scispace - formally typeset
Search or ask a question
Topic

Trojan

About: Trojan is a research topic. Over the lifetime, 2028 publications have been published within this topic receiving 33209 citations.


Papers
More filters
Posted Content
TL;DR: In this article, the authors review ongoing efforts to identify occupants of mean motion resonances (MMRs) and collisional families in the Edgeworth-Kuiper belt.
Abstract: We review ongoing efforts to identify occupants of mean-motion resonances (MMRs) and collisional families in the Edgeworth-Kuiper belt. Direct integrations of trajectories of Kuiper belt objects (KBOs) reveal the 1:1 (Trojan), 5:4, 4:3, 3:2 (Plutino), 5:3, 7:4, 9:5, 2:1 (Twotino), and 5:2 MMRs to be inhabited. Apart from the Trojan, resonant KBOs typically have large orbital eccentricities and inclinations. The observed pattern of resonance occupation is consistent with resonant capture and adiabatic excitation by a migratory Neptune; however, the dynamically cold initial conditions prior to resonance sweeping that are typically assumed by migration simulations are probably inadequate. Given the dynamically hot residents of the 5:2 MMR and the substantial inclinations observed in all exterior MMRs, a fraction of the primordial belt was likely dynamically pre-heated prior to resonance sweeping. A pre-heated population may have arisen as Neptune gravitationally scattered objects into trans-Neptunian space. The spatial distribution of Twotinos offers a unique diagnostic of Neptune's migration history. The Neptunian Trojan population may rival the Jovian Trojan population, and the former's existence is argued to rule out violent orbital histories for Neptune. Finally, lowest-order secular theory is applied to several hundred non-resonant KBOs with well-measured orbits to update proposals of collisional families. No convincing family is detected.

13 citations

Journal ArticleDOI
TL;DR: In this paper, a numerical survey of Trojan asteroids is presented, focusing on comparing results about libration properties to theory, using the enlarged database of information about Trojans from the Minor Planet Center Orbital Database (MPCORB), as well as the Mercury integrator package developed by Chambers [1999] to summarize their properties as now known.

13 citations

Patent
11 Aug 2010
TL;DR: Wang et al. as mentioned in this paper proposed a simulated webpage Trojan detection method based on an ActiveX component, which can simulate a plug-in in which a bug may exist, more attack behaviors of the webpage Trojan can be triggered, and the attack behaviors in an activeX component invoking layer of the web Trojan can also be obtained.
Abstract: The invention discloses a simulated webpage Trojan detecting method based on an ActiveX component, comprising the following steps: (1) build an ActiveX component M, an object instance m of the ActiveX component M is used for simulating a component N which is missed in a target webpage; (2) write a dynamic link library to hook an API which is in charge of creating the component M in a WINDOWS system, record the corresponding relationship between the entry address of the object instance m of the component M and the component name of the component N; (3) invoke a browser to browse the target webpage, when the target webpage requests to create the missed component N, record the component name, functions in the component and parameter information which are visited by the target webpage to a log file by the object instance m; (4) analyze the log file, judge whether the target webpage is a webpage Trojan or not. The simulated webpage Trojan detecting method based on the ActiveX component can simulate a plug-in in which a bug may exists, more attack behaviors of the webpage Trojan can be triggered, and the attack behaviors in an ActiveX component invoking layer of the webpage Trojan can be obtained.

13 citations

Journal ArticleDOI
TL;DR: In this paper, the authors used observational uncertainties in the positions and motions of solar-system bodies to set upper limits on the relative difference Δ between gravitational and inertial mass for each body.
Abstract: Most attempts to unify general relativity with the standard model of particle physics predict violations of the equivalence principle associated in some way with the composition of the test masses. We test this idea by using observational uncertainties in the positions and motions of solar-system bodies to set upper limits on the relative difference Δ between gravitational and inertial mass for each body. For suitable pairs of objects, it is possible to constrain three different linear combinations of Δ using Kepler's third law, the migration of stable Lagrange points, and orbital polarization (the Nordtvedt effect). Limits of order 10−10–10−6 on Δ for individual bodies can then be derived from planetary and lunar ephemerides, Cassini observations of the Saturn system, and observations of Jupiter's Trojan asteroids as well as recently discovered Trojan companions around the Earth, Mars, Neptune, and Saturnian moons. These results can be combined with models for elemental abundances in each body to test for composition-dependent violations of the universality of free fall in the solar system. The resulting limits are weaker than those from laboratory experiments, but span a larger volume in composition space.

13 citations


Network Information
Related Topics (5)
Cloud computing
156.4K papers, 1.9M citations
70% related
Cache
59.1K papers, 976.6K citations
70% related
Planet
27K papers, 980.6K citations
68% related
Compiler
26.3K papers, 578.5K citations
66% related
Key (cryptography)
60.1K papers, 659.3K citations
66% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023136
2022282
2021111
2020139
2019144
2018168