Explanipedia

QSHS: an axion dark matter resonant search apparatus Open

A Alsulami, I. Bailey, G. Carosi, Gavin Chapman, B. Chakraborty , et al. · 2025

We describe a resonant cavity search apparatus for axion dark matter constructed by the quantum sensors for the hidden sector collaboration. The apparatus is configured to search for QCD axion dark matter, though also has the capability to…

Enceladus Water Plume Modeling Using DSMC Open

A. Mahieux, David Goldstein, Philip L. Varghese, L. M. Trafton, Ganna Portyankina , et al. · 2025

This study investigates the water plumes of Saturn's moon, Enceladus, using Direct Simulation Monte Carlo (DSMC) modeling to analyze venting dynamics and plume structures. Building on prior research, we employ a parametrized DSMC approach …

LixSiyOz coating for LiCoO2 cathode material using atomic layer deposition (ALD) Open

Orly Aminov, Amreen Bano, Ortal Shalev, M. E. Perry, Dan Thomas Major , et al. · 2025

With a high theoretical capacity of 274 mAh, LiCoO 2 (LCO) is commonly used as a cathode material in portable devices and different Li-ion batteries (LIBs) applications. However, its practical capacity is lower than the theoretical value d…

Dark matter search in DEAP-3600: status and prospects Open

Michela Lai, Amaudruz P.-A., Prabal Adhikari, M. Alpízar-Venegas, P. Amaudruz , et al. · 2024

DEAP-3600, with its 3.3 tonnes liquid argon target, is a dark matter direct detection experiment set at SNOLAB in Sudbury, Canada. Since 2019, the experiment has held the most stringent exclusion limit in argon for Weakly Interacting Massi…

Biosignature preparation for ocean worlds (BioPOW) instrument prototype Open

Korine A. Duval, T. B. Van Volkenburg, K. L. Craft, Chanel Person, John Harshman , et al. · 2023

In situ sampling missions to detect biosignatures on ocean worlds requires thorough sample preparation to manage the expected chemical complexity of such environments. Proposed instruments must be capable of automatic liquid sample handlin…

Report on scipost_202210_00019v1 Open

I. Bailey, B. Chakraborty, Gavin Chapman, E. J. Daw, John Gallop , et al. · 2022

In 2021 the Quantum Sensors for the Hidden Sector (QSHS) collaboration was founded in the UK and received funding to develop and demonstrate quantum devices with the potential to detect hidden sector particles in the µeV to 100 µeV mass wi…

The Formation of Terraces on Asteroid (101955) Bennu Open

O. S. Barnouin, M. G. Daly, J. A. Seabrook, Y. Zhang, Florian Thuillet , et al. · 2022

The surface of the rubble‐pile asteroid (101955) Bennu has been characterized in detail by the OSIRIS‐REx (Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer) mission. By examining global and local di…

Global geologic map of asteroid (101955) Bennu indicates heterogeneous resurfacing in the past 500,000 years Open

E. R. Jawin, T. J. McCoy, K. J. Walsh, H. C. Connolly, Ronald‐Louis Ballouz , et al. · 2022

Global geologic maps are useful tools for efficient interpretation of a planetary body, and they provide global context for the diversity and evolution of the surface. We used data acquired by the OSIRIS-REx spacecraft to create the first …

Locations of mapped craters on Bennu Open

E. R. Jawin, T. J. McCoy, K. J. Walsh, H. C. Connolly, Ronald‐Louis Ballouz , et al. · 2022

Central coordinates for all mapped craters on Bennu larger than 10 m in diameter.

Impact-crater ejecta on Bennu indicate a surface with very low strength Open

M. E. Perry, O. S. Barnouin, R. T. Daly, E. B. Bierhaus, Ronald‐Louis Ballouz , et al. · 2021

A planetary surface’s resistance to change is generally described as its “strength” (units of stress). The surface strength of small, rubble-pile asteroids, which consist of fragments of larger bodies that were collisionally disrupted, is …

Rotational states and shapes of Ryugu and Bennu: Implications for interior structure and strength Open

J. H. Roberts, O. S. Barnouin, M. G. Daly, K. J. Walsh, M. C. Nolan , et al. · 2021

Persephone: A Pluto-system Orbiter and Kuiper Belt Explorer Open

Carly Howett, S. J. Robbins, Bryan J. Holler, Amanda Hendrix, Karl B. Fielhauer , et al. · 2021

Persephone is a NASA concept mission study that addresses key questions raised by New Horizons’ encounters with Kuiper Belt objects (KBOs), with arguably the most important being, “Does Pluto have a subsurface ocean?” More broadly, Perseph…

Validation of Stereophotoclinometric Shape Models of Asteroid (101955) Bennu during the OSIRIS-REx Mission Open

M. Al Asad, L. Philpott, C. L. Johnson, O. S. Barnouin, E. E. Palmer , et al. · 2021

NASA’s OSIRIS-REx mission to asteroid (101955) Bennu relied on the production of real-time shape models for both spacecraft navigation and scientific analysis. The primary method of constructing shape models during the early phases of the …

Near-Earth Objects Open

M. C. Nolan, Patrick Michel, Flaviane Venditti, Nalin H. Samarasinha, Seiji Sugita , et al. · 2021

International audience

Ice Giants — The Return of the Rings Open

Hsiang‐Wen Hsu, A. H. Sulaiman, Hao Cao, Matthew M. Hedman, Omakshi Agiwal , et al. · 2021

Here we highlight recent advances in our knowledge about Saturn's ring system and bring forward the outstanding science issues that could be addressed by studying the ring systems of the ice giants.We focus on interactions between planetar…

The Morphometry of Impact Craters on Bennu Open

R. T. Daly, E. B. Bierhaus, O. S. Barnouin, M. G. Daly, J. A. Seabrook , et al. · 2020

Bennu is an ~500‐m‐diameter rubble‐pile asteroid that is the target of detailed study by the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS‐REx) mission. Here we use data from the OSIRIS‐R…

Hemispherical differences in the shape and topography of asteroid (101955) Bennu Open

M. G. Daly, O. S. Barnouin, J. A. Seabrook, J. H. Roberts, C. Dickinson , et al. · 2020

A lidar model of asteroid (101955) Bennu has a north-south asymmetry in shape and evidence of an early partial disruption.

Author Correction: Shape of (101955) Bennu indicative of a rubble pile with internal stiffness Open

O. S. Barnouin, M. G. Daly, E. E. Palmer, R. W. Gaskell, J. R. Weirich , et al. · 2020

Assessing stereophotoclinometry by modeling a physical wall representing asteroid Bennu Open

K. L. Craft, O. S. Barnouin, R. W. Gaskell, E. E. Palmer, J. R. Weirich , et al. · 2020

Evidence of Electron Density Enhancements in the Post‐Apoapsis Sector of Enceladus' Orbit Open

A. M. Persoon, W. S. Kŭrth, D. A. Gurnett, J. B. Groene, H. T. Smith , et al. · 2020

Enceladus' plume is the dominant source of neutrals and plasma in Saturn's magnetosphere. The plasma results from the ionization of icy particles and water vapor, which are vented into Saturn's inner magnetosphere through fissures in Encel…

Ice Giants – The Return of the RingsA Science White Paper for the Planetary Science and Astrobiology Decadal Survey 2023-2032 Open

Hsiang‐Wen Hsu, A. H. Sulaiman, Hao Cao, Matthew M. Hedman, Omakshi Agiwal , et al. · 2020

Here we highlight recent advances in our knowledge about Saturn's ring system and bring forward the outstanding science issues that could be addressed by studying the ring systems of the ice giants. We focus on interactions between planeta…

Cassini INMS constraints on the composition and latitudinal fractionation of Saturn ring rain material Open

Kelly E. Miller, J. H. Waite, R. Perryman, M. E. Perry, Alexis Bouquet , et al. · 2019

Plasma Transport in Saturn's Low‐Latitude Ionosphere: Cassini Data Open

T. E. Cravens, M. Morooka, A. R. Renzaglia, Luke Moore, J. H. Waite , et al. · 2019

In 2017 the Cassini Orbiter made the first in situ measurements of the upper atmosphere and ionosphere of Saturn. The Ion and Neutral Mass Spectrometer in its ion mode measured densities of light ion species (H + , H 2 + , H 3 + , and He +…

Publisher Correction: Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface Open

K. J. Walsh, E. R. Jawin, Ronald‐Louis Ballouz, O. S. Barnouin, E. B. Bierhaus , et al. · 2019

Shape of (101955) Bennu indicative of a rubble pile with internal stiffness Open

O. S. Barnouin, M. G. Daly, E. E. Palmer, R. W. Gaskell, J. R. Weirich , et al. · 2019

Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface Open

K. J. Walsh, E. R. Jawin, Ronald‐Louis Ballouz, O. S. Barnouin, E. B. Bierhaus , et al. · 2019

Shape of (101955) Bennu indicative of a rubble pile with internal stiffness Open

O. S. Barnouin, M. G. Daly, E. E. Palmer, R. W. Gaskell, J. R. Weirich , et al. · 2019

Saturn's Dusty Ionosphere Open

M. Morooka, Jan‐Erik Wahlund, Lina Hadid, A. I. Eriksson, N. J. T. Edberg , et al. · 2019

Measurements of electrons and ions in Saturn's ionosphere down to 1,500‐km altitudes as well as the ring crossing region above the ionosphere obtained by the Langmuir probe onboard the Cassini spacecraft are presented. Five nearly identica…

Thermal Structure and Composition of Saturn's Upper Atmosphere From Cassini/Ion Neutral Mass Spectrometer Measurements Open

R. V. Yelle, Joseph Serigano, Tommi Koskinen, Sarah M. Hörst, M. E. Perry , et al. · 2018

Analysis of measurements of the H 2 density in Saturn's equatorial thermosphere indicates temperatures from 340 to 370 K. The deepest measurements, obtained during Cassini's final plunge into the atmosphere, measure the thermospheric tempe…

Models of Saturn's Equatorial Ionosphere Based on In Situ Data From Cassini's Grand Finale Open

Luke Moore, T. E. Cravens, Ingo Mueller‐Wodarg, M. E. Perry, J. H. Waite , et al. · 2018

We present new models of Saturn's equatorial ionosphere based on the first in situ measurements of its upper atmosphere. The neutral spectrum measured by Cassini's Ion and Neutral Mass Spectrometer, which includes substantial methane, ammo…

M. E. Perry YOU? Author Swipe