Results 91 to 100 of about 50,958 (220)

The Acraman impact and its widespread ejecta, South Australia [PDF]

Discovery of a widespread horizon of shock-deformed volcaniclastic ejecta preserved in Late Proterozoic (approx. 600 Ma) shales in South Australia and its probable link to the Acraman impact structure in the Middle Proterozoic Gawler Range.
Gostin, V. A., Keays, R. R., Wallace, M. W.   +2 more
core   +1 more source

Simultaneous Detection of the Size and Velocity of the Largest Ejecta Particles with Velocities Exceeding 1 km s−1

The Planetary Science Journal
Impact ejecta with velocities exceeding the escape velocity of planetary bodies become meteorites and dust particles in interplanetary space. We present a new method that allows simultaneous measurement of the size and velocity of the largest high ...
Akiko M. Nakamura, Keita Nomura, Sunao Hasegawa   +2 more
doaj   +1 more source

Multiband Emission from Star–Disk Collisions and Implications for Quasiperiodic Eruptions

The Astrophysical Journal
We perform two-dimensional, multigroup radiation hydrodynamic simulations to explore the observational properties of a solar-like star colliding with an accretion disk around a supermassive black hole at a separation of ∼100 gravitational radii.
Xiaoshan Huang, Itai Linial, Yan-Fei Jiang   +2 more
doaj   +1 more source

Styles of ejecta emplacement under atmospheric conditions [PDF]

Laboratory experiments provide essential first-order constraints on processes affecting ballistic ejecta and styles of ejecta emplacement under different atmospheric environments at planetary scales.
Schultz, P. H.
core   +1 more source

Orbital Capture of Ejecta into Periodic Orbits around Binary Asteroid (65803) Didymos

The Planetary Science Journal
The successful impact of the Double Asteroid Redirection Test (DART) spacecraft on Dimorphos enabled the first-ever extensive observation of a postimpact ejecta tail from a binary asteroid system.
Xiaoyu Fu, Flavia Saveriano, Stefania Soldini, Fabio Ferrari, Derek C. Richardson, Masatoshi Hirabayashi, Alessandro Rossi, Eugene G. Fahnestock, Tony L. Farnham, Arnold Gucsik, Stravro L. Ivanovski, Martin Jutzi, Akos Kereszturi, Jian-Yang Li, Francesco Marzari, Colby C. Merrill, Fernando Moreno, Sabina D. Raducan, Juan Luis Rizos, Gonzalo Tancredi, Josep M. Trigo-Rodriguez, Kleomenis Tsiganis, Stephan Ulamec, Yang Yu, Yun Zhang, Nancy Chabot, Andrew Rivkin, Adriano Campo Bagatin, Patrick Michel   +28 more
doaj   +1 more source

Type Iax Supernovae as a Source of Iron-rich Silicate Dust

The Astrophysical Journal
We model the formation of dust in the ejecta of Type Iax supernovae (SNe), which is a low-luminosity subclass of Type Ia SNe. A nonequilibrium chemical kinetic approach is adopted to trace the synthesis of molecules, molecular clusters, and dust grains ...
Aman Kumar, Arkaprabha Sarangi
doaj   +1 more source

Impacts of hemispherical granular targets: Implications for global impacts [PDF]

As impact excavation diameters subtend a nontrivial fraction of a planetary body, both the excavation process and ejecta emplacement may depart form the classical description of impacts into a planar surface.
Crawford, D., Gault, D. E., Schultz, P. H.   +2 more
core   +1 more source

Radiative Transfer Modeling of Stripped-envelope Supernovae. I. A Grid for Ejecta Parameter Inference

The Astrophysical Journal
We present 1800 multiwavelength Type Ib/c supernovae light-curve models obtained by running the radiation transport code Sedona and varying the mass distribution, velocity profile, and abundance ejecta profiles of helium star progenitors.
S. Karthik Yadavalli, V. Ashley Villar, Abigail Polin, S. E. Woosley, Maria R. Drout, Miranda Pikus   +5 more
doaj   +1 more source

Delivery of DART Impact Ejecta to Mars and Earth: Opportunity for Meteor Observations

The Planetary Science Journal
NASA’s Double Asteroid Redirection Test (DART) and ESA’s Hera missions offer a unique opportunity to investigate the delivery of impact ejecta to other celestial bodies. We performed ejecta dynamical simulations using 3 million particles categorized into
Eloy Peña-Asensio, Michael Küppers, Josep M. Trigo-Rodríguez, Albert Rimola   +3 more
doaj   +1 more source

Ejecta Mass Estimates from the DART Impact Plume Inferred from LICIACube Images

The Planetary Science Journal
We report ejecta mass estimates produced by the Double Asteroid Redirection Test impact with Dimorphos, the secondary of the Didymos asteroid binary system.
Ramin Lolachi, David A. Glenar, Timothy J. Stubbs, Ludmilla Kolokolova, Olga Muñoz, Tony L. Farnham, Masatoshi Hirabayashi, Pedro H. Hasselmann, Vincenzo Della Corte, J. D. Prasanna Deshapriya, Elisabetta Dotto, Elena Mazzotta Epifani, Alessandro Rossi, Angelo Zinzi   +13 more
doaj   +1 more source