass change signals derived from GPS measurements poses challenges, especially when dealing with large datasets with continental or global coverage. We present a new GPS station displacement dataset that reflect surface mass load signals a...
Sedimentology and Stratigraphy of the Shenandoah Formation, Western Fan, Jezero Crater, MarsEmbargoed
Feb 1, 2024
Kathryn Stack Morgan, 2024, "Sedimentology and Stratigraphy of the Shenandoah Formation, Western Fan, Jezero Crater, Mars", https://doi.org/10.48577/jpl.XFBTXK, Journal of Geophysical Research: Planets, JPL Open Repository
Sedimentary fans are key targets of exploration on Mars because they record the history of surface aqueous activity and habitability. The sedimentary fan extending from the Neretva Vallis breach of Jezero crater’s western rim is one of the Mars 2020 Perseverance rover’s main expl...
Organic input to Titan’s subsurface ocean through impact crateringEmbargoed
Jan 31, 2024
Michael Malaska, 2024, "Organic input to Titan’s subsurface ocean through impact cratering", https://doi.org/10.48577/jpl.CLXAF4, Astrobiology, JPL Open Repository
Titan has an organic-rich atmosphere and surface, with a subsurface, liquid water ocean that may represent a habitable environment. In this work, we determined the amount of organic material that can be delivered from Titan’s surface to its ocean through impact cratering. We assu...
Considerations for Detecting Organic Indicators of Metabolism on EnceladusEmbargoed
Jan 31, 2024
Laurie Barge, 2024, "Considerations for Detecting Organic Indicators of Metabolism on Enceladus", https://doi.org/10.48577/jpl.PKSKZQ, Astrobiology, JPL Open Repository
Enceladus is of interest to astrobiology and the search for life since it is thought to host active hydrothermal activity and habitable conditions. It is also possible that the organics detected on Enceladus may indicate an active prebiotic or biotic system; in particular, the co...
Assessment of length-of-day and universal time predictions based on the results of the Second Earth Orientation Parameters Prediction Comparison CampaignEmbargoed
Jan 31, 2024
Richard Gross, 2024, "Assessment of length-of-day and universal time predictions based on the results of the Second Earth Orientation Parameters Prediction Comparison Campaign", https://doi.org/10.48577/jpl.47SCRX, Journal of Geodesy, JPL Open Repository
Predicting Earth Orientation Parameters (EOP) is crucial for precise positioning and navigation both on the Earth's surface and in space. In recent years, many approaches have been developed to forecast EOP, incorporating observed EOP as well as information on the effective angul...
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