Zobrazeno 1 - 10
of 312
pro vyhledávání: '"Impact phenomena"'
Autor:
Wenjin Liu, Qingming Zhang, Renrong Long, Jiankang Ren, Juncheng Li, Zizheng Gong, Qiang Wu, Siyuan Ren
Publikováno v:
Aerospace, Vol 11, Iss 8, p 621 (2024)
Rubble-pile asteroids may be the type of near-Earth object most likely to threaten Earth in a future collision event. Small-scale impact experiments and numerical simulations for large-scale impacts were conducted to clarify the size ratio of the bou
Externí odkaz:
https://doaj.org/article/e08a2698d8a246a49c7a94079088b82b
Autor:
E. Chiang
Publikováno v:
The Astrophysical Journal Letters, Vol 973, Iss 1, p L28 (2024)
Vaporized metal, silicates, and ices on the verge of recondensing into solid or liquid particles appear in many contexts: behind shocks, in impact ejecta, and within the atmospheres and outflows of stars, disks, planets, and minor bodies. We speculat
Externí odkaz:
https://doaj.org/article/a5dfcce986ba4d86abd186632a753545
Autor:
Kaiyi Dai, Xi-Zi Luo, Meng-Hua Zhu, Gareth S. Collins, Thomas Davison, Robert Luther, Kai Wünnemann
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 9, p 214 (2024)
Asteroids pose potential hazards to Earth. The recent NASA Double Asteroid Redirection Test mission successfully demonstrated the change of an asteroid’s orbit by a kinetic impactor. This study focuses on impact-induced vertical momentum transfer e
Externí odkaz:
https://doaj.org/article/795c3359810740b68b9257dbf8015fb0
Autor:
Lauren R. Schurmeier, Gwendolyn E. Brouwer, Jonathan P. Kay, Sarah A. Fagents, Angela G. Marusiak, Steven D. Vance
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 9, p 211 (2024)
Titan’s impact craters are hundreds of meters shallower than expected, compared to similar-sized craters on Ganymede. Only 90 crater candidates have been identified, the majority of which have low certainty of an impact origin. Many processes have
Externí odkaz:
https://doaj.org/article/d18feabbf9ae487790f9956c55a7c304
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 9, p 206 (2024)
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 categori
Externí odkaz:
https://doaj.org/article/6a046a5d488f4c5d978ce9cde10548b7
Autor:
Shannon M. MacKenzie, Alexandra Pontefract, R. Terik Daly, Jacob J. Buffo, Gordon R. Osinski, Christopher J. Cline II, Mark J. Cintala, Kathleen L. Craft, Mallory J. Kinczyk, Joshua Hedgepeth, Sarah M. Hörst, Abel Méndez, Ben K. D. Pearce, Angela M. Stickle, Steven D. Vance
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 8, p 176 (2024)
Evidence for the beneficial role of impacts in the creation of urable or habitable environments on Earth prompts the question of whether meteorite impacts could play a similar role at other potentially urable/habitable worlds like Enceladus, Europa,
Externí odkaz:
https://doaj.org/article/f9fd7c9d4c384a0b92f2970d944677b6
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 6, p 150 (2024)
Hydrodynamic codes (hydrocodes) are common tools for modeling hypervelocity impacts to provide insight into the physical phenomenon. Hydrocodes can simulate impacts from micrometer to kilometer spatial scales and reach impact velocities difficult to
Externí odkaz:
https://doaj.org/article/c2aff4a4f7e54d62919ea26c4a18280c
Autor:
Elizabeth A. Silber
Publikováno v:
The Astronomical Journal, Vol 168, Iss 1, p 17 (2024)
Among the various observational techniques used for the detection of large bolides on a global scale is a low-frequency sound known as infrasound. Infrasound, which is also one of the four sensing modalities used by the International Monitoring Syste
Externí odkaz:
https://doaj.org/article/5936fa4528264ccaa18a10f7c8a181d0
Autor:
Tomas Kohout, Maurizio Pajola, Assi-Johanna Soini, Alice Lucchetti, Arto Luttinen, Alexia Duchêne, Naomi Murdoch, Robert Luther, Nancy L. Chabot, Sabina D. Raducan, Paul Sánchez, Olivier S. Barnouin, Andrew S. Rivkin
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 5, p 128 (2024)
The ∼200 m s ^−1 impact of a single 400 kg Bjurböle L/LL ordinary chondrite meteorite onto sea ice resulted in the catastrophic disruption of the projectile. This resulted in a significant fraction of decimeter-sized fragments that exhibit power
Externí odkaz:
https://doaj.org/article/dbc706dec67c4543a3986fa9b8813513
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 5, p 114 (2024)
Impact-derived ejecta covers most of the lunar surface, originating from recent impacts through to the beginning of the geologic record. Despite how common ejecta is, accurate measurements of ejecta thickness are difficult to obtain, and existing est
Externí odkaz:
https://doaj.org/article/1a744c3ac634435d8d216072675d5cbb