Zobrazeno 1 - 10
of 768
pro vyhledávání: '"Orbital evolution"'
Publikováno v:
Universe, Vol 10, Iss 9, p 374 (2024)
The distribution of period ratios for 580 known two-planet systems is apparently nonuniform, with several sharp peaks and troughs. In particular, the vicinity of the 2:1 commensurability seems to have a deficit of systems. Using Monte Carlo simulatio
Externí odkaz:
https://doaj.org/article/385a427386e14df2918f14fe922e11de
Autor:
Mikael Granvik, Kevin J. Walsh
Publikováno v:
The Astrophysical Journal Letters, Vol 960, Iss 2, p L9 (2024)
Numerical modeling has long suggested that gravitationally bound (or so-called rubble-pile) near-Earth asteroids (NEAs) can be destroyed by tidal forces during close and slow encounters with terrestrial planets. However, tidal disruptions of NEAs hav
Externí odkaz:
https://doaj.org/article/4398b5979849423585cdd173e33a6b1d
Publikováno v:
The Astrophysical Journal Letters, Vol 966, Iss 1, p L14 (2024)
Recent work suggests that inwardly propagating internal gravity waves (IGWs) within a star can be fully converted to outward magnetic waves if they encounter a sufficiently strong magnetic field. The resulting magnetic waves dissipate as they propaga
Externí odkaz:
https://doaj.org/article/31e16849cd1b43cb838892b747caefa7
Akademický článek
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Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 210 (2024)
Magnetic braking (MB) plays an important role in driving the evolution of low-mass X-ray binaries (LMXBs). The modified MB prescription, the convection and rotation boosted (CARB) model, is very successful in reproducing the detected mass-transfer ra
Externí odkaz:
https://doaj.org/article/5deae4b2fbe74fbca352fba1e3dc7d1f
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 10, p 226 (2024)
Images from the Voyager 2 mission revealed the small Uranian satellite Miranda to be a complex, dynamic world. This is exemplified by signs of recent geological activity, including an extensive fault system and the mysterious coronae. This has led to
Externí odkaz:
https://doaj.org/article/5ef9ccfcab874b94816b28fd801b2d9c
Publikováno v:
The Astronomical Journal, Vol 168, Iss 5, p 195 (2024)
Exoplanetary science is increasingly prioritizing efforts toward direct imaging of planetary systems, with emphasis on those that may enable the detection and characterization of potentially habitable exoplanets. The recent 2020 Astronomy and Astroph
Externí odkaz:
https://doaj.org/article/33f52b7881244060bb4b1d401bbb3637
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:
N. P. Hammond, G. C. Collins
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 9, p 200 (2024)
Neptune’s moon Triton has two remarkable attributes: its retrograde orbit suggests that it was captured from the Kuiper Belt, and Triton has one of the youngest surfaces of all the icy satellites in the solar system. Soon after capture, Triton expe
Externí odkaz:
https://doaj.org/article/3a4a69ac70f34c12959b293a3f049c44
Autor:
Wen-Cong Chen
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 38 (2024)
Recently, the first pulsating ultraluminous X-ray source M82 X-2 was reported to be experiencing a rapid orbital decay at a rate of $\dot{P}=-(5.69\pm 0.24)\times {10}^{-8}\,{\rm{s}}\,{{\rm{s}}}^{-1}$ based on 7 yr NuSTAR data. To account for the obs
Externí odkaz:
https://doaj.org/article/0cfb7ec9828c4e448238bc9697dbf2d5